Build your own Zero Energy Cooling Chamber (ZECC)

With some bricks and a little sand, you can keep vegetables cool without refrigeration. Staff from the World Vegetable Center Eastern and Southern Africa Office demonstrate the steps in constructing a simple zero energy cooling chamber.
In Swahili with English subtitles.

[@paulmaxwell8851]

These people are brilliant. Necessity really is the mother of invention!

[@margaretarwari2219]

A nice, simple technology using locally available materials, simple know-how, and not labor-intensive! I am amazed! The small farmers are able to preserve their vegetables and still make them marketable!

[@JamesonStrode]

Not once does it say how cool the damn thing gets or how much cooler below ambient temp...wtf?!?

[@zaarkhananal7165]

I really liked hearing the presenter speak her native language, because usually whenever I watch anything with African people they're speaking in English. This was a very inspiring video. I really liked how they used inexpensive and innovative ways to help their people. I also really liked seeing Africans helping other Africans

[@KalpeshPatel78]

Instead of the hand, use a brick for measurement between a container or crate. That's what we do in our village for this evaporative refrigeration. Its quite ancient and works well in villages that has power outages quite often.

[@KalpeshPatel78]

@BrightLight It surely is. If you live in a hot region. Just too much water gets used. There are other methods to keep homes cooler.

[@KalpeshPatel78]

@BrightLight 1) Tiled roof. 2) Wooden insulation panels. That triangular shape that forms with the roof helps in venting out heat. 3) Depending on where you live and average wind direction you could build it in that fashion. 4) Here in rural India, we also cover external walls with cow dung. It smells when its fresh, but once its dry, it has no smell. Keeps the house cold in summers, warm in winters.

[@nvdxn]

To use this cooler do you wet the sand or the bricks, or does the wet hessian on top provide enough cooling

[@tenieshafyffe5771]

Does it matter….. it still works….the hand is okay to use, you can carry it with you, no extra work😃

[@Tomasz_Piekarski]

That brick was made with hand measurement too, so it makes no difference. ;-)

[@joedee1863]

I love to hear Swahili it is such a sweet sounding language. Ancient Persians used this technique storing food in big earthenware jars and soaking them at night time. Because they were placed between round buildings the wind would be funneled to blow around them speeding up the evaporation.

[@sudintechnology]

I love your dedication to make such a beautiful thing and to help farmers. Finally you have used physics EVAPORATION CAUSES COOLING 😊

[@patriciafisher1170]

Thankyou for this it was easy to understand and I am sure my husband and I could manage to do it even in our 70s. We live in Australia where it can be very hot and I am worried that the electricity will cease to exist so I am reasearching ways to keep our food cool. This way beats everything else I have seen so thankyou for this wonderful idea

[@holly1391]

I live in Texas and was thinking the same exact thing…I have a small grove of oak trees I could fit this under…

[@robertmartin4581]

Hello, I am most impressed with the quality of your presentation and tutorial video. I too have learnt something today, Well done!!!

[@kmrao06]

Very nice presenration thanks to the subtitles in English.

[@JamesUniv]

Thank you for this great video on building a zero energy cooling chamber. Excellent. I learned a lot. Very helpful and easy to understand. I hope to build one.

[@bluesage1528]

Thank you for the amazing presentation and sharing your traditional knowledge. Very precious!

[@mylittleparody2277]

Simple, effective, and nicely explained. Perfect! Thanks for sharing.

[@mohdabdulalhebshi5992]

I enjoyed the video and specially listening Kiswahili language

[@alexandrabol]

I do like this cooler very much, it is perfect for the surounding you live in. It is simple and available locally for everybody ☺♥☺ just love it.

[@ASingleVoice84]

This is wonderful because I’m in Canada and currently our gas and electric is getting very expensive and we all need to find ways to prepare for anything and not just that it’s a wonderful way that you have used natures abundance to be innovative, and with luming threats of war and other natural disaster’s around the world people may not have this convinces we have turned into a society of convinces and easy lives such as fridges and freezers but if something bad happen in the future and going back to simpler ways before modern convinces were so very abused around the world putting nature at its brink of complete loss so I find other ways of using and constructing structures like this invaluable if life becomes ways of old thankyou this was very informative and easy to understand what is needed to build one in Canada we don’t have palm trees or banana leaves but we do have clay and brick and is readily available if ever needed to construct a cooler, blessings & love from 🇨🇦 Canada

[@catalhuyuk5525]

This is excellent. Necessity is the mother of invention as they say. I'm wondering if the damp cloth that is placed on top of the finished unit was long enough to dangle into a bucket of water if the wicking of the material would be enough to keep it damp and cool.

[@ramakumari594]

Dear sister.very nice natural storage of veggies nd fruits without fridge.I'm an ardent natural lover.Tku.Keep going.Best of luck.

[@MichaelRogersJesusrules]

Awesome thanx for sharing .great work there.God bless you and the family

[@DeneF]

Sat here in England and found that amazingly interesting. Thanks.

[@vinuchoudhary6676]

Hey i am from india And now you r a real hero "Jai jawan, jai kisan"

[@JesusSaves86AB]

Awesome video and excellent evaporative cooler. Wet wool on the top of the lid works also. God bless.

[@acuzamendoza]

Roseline Marealle, gracias por tu sencillez en enseñar y trasmitir el conocimiento técnico en la construcción de esta innovadora tecnología de conservación de alimentos, a pesar que solo hablo y entiendo mi idioma Español, comprendí el proceso de construcción por su excelente puesta en escena de un paso a paso secuencial y lógico, un video didáctico, excelente, muchas gracias, desde la parte mas septentrional de Suramérica, en Colombia, en Riohacha capital de La Guajira, en donde Cohabitan varias etnias totalmente opuestas en cuanto a clima, unos en el semidesierto de la Guajira, La etnia Wayuu y otros en la Sierra Nevada de Santa Marta, montaña glaciada y son el corazón de 4 pueblos indígenas Los Kogui, los Arhuaco, los Wiwa y los Kankuamos. Señora Marealle su aporte va para los indígenas de la Etnia Wayuu, los habitantes del desierto. Un abrazote, saludos, cuídense.

[@thepeopleplaceandnaturepod8344]

This video gave me hope for the future of our planet. 🍀

[@kelhawk1]

Seems like a good way to build a cool dwelling.

[@keithhowell4138]

Very interesting ,glad to find this video

[@hootiebubbabuddhabelly]

That's brilliant! Thank you for sharing! You explain things very well with not just the "how" but also the "why". This will help people to understand what alternative materials they might be able to use, should they not have what you show here.

[@olivier2553]

I managed to recognize one word in Swahili, even if I haven't heard the language since I was less than 10, 50 years ago... It is a good thing that ancient techniques like evaporative cooling are being used again. When I was working in Afghanistan, I saw the use of a giant evaporative cooling fan for a large marriage venue, that was exceptionally effective.

[@longjohncrypto688]

Teamwork! Wonderful. Very good instructions. Thank you for sharing.

[@Seanersee]

That's pretty cool.

[@JonJaeden]

Very interesting. Thank you for showing this. What is the atmospheric relative humidity where these are used? What are the environmental limits for using this technology?

[@oriraykai3610]

It works in Africa, which appears to be very dry. I doubt if it will be as effective in high humidity (like we have here in SE US, more than 70% many days).

[@SandcastleDreams]

Thank you so much! I knew that a clay pot inside a clay pot would work to keep things cool from condensation, but I never heard of this brick cooling chamber. Excellent!

[@anupdev5845]

It works because those bricks are also made of clay which is a porous material that absorbs water.

[@duskintheforest584]

Well done and helpful to many. It's important to wet down the bricks during the day for efficient cooling g effect

[@eave01]

WOW! So beautiful! Such a beautiful presentation! Wow. Just wow.

[@truthseeker9688]

Smart solution...simple and effective. Thanks for sharing!

[@tammynevil2422]

Thanks for the English translation

[@lifeunderthemic]

If made into egg the inside will remain cooler. There have been egg shaped containers and storage units made throughout time. The city of London rediscovered a large egg shaped building for storing ice. Unnatural form is a resistor of atmospheric pressure and you will not need to water as frequently if at all.

[@osmbsmy.706]

thank you for the english translation and great edit.

[@coletventer3044]

greate idea know that our great grandfathers has to do something like this to preserve foods...I must show this to some of my black friends also. thanks for good video

[@SmallRiver-v5o]

Instead of using burnt bricks and sand, both energy intensive, can this cooling chamber either be built with mud? This would mean digging and using the mud from tbe hole instead ofbuilding using the negetive space as the storage as well as the retaining wall of the hole for stability! Deeper in the earth is cooler. Ofcourse, it would need plastering. Your people are naturally aesthetic and superb builders💚👍

[@johanneberube6682]

Brillant! 👍

[@skee6706]

I didn't understand a word you were saying but I understood everything Thank you for the wonderful video. And we think we are so smart LOL I wonder if this would work in cold reigns for the summer time

[@kendrickmartin1612]

I love thist sooo much . the man will steal this and call it by another name .

[@kayestarre947]

Excellent video! Thank you so much for this valuable information & demonstration :-)

[@vinuchoudhary6676]

Your technic is tooo famous in india Keep it up!..

[@dawnlapuh4248]

Awesome tutorial. You are very good and related step by step with explanations. How do they work in a snow climate?

[@glomontero6011]

This is a wonderful cooler, thank you for this information.

[@MAXLAMENACE2M03]

Bravo...very good video and explanation......

[@skinpro2000]

Great idea, really good video, shows you what to do if there’s no electricity. And how to store bigger quantities of vegetables. How often do you have to water the sand? Once per day? Several times?

[@stompthedragon4010]

She aid 3 to 4 times for the cloth on top

[@pacedelacruz4913]

Asante na Mungu akubariki kwa video hii nzuri.💖

[@rohanwadibhasme8729]

Pace De La Cruz

[@stephanealegoria7016]

Beautiful language. Since evaporation produce humidity around could it be worthy to settle a storage room for seedlings on the side under the wind?

[@profpuffofficial2]

Living in south africa with loadshedding , probs gonna do this

[@Boscovius]

I thought you would need to water the sand in between the brick walls to make this work. I have seen similar devices such as a clay pot with a lid nestled inside a slightly larger pot with sand in between them. In that design the water in the sand evaporates, chilling the contents of the inner pot.

[@petratical]

Right, as it is called a Zeer.

[@angelacharles4573]

This is excellent can you give ideas for meat

[@bevc5261]

Thank you for sharing this!!

[@alpha-alpha-alpha]

Now let's use this technology to cool an entire house. No electricity needed! A house can be designed around this principle that this cooling box was designed. Bricks, water, sand and spaces in between. I can totally imagine this.

[@amyedwardselrington3309]

God gave her a beautiful mother/_ ore just a beautiful soul¤○●.

[@girijanochur9881]

I will certainly make this , I need only for my needs ( home needs ) . It's easy to shift too as bricks are not fixed permanently

[@portaadonai]

When explaining how to do something. It is important to explain why your doing each step. So that the people learning can troubleshoot problems, make modifications, and improve the system later on. 3:25 You explain to space the containers apart, aw well as the brick wall from the containers. I am sure its because they need good airflow. But you do not say that. This also would explain why your using crates with holes in them, to assist in more airflow. When someone understands this, and why evaporative coolers need good airflow combined with moisture it makes a big difference in their ability to contribute instead of mindlessly following instructions.

[@shinderkalsi6941]

thanks sir to give such a good information..

[@duncandixon6203]

Probably won't be useful in your climate, but evaporation refrigeration is awesome - you touched base with that and digging a hole. But you can also incorporate wind, natural cooling in the ground, and solar heating to get things to 4-5°c. Of course though, if you don't have wind, you can simply use a solar powered fan. And if it's not hot where you are, fresnel lenses used carefully can help (just don't start a fire)

[@armsregkralkidna1359]

Are we need to soak the sand with water everyday or just when build it only

[@LuisAlbanes]

Hello, do you have data of the temperatue differential? Thank you

[@187vikassingh5]

10degree celcius lower than outer or surrounding temperature

[@aventurasenelsalvador1750]

@@187vikassingh5 Thank you!

[@LuisAlbanes]

@@187vikassingh5 Thank you!

[@BanfilaBianca]

Love the explanation. Pls who has an idea if the walls can be permanently built with cement blocks and plastered with cement?

[@petratical]

No, the idea is for the water soaked bricks and sand to get air and evaporate, causing a "cooling effect!

[@daliafellows]

@@petratical what keeps sand from settling to ground after many times of being watered?

[@haleymglick]

I wonder if it would be even colder if you did several layers underground....🤔

[@clavo3352]

This is a wonderful idea! I wonder if an air vent (1) at one lower end of the chamber having air blown into the chamber; and blowing over a bucket of water would further increase the evaporation by the chamber thus providing even further cooling for cooling water or tea to drink? Capturing sunlight on the shed roof in a hose or pipe would cause an air flow Especially if a sponge drip were incorporated to drip water into the pipe which would expand upon solar heating resulting in an air flow to be blown into the air vent(1) .

[@colleenforrest7936]

This is a great design and easy to build. In keeping with the all natural theme of the project, could you build a tray slightly bigger than you wanted the plastic to be and grow a kombucha tea scobie (fungus) inside the tray that when dried out and killed be used in place of the plastic? The untreated scobie is not water tight but handles like leather. I've seen videos where coconut oil rubbed across made it more water tight. Old plastic sheeting may be easier to find and easier to use than a kombucha starter, though.

[@okaycola2]

Nice work

[@davebean2886]

How much cooler inside the structure than the outside air temperature?

[@RoyEncela]

is it possible to make a whole house out of this? or at least just a few rooms? 😅 (sincerely, from a person who lives in the tropics and is very concerned with the amount of electricity we use for air conditioning)

[@gohawks3571]

Someone mentioned above about a wedding venue made like this👍

[@chichinwofor4325]

ACE - AWESOME. THANKS.

[@Biovineet]

It's great . I didn't see this type of cooling system

[@giorgiomartini5246]

Which is the difference of temperature of internal chamber compared to external? How frequently the bricks walls needs to be watered?

[@olivecaramel9574]

Wasilisho mzuri .napenda unavyoongea kiswahili

[@duskintheforest584]

An hour and a half west of here the climate is quite dry. In the 60s they still used evaporative coolers (electric fan type) in stores or businesses. The mom and pop stores were a cool haven in a hellishly hot place. Hebbronville, Texas is fit only for rattlesnakes, horny toads, scorpions, tarantulas and bats at night. Never go there in the summer! Anyway those evaporative coolers were a Godsend for poor people living there.

[@BLESSINGS-11777]

Beautiful 🥰

[@pompkinkingplays1461]

does this work in more humid areas or would the water in the air just off set it?

[@stompthedragon4010]

Amazing. Sharing. Thank you.

[@thehazelnutspread]

Basically it is a giant zeer pot but I like this better as you can make it any shape & size.

[@lamuska24]

This is great! Thanks!

[@dibensy59]

It seems like it would be good for storing apples. And keeping mice away.

[@BobSchoepenjr]

Well done !

[@gibraltabago]

What are these bricks made of please?

[@loneforest6541]

nicely explain...thanks

[@abundantYOUniverse]

Very well done thanks!

[@donaldduck830]

Where I am at, a base layer of sand like that is merely an invitation for ants. Who would then dig up the sand unevenly and then the construction would shift and settle unevenly. To make it ant-proof we would need a layer of something caustic, eg (quick)lime. Besides the fact that a brick costs almost 2 USD, making this a rather expensive endeavor. I have stored Veggies in a closed container in a covered hole in the ground. Soil temperatures are rather constant, even at shallow depths so it works as a natural fridge and costs a fraction of this luxury building.

[@abdallahahmed8728]

Thank you very much for this video

[@mugiraharjo6270]

So, how much temperatur and humidity can reach with this method ?

[@juliechamberlain7982]

Thankyou..very informative

[@prettylittlephotons]

Love it!

[@malaypatel4426]

Can we store meet or fishes in ZECC?

[@surbhi7977]

awsum😘 its amazing

[@mynameisgulzar]

Does it need watering?

[@v10moped]

What they dont tell you is these only work in dry windy environments. Humid areas still need refrigerators

[@truthbknwn]

I'm surprised that the sand doesn't have to be watered regularly.

[@Jahmastasunherbalist]

These only work in dry climates right?

[@mikebetts2046]

Fruit Fuels Freedom Jason Kvestad, my guess is correct. Evaporative cooling does not work well in humid areas. For example, some places in Western U.S. used evaporative coolers instead of AC. Those would be useless where I live in Michigan.

[@grizzlygrizzle]

They work, but less well. Humidity is relative, right?

[@Everythingfreshandsassy]

Smart people!!!!

[@buggerit]

very clever

[@mawadahmwanyali5515]

Good job Can i build this inside thevjouse

[@BanfilaBianca]

Yes you can .seen one in a video in an Indian home and it worked pretty good.

[@zilakaify]

If this techology can apply to our house. Air conditioner will no longer necessary anymore. Hope this will happen soon.

[@joypereira2665]

the real beauty and cutyyyyyyyyyyyyyyyyyyy

[@Sparkplug023]

Awesome!