Fridge without electricity
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- Опубликовано: 16 окт 2024
- Between 25% to 50% of the world's food goes to waste every year. The Biomimicry Global Design Challenge sought to inspire students and researchers to find a solution to food spoilage issues in areas without reliable power. The winning team from the University of Calgary created a refrigerator that runs without electricity. The Windchill relies on concepts borrowed from the biology of insects, coral, kangaroos and elephants, to keep food at a temperature of 40˚ F.
Produced by Rob Ludacer
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1- Solar power fan = electricity
2- "inspire on insects, coral, elephants to keep low temperature" = It inspire in cooling by evaporation that is used by almost all the animal kingdom included us, this is also the method used by most of the industrial cooling machines.
3- it just use a fridge chamber that it is very isolated so it does not require much energy to keep it cool, but dig in the underground is not cheap either, neither the geothermal underground pipe installation.
One other thing they used to do in the Ozarks, they'd store milk/butter in metal cans, and keep the cans submerged in streams/ponds to keep it cold.
Evaporative cooling, same principal as a swamp cooler. The trip thru the earth pre-cools the air, and the evap cooler further enhances that cooling to get to 40F(4.4C). Might work better with a solar chimney on the output to provide a draft thru the system instead of relying on wind to provide the airflow. You also need a way to flush the plumbing as tubing below ground is notorious for growing mold and contaminating air that flows thru it...
Would it work in a place like Brazil? It is really hot and humid here +- 33C. I will dig a hole and check the temperature. I do not want to reach 4C. 20C is what I want for carnivorous plants that love lower temperatures.
my grandparents hat a box similar like this in their garden burried in the ground. Over night they opened the lid, but the big box was covered with thin sheets of glas nearly airtight, so the infrared light could radiate out away to open space and was not replaced by new radiation from above, so the box got colder and colder over night and in the morning the lid had to be closed of course.
This worked very well. It is the same effect, when a car´s windows freese with ice allthough it is plus 4°C (40F), as the car looses infrared through the windows but the warmer air from outside is kept off. The box was about 2m by 1m and was made from thik wood plated with galvaniszed steel sheets. And stayed there for decades.
This may not work for the Sahara for storing milk, but still it helps in other regions ...
These “students” are about a few hundred years late on inventing evaporative cooling refrigeration. Old systems actually work better too, but good on them for having a go trying to help out those without refrigeration.
It has a solar-powered fan, so it's not "without electricity". And blowing air into your cooler like this from air-pipes laid underground could expose your food to underground viruses, parasites, and bacteria. This is just a more expensive, and potentially hazardous, Zeer Pot cooler.
Unlike an air conditioning unit, this is just a two stage cooling process such that in the first stage, the air is compressed by going through the serpentine line underground and then further cooled entering the spiral coil where water (like refrigerant) evaporates off the tubing with the help of a solar power fan before entering the food storage box.
Instead of using eletrical batteries maybe really hot countries should use fresnel lens to power a water pump that goes really high, and then use the the water gravity effect to generate motion directly. Electricity is very inefficient.
How does the evaporating water cool the air
@@smartcookie11 when heat is absorbed by water it boils and evaporates (that is carrying off heat through steam)
Why not just use the solar panels to directly power a fridge?
Some people really concern about EMP attack, but too lazy to move their fridge (even the small one) inside any form of Faraday cage.
Oh wait, I forget about that fan.
because it would take too much power and it can't be provided by solar panels unless you have a lot of them, which is expensive
peejay mcdonald because there is not a solar powered living animal to inspire your invention with
DaLone One ahhaahha, what about the solar bear, ...... im sorry
Why not just buy a cooler and put ice in it WOW
For water in chamber to evaporate, in this case, it has to be warmed up. Since the water is warmed up the pipe with water, which is submerged in water, will warm up too. Doesn't make any sense. In order it to work:1. the water and pipe have to be hidden from sun heat 2. the pipe with water has to be constantly wet but not submerged in to water 3. there has to be access to preferably dry air, so that water can evaporate taking away the heat. Probably this is what meant but then the video is completely misleading.
+HomoInsanus Hi there...I'm trying to make this as a project....Do you think it'll work? please share your opinion I'd really appreciate
thank you
+arshad ayub Yes it will work. But I can not say how efficient it will be. The main idea is to evaporate water without heating it so that water takes away heat energy from your cooling object but not fire.
I would agree, I also feel the claim of making it to 40F with this kind of condenser seems kind of far fetched to me, unless you live in a reasonably cool climate all year round.
HomoInsanus evaporation means the more energetic water molecules leave, the coldest ones stay, so temperature drops. Evaporation in this case is helped by the fan, so the water isnt hot it’s cooler than it would be if there was no fan; this does mean that the water evaporates fast so you’d need to refill the thing every now and then
@@TheLuismaBeaTle Ok ! Isn' it possible then to recondensate the water so it comes back into the vessen and dosn't need to be refilled ?
"No electricity" + "Solar powered fan" = wait a minute...
Ares Cet Thats Thats not eletricity its fucking Energy coming from the Solar panel
Ichiban You know Solar panels produce electricity right, what did you think they do?
"200 volts coming from a solar panel"
where did you find such a solar panel?
@@Aleks6010 A lot of them.
@@Aleks6010 Watts the problem here?
One way wind without exhaust shouldn't work. The air needs to escape from the freezer too...
Immortal Jelly when you open the door, if you place an exhaust you risk elevating the fridges temperature
says no electricity then goes on to explain solar panel 😂
stephen styron electricity comes from burning coal and other non renewable, polluting sources. Usually solar panels use a semi conductive material and photovoltaic cells which is then converted into energy.
I mean im assuming thats a joke since photo voltaic cells create electricity from solar power....
stephen styron
electricity to power a fan
I know the setup does use electricity but it’s marginally less than it would traditionally be
@@TheLuismaBeaTle The title of the video says "Without Electricity".
That's incredible, well done to the guys, there are numerous applications for this in Africa, Also if this compartment is sizeable then similar concept can be used to keep off grid batteries cool, as heat has significant impact on battery life. It would definately find place in our village electrification projects though solar energy.
Can someone who understood this principle correctly please explain the part where the water evaporates and cools the air in the pipes down? Does the coil have to be submerged all the way? Also have they used any air filters on the inlet side. Is there an air outlet?
+charlly987 #1) Heat from air passing through the copper pipes is transferred to the surrounding cooler water which then evaporates because of the solar-powered fan. This is basically how the principle of 'convection' works. This same principle is the reason why your body cools down when you perspire - your excess body heat is transferred to your sweat which then evaporates from your skin. Another example is the heat sink and fan on top of your CPU - heat channeled from the CPU to your heat sink is dissipated to the surrounding air by the CPU fan.
+charlly987 #2) Having the coils submerge deeper underground is better because the deeper you go (at a certain point), the lower the temperature of the surrounding soil. Hence, more opportunity for warm air inside the coils to transfer heat to the surrounding soil. Also, the lower you go underground, the more stable the temperature of the surrounding soil because it won't be affected by temperature changes caused by seasons/day-night cycles.
This is basically how geothermal heat pumps work.
+charlly987 #3 They need to use air filters and maintain them regularly, otherwise dirt, molds, bacteria and fungi would accumulate inside the pipes.
There has to be an air outlet somewhere. If you check your local supermarket, they have open-space refrigeration for food items such as sodas, cheese, meat products, etc.
don't look at the boiling water on your stove as heat boiling the water, but rather the water is grabbing heat off of your stove beacause its pressure is decreasing, the water boils. temperature is equal to pressure over volume
charlly987 , Evaporation causes cooling for e.g. We sweat which evaporates and cools our body and yes the coil has to be fully submerged in the water
this is great going to send it to my sister who is always inventing something for emergency situations, think she will recreate the for her use. thank you
How is this different than an electric cooler powered by a solar cell? This is already essentially a mass produced produced product.
The fan is Solar powered. Most places have daylight at some point in the day aside from those 24/7' nights in alaska and that wouldnt require refrigeration...
And an icebox with ice which is a very uncommon commodity in say AFRICA or the MIDDLE EAST or any ARID HOT DRY LOCATION in general...soo, this is essentially a modified ice box with refridgeration
Soo it's pretty innovative, except to those without any common sense 😐
So it's innovative for those with common sense?
Evaporative cooling works better in arid climates. All they need is some water to run this fridge. This also isn't an icebox. It's just an insulated container.
The reason 25 to 50% of food goes to waste is we make too much of it, and almost none for ourselves.
So instead of electricity, you need both solar AND wind! Why not just a solar panel or windmill? And how in hell would running it through a greenhouse cool it down? That's how solar water heaters work!
How much is 40f in serious measurement?
That’s incredibly ingenious, so no electricity and no Freon because freon is the toxic thing about refrigeration
I don't see how that is an "evaporative chamber". It looks like an enclosed box. How is a fan going to affect anything inside that box? Even if the fan was inside the box, the heat generated from a transparent box would nullify any cooling gains. Is the refrigeration box vented at all? Do you put water in the "evaporation chamber"? I wish you could provide more information on this.
screw that.
I'm going to make a ac out of this.
LOL
That’s exactly what I want to do ;)
I came here for same reason.
But will it cover the whole room?
I think I prefer the zeer pot which is an African designed ceramic version of the famous Australian coolgardie safe.
What if there's no wind?
Sorry, Kenya.
That’s the funnel for, it captures the smallest draft nd concentrates it
You can use solar chimney
Absorption refrigeration requires less energy then this if utilizing the LP mode
Well, probably won't work. Simply because most of the food that goes to waste probably came from countries that has access to fridge and electricity already...
Einstein-Szilard fridge was the first non-electric fridge.
Do what the pre-industrial people did; turn milk into hard cheese, store soft cheese in tins of salt water, store dried grain, beans, and nuts, roast the meat and smoke/dry it, and preserve raw eggs in lyme solution. You wouldn't have much in the way of fresh fruit and green vegetables, but you'd still eat well.
If or when there is no wind, can a second underground long enough and wide enough pipe be laid to a low point downhill?
I invented this 12 years ago... And I knew about almost 20... No help on getting patented.
That is not practical nor optimal.You can just focus the sunlight and use a ammonia refrigeration system.That will give you lower temps and potentially greater cooling capacity
Exactly. I think so too. Truth is Their solution is unnecessarily complex and not so ingenious. A simple solution that is practical would be impressive. Not this
Wondering why I can’t find a video of this working.
It's already a thing it's called an absorption refrigerator they've had it since the early 1900s
Come yo canada, it's a non-electric freezer for 6 months every year!
And so whar are your low tech low input source of heat ?
I don't think this is how thermodynamics and...most of all... pressure work
Thunderfoot, i shall summon you
Wouldn't it only work if the wind is blowing though?
It could work with an solar extractive chemney too.. ; )
solar *powered* fan.
yeah then its still using electricity.
@Bob Bobbington it's powered by the sun, doesn't matter what it is powered by, if it is powered at all it uses electricity.
@@ChristopherGray00 you didn’t understand, it uses the suns radiation to evaporate water in a chamber
But it's not connected to a grid
"Fridge without electricity" ..........
Powered by sunlight
Hope those kids will make some some
Concept is flawed. For one no air will flow into the pipes at all to begin with. It's like blowing through a pinched straw. The cooler box is a closed system. In order for air to flow through the pipes it would have to have a open end and not a closed end(closed box). There for no air will flow through pipes naturally. Even if forced by a fan it will still not flow into the box. You would need to have another coil in the cooler box and exit outside the box. That way no air will contaminate the food as well or humidity, insects etc. But the evaporation process seems flawed as well. As water is heated and evaporates it does absorb heat, but the water that hasn't evaporated is far higher then 40F and the chance of it ever cooling a fridge down to 40F is far fetched unless in a cool climate, but then you could just leave a box outside and don't need this idea of a invention.
Sounds like it uses the solar chimney effect.
Refrigeration is a first world need. Third world needs to be taught the old way of preserving food. Salting (curing), smoking, and fermenting.
40 degrees? Thats not cold. You can fry an egg on the street with that
that's fahrenheit. it's 5 degrees in celsius.
Who will fix the solar power panel and fan? Where does the condensate go from the incoming warm air that is cooled?
Seriously?... You're still using Fahrenheit? Get with it, *Tech Insider.* Time to catch up with the rest of the world.
JanetFunkYeah I'm sorry this offends you. Please apologize to your family for all the trauma it must have caused them. We have already selected our human sacrifice. He will be committing sepaku at sunrise. I hope this atones for our transgression.
Lol! You looked at my comment and hyperbole it into that? That's hilarious.
Wow I didn't know that SOLAR PANELS didn't use electricity!!!
Right, they use sun
"Requires no electricity"... A few moments later, "... a solar powered fan...". *sigh*
But what's the starting temp? Are we talking 60s, 70s, 80s, 90s, 100s, 110s? By how much did the temp drop? Are we talking
If you need a refrigerator that works off grid get an absorption refrigerator it uses a little bit of 12V and gets ice cold down to like 10°
40 Degrees Fahrenheit = 4.4444 Degrees Celsius, pretty cool!
How the inner air escapes out from the chamber???
What about the airborne pathogens?
Cools to 40 degrees wtf how is that cold... I'm not American use celsius.
im pretty sure this is an american youtube channel so they put it in the temperature form that they use. and 40 degrees f is cold enough to keep vegetables, fruit, milk, and meats from spoiling soooooooooooooooooooooooooooo
Murky Waters 4°C friend c:
you can still convert the temperature measuring units tho
Its actually 40 degree fahrenheit
below 40°
Nice project ! Lowtech is future ! For cooling you can use also air vortex, solar chimney, and injecter, and catchning the cold from clearsky nights
so a fridge that only works when there is wind? sounds great! If you were to go through the trouble of installing solar+inverters+battery banks id say use that to power a regular fridge... i dunno something about a fridge that stops cooling when the wind stops seems like a bad idea.
Solar chemney to extract the air from the insulated box could work too..
This riddle is easy! The answer is obviously and ice chest!
Can someone please tell me the cost of this project . I want to know the price of each and every item of it please
hi hood day... can some body answer me.. at what depth is the soil will be cooled to make the air cooler.
and can u explain in with some heat transfer?? thank you.. would love to try this idea..
Ya well, I'd like for someone to explain the coil and the box thingy. I got lost there. I say if a fan is used there, then the air is coming from somewhere. And if air is coming from the outside well then it would just turn the air in the tube back to hot again. If there is a fan there the air HAS to be coming from somewhere...unless the box is air tight. Is the box air tight? If it is air tight then how does it work????
how about polluted areas?
solar panels are expensive and fairly high tech, if there is no wind you are screwed, no sun you are screwed at least every night and cloudy day.
Played the smart move by going along the energy gradient.
Here's a good project: You remem how when (in FL) you go outside in summer for just 5 min and come back in with a wet shirt in summer, we always thought that was sweat (well it is partly) but I'm thinking that the dew point on the very very thinnest upper surface of the shirt falls low enough to condense water (realize we get 95 F and 99% Humidity many times); i measured temp on damp napkin with infrared therm once and the temp on surface (in the shade) fell to 70F well below the dewpoint (remem at 100% humidity the temp IS the dewpoint); am i right ? I'd really like to know for sure, if most of the wetness is condensation or is it all sweat? if its dew, then I think a way can be devised to keep the dew from forming ? On their cooling system, neat if it works, like to see a video. I think the evap box would have to be in the shade otherwise it would be like a greenhouse picking up sun heat to create more heat than the evap cooling would provide (ie why doesn't ocean in summer sun go down to 40F ? there's plenty of wind out on the ocean ); the geo thermal would work to get it down to something like 56-59F if enough coils were deep enough (one guy in nebraska grows oranges in winter using an olympic size swimming pool of air ducts to feed a greenhouse in winters; he uses cheap fans one at entrance of ductwork at one end of greenhouse and one at outlet at other end of Greenhouse; so it keeps the whole greenhouse above freezing, then in daytime the sun contributes to raise it up to perhaps 65-70F , NEAT !
That kid wearing an Ethereum shirt at 1:32? This was uploaded in 2015. I'll bet he's rich now.
So already it's a false claim. Solar electric power......... it's electricity.
Could this just be replaced with windpower? I mean, is a fan, makes better sense to be powered by a fan.
Hi, great idea, but i want also ask you for the link of the page you put in your video at 1:17 under name (Global design challenge) because it's looks like the link you used in the description box is not the same one in the video.. thanks
How about nights? Evaporation won't happen , cooling won't happen, temp drops to ? What do you mean by a solar powered fan that evaporates water.
Icyball was invented in early 1900s
So that was first refrigerator to run without electricity that I know of
He absorption refrigerator was already a thing in the early 1900s which uses heat to cool
So what happens to the food on a day thats not windy?
What if the wind isn't blowing?
Excellent project for future
Why does it need two stages, why can't you just use one stage and make it bigger (like a bigger coil underground) or a bigger evaporative cooling unit? I guess the size of each stage can be varied depending on the conditions? Do you think it can be simplified so that it can be made on site, or mass produced? Can you create a version of the evaporator cooler for human beings for a personal cooler (like they wear a cape or bunny ears) that is filled with water that uses evaporative cooling to cool people down.
In South Africa we have paraffin fridges for many years works with small pilot flame, it's not new its over old 20 old years old technology
So... fridge for the everyone, but the temperature still in Fahrenheit ?
😂 this is how a kid starts to become an inventor, keep learning kid
below 40°C is still hot lmao. this is called a microwave haha
40°F = 4,444444444444444444444444444444444444444444444444444444444444444444 °C
it needs a security system around it tho.
You mean a lock?
Helpful for survival and it is supet cheap. Long time ago the temple use this tecnology.
Would not work in hot and humid areas. Unless?
How is that clear box gonna cool anything? Its a little greenhouse, it'll be about 120 in there
Can you get to negative Celsius and ice?
This is great and all, but the title "Fridge without electricity" is misleading.
Johnny Boy Yes I can read. That's how I know it says "Fridge without electricity."
yes but it is self sustaining electricity which is different from the mains electricity you need for conventional refrigeration. Also, the fan is a small part of the process. The title says no electricity because it is talking about the amount of electricity you would get from a power outlet
Eee... does the prototype actually work? If you put a bucket of water out in the sun at 20C the water will not in fact cool down to 4C even in very dry climate. If you heat water to evaporate it you are still heating water so no cooling.
Putting heat sink underground kind of works, but you will only approach annual average temperature as you go deeper, so in hot areas no dice I'm afraid.
Does it work at night?
"A solar powered fan that evaporates water" :thonk:
WSKE-UP
If you're gonna use solar powered fan you might as well use solar powered fridge, way easier and probably cheaper too.
Ummm why all the extra gadgets, when you can just dig below the frost line in most areas build a box, Drain and vent it as a root cellar?
I’ve been seeing products lately like copper cup, copper pan, even copper gloves... how about the copper fridge?
You guys are so smart thank you so very much keep making awsome videos
Tbh, I think it would be more feasible and plain logical to use a solar panel and a peltier chip, the most common are 12v 6/10 amp, and you can get a reasonable 40f and lower sometimes,
its awesome.......great minds........appreciate your hardwork.......
Don't really understand what happens in the clear box.
How can I connect with the inventors, please
what about night?
There won't be as much wind, but there won't be sun heating the soil, so the ground surrounding the food chamber will cool off. Also, there is probably infrared reflecting material to keep the heat from getting in, so the food would probably be pretty safe during the night.
fan doesn't use that much power, so a battery to store power to power the fan can be added
I would like to get more information on this system.
So what happens when the earth around the underground pipes absorb the heat from the air being pushed through the coils? That's right the earth will heat up and eventually you will no longer get heat transfer and this whole thing falls apart. If it wasn't for the part where the coil goes up into the water tank you would get cool air out the other end for an amount of time and then the air would return to normal air temperature. Go look up Thunderfoot and the waterseer. the only way I could see this possibly working is if there was a way to dissipate the heat out of the ground back into the atmosphere at night.
Evaporative cooling is a thing but the way it's shown in the video is not how it works. You need dry air and shade.
XD XD XD good luck heating tons of underground soil with air. Thunderfoot didnt teach you about thermal mass, or specific heat?
@@KrakenIsMahB lol. The air will heat up the soil. It will take a long time but it will heat up. Just because 2 bodies have different thermal masses doesn't mean heat won't move from the lower mass to the higher mass. Take a block of steel and blow hot air over it. What happens to the block of steel? It warms up until it has the same temperature as the air then stops heating.
Take a closer look at the animated illustration and see that the building construction does not match the two models he uses to explain it to make his point. is very interested in why that should be so! ¡
Below 40°? Doesn't sound too cold to me
so what happens when its cloudy, at night? or if theres no wind? "unreliable power" so unreliable refrigeration is a solution?
people used ice boxes for a reason.
There won't be as much wind, but there won't be sun heating the soil, so the ground surrounding the food chamber will cool off. Also, there is probably infrared reflecting material to keep the heat from getting in, so the food would probably be pretty safe during the night.
Also, it doesn't say "unreliable refrigeration" it says they hope to produce the wind chill for areas with unreliable power. That means the conventional means of electricity is unavailable or *unreliable*
So it's been 2 years. Any news? Or it's just another dead "theory" after got "prize money"?
Air is cooled underground, so what is the need of evaporation chamber ??