Breakthrough Tech Heats Homes Cheaper Than Natural Gas!

[@Cee64E]

This is an idea that has been done before in slightly different ways. A friend of mine built a solarium on the back of his first home. He also built a semi passive heat battery underneath it. The battery was just three feet of pea gravel in an insulated pit under the solarium. On winter days, the solarium would capture much of the sun's heat, and a fan moved that warm air through the gravel and into the house. After the sun went down and the temps began to fall, the warmed gravel would still supply some heat, reducing his gas usage.

[@TheBooban]

A solarium to me is somewhere you go to get a sun tan artificially. What are you refering to?

[@Cee64E]

@@TheBooban, Maybe Sun Room is a better term? It was basically a porch on the south side of his house that was built like a green house; All glass. The one wall it shared with the house was cinder block, stacked straight and painted black. The fans pulled air from the house through them and blew it into the gravel pit before going into the house. In summer, he would hang a white curtain in front of the block wall.

[@hime273]

Unless there was a comparison to not hsving that contraption in the same house, then it's simply a bullshit claim to say there was a fuel savings.

[@daleval2182]

If they made sand bricks,left an air flow grid between this may be an option, or form sand into hard balls and loose stack ?, The question would be ,does running a fan provide greater heat stored energy,as say have more insulation and running a heat pump ?

[@Cee64E]

@@daleval2182, what is being built is a heat battery. Just about any mass of material will work for this, but by using something with a lot of surface area for it's weight, you can "charge" or "Discharge" the battery faster. A one ton block of concrete will hold as much heat as one ton of pea gravel, but the pea gravel can be warmed up by hot air flowing through it much faster than the block of concrete with air flowing around it. Whether you use it as a source for a heat pump or just as a source of warm air is a matter of time, budget, and skill, if you are doing this yourself.

[@Donbgrif]

I built my home to heat AND cool in Arkansas, without any other energy source. The house temperature year round was between 68 to 78 degrees. Heat of sun and coolness of earth transferred by concrete walls and floor and south facing windows. VERY COMFORTABLE!

[@Hansen710]

come back when you can do the same in scandinavia and stick to the building codes.. its a bit more easy to harvest the sun and cool, then it is to save it for heat, when there is little sun im also thinking of moving to the southern europe where stuff like that is easy.. but that doesent make any difference to the nature. the same number of people will still live where its alot harder

[@peterdkay]

Please note difference between power (kW) and energy (kWh). Power is measured in kW and energy is measured in kWh. 1kW of power for 10 hours uses 10kWh of energy. At 4:04 you use the same unit for both power and energy (100kWh and 8MWh). I assume it can supply up to 100kW of power and has 8MWh of storage. i.e. 80 hours of full power usage.

[@Speeder84XL]

Yeah! That one took me by surprice, haha. I was like "100 kWh, that's not much" - then he said it can store up to 8 MWh and I got it that the "100 kWh" probably ment it can supply up to 100 kW of heating power.

[@app3264]

There are almost 50 000 views of this video and only 5 likes under your comment. Hmm... Interesting... 🤔

[@faustinpippin9208]

@@Speeder84XL yea 100kWH would be laughably small for such a silo, even 1m3 of water from 80c to 20c can give 100KwH of energy lol

[@bzuidgeest]

@@app3264 8 now. Most people are here for the hype, the don't care or understand the meaning of those units

[@AORD72]

@@app3264 most people are dumb and don't understand the mathematics or physics, that is why the likes are out of wack.

[@dausume]

You don't specifically need construction sand for this application, as stated by the Company itself. They can design systems using sand not qualified for construction, as well as some kinds of dirt and gravel mixtures, using the same properties. They just have to account for the mixture when designing the system and ensure it is uniform. They also stated they can also try and utilize places like old quarries as a basis for making these systems instead of making them from silos, both of which can utilize local resources to drive down price lower than their standard approach of silos and sand, which is a choice they made because they are available rather universally. But to make them cheaper per-scenario, engineering them to the situation will probably be cheaper in many situations.

[@ryanjamesloyd6733]

I was going to mention this. Sahara sand is too smooth for construction, but would be great for this application.

[@BilingualHobo]

I think Polar Night is prioritizing recycled sand at the moment. But yeah basically any kind of rock sediment. Construction sand just happens to be easy to price by the ton.

[@mrrexy4151]

Actually cost per KW of Solar powered system is only $0,2 and there is a whole system in village Badnjevac in Serbia, that can provide energy for 2000 homes...

[@viisteist1363]

blaa blaaa blaaaaa blaaaaaa

[@toddsmith4280]

Would love to invest in this company.

[@banto1]

I've been to Finland working on energy related projects. From what I saw, home heating in their long cold winters in done via radiators run off of district hot water infrastructure, heated at a central boiler station (i.e. they have hot water piping throughout the city that everyone taps into). The heat source in the place I visited was simply burning wood chips (there are a lot of trees in Finland), which my hosts explained was carbon neutral, as they planted news trees in place of the ones they chopped down.

[@JamesParus]

Wood chips is just one way. There are oil burners. Ground heat pumps. Long distance heat that comes from big plants usually in cities. New individual houses are usually ground heat pumps to floor heating. As floor needs lower heat level so it makes more efficient way for heat pump compressor.

[@АгронДепартье]

It just take 20+ years... Coal is then also carbon neutral...

[@2xrpm]

@@АгронДепартье my thoughts exactly.

[@madsam0320]

20 years is brief in comparison to coal that are formed hundreds of millions years ago. The trees that are planted with be ready in just a generation or less. Meanwhile, coal that is burned, cannot be replaced because microbes that evolved to break down the wood cellulose didn’t exist during those prehistoric times when the trees fossilised into coal.

[@andrewjohnson6716]

That is not even vaguely carbon neutral. Logging and processing trees releases up to three times the carbon content of the tree alone. Newly planted trees in logging projects have a low survival rate and those that survive will take decades to sequester as much carbon as the original tree.

[@just_jouni]

Finland is not mostly power by natural gas. That is the EU average, but gas contributes to less than 5% of Finnish electricity production. Finland imports energy mostly from Sweden and Norway, neither of which either use much gas. Finland gets no electricity or gas from Russia. That was cut off earlier this year.

[@churblefurbles]

Only 5 million anyways, exceptions not examples.

[@cocoabeane7735]

From a novice about energy production: Since the company has to send the electricity to the end users anyway, is there some reason that a much smaller sand battery could not be developed for individual homes rather than building giant, expensive silos?

[@Btstaz]

Converting the energy back into electricity will induce a huge efficiency loss, you pretty much need to use this directly as hot air or to warm water to like a house radiator temp. I think going back to electricity gets you at like 80% plus efficiency loss.

[@liekkiilola5789]

Scale impacts the ratio of volume to surface area, which is a determining factor in the ability to store heat. A small sand battery cools down very fast while a similar battery scaled bigger retains heat much longer.

[@aatu050]

As a Finn I need an urge to correct few mistakes made in video and what wasn't taken in account. We used to import a lot of electricity from Russia before the war, where it was produced mostly by hydroelectric power plants owned by Finnish companies. Since the war broke out, we have stopped importing electricity from Russia, sold our power plants and moved on to import what we need from Sweden and Norway, where most of the electricity in produced also by hydroelectric power plants, in Norway like 99% is hydroelectric. We never used to rely too much on natural gas, it is imported here mostly for the needs of heavy industry, and only about 4%(2021) of our electricity comes directly from natural gas and in total energy consumption it has less than 6%(2020) stake. And we are hopefully getting new nuclear power plant (Olkiluoto 3) online during 2022, which will be one of the most powerful, if not the most powerful in the world, which will make us more or less self-sufficient in electricity production. At peak consumption we still need to import some, but that is usually just a week or two during the winter, that is coming. Also unlike anyone else, we have the means of long time disposal/storage of nuclear waste in Onkalo, which is also conveniently located under Olkiluoto nuclear power plants.

[@KenJackson_US]

Excellent! Nuclear is good. We need _more_ nuclear plants and less brain-dead wind and solar.

[@808pathfinder]

I bet you that new plant your talking about will be near or at a river ,why is that? Water dams only work if water is present and in this present ,we need a lot of fresh water for everything,and it's disappearing fast ,nuke plants are a tickin time bommmm

[@KenJackson_US]

You make no sense, @@808pathfinder. Yes, nuclear plants need water, but they don't consume it. And if more water is needed, what would be better to power a desalinization plant than a nuclear plant?

[@808pathfinder]

@@KenJackson_US not going to explain it all here, only time will tell

[@Docswavestranslucent]

Also you can use the bi products of said nuclear waste to contribute to nuclear diamonds batteries make cost even lower by making a technological recyclable environment or T.R.E.

[@timogronroos4642]

Our grid in Finland is already over 80% carbon free. So gas is not the major energy source. Most important are nuclear, hydro and wind.

[@Groaznic]

That's not correct, it's 80% renewable, not carbon free, but renewables include 20% actual wood burning. Because wood is considered renewable. But burning wood is no hecking way "carbon free".

[@janklaas6885]

@@Groaznic He didn't write its carbonfree. He was reacting on this 8:45

[@Groaznic]

@@janklaas6885 He literally wrote "it's over 80% carbon free".

[@prioris55555]

why limit carbon. carbon is plant food.

[@janklaas6885]

@@Groaznic but he DIDN'T write "its carbonfree" , you fool.

[@markcollins457]

I like the price of such a simple idea , domestic hot water is an area that can benefit from this. Preheating the cold water from 55 degrees before it gets to the domestic Vessel. This could be adapted on a small scale for use in apartment complexes, food service etc. Food for thought Good job!

[@jamesvandamme7786]

This is what I've been doing for 40 years. I have a 20X4 foot back wall area that I covered with double pane polycarbonate glazing. Inside there's a bunch of 3/8 inch EPDM tubes that circulate water from a 1/10 HP pump. It's just plain tap water without chemicals or antifreeze. Freezing doesn't hurt the EPDM. The water goes into 2 50 gallon polyethylene drums and the cold drinking water picks up the heat through copper dip tubes inside the drums. It heats up to somewhere below 110 degrees, then goes into a regular water heater for storage and final heating. I recently replaced the water heater after 39 years. It mostly loafs along.

[@mrheck5311]

For years there has been battery "breakthroughs" every week. This looks like a genuine breakthrough that could be very useful especially with intermittent renewables.

[@eaaeeeea]

Indeed. This tech seems so simple, cheap and efficient it could be deployed quickly. I could see easily extendable vast arrays of these systems buried underground in the very near future. Maybe even warming up whole Finnish towns in a year or so, as the district heating systems are already in place. There is already excess wind and solar capacity, just direct that to these sand batteries now until electrochemical and mechanical ones ramp up. I see this as a very viable future energy storage solution among others.

[@mrheck5311]

@Jo Blow it has specific uses but it's relatively simple technology, easy to construct, uses abundant materials, very long lasting and its ready to go now. Stick these in certain neighbourhoods, manufacturing plants, swimming pools etc and they could store a lot of energy, saving electricity in winter.

[@mrheck5311]

@Jo Blow it can be put underground or in some building, out of sight.

[@mrheck5311]

@Jo Blow actually I've been critical of all the "breakthroughs" I read about every week. Nowhere to be seen. This actually works.

[@VilmaHallikas]

@Jo Blow No one is claiming it is an electric power source? And why should it be? In Finland over 25% of all energy consumption goes to heating. And our heating season is long, from around 250 days in south to over 300 days in the north. On top of that things like swimming pools need to be heated year round. Considering that over 50% of homes are heated with district heating those batteries could be literally anywhere and not be an eye sore. Sand is also pretty good insulator, these batteries don't need much if any additional insulation. That first operational battery is literally a metal silo without insulation sitting above ground, and if it works there in -20C weather, it would do very well a few meters under ground (though that would be way more expensive).

[@michaeljames5936]

Anywhere there is a community heat scheme, like in large areas of New York, this would be perfect. These piped heat arrangements are the norm in densly populated areas in much of Europe. There are also many, many areas that could adopt them. I think this is an incredible innovation and would only need a small group people to make one of these viable, especially if they had a community generation scheme.

[@CUBETechie]

You mean a central heating System and hot water Radiators?

[@harrywalker5836]

ever heard of salt/ sodium reactors,clean, safe, self perpetual..banned in 1954, because it didnt produce weapons grade waste..ie. nuke..

[@benmcreynolds8581]

I'm so glad you got around to covering this. I mentioned it a few months back. After I saw coverage from Finland and I was just in love with the concept of how simple and cohesive it is to our current environment. I just love inventions like that. Also, not every method and idea is ment to work for "every option" but it will be Really good at what's it's good at. So it's totally worth it if you interconnect it to your city planning system properly.

[@TwoBitDaVinci]

🙏

[@manofsan]

Can this be practical for off-grid homes? I'd really like to know.

[@Kangenpower7]

@@manofsan I plan on running mine with a PowMr 5,000 watt inverter / controller / charger by PowMr. It will run on a small battery pack, with 8 each golf cart batteries from Costco, $100 each and 1,200 watts each at 48 VDC. I am installing a 12,000 Btu 120 volt unit from Amazon. Mine will have a 1,100 watt load on the inverter in the heat mode and slightly less in the cooling mode. These inverter heat pumps are really easy on their power supply, and not a sudden power like a one speed compressor.

[@cheeseheadfiddle]

Sand heat storage is a proven component in passive solar home heating. Large reservoirs of sand absorb southern exposure sun during the day and radiate slowly at night. Not an electrical solution, but it exploits the same thermal mass quality of sand.

[@shitina.bucket9699]

Ohh this is kinda like how cob houses works, cool stuff =)

[@callyman]

Just like an Earthship.

[@manofsan]

Why is electricity even needed for this sand battery? Why not just use solar thermal instead of solar photoelectric? There'll be less losses, with nearly all the heat being channeled into the sand battery for storage.

[@shitina.bucket9699]

@@manofsan although solar thermal is more efficient per m2 pv is actually cheaper it just takes up more area also less maintenance with pv

[@manofsan]

​ @Shitin A.bucket - what about using large Fresnel lens for concentrated solar heating? Could that work better?

[@garyfilmer382]

Great video! I remember being fascinated, as a child, by the way sand retains heat, it was something that I had definitely noticed, because I lived adjacent to a sandy seashore. I think these sand batteries are an amazing adaptation of a natural resource to store energy. The batteries could also have cladding to enhance their retention of energy.

[@metn84]

As a Finn, I would appreciate if you checked the natural gas consumption statistics before saying that we use natural gas ”for most part to power the grid”. We were at 6% of total energy consumption in 2020 and it is just getting lower. New nuclear power plant and relatively large wind farms being completed should help us being energy independent, but next winter will be horrible for energy prices for sure. Geothermal heated homes won’t be influenced too heavily though.

[@kkarllwt]

I though you were all hydro and wind.

[@metn84]

@@kkarllwt not yet at least, probably need to mix in solar energy too during the summer times. Nuclear energy is a pragmatic choice in the green transition too.

[@jaypaul8167]

The same idea used in clay pots over a candle to put out radiant heat, except you have much more mass. I believe there is a coefficient number that is associated the amount of heat certain substances a can radiate. Moisture also makes a difference. We can also heat the sand using, solar, circulating water or eutectic salts, or heat by wood or other vegetation. A great idea to substitute different means of storage, rather than getting stuck on chemical reactions.

[@jamesvandamme7786]

The clay pot thing is a scam. You don't get more heat out than what a candle normally puts out. It stores a tiny bit, but you could get rid of the pot and have light too.

[@larrybrashear4988]

Using sand as a large scale heat sink is both a simple and a grand idea. The solution to many problems is sometimes found right in front of us, and in this case, under our feet. Well done!

[@bobsaturday4273]

sure , don't bother thinking thru the logistics , just ignore all the details of actually implementing on any sort of scale

[@jamesvandamme7786]

Do the math. it costs money, so do you get a payback? Maybe, if your off-peak electricity rates are much lower and you need heat at peak times.

[@asdfdfggfd]

Simple diy... 55 gallon barrel of sand in basement of house. Mixed into sand is heating element. heat the sand with pv during day. Let barrel cool down over night. Doesn't really help in places like Finland where they have 6 week long nights in winter... Much cheaper to operate than trying to run electric heat off of batteries though.

[@crcurran]

What kind of heating element can do this without overheating burning out?

[@asdfdfggfd]

@@crcurran I would start with a longer stainless-steel heating element coated in silicone rubber. Something like the Frost King HC30a. Directly wired to a fuse, and about 300 watts of PV panel. The thermostat would have to be disabled, because the DC current will burn it out rapidly. You are correct though you would want to start much smaller than 55 gallon drum . Maybe start the experiment in a 5 gallon pail instead? Scale up from there.

[@shitina.bucket9699]

@@asdfdfggfd what about using an old copper tank for the experiment already has an element and insulation

[@asdfdfggfd]

@@shitina.bucket9699 Im too cheap for a copper tank, empty 55 gallon drums and 5 gallon paint pails are cheap to free. Sustainable solar energy is only going to work out if everyone is as cheap as possible. Too many check book problem solvers in the industry right now.

[@cowlevelcrypto2346]

A 55 gallon drum is significantly smaller than what they are talking about, or what would be required in most applications. The most efficient source of heat would be hot water from solar not electric , in addition, the same hot water tubes could be used when circulating the heat back out. Heating with electric heaters would be more expensive than just buying overpriced gas. The heat storage benefit of sand comes from the fact that it does not transfer heat easily. It is a lot easier to heat up water than the same volume of sand. In the reverse, you can not draw that heat out very fast either. This concept is best suited for heating a home gradually over time, not for electrical production or boiling hot water extraction.

[@chrisb508]

This is a perfect example of how a combination of technologies is how we get there. It's not a one size fits all solution, but hugely useful if used right. 🙂

[@davidrn2473]

This system would also would work using air (from a greenhouse) thru flexible 4" pipe or water thru 1' Pex using evacuated solar tubes. If the tank /container was super insulated, heat created and stored in the summer could provide heat for the fall and early winter.

[@ab3000x]

This tech is beneficial to all places. The heat from the sand can heat water that can be pumped into homes and buildings. Hot water is nice to have even in Southern California. Fun fact: heat is normally what makes something inefficient but resistive heating is 100% efficient because the goal is to create heat.

[@jamesvandamme7786]

Heat pump heating is 300% efficient.

[@justinw1765]

Soapstone is particularly good at holding and slowly releasing thermal energy. Soapstone is essentially super compressed talc. I don't know the prices per metric ton, but it is fairly cheap--maybe not for giant, industrial use like this, but certainly could be applied to home use. Just need a way to really compress the talc, and get out as much of the air as possible (and get the particles as close to each other as possible).

[@andrewjohnson6716]

That is an interesting home battery idea. A soapstone stack in the basement that can release the stored heat as electricity or directly as heat.

[@mikedunn7795]

We need this scaled to heat individual homes in areas without district heating,but it would have to be only with a huge sand silo,which probably rules out most suburban homes. Maybe bury the heavily insulated silo when building new homes? Generate the heat from solar/wind,with resistance wire in the sand,and you can store heat for cold winter days. Then again,for detached housing,forget it and install geothermal heating/cooling.

[@Adrian_kal]

This tech is amazing. If that would be put on an output of a heat pump it would collect heat when its 40 deg c outside and release it when it's -20. To make it efficient when small it could be buried underground. Add to that excess energy from pvs and off grid house would be possible even in Finland.

[@jr0079]

The biggest biggest problem that most homes aren't insulate super well. I help someone insulate there walls R-63, ceiling trust R-100 and roof trust R-100 with radiate barrier and super super high efficient foam and windows. They reduce there cooling and heating cost by almost 100%. In the summer time the only time they run there AC when it reaches 120F outside. In the winter time they run there gas heater for 3-5 mins and keeps the home warm for 7-10 days.

[@marinerskm]

I like the idea of each house having its own Sand Battery silo. Feed heat or electricity into it when things are working well, and heat (and perhaps a small amount of electricity) is available during a crisis. The idea needs to be developed a bit further, but I think the Proof of Concept town shows we're well on the way. I'm thinking this could have use in a large O'Neil Cylinder space station.

[@Adrian_kal]

There is something like that already. Recent fully charged show covered it. I don't remember the name unfortunately.

[@Groaznic]

That's good for energy independence, but bad for efficiency, think about the insulation in the silo wall, that's proportional to the silo surface area (power of 2 function), whereas the heat storage is proportional to the volume inside (power of 3 function). The more you increase the silo size, the more favorable the ratio of its volume against its surface is, which means more energy stored inside, and less energy lost through the insulation layer.

[@Adrian_kal]

@@Groaznic that's why in this project storage is small and insulation takes almost all of the volume. Still it's economically viable option especially for retrofits.

[@bzuidgeest]

This is a grid level solution, it's not meant as a home solution. It's far more efficient at grid scales.

[@Adrian_kal]

@@bzuidgeest everything is more efficient when bigger. Economy of scale. Yet we live in times when access to grid power is not guaranteed anymore. People died in Texas because of cold. Grid was down.

[@MikeKeesler]

I am going to build a home. I own land in West Texas. Something that can be done relatively cheaply is Geothermal. And once it is installed, it can be almost free to run. This version will cost literally pennies per week to operate. Pumping water about 10 feet underground and bringing it back at about 55 degrees, year around can be a true game changer. Of course there is more to it than that but that is the basic idea. I would love to discuss it with you.

[@joeinopksw]

It’s obvious this technology has great potential, I’m left curious if the cost of extracting this ‘sand heat’ and delivering the same can outweigh comparative total energy cost? Hey; bought the ‘Fannttix X8 Portable Air Compressor’ to help maintain my RV and Jeep, when traveling. Your discount code was a great saving. Thank you.

[@JackRegan]

Thanks

[@tommieronen7424]

Lifetime is at least 50 years. =) There is nothing to wear out inside, a fan can be replaced outside of a storage.

[@NaumRusomarov]

if they're using resistive heaters, they can fail after some time, although a properly designed system should be fairly easy to fix.

[@DaT0nkee]

@@NaumRusomarov And if not properly designed, they have to dig a little.

[@maverick3276]

The sand battery is a great idea and could be incorporated into heating and cooling, water heaters, heat pumps... In the winter instead of using the coil from your air source heat pump, the heat pump could use your ground coil where you have been pumping heat in all summer and become much more efficient. This would require smarter heat pumps that know which coil to use. Radiant heat such as boilers could incorporate radiators filled with sand that keep Heating after the boiler has stopped. Excess energy from solar could be pumped into the ground to heat the sand so you can use it to heat your house. This brings into play one of your other their videos with the smart panel. It can also be accomplished with smarter inverters that distribute the extra power to heat the sand. Great video as usual. Keep up the good work!

[@MegaSuperfly92]

Any ideas for an efficient way to convert the stored heat energy into electricity (turbines/etc)? If that could be solved, maybe sand batteries would be a viable grid-scale storage system anywhere that has a significant percentage of intermittent renewables (wind/solar).

[@faustinpippin9208]

I think they just heat water with it and the steam runs the turbines

[@runedegard]

Sterling engine may convert heat to electricity with an overall efficiency of 30-40%

[@HepCatJack]

Smaller sand batteries for individual homes could be place at the center of compost piles and this would keep it hot needing only to replace the compost in early autumn using grass clippings and fallen leaves.

[@Slamminbassplayer]

Thanks for this video - love it. Scandinavia seems to be on the cutting edge of reason, with great exploration of global game changing yet simple technology- without the bastardized, lobbyist-polluted political dynamics that we see in the US.

[@finddeniro]

Dubai is building Amazing Big Time Projects..

[@timermech]

What happened in Texas wasn't just because of high demand due to the extended freeze. Many power plants service their plants during the winter months because the typical winter demand is much lower. So, some power generation was offline. Their was also the complication that power plants were not designed for a prolonged freeze cycle and because of the typically mild winters, especially in the central and southern portions of the state, they failed or were incapable of full production. The state is still trying to get a handle on all the inadequacies of the grid and making the needed repairs and upgrades so the grid does not collapse again if another prolonged freeze occurs.

[@rschiwal]

I've had this idea for a while, only I would dig down. How much energy could you store in one cubic KM of earth? You could use wind and solar energy to heat one area and pump winter cold into another. You would have a vast potential difference.

[@jamesvandamme7786]

It sucks. The ground is an infinite heat sink at the average temperature in your area. You could use a heat pump to warm in the winter and cool in the summer, but trying to use it as a storage for off-peak heat is going to waste a lot.

[@robertjones1730]

I have an 800 gallon water heat storage tank up here in Maine that I store heat from a wood/oil fired boiler. I had been wondering if it would be better in some ways if the storage tank was filled with sand instead of water. Would it transfer heat too slowly?

[@uncleeddie5813]

water has much better heat transfer. Sand may hold the heat longer, but also takes longer to absorb it. That's how I see it

[@edclark6543]

Sand can be heated above boiling point of water

[@tycooperaow]

Question, what kind of sand does this take? Is the rough course sand is used in construction and concrete or the fine and smooth sand from oceans and African deserts? If it’s the latter that could help reduce Brine when we desalinate our waters

[@emuhill]

Salt might be a better solution for this application. I hear that salt is used in solar power plants to keep generating power for a certain number of hours after the sun has set.

[@crforfreedom7407]

You're incorrect about TX. MOST of the pipes that broke, broke at OUTSIDE water sources like external hot water tanks and ordinary water spigots with shutoff valves flush with the outside. This is where the vast majority of the pipes broke. These alternative heat sources may help in these rare events, but if they wouldn't invest in ANY winterization of their wind turbines, why would they invest in this?

[@spcneary]

Came here to say this, also, it wouldn't matter if a grid battery was online if the lines are damaged in many places as it was.

[@ThisIsToolman]

What about heating the sand using off-peak electricity in a home that incorporates a floor heating system? Circulate the water for the floor heating system through the sand. Use resistance heating to heat the sand directly. Switch off the electric during peak hours and relay on built up heat in the sand to heat the water.

[@MrGigi-dz9cv]

They could heat the sand with concentrated solar power.

[@shake6321]

i think the issue is that the larger the system the more efficient it becomes do to energy loss being a function of volume. that’s why they want large volume silos.

[@kkarllwt]

Just buy a ceramic elec. to heat storage devise. They are on the market

[@kkarllwt]

@@MrGigi-dz9cv Like 247solar? who would think?

[@ThisIsToolman]

@@kkarllwt I was thinking along the lines of an electric hot water tank filled with sand with the water plumbing passing through the tank. The heat source for the water would be the sand on a continuous basis but the heating elements would cut-off when the electric went to peak. Ordinary electric heating elements used in water heaters may have to be throttle back to prevent them from burning out in the less conductive sand. Nonetheless, a little DIY internet research would find all the data needed to size the actual tank and the number of elements as well as the means by which to prevent early element failure.

[@billcichoke2534]

The problem with this system is that most solids don't keep exuding enough heat to be viable power generation sources. No matter how big the building, the power required to heat up the solid is far more than any energy you would get out.

[@cheeseheadfiddle]

It seems like the silos could also be made to heat themselves via passive solar. If they had a “greenhouse” sleeve with a 2” gap around the east, south and west sides and insulation on the north side, the silo would be heating from outside in as well as inside out from the excess PV/wind. Great job, excellent overview.

[@mandlesevday3750]

I found it amazing that you didn’t mention the original sand battery which would be 55 gallon drums painted with a dark paint on the north side of any passive solar dwelling they can be filled with sand or gravel but usually the gravel would have to have the minus component to have a continuous conductive interior. They simply absorb the sun‘s rays during the day and let heat off at night. Even ancient Rome figured out how to build cities giving each house passive solar energy not sure why it’s so tough for us today.

[@cowlevelcrypto2346]

I love this channel and a lot of it's content. That being said I need to point out that this idea for heat storage is certainly not new. In the 70's there were Popular Electronics Magazine and Modular Home articles that discussed how people were using an ancient gravel and sand heat storage. In these articles the sand or gravel was built into or below the foundation of a home. The heat was stored by hot water solar, electric, or even hot air. Heat removal was air or water. I you are going solar, it is a great idea, because heating your home is a huge load on real battery storage. In fact , I am a little perplexed as to why they would call it a Battery at all, possibly a sales gimmick. Storing this above ground is a waste of space and makes the concept less efficient due to losses to the atmosphere. Except for the plumbing, there is no reason that this would ever wear out. To compare it to Tesla batteries and claim a longer lifespan leads me to believe the company is implying a maintenance plan. For all intent and purpose this is a near surface heat pump system, not a Battery at all, unless you consider what this company is trying to do to your pocket book. I see this as a cheap marketing ploy and quite possibly a scam. I am sorry, while I am not going to Dislike this video, I can't Like it, and I can't believe you were taken in by this. Though the idea may be useful to already built structures, there is no reason for it to take up space above ground, is absolutely not a new idea, and is not a Battery.

[@andrewjohnson6716]

Building these into homes might be a good use. In Finland for half the year the most common use of power is to produce heat. So producing electricity, storing it as heat in the sand, transforming it back to electricity to send to homes where it will be transferred back to heat is more attenuation than the system needs to have. Instead produce the electricity, send it to a sand battery in the home where it can later be released as either electricity or directly as heat.

[@rklauco]

Best thing about this? Uses only existing tech, plus the sand is RECYCLED building sand, they can use whatever quality. Any location with district-level heating should build this - heat it up while electricity is cheap or use waste heat from whatever source, distribute it in standalone or hybrid mode when there is demand.

[@macmcleod1188]

It also creates a user for smooth desert sand.

[@nonegiven3814]

Those who died in Texas energy grid collapse died of family neglect I was there & have been thru many hurricanes & snowy/icy winters. The storm highlighted the weakness in our culture of people having no survival skills or preparations.

[@patkonelectric]

Like to see a sand vs water for storage. Asking because water barrels are popular for storing heat in greenhouses.

[@patrickdegenaar9495]

Energy stores = heat capacity x temperature difference. Sand can be stored at perhaps 1700C (though in reality 1000C) = 10x better than water. But water has a 5x better heat capacity. So in reality, this system is only 2x better than a simple water tank. So a 2x bigger water tank will do the same thing, but perhaps much cheaper.

[@DaT0nkee]

For this, probably desert sand is also fine. Unfortunatelly in the desert no heat storage needed. Maybe combined with stirling motors, or turbines....

[@autohmae]

yeah, because normal construction sand might not scale, their are already 'sand thieves' who steal sand from beaches, etc.

[@gordybishop2375]

We get pretty cold, below freezing in the desert. Heat can also be used for things like cooking…think big bakery cooking loaves of bread 24/7.

[@CharlieRickman]

This is for direct heat only, too many losses to convert to electricity.

[@audigit]

I like the reference to stirling engines for energy conversion...Nice

[@incognitotorpedo42]

@@audigit Stirling engines don't solve the problem of Carnot inefficiency.

[@garybarbknecht4712]

Here in southern Wisconsin we have a foundry that used to be a filthy black place. Over the years many updates have been installed, I am not even sure they burn coke anymore.They heat the iron to the melting point with electric furnaces. Very seldom are the doors closed even in winter. I wish I could capture the heat from this plant to heat my home. Sounds like a sand battery might be a good option, maybe we could get the lumber producer to capture some from their kilns, even the plastic injection factory could add to a sand battery.

[@daveh6356]

I'd be interested to see a domestic version of this using solar/wind or just cheap-rate electricity. Maybe replacing the hot water tank to provide hot water and central heating systems. Perhaps even a thermoelectric system off the back of this too.

[@toddsmith4280]

Wonder if you could heat your oven with this?

[@bobwbarnes]

reminds me of old storage heaters that used cheap overnight electricity to heat bricks (sand based) in the heaters which then released the heat later...

[@daveh6356]

@@toddsmith4280 at 600ºC why not? It could power a heat pump or HVAC system. Would need fire containment though maybe the new-age chimney?

[@daveh6356]

@@bobwbarnes I remember those. Why did we never develop them? What am I missing about this tech?

[@melinda6024]

I used to have a home that faced south, and it had a cement porch and a cement surrounded flower bed. on a sunny day, the cement stored heat and released it at night. My flowers would stay warm and grow when others' would freeze.

[@notcherbane3218]

Could you do a hybrid system of geothermal and sand so you use the geothermal to heat the sand up ? Just a thought just imagine large sand batteries close to volcanoes or geothermal events ??

[@titanbot11]

You could, but it wouldn't make much sense, geo thermals is essentially an infinite heat source already, you wouldn't want to store that heat unless you absolutely had too due to efficiency losses.

[@kkarllwt]

and except in africa indonesia or italy, people have the good sense to not live by volcanoes.

[@fredcsp1]

How long time can they keep the heat in the container sealed with heat protection?

[@jjackson3240]

Pretty similar to phase change materials but likely a lot cheaper.

[@incognitotorpedo42]

Way cheaper, but way less energy dense.

[@eCitizen1]

I could pair that with my passive solar collector, and do a slow release of heat back into the house. Do they make one small enough for a single house?

[@alexvechirko_]

It's not a "conflict" in Ukraine - how you mentioned in video, it's - Russian war invasion into Ukraines borders. Naming things correctly - it's a good tone rule, at least.

[@TwoBitDaVinci]

You’re totally right man my apologies.

[@MaximusMuleti]

I wonder if sid rock would be an alternative. I get ehy sand is used, due to its ease of maluability to get pipes in, but the surface area of each sand grain has got to greatly reduce efficiency. Maybe sand stone, as it would be easy to drill.

[@hawks9142]

Something I was thinking about is using the sand to store "cold" as in cool the sand with a heat pump powered by solar and use it like that in the summer. Could be a way to get more use out of it in places that actually have seasons😄 (Yes I know cold is a lack of heat energy but that's the best way I can think to explain)

[@scottstewart5784]

Interesting idea. SInce it's summer, you probably have the AC on during the day, so you have AC. And you have solar, in this concept. You could just use batteries and run that same AC at night, and save on the system you'd need to distribute the sand's coldness to cool the house, and the second unit - the heat pump running during the day to cool the sand while the AC is cooling the house. Unless one larger unit could cool the house AND the sand, then you're cooking - most of the ductwork exists, just need some servos and blowers. If one unit could do both, I would want to know how much bigger (and $$$) it would need to be over a just getting a battery system, to know which makes more sense. Probably a bigger unit. Now think about geothermal.

[@hawks9142]

@@scottstewart5784 yeah I'm not sure about the cost vs just batteries but sand batteries last pretty much forever so it could maybe be worth it.

[@MathieuDeVinois]

We used to have ovens like that. At nighttime when electricity was cheaper People would heat them up to consume the head on daytime. When those night tariffs disappeared also this sand stoves did. - still a good thing. But, as constructions is actually a rare resource one may could use desert sand when scaling up. One could also use bundled sunlight to heat them up?

[@mabamabam]

Construction sand is so rare and special it costs $10/tonne.

[@geoffreycharles6330]

We do that too in Bulgaria and we still have cheaper night prices.

[@Soothsayer210]

why can't water be used instead of sand. I thought Water had a better thermal mass than sand. (I could be wrong).

[@TwoBitDaVinci]

yeah it does, but it boils off at just 100C so its potential to hold energy is limited. great question though... and water does have a part to play for sure

[@Soothsayer210]

@@TwoBitDaVinci thx. that explains.

[@AndreC240]

@@TwoBitDaVinci why aren’t they using the sand to boil water to run a turbine?

[@markhathaway9456]

@@AndreC240 They're just using the heat directly and not trying to produce electricity from it.

[@kkarllwt]

@@AndreC240 A really big turbine ( 200 + megawatts + could convert 30 % of the heat into electricity.

[@nicksgarage2]

Downtown San Diego used to rely on district steam heat. I don't know that any buildings use it now. Even a warm place like where we live uses heat but it would definitely be a great thing to use in colder areas that have lots of wind energy.

[@dennisenright7725]

I'm very surprised that temperature's get low enough to justify that

[@kkarllwt]

there are towns in western South Dakota the us hot springs to heat the district systems.

[@TheWadetube]

The sand battery works as long as you have a means of making excess energy like if the wind blows all the time or the powerplants never run out of coal. It would be better to custom design each of these systems using what works best in the area. Solar heating on individual homes using mirrors and black absorbing water tanks works wonders and there is no heat exchange issue, the hot water goes directly to the walls of the house and return a little cooler and this will last all night but have a week of cloudy days and neither water nor sand would work. Solar will work a little on a cloudy day but not enough to heat your house. A wood burning fireplace could make up the difference because the sun has been growing those old trees for decades and if we don't burn them or make lumber out of them they will rot in the forest and give off methane and Co2 anyway, so it is okay to burn some of it when needed. Reliable power seems to be the root issue, not how to store it. Sand on such a scale sounds great but the heat exchange must travel a long ways through insulated tubing to warm a building, no doubt underground. My father used large volcanic rocks to bask in the sunroom and absorb heat to help keep the house ajoined to it warm in the winter time, the sun was always finding its way to the black rocks and it helped.

[@NinetooNine]

The energy dome still sounds like the best energy storage solution on the horizon.

[@Sylvan_dB]

Sand is cheap, but the phase change of melting stores a LOT of energy, hence the wax heat storage systems.

[@nomenetasaili8598]

Sorry can you clarify becasue its not clear to me. The capcity is 100kwh for 100 ton of sand battery or 8mwh?

[@Talon771]

Random comment for channel interaction.

[@shitina.bucket9699]

So I get an old copper tank maybe one in disuse because of ware, and fill it with sand then just run the dump load to the element in the tank right? Maybe even take use of the back boiler to heat the sand off the stove?

[@markhathaway9456]

It's very insulated, so the extremely hot sand doesn't give off the heat too quickly or when you don't want it.

[@shitina.bucket9699]

@@markhathaway9456 copper tanks are usually insulated too and if not you can get jackets for them, the coil for the backburner could be pumped for a radiator, using solar to heat the element during the day and slowly release thru the radiator, or maybe you wouldn't even need the radiator just wrap the tank in a insulated blanket and undress her later that night 😘😉😜 what do you think?

[@ajr993]

I'm getting so sick of technology "reporters" on KZbin peddling bullshit and then creating click bait titles that are completely orthogonal to reality. Unsubscribed

[@dennisenright7725]

I would've thought that a heat pump system would be better but the 600 degree Celsius (1000F) operating temperature would probably be far outside their operating range. Also using water rather than sand at that temperature would require a vastly more expensive containment system to avoid a steam explosion

[@dennisenright7725]

Also this would tie in very easily with existing district heating distribution infrastructure

[@lylestavast7652]

industrial heat pumps presently top out somewhere around 350F.

[@kkarllwt]

There is a company that is so proud of the fact that they can make low temp steam for industrial purposes. 240 deg. f.

[@basikwashman]

Great video

[@privatemale27]

It would be interested to eventually see thermal batteries eventually paired with heat pumps. Resistive heaters are only 100% efficient. Heatpumps can be several times as efficient. Use the input power to mainly run an air compressor and heat pump that is cooling the compressor and gas. The heat is directed to the thermal battery and the liquified air can be stored for when cooling is needed. Then release the compressed gas for cooling. It would be best if there was a heat pump with a high temperature phase change material that would have a liquid state below 100C and a gas state of at least several hundred C or higher. Gallium seems a little interesting since it melts under 40C, but it won't vaporize until 2400C, even sand would be melted before it reached it's vapor point.

[@chidorirasenganz]

Using a heat pump will drive the price up significantly

[@privatemale27]

@@chidorirasenganz How so?

[@chidorirasenganz]

@@privatemale27 heat pumps are more expensive upfront than resistive heaters

[@ButtonBrand]

The sand is an energy store it is not a battery. It is the same as calling hydropower Station a water battery!! Nonsensical terminology..

[@libertyforamericanow]

When i walk out my front door there is a sidewalk with the block garage wall running next to it. The sun hits that wall from 2 pm till sunset. After the sun sets and i go out at night, i can feel the wall radiating heat that was captured in the day as i walk down the side walk.

[@davebean2886]

Does sand store cold? For desert areas could a sand battery also store cold at night and release it during the day to cool a home?

[@ClipSwitchFlashlights]

Hahahaha…the impeccable comedic timing of the Star Wars prequel clip alone deserves a thumbs up.

[@AN-ks2ep]

What insulation they use to seal sand battery?

[@christopherbeddoe406]

Decades ago I saw a show about an architect in the mountains in Denver who used evacuated tube solar collectors to heat a glass mansion and dump the remaining energy into a year round outdoor hot tub. I want to build an ICF house with in floor heat then build an out building shop with the south facing wall covered in evacuated tube solar collectors. Pump water through them and into a reservoir in the garage. From there it can be distributed to the house, slab in the garage, heated driveway and sidewalk, water heater etc. On demand. ICF homes have high insulation value, sealed external envelope, and extremely high thermal mass so even if you go a period without significant sun it takes over 2.5 weeks to induce a significant temperature fluctuation in the house. Could heat the entire house in -40F weather for just the electricity required to run a pump periodically.

[@eschmidtiii4673]

I’m planning on heating a honey storage room with solar space heater and a 55 gal drum filled with sand or river rock that will give off heat during the night. I’d appreciate any thoughtful ideas. I want to keep an 8’ X 12’ x 8’ high room at 90F-100F. Any thoughts?

[@RH-mm2mo]

Would it be improved any if a low cost greenhouse around it increase efficiency? Does heat radiate from it at all. Could plants be grown better?

[@ccdb1494]

IN the US, only about 30% of glass is recycled, the rest going to landfills. Glass can be crushed and ground back into sand. If repurposed for the sand battery, it could eliminate 5% of the solid waste in landfills. Yes, it would probably cost more than mined sand, but probably a little more friendly to the environment.

[@SanchoSanto]

Would this tech work with desert sand? I say this because I heard construction sand was becoming a limited commodity.

[@geoffreycharles6330]

I come from a former Soviet occupied country. We have an old stove, produced in Russia, that stores electricity as heat with the help of special bricks that retain heat. You put it up for a few hours at night and then turn it off during the day and you heat this way your home for the next day.

[@donfrancis658]

Will a heat pump work with sand .how much sand is needed for a 4 bd home and how to get the heat out of the sand

[@LetsSeeWhatHappens]

Any idea if sand stores energy better than dirt? Does wet sand transfer energy faster than dry sand? Whatever we come up with I think we need to be moving away from grid systems and towards self sufficient homes. That alone would be more efficiency than these old grids.

[@TwoBitDaVinci]

Totally agree

[@TheDeelunatic]

There are several errors in your statements about that Texas power grid issue when the polar vortex smacked them, You failed to mention that the people that built the grid there as well as the wind turbines for texas, cut corners to pocket the savings and didn't build them with the intention of Cold Winter usage as they expected the temperatures of Texas to stay above freezing. When they didn't build to code by not applying the necessary cold weather parts such as wind turbine deicers or the necessary grade of wiring to handle cold, al it took was that polar vortex to prove that they cheated the entire state of Texas (and some parts of Oklahoma, but that didn't get near the coverage). The worst part of the whole thing was that on the average, Texas homes are not insulated to the degree of homes further north (Some not at all), So the slightest breeze will draw any heat built up in the homes right out Which is good for the hot summer months, but when the freak cold weather comes, it really sucks.. So even managing to get heat from Running Generators, Kerosene (not sure of the availability of that fuel.) heaters, lamps, or otherwise, The lack of Winter preparations from builders of Texas homes, got many people killed as they didn't ever expect to have to deal with such a situation. Basically what I am saying, a bunch of Sand batteries in the grid would not have helped Texas in that situation as the entire grid, regardless of renewables or otherwise energizing that grid, would have just been a tube full of hot sand that wouldn't have helped anyone as the wires, substations, transformers and such were going down due to the people in charge of the grid being so cheap. Now obviously a sand battery doesn't rely on the grid for it to store power. However Texas is a vast state, so the piping for such a setup would be better off set at a per property (or per block in cities) and even then, there has to be some sort of means to move that energy around to and from the sand. could it have helped? Maybe, but it would have taken a means (fluid, Thermometric, something) to move that heat from the sand as I am assuming that Electricity is not being stored in the sand, but heat. Then you have to consider that big tubes of sand would look kinda gaudy and many cities residents would call them eye sores. but what's a little ugly when it comes to being the "wave of the future?" Note I'm not bashing the idea of using sand to store energy, I'm bashing the usage of that tragic event for residents of Texas and parts of Oklahoma where their homes and grid were poorly prepared for such an event due to so many corners cut that lead to a perfect storm of a disaster. Yes it was a disaster, but I doubt that a sand battery collection would have helped as a bunch of Sand will only hold heat for so long and that Polar vortex stayed in place for quite a while.

[@charleswillcock3235]

In Europe there is a massive shortage of gas, the price is sky high, anything which would help in the winter is a good idea. I think calling sand a battery is a poor idea. Most people think of electricity - this is more a "night storage heater" which were popular in the UK 20 years ago. They were radiators with bricks in which you heated up at night on low price electricity and that kept your home warm during the day. The downside was by the evening they had often run out of heat.

[@KnowArt]

100 kWh heating power but 8 MEGA-Wh energy storage?? How do these numbers relate to each other and why are they so far apart?

[@jamesdubben3687]

In the USA my thought is for industrial heat. I know an engineer in a Florida production plant that is getting rid of the natural gas hot water system and going electric. (they use a LOT of hot water for cleaning food grade equipment) If they could buy cheap electricity and store it in a sand battery, massive advantage. For industry electricity cost is very sensitive to peak demand, this could be a "base demand."

[@pjackson8322]

Just came across "sand batteries" and "water batteries" today. This can truly be a game changer but the info I've seen on youtube or from companies scratching the surface, is either very crude or not the best use of the tech. So many ideas just hit from discovering this. Super cool. Ancient Egyptians just may have had something going on with those pyramids and all that sand ;)

[@agw5425]

In combination with wind/solar and a heat pump you can get 3-5 times the heat energy in to the sand battery for the same amount of power, using as little as possible is always best don´t you think?

[@paullehto2294]

I live in cold climate New England and heat 80% and 95% of my hot water using vacuum tube type hot water solar panel. I have hot water passing Thur 2 ft deep sand bed under house slab (hydronic system) . Summer, I heat the pool along with hot water tank. The reason I don’t add more solar collectors and provide 100% of heat is that many days during winter I would make house tow warm. I have minisplit that backs up this system in very cold days.

[@greggreg2263]

Thanks for the video it helped me understood everything I was a little puzzled about the sand battery 🔋 when I first heard it🙈

[@Oliveir51]

Any sand will do including salted sand beach ? Or is the metal tubing subject to corrosion ? You mentionned shortly depends on chemistry...

[@aliciamesa5314]

Have you seen the "Terra cotta" heater set up; seems like a very good individual system and so cost effective. I plan to use it in my van nomadic journey.???

[@johnswartz2423]

In sandy desert we could have modules on shipping containers that make the concrete bricks that would make the concrete silos it would make the generating power because they would hold the sand in a tower

[@markpoweski3470]

You missed part of the problem for the Texas freeze out. Alternative energy (windmill and solar) went off line. With conventional energy generation failure resulting from extreme conditions, there was a insufficient amount of conventional generation available

[@GairikBanerjee]

The heat stored in the sand batteries, if the sand temperatures are high / hot enough, can be turned back into electricity -- by heat transfer to water .... to steam, to drive a steam turbine, you know, the turbine ferry. basically a thermal power plant run not by burning fossil fuel, but using theheat stored in the sand. The thing to explore there would be the proportion of energy loss in the transfers, ergo, the resultant LCOS of the electricity derived. Ricky, I wish you would talk to Tommi and / or Markku at Polar Night Energy and explore this. Please also discuss the possibility of using Waste Heat Recovery technologies to source the heat energy to heat the sand in the sand batteries.