4kW Heat Pump

Home Made 4kW Heat Pump
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Music: Stalling by Topher Mohr and Alex Elena

[@Pats-Shed]

I'm a refrigeration engineer in Ireland. R22 has a GWP(global warming potential ) of 1810 Kg of CO2 per Kg of gas. Wheras R290 (propane) has a GWP of 3 and no ozone depleting potential. I would recommend using refrigeration grade R290 as it is pure and will not cause the oil to become acidic , which will cause leaks and attack the electrical windings in the compressor. Your explanation of superheat was a little confusing. Superheat is best described as amount by which the temperature of the gas is above the evaporating temperature of the gas at a particular pressure. If the gas leaving the evaporator is at 1.0 Bar , it's evaporating temperature is approximately -10.0°C and if the temperature of the gas at the same position is measured at +2.0°C , then the superheat is 12°C . Ideal superheat is generally accepted as being between 4°C and 12°C , but with propane it's 8-12 °C as it's slow to evaporate.

[@paradiselost9946]

*super-saturates*

[@guringai]

I'm really impressed that you used propane for the refrigerant gas. We just had a reverse cycle air conditioner taken out while doing some building renovations. The unit previously had R32 (which was removed and destroyed correctly) & our refrigeration mechanic put a propane mix in.

[@lazerusmfh]

Interesting to see a homebuilt unit. I work a lot with heatpumps, and depending on if you're heating or cooling you can get some crazy high efficiencies. one of my units has a rating of 14 HSPF which is insane!

[@joelshopefullyhelpfulvideo3010]

Happy to see you back, love this idea and system. I’ve played with similar concepts using propane, It’s easy to get it it works surprisingly well as a refrigerant if the system is built for it. What I find great about propane is the fact that the low and high pressure are so much lower that the new refrigerants. Less pressure, less chances of leaks.

[@robertling9872]

Interesting video in a nice workshop. Good to see you making new videos again. Good luck with all your new discoveries.

[@velianlodestone1249]

It's amazing to see some material demystifying water-to-water heat pumps, these devices are so prohibitively pricey that they make ground (or pond) pumps very unattractive. Your approach with plate heat exchangers is very unconventional and I'm loving it.

[@sebastianmuller1210]

In one video with the same topic, the person used propan as well. He said, that the propan for bbq use is added with sulphuric stuff to make it smelly. This sulfuric stuff reacts with the oil in your compressor and you get damage over the time and unusable oil. He removed the sulfuric stuff by transfering the propan through oil before using it in his system. Perhaps that is something to consider.

[@mikafoxx2717]

They dont yse sulphuric acid, they use a highly stinky substance in just a few hundred ppm. I think it's called Methyl Mercaptan

[@ElectroTree01]

It’s ethanethiol but it does have one sulfur atom Basically ethylene+hydrogen sulfide

[@mikafoxx2717]

@@ElectroTree01 somewhat ironically, both of those are refridgerants.

[@ElectroTree01]

​@@mikafoxx2717 maybe not hydrogen sulfide(although it is possible) because some of its qualities. But ethylene/ethene/r1150 is

[@mikafoxx2717]

@@ElectroTree01 Most Refrigerators until after the invention of Freon in the 30's used sulphur dioxide as the refridgerant! I mixed up hydrogen sulphide and sulphur dioxide so you're right.

[@CelataForCongress]

Keep on making dude! I've been searching the internet for ways to DIY a heat pump and there isn't much information out there. This is great! Keep making videos dude!

[@horstel1980]

When i build my last heatpump, I used compressor running amps to meter in the charge, it worked very well. I am looking foreward to the performance data on this system. Keep up the good work !

[@Biokemist-o3k]

I love super cool complicated looking tubes and wires but then I am a chemical engineer...Great job my friend.

[@philxcskier]

This is very cool! I am an HVAC designer but I would love to make my own system from scratch and experiment with different thermal storage methods.. it would be very fun to design something that can store waste heat to be used later on. great job! Cheers from Canada 🇨🇦

[@GeoNord]

I congratulate you on your inventiveness, if you want a certified and ready-to-use heat pump, remember us!

[@Seyahremraf]

I was so happy to see a video from you again

[@googacct]

Nice video. I saw the AC Service Tech channel listed in your video description. It is a great resource for learning about HVAC. He recently did a video on electronic expansion valves. You might want to investigate using one of those instead of using a a thermal expansion valve.

[@ShafaqIftikhar-pw9ld]

An absolute awesome set up and pleasure to watch. Thankyou for the insight to your brilliant mind!!!!!!

[@jacksonblack9408]

You could get slightly purer propane by putting the bottle in a freezer first. The main contaminant of propane is butane. Butane has a boiling point of -1c while propane is -42c, so the colder the bottle the higher the proportion of propane. Looks good tho, good work! I'd like to do something similar one day.

[@kreynolds1123]

If there is any sulpher based oderants, bubbling through a sodium hydroxide solution will remove it.

[@CosumuHcos]

very cool. in Australia you can get a refridgerant called hychill. anyways its a mixture of propane and isobutane (without any n-butane). normal lpg is a mixture of propane, isobutane and n-butane. there are a few important take aways: when charging a system try to charge it with liquid lpg so you get a mix of butanes and propane, if you charge with gas you will get mostly propane. the other thing is that n-butane is much more sensitive to superheat than isobutane and propane. hence the reason that n-butane is removed from hychill for its use as a r134a replacement. anyways this project is very cool thanks for sharing it.

[@TheGaussFan]

kudos for daring to experiment with heatpumps, and being responsible enough to do it with propane to minimise environmental risk. Just please be sure to work well away from occupied dwellings.

[@RaymondNeuvel]

Nice explanation of your project, funny that I have almost exactly the same project. My project was also built in the basement. I have floor heating in the barn that I keep warm with my heat pump. My barn is insulated to the best of my ability to have as little loss as possible. I have been running on my geothermal source for 4 weeks now. income temperature 8 degrees and outgoing my source IN 6.5 degrees. success continues

[@SystemHacker23]

Nice project! Would've recommended you have the refrigeration cycle on display when explaining the different states of the propane as you were explaining how it works. Can't wait to see more of this project.

[@TheDIYScienceGuy]

Thanks! Yes, I tried to do that with the animation in the photo I made, but I agree that what you propose would have worked better. Thanks for the tip!

[@linuxranch]

When you order your txv, make sure to order one with the proper refrigerant in the bulb. You want it to develop gas pressure on the diaphragm that matches the characteristics of the refrigerant in the line you are sensing. Commercial "fuel" propane is a mix of several gassed, including propane. The only thing they really guarantee is the BTUs per cubic foot equals what you would get if you were burning pure propane. It would be better to get your propane from a refrigerant supplier. You should also look into mixtures of iso-propane and other gasses like iso-butane. There is a concept called glide that can improve your volumetric performance of your system. Looks like a lot if fun. It is interesting to see regulatory agencies begin to rethink refrigerant uses in light of the GHG problems. There are new regulations that allow for the use of flammable gasses, if the volume of gas is under some threshold. You might want to box in your refrigerant loop, and put a flammable gas sensor inside. A "pump down" valving system, can then sequester the gas in the receiver/drier, shut the inlet valve to the receiver/drier, trapping the refrigerant, before it reaches the lower explosive limit. Turn the compressor off and close the valve, when the pressure on the suction side reaches 0.0. All the gas will be safely in the receiver. Use diaphragm type solenoid valves. There are no seals to leak. You can get shell and tube heat exchangers with two output paths.. one glycol and one water. Personally, I'd run glycol and water in the "house" loop all the time. Then I'd run glycol and water mixture to another ground water heat exchanger. Instead of valving refrigerant, valve the glycol side of the heat exchanger. If you want heat as your product, pump the condenser side to the house. If you want cool, pump the evap side to the house.. So long as you maintain flow, the ground water side won't freeze. When you shut it down, make sure the water runs for long enough to evap all the liquid, so it doesn't freeze in the heat exchanger.

[@linuxranch]

Adding to my earlier comment, If you have pets, glycol is toxic, and has a sweet taste. Pets will lap it up. Organ failure isn't a nice way to go. Get a non-toxic antifreeze.

[@ShafaqIftikhar-pw9ld]

Can you provide a diagram to help improve this wonderful design with what you have suggested. Thanks in advance

[@TheDIYScienceGuy]

Thanks! I will include that in the next video.

[@fredfred2363]

some good points in there 👍🏻🇬🇧

[@radimkundrata2398]

Don't forget to include refrigerant receiver or even sight glass when upgrading to TXV ☺️

[@nielsdaemen]

You are a genius! I will build something like this too once I have my own home.

[@duncancairncross]

I have a home made heat pump that heats my house - ground source - hot water - underfloor heating Its a LOT less complex than that!! Compressor, Two heat exchangers and the evaporator

[@fredfred2363]

His only looks complex because he's added guages and stop valves. Plus the option of running in reverse for cooling. You're right. If you use it only as a heat source, it can be really simple.

[@myounges]

Nice to see you around again. Thanks for the video impressive! Cheers!

[@CompactFlesh]

I recommend to insulate all the bare pipes of your central heating - and when finished, also in the heatpump.

[@agritech802]

Well done

[@michaelallison5654]

Very well done👍👍 Impressive.

[@HomeDistiller]

you shouldnt need any cooling on the compressor, you want just enough excess refrigerant that some cool gas makes it back to the compressor to cool it without enough excess to have a hydraulic lock up

[@TheDIYScienceGuy]

Yes, in the tests I did I noticed that overheating of the compressor wasn't really an issue. What you described was also what I thought what was going on. Thanks a lot for the confirmation! 👌

[@الدعوةالىالله-خ8م]

@@TheDIYScienceGuy 🔴 What Is Islam? 🔴 Islam is not just another religion. 🔵 It is the same message preached by Moses, Jesus and Abraham. 🔴 Islam literally means ‘submission to God’ and it teaches us to have a direct relationship with God. 🔵 It reminds us that since God created us, no one should be worshipped except God alone. 🔴 It also teaches that God is nothing like a human being or like anything that we can imagine. 🌍 The concept of God is summarized in the Quran as: 📖 { “Say, He is God, the One. God, the Absolute. He does not give birth, nor was He born, and there is nothing like Him.”} (Quran 112:1-4) 📚 🔴 Becoming a Muslim is not turning your back to Jesus. 🔵 Rather it’s going back to the original teachings of Jesus and obeying him.

[@jasonharrison25]

You also want the compressor to run a little warm anyways to keep refrigerant from collecting in the bottom and diluting the oil and damaging the motor bearings. Compressors expected to run during winter will often have band heaters (crank case heater) around the lower half to add heat. So best to have the superheat set correctly to maintain just enough heat in the compressor to keep it happy

[@k.bellingham8335]

Woe, that was a lot of information! Good info for sure. Just a lot to understand in one video

[@iamwangine8752]

Well, that take some time , good job for result. I switch all diy R410 systems recently in HVAC ground-air heat type to the R290 (propane) and how water . I'm using 5 small compressor (360w) 4 on/off and 1 inverter for fine heat control . I still have issue with oil return because only in hard winter i use 4 maxim , one is alternated but never need 5 . But from ground and wasted shower water the COP can go up to 7-8 definitely R290 is a better choince instead of R410

[@emichemich4938]

Propane is better than R410?

[@iamwangine8752]

R290 (propane) has a GWP of 3 compared to R410A's 2088, an ozone depletion potential (ODP) of 0 like R410A, operates at 30-40% lower pressures (approx. 8-10 bar vs. R410A's 12-16 bar), achieves up to 15% higher energy efficiency ratios (EER), and requires about 40% less refrigerant charge for equivalent cooling capacity.

[@emc4u2]

Hoi Tim, Leuk dat ik je kanaal tegen kom op youtube. Goede uitleg. 👍👍 Grt, Rene

[@TheDIYScienceGuy]

Hoi Rene, Bedankt! Ben jij een Rene die ik in levende lijve ken?

[@Alexander470815]

Measuring the superheat with just temperatures can be problematic. If there is a notable pressure drop in the evaporator it will be off quite a bit. The usual way will be measuring the suction pressure and temperature and calculate it with a saturation table. You really want the superheat as small as possible for best performance, TXVs usually will go for 5K as default. The plate heat exchangers look too small for 4kW. My Rule of thumb is 0,15m²/kW.

[@velianlodestone1249]

I would be very curious to know if they are capable of producing 4kW,

[@Alexander470815]

@@velianlodestone1249 Well it all depends on the temperature difference. With enough difference you can push 100kW through one small heat exchanger. One side at +200°C the other at -200 and off you go. But this won't be a efficient heat pump then.

[@pw6048]

I've looked them up, and they are capable of 22KW.

[@Alexander470815]

@@pw6048 useless number unless you define the temperature difference and media too.

[@awesomecat9470]

I didn't quite understand why you had to have four Heat exchangers I would think it could be done with two. Couldn't you put valves at the inlet of the cold and hot to redirect which heater changer the water went to for the heater versus Cooler

[@TheDIYScienceGuy]

2 for antifreeze and 2 for ground water. I don't want to accidentally pump antifreeze into the ground when mixing up valves.

[@kaf2303]

Excellent! Thanks for sharing your system is exactly what I want to build except Ideally I want to use co2 instead of propane, not sure if I can deal with the much higher pressures though. If you have any thoughts on that I would love to hear them. Cheers, Kurt

[@kreynolds1123]

I belive the biggest thing is that your compressor will have to be designed and built for thousands of lbs of pressure that a co2 system will need rather than the hundres for r22 systems. Small copper pipes will likly handle co2 pressure. But I don't know about valves guages. Certainly there is more to it but I'm not competent to give any rea)y good advice.

[@Sir-Dexter]

nice build

[@Sydzahir]

nice

[@Bordberti]

Hello, thank you very much for the great video. I would like to use a conventional, powerful inverter air conditioner from Midea for heating via heat exchanger as in the video. I want to heat the water in the heater. Everything works, but I don't have a control for the Midea outdoor unit, which simulates and controls the indoor unit. Does anyone know a device that can be purchased? What protocols does Midea use on the BUS cable? I am grateful for any hint.

[@jesshorn257]

Hvac guy but if you plan on doing a house build a scroll compressor is more forgiving about liquid slugs....more then likely your tin can (hermetical sealed reciprocating compressor) is not a good match. make sure the oil matches the ref and that the o ring seals match the oil. also propane is a excellent low temp and should move a lower density volume of gas so you want a compressor to match it. it is better to pull a low vacuum to ensure you don't have nitrogen trapped as you will have high head and a flooded condenser that will cause the moisture to overheat and create acid from your oil

[@pw6048]

Maybe the tincan is a good match. Propane is exacty the same as R290. So if this compressor is a R290 compressor, he's all good.

[@cybcarr]

Insanely genius. What it'd cost to build it @home as a DIY project, with no knowledge at all? :) Thank you

[@damiannora6173]

WoW! Impresive! Really nice setup :) What is the cost and how many hours did you spent at the job?

[@mattgruber3933]

i made a HP with an old window ac. i just turned it around so the evaporator is outside and the condenser is inside.

[@FiveSixEP]

How did it work? I did the same and it's barely blowing any heat at 50f

[@mattgruber3933]

@@FiveSixEP It took a long time to heat. at least 10-15 minutes. I like instant heat so i put a 250w heat lamp over the kitchen table. toasty warm, i love it. I suggest you try a delay timer to let it heat up before turning on the fan, if you don't mind the delay. Even an expensive HP will use a timer as nobody likes a cold breeze at start.

[@makoado6010]

hi. what the the presure on the heat exchangers? how it seems it need what capable to run at 30bar. what type u use?

[@emichemich4938]

Have you tried to convert air to air mini split to water to water?

[@patrickday4206]

Draw up prints . Nice project

[@TheDIYScienceGuy]

Thanks! In the next video, I will show the diagrams. But the project is still evolving, so they won't be final.

[@JoelGarcia-un4pu]

During summer you can heat your bath water and cool your house using the same electricity and save!!!!!

[@TheDIYScienceGuy]

Yes, that is the idea 😃

[@bruhmodzZ]

Hey, can you make an Video where you build an mini Vortex Gas Cannon?

[@utubeape]

If I could understand any of that I was say "that is brilliant, if this works then you should setup a company to reproduce this system for other people, likely there is big money to be made here"

[@RinksRides]

Nice video and explanation! What about Butane? For refilling lighters and small torches?

[@tadass.2675]

@Thediyscienceguy What heat exchangers did you use?

[@kazimir8086]

I am looking for a step-by-step guide to build a heat pump, can you recommend me one? I know and understand how it works, but don't have any experience

[@TheDIYScienceGuy]

Just start making a small one and build out from there. I have no other information for you, sorry.

[@raisinbartholamew5864]

I would keep an eye on those valves, if they get too cold they will leak through the stem.

[@arjanhassing6345]

Are you Dutch? Saw some "gamma" materials in your " polished satelite disc solar beam machine". Interesting thing you do with bundled sun rays...extra heat centered in a small area...🙂👍 Maybe a thing to not underestimate is the amount of generated heat could be (sometimes) become as high that it might cause things to ignite/put on fire when it reaches wood or dry grass etc. So let us all be cautious about that.. But like u said,interesting thing you did. Shall add it in my list to try to build sun power heating system for indoors because of the ridiculous gas prices etc.. Did allready pay 917 euro a month for almost a half year...

[@andypag1071]

How did it go? Is it working yet?

[@DC_DC_DC_DC]

I'd like to know why you decided to use 4x plate heat exchangers instead of a 'switchover' valve that are used in reverse cycle AC's (don't know the correct name of the valve but it's a simple device)

[@velianlodestone1249]

This is called a reversing valve, valid question 👍

[@TheDIYScienceGuy]

As I explained 2 heat exchangers for ground water and 2 for anti freeze. This way I will never contaminate my ground water.

[@DC_DC_DC_DC]

@@TheDIYScienceGuy yes this is clear however with a reversing valve (tnx Velian) you would only need 2 heat exchangers and a bunch less valves and manual switching effort to ...reverse... the cycle. Whilst maintaining the complete separation of media.

[@TheDIYScienceGuy]

No it's still te same amount of heat exchangers. 2 hot side 2 cold side.

[@DC_DC_DC_DC]

@@TheDIYScienceGuy the principle is that there are no more hot and cold sides, both are both, since you can reverse the flow of the refrigerant. So you just have a ground water side and an anti freeze side. Or do you want to transfer energy from ground water to ground water, or from antifreeze to antifreeze? Because yes then you need 4.

[@chuckbarkey630]

Nice work! Do you have an idea what the cop would be at different outside temperatures and on the inside, say, 35 degrees Celsius water out of the condensor?

[@TheDIYScienceGuy]

No, not yet, that has to be determined in the next video.

[@SiviVolk2]

Maybe I failed to understand, but where will this heat pump take the heat from? :) from air-water heat exchanger or from ground water directly?

[@velianlodestone1249]

One loop is ground water - the glycol could be a air-water heat exchanger

[@Thefreakyfreek]

Ik moet egt een soort gelijk systeem maaken voor aan boord en dan de rivier gebruiken om mijn cv te verwarmen Doe het nu met boilers

[@PeterdeLange-uh7ns]

Hey! Ik ben zelf ingenieur en sinds kort bezig met warmtepompen. STEK en alles in de pocket, en was van plan iets soortgelijks te doen! Ik zie dat je vrij goedkope platenwisselaars hebt gebruikt, dat was ik ook van plan. Maar hoe koppel je die draad aan het (vermoedelijk) SAE koper? Zie een aantal koppelstukken ertussen. Mooie video en uitleg, ik blijf kijken :). Mocht je eens willen sparren lijkt me dat wel leuk!

[@CoolMusicToMyEars]

Sir do you have a build circuit with list of parts, I'm very interested in building my own heat pump

[@TheDIYScienceGuy]

In this video, I show al the parts and a diagram: kzbin.info/www/bejne/pnXFXoaGqs6XkNEsi=MGh13tnbkyTDyIKX hope you like it!

[@RNA0ROGER]

I am kind of curious doesn't capillary tube hurt efficiency over say an electronic thermal expansion valve?

[@bsod5608]

You are right

[@angellestat2730]

Making a heat pump using ammonia is harder or easier? It would be more efficient or not?

[@TheDIYScienceGuy]

Harder. You can't use copper because ammonia will dissolve it. But yes, it would make it more efficient.

[@kreynolds1123]

Propane flamibility is concerning enough, but anhydrous ammonia is both flammable and toxic enough that a leak may potentually kill you in seconds. To make a point, Sadly, I remember being shown a video of a sherif who came up on a leak and he was out in seconds, and shortly afterwards stopped breathing. Anhydrous ammonia is potentially very dangerous.

[@luimackjohnson302]

Amazing! Thank you for sharing this video. Greetings from Madang, Papua New Guinea!

[@قَسوَرَة-ق]

I have a split unit, I am often asked can I use it to heat a room in the winter? But the answer was no, it can only be used for cooling in the summer, otherwise it breaks down, so is this correct? Please answer me.

[@TheDIYScienceGuy]

If it's not to cold outside it should work. But is your ac reversible?

[@قَسوَرَة-ق]

@@TheDIYScienceGuy Thanks for your reply I don't know if it's reversible or not, It ( TOSOT ) split that has a remote control and I can replace between heating mode and cooling mode. However when I asked some technicians, they told me the split ( in general ) can be damaged.

[@TheDIYScienceGuy]

Ok well I don't know what they mean by that. Sorry I'm afraid I can't help you with that.

[@tadass.2675]

If you can switch to heating with your remote, that means you can heat in winter. But you should read about it in your AC manual-some pumps become inefficient in low temperatures, they may not have defrost capabilities (when it is below 0 Celsius, outside coils cover with ice from water vapour in the air).

[@RaymondNeuvel]

forgot to report. my heat pump and circulation pumps take total 380Watt/hour. And my barn capacity 12m3 capacity.

[@kaf2303]

How is it working out? I am planning 1 w/ an unused R22 2Ton compressor. Cheers

[@DLexEdition]

Evacuating refrigerant is illegal most likely in the European Union but isn't in the USA. However this is a really nice video, other than that.

[@Hood.Housekeeping]

Nvm what the law is….. it’s just wrong to do everywhere.

[@smolpener7430]

@@Hood.Housekeeping How does licensing effect the morality of the situation? You can do it properly without a permit, and improperly with a permit.

[@Hood.Housekeeping]

@@smolpener7430 that was my point. And I 100% agree. Nevermind the law. The law only matters if you get caught anyway. Don’t vent refrigerant to atmosphere to begin with regardless of its legally ok or not.

[@Hood.Housekeeping]

@@smolpener7430 What I was referring to specifically was venting all the gas

[@TheGaussFan]

US Federal Government requires EPA 608 certification for anyone who maintains, services, repairs, or disposes of equipment that contains refrigerants. There is a robust set of laws and consequences for improperly handling refrigerants in the US.

[@dreece2000]

Can someone explain how refrigerants are eating up the ozone layer like what is actually taking place? And when this burnt to a crisp hole that’s in the atmosphere that people are creating by spewing r22, 12, farting out their but what happens when all this Freon that goes out the atmosphere asking for a friend. I don’t just appeal to authority. Why don’t we just use ammonia exclusively if that’s the case?

[@OstrichWrestler]

Re: ozone layer: iirc Old refrigerants such as R-22 rely on CFCs/HCFCs and in the upper atmosphere there's suitable UV radiation to break them apart. The chlorine that breaks off combines with stray oxygen that saps oxygen from the ozone cycle which takes place at similar altitude. The Montreal Agreement seems to have worked though and the ozone layer is slowly recovering as the gases decay so it can continue protecting us by absorbing a huge chunk of harmful UV rays. Ammonia is very popular in larger installations like fishing ships, ice rinks, warehouses, etc; but safety concerns hold it back for smaller installations.

[@mikkoekstrom8109]

Hi! Thank you for the awesome video! The thing I have been floating a very similar idea for my summer home which has rather poor insulating properties. Since it's a summer home, temperatures inside the house in the winter need not to be very high: ~5-10C to keep the pipes from freezing. Buying a full system would be prohibitively expensive so I was thinking of making my own system. Do you have any resources you could recommend me (besides the website mentioned in the video)? I would love to hear how the system has worked for you in real life and what COP have you been able to achieve in actual use.

[@TheDIYScienceGuy]

Nice idea! The COP of my system will be determined in the next video. I have no other information than what I have shown in the video, sorry.

[@kreynolds1123]

Sadly it will likly be that a commercially made heat pump will be cheaper, unless you get most of your parts very cheap or free.

[@daniel-vn4ql]

could we get a tutorial on how to build it. and how to get it running. you could charge 100 dollers no problem.

[@TheDIYScienceGuy]

I have a diagram on Facebook: facebook.com/234679430309932/posts/pfbid0zkfNAvgzUFJKLaCM4KE457xyGV7rhU7NqZDama54mQMgEzXyyejB6LAApa6TS8CVl/?sfnsn=mo hope it helps!

[@nealpaddock]

Love this:)

[@zweriuskriegsman]

Ik zie volgens mij Teflon tape op diverse plaatsen in het koelcircuit. Is dat wel een goed idee???

[@TheDIYScienceGuy]

Goed gezien! Nee dat is geen goed idee heb ik gemerkt maar het is in de experimentele face wel handig omdat je het makelijk los kunt halen. Later ga ik alles lijmen/solderen.

[@EdwaltvanOostenbrugge]

​@@TheDIYScienceGuyik dacht al dat je een Nederlander was😅 mooi ge engelst Prachtig om jouw filmpje te zien. Ga zo door🎉

[@ElTelBaby]

Spill the beans What is a TXV

[@TheDIYScienceGuy]

Here are some beans for you: en.m.wikipedia.org/wiki/Thermal_expansion_valve#:~:text=A%20thermal%20expansion%20valve%20is,metering%20device%20and%20an%20evaporator.

[@ElTelBaby]

@@TheDIYScienceGuy ... ROFL There R a lot of beans in that TIN... Many Thank...

[@First2ner]

Nice, just what I am looking for. Do you know of any cheap sources for heat exchangers?

[@TheDIYScienceGuy]

Thanks! These are the ones I bought: www.wiltec.de/nl/Warmtewisselaar-RVS-10-platen-max.-22-kW-platenwarmtewisselaar/50671?affiliateCode=google_shopping&affiliateCode=google_shopping&campaignid=19196052844&gclid=Cj0KCQiAv8SsBhC7ARIsALIkVT2MULKqxz0UZUIlSPlbYFLVgSp0UBZz4vMJ5o5QRwCjAd6-Zr-m34EaAnc5EALw_wcB hope it helps!

[@First2ner]

@@TheDIYScienceGuy yes it does, many thanks!

[@CoolMusicToMyEars]

Amazing 👏 nice working project 👏 judging by the pipework around your boiler your very much into heat pumps & plumbing

[@AnthonyCelata]

I would really like to be able to build my own split system. They are not complicated at all but there is no information on how big of a evaporator or condenser you should use. Theirs just nothing on the internet to give any direction. Would be freaking awesome to build your own and control it with an Arduino loaded monitoring sensors. Would be easy if there were some standards to reference

[@TheDIYScienceGuy]

I would advice to just build something small to get a feal for it and then scale it up to your needs. Good luck!

[@AnthonyCelata]

@@TheDIYScienceGuy Hey! Do you know of any reading material? I've built small ones before and I've leaned to charge window units. I just want to know if there are any calculations I can do to size coils on a given tonnage. Thank you! I need to re watch this.

[@Jack_of_all...]

Could you confirm what copper pipe you use (hard or half hard and OD and wall thickness

[@TheDIYScienceGuy]

Both hard and soft. Wall thickness 1mm. Wat do you mean with OD?

[@av_oid]

@@TheDIYScienceGuyI think he means Outside Diameter.

[@TheDIYScienceGuy]

Ok thanks! OD is 15 and 8mm

[@mechanicalmoron2251]

sream engine?

[@TheDIYScienceGuy]

All in good time, my friend, all in good time. Definitely this year!

[@javierlindenthal6680]

You should consider that the restriction with the capilar tube wastes energy and might be replaced by a small pump converter tu a turbine ❤ maybe running the air fan

[@Paberu85]

The impact of R-22 as a refrigerant, as well as R-12, on the ozone layer is negligible. The problem is rooted in R-12's low price and overproduction, which resulted in its usage as a propellant in all possible cases with disposable pressurized cans (deodorants, spray paints, dusters, air fresheners, etc.).

[@TheDIYScienceGuy]

I think you are right. But still, if you have the possibility to not vent R22, then you should not do it. So there is no excuus

[@vevenaneathna]

i agree. r22 and even more so, og r12 have like 3-4x the volumetric efficiency as modern refrigerants. freon also runs at an exponentially lower head pressure. the effect of these 2 factors means the COP for older refrigerants was much higher, and the wear/tear and lifespan of older compressors was significantly longer. just like turbo charging your engine, higher pressures means way faster wear n tear with more noise/vibration/harshness issues. newer compressors crap out after a few years, and pose an explosion risk, while gobbeling up more power for the same amount of work. all i know right now is there are many signs that the ozone layer is recovering, and there are many signs that co2 is continuing to rise.

[@Xsiondu]

I subscribed at "HOME MADE HEART PUMP" haven't even made it 3 seconds into the video

[@P10101G]

Sehr cool.

[@ww07ff]

5:50 😂😂😂😂😂

[@AgentOffice]

You really mean diy

[@mdrafiqul3358]

😀

[@raylawrence1]

As a novice in this field I congratulate you on your build. This video confirms my opinion that to install a heat-pump into my home will provide a nightmare of complexity that will require endless expensive maintenance over the years. Whereas I can personally trouble-shoot my current Central heating system, there is no way i could deal with the endless pipes, valves and sensors depicted here. So, apart from the known inadequacy of heat-pump home heating I think this system is far to complex to be practical as a reliable and cost effective installation in my abode.

[@ryanclarke2161]

Heat pumps (air conditioners to the rest of the world) are very reliable and realy good heaters. I've been installing and dealing with them for years,

[@zlotvorx]

Heat pumps are mostly set and forget devices. Most problems come from inadequate installers. When troubleshooting heat pumps the three most important things you need to look at are circulation, circulation and circulation.

[@imaginitivity7853]

'known inadequacy' is either pure fiction, spread by vested interests like fossil fuel suppliers, or the result of poorly designed or installed systems. They are widely and successfully used in places like Norway, where ambient temperatures are regularly lower than in places where 'they can't work' according to said vested interests. They're no more complex than a domestic air conditioner.

[@kreynolds1123]

5:54 did you say imperial system or inferiorial system? 😂

[@DLexEdition]

Same thing, right?

[@kreynolds1123]

@DLexEdition No. But I can laugh at a joke.

[@TheDIYScienceGuy]

I said, inferial measurement system. 🤪

[@kreynolds1123]

@@TheDIYScienceGuy i understand metric system usefulness. But I prefer to use units I'm familiar with. I understand kidding around, but if it's denegrading (even in jest), that's at risk of alienating people. It's up to you to decide if that helps what is important to you. 😊 by all means, espose the benifits of metric, but trying to shame people away from imperial units tends to have the opposite effect on those who use it.

[@TheDIYScienceGuy]

It's just a joke. Nothing more.

[@robertlackey7212]

I am interested in making my own motor fuel (ethanol) and I have been wondering if a heat pump could move heat from the condenser to the evaporator in the still. Is this practical ?

[@TheDIYScienceGuy]

Yes, of course! That is basically how de humidifiers remove moisture from de air, cooling the air makes the moisture condense, and then the cold air removes the heat from the condencer. In your case, you would put the heat into the liquid.

[@robertlackey7212]

@@TheDIYScienceGuy The water/ethanol mix needs to be vaporized quickly once the sugar turns to ethanol because if you wait it will turn into vinegar. So it needs to be big enough to vaporize at least 50 gallons of water in a short amount of time , But I don't know how short , a hour should be fast though but maybe 2 hours would also work. you could say 1 hour for 50 gallons and if you have 2 hours you could just increase you batch size to 100 gallons. Would a system that could vaporize 50 gallons in 1 hour be very expensive ?

[@lewiseds]

@@robertlackey7212wouldnt vaporise it quick enough as max temp youd probably get through the could is 60-70 degrees

[@robertlackey7212]

@@lewiseds I'm not a expert but I'm pretty sure it needs to get hot enough to boil water. A lot of people have tried and failed to use solar. The "mash" bubbles CO2 keeping the solids afloat and as soon as the bubbling stops the solids sink and conversion to vinegar begins and this could be at 1 AM in the morning it is unpredictable. As soon as the solids sink you have to turn on the heat and get it up to boiling temperature and start distilling out the ethanol. American yeast will yield about 14% ethanol , in Brazil there is yeast that will yield 17% ethanol.

[@TornadoTromboss]

in theory, but getting it dialed in is hard. it's all about the difference in temperature and the amount of cooling and heating required. a refrigerator is a heatpump, gets cold inside and hot on the back, start there.

[@XYZ-qb7iu]

Just use propane

[@tonydiesel3444]

Distill waste motor in to diesel fuel...

[@TheDIYScienceGuy]

Sorry, what do you mean?

[@tonydiesel3444]

@@TheDIYScienceGuy just what I said

[@TheDIYScienceGuy]

Ok, so put a waste motor into a distilling apparatus and make diesel fuel out of it?

[@simonmasters3295]

Armchair comment from someone who hasn't even asked or read why you are building it! Pah! So I like what I see, but are there challenges ahead with brittle plastic and condensation or icing? I would love to assist with Temp and Pressure sensing... Do you have Arduino skills? Where are you based? I am in UK

[@TheDIYScienceGuy]

Well, most of those things I'll have to figure out, but yes, I have experience with Arduino, so I'm going to use that to control it. I'm in the Netherlands. All help is welcome! 👌

[@joanankuijpers01]

Gaaf

[@kevinlsims7330]

In the 70's We Were Putting That Crap In Spray cans! We Released Dozens of Car AC Systems Into The Air Every Summer! The Hole In The OZONE Has Recovered!! The Biggest Hole We Blew In The Ozone Was With Space Flight!

[@sebastianmuller1210]

The world wide fckw release was much worse than any space flight. Those molecules of the ocon destroying kind stay up there for years and reduced O3 into O2. O3 saves ous from UV light, O2 doesn't.

[@kennydouglass6209]

I like the inferior style... Could've worded it better. When it's 100 degrees outside we know it's hot. When it's 0 it's cold. When measuring distance I like feet and inches. They have style or something nice. It is more complex but it's not hard to learn. Not inferior but different. Maybe for fun build something using feet and inches? Less than an inch is fun and once you figure it out it's like you know some code.

[@GarreTTTurncoaT]

1:13 Absolute BS.

[@TheDIYScienceGuy]

Are you a scientist?

[@GarreTTTurncoaT]

@ don’t have to be to know it’s absolute nonsense.

[@TheDIYScienceGuy]

But how do you know then?

[@surecom12]

​@@TheDIYScienceGuy he knows because he believes in conspiracy theories 😂