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1. Zeer Pot-in-pot refrigerator higher humidity results Flower Pot Fridge

Zeer Pot-in-pot refrigerator higher humidity results Flower Pot Fridge

Zeer Pot-in-pot refrigerator higher humidity results This is a design dating back to as early as 2500 B.C. and the idea was somewhat abandoned with the ...

User Comments

a1930ford commented on 14 Dec 2015

A suggestion or two to try:Put your produce into a baggie so contamination from any chemicals is not an issue/problem. This includes salt or anything that can leech into the inside of the clay pots. Also, try adding a cup of rubbing alcohol into your water mix poured into the sand. This should bring the water temp down a bit more for additional temp drop. Try this out and see if it does make any difference, as alcohol is cheap. Get a cheap, small solar powered fan to push a constant breeze over your wet rag. Mist the rag with alcohol and water or soak it in such a mix. Check to see if their is a product that actually is a better transfer source than sand for cooling purposes. Find a lid at a thrift store or such to cover your inner pot when the rag is not in place. They make clay terra cotta drip pans or plates which can be used for this lid purpose, too. Flip one over and use as a lid if you can find one that fits the inner pot. Not sure if one of those ice bags that are used to keep coolers cool could be put inside the inner pot to help keep the temps there cooler initially, but it could be something to consider. These are just my thoughts and I have not made such a cooler at this point, but sure plan to try in the near future. I learn a lot from others and even sometimes learn more from mistakes than first time successes. Thanks for sharing your video.

Mindmilling commented on 24 Jul 2015

One possible error in your comments is that the interior pot can be glazed if you choose. Actually the water ALSO breaths into the interior of the fridge and evaporates from inside the fridge. I admit it's not that important, but it should increase the cold a bit and is why it is good to have a wood basket or something to keep the interior walls clear. In addition to your elevating comment. It is good if the pots are round or spherical to allow the wind to wrap around and evaporate as opposed to having a square zeer fridge.

tyreza79 commented on 06 Oct 2011

ZEER is an arabic word,& its not like how we do it here,usually its just a deep thick earthy pot,coverd tightly with a thick sheep wool tissue,wool already has the ability to make things hot in the winter & cool in the summer; sheeps take profite from that, and yes before we use it we dip it in water,& we cover the zeer with, and it really makes it cool;& more: the water in the earthy pot becomes a living water, not like the ones in bottle/taps are dead with no energy,earth give energy to water

47f0 commented on 03 Oct 2011

That sucker flies over me all the time - I think it's based out of the civil airport on 50. The cure for the blimp is a parabolic with a really long focus ;-) . I've also heard of a pit refrigerator that might not be so affected by humidity. The concept is a deep insulated pit, exposed to the night sky, and covered with an insulating lid during the day. Apparently, there's enough infrared radiation to the night sky to cool it significantly - don't know how well it would work on cloudy nights.

GREENPOWERSCIENCE commented on 07 Oct 2011

One other thing, others have tested their pot inside their house with the AC on, which lowers humidity dramatically. This may sound free but that moisture is removed from your AC and causes it to work harder roughly equal to the cooling. Furthermore in times of need, you will not have an AC running ex. after a hurricane. You will have near 90% humidity. I worry that many are considering this as a backup plan. There are MUCH better options. Cooling small spaces requires very little energy.

Bill Wheaton commented on 03 Oct 2011

Here is a tip for you. Stack them. The one on top of the other will provide insulation to the one below, keeping in its coolness. Don't use a towel that drapes over the sand. The sand should be exposed to the air, not to the towel. you will get a lot more evaporation and cooling effect that way. Prop the bottom one up on a little stand so that air can get under it. Make sure it is in the shade, but in a breezy place. Do this and I bet you get better than a 6 degree temp drop.

duckforceone commented on 19 May 2012

One thing i learned many years ago, if you are working outside in the sun and want a cold drink. This is great for the beach. If you stay at the beach for a long day, put a 2 liter bottle of drink in the freezer, and take it out before it bursts. 2-3 hours is usually good depending on freezer. Then you wrap it in a wet towell, and let it lie in the sun, rewetting the towel when it dries out. The effect will keep your drink cold or make it cold if it was natural temperature.

TheElectricRider commented on 23 Oct 2012

O.k. Dan, you need to find the Holy Grail for me - I know you can do it. I'm in South Louisiana, moving off grid soon and need air conditioning. (you know, high humidity) I had planned to hook up a small window unit to the solar system with an inverter but that will still suck tons of power out of my solar system. I'd rather have the power for the laptops and refrigerator LOL Please discover a way I can get good DIY cooling in high humidity - the GreenPowerScience way.

Petawatt commented on 04 Oct 2011

@GREENPOWERSCIENCE lower temperatures = HIGHER humidity. Hotter air can dissolve more water vapor. When it cools down, the relative humidity goes up. When it reaches 100% humidity you will see dew (or frost) form. This is the point where the air is so saturated with water that it condenses out on the grass or other solid surfaces. I'm surprised you would even try to make this in Florida, though you may get some luck by blowing an electric fan on it all day.

bodryn commented on 09 Oct 2011

Years ago, when I worked for a farmer, he provided me a "water bag", where some water would seep through to the outside, and evaporative cooling would keep it noticeably cooler. I found the water acceptably cool, and I could just hang it on a hook on the tractor. In one of Tristan Jones' books about sea voyages, he mentioned his experiments with a cooler made with the help of hay. He said this was from an old method of keeping things cool.

GREENPOWERSCIENCE commented on 05 Oct 2011

@MrJerryanderson 33 degree drop in Florida in the summer? Not likely. I did this video because there are a lot of videos out there that over express the results, one states near freezing in 92 f ambient temps. Best case scenario is 30 f in 25% RH or less. They will not work in most places in North America in the summer because of humidity. I posted a chart of averages in the more info area below.

GREENPOWERSCIENCE commented on 04 Dec 2011

@kevbow0137 Assuming your generator is is an AC alternator, the best way is to use a bridge rectifier and go to DC (if DC generator no need) then store the power in a battery and go to an inverter. Unless you have a constant source of power like a gasoline diesel gen. you will have power drops that can cause high and low voltage damaging stuff. watch?v=GDOuutNWlGI watch?v=GdBsANKXaG8

callmeshane303 commented on 05 Oct 2011

Yeah good one.... depending upon the climate - being temperature AND humidity - they can either COOL and humidify the food - so it does last longer, either by a whole heap or just extending it's life by a day or two... for bacteria etc., 10 degrees Centigrade is better for keeping food than 20*C, and 20 is better than 30 or 40 or 45 or 50*C

Link Knight commented on 08 Feb 2013

not so sure about that. here in Oz we have a couple towns in the desert who generally build underground. the above ground temp can get to 50C and it is a constant 25C underground nearly all year round. it seems its almost certain to be colder underground. places colder above ground get about zeer pot temperatures underground.

carambatsr commented on 04 Oct 2011

A breeze or a fan blowing on it would be certain to lower the temperature more by increasing the evaporation. Using a fan might be an interesting experiment. Maybe a peltier device would produce a voltage due to the difference in temp enough to run a small fan. Obviously the guys on the blimp were scoping out Denise.

GREENPOWERSCIENCE commented on 28 Oct 2011

@DasBus2002 They might have wet the outer shell but New Orleans has higher humidity so evaporative water cooling does not work well most of the time. Maybe a winter thing? Up north my great grandparents had a 4ft deep cellar that they stored food in until about April. During the summer the veggies were stored there.

Artididitagain commented on 04 Jul 2014

They give good instructions on this and sea water will work but it evaporates at a higher temperature because of the sodium but the you can get more arir flow to compinsate like in Florida there are some dryer southerly winds going toward the oceans if you could take advantage of these it will work well

GREENPOWERSCIENCE commented on 04 Oct 2011

Placing the pot in the sun increases evaporations BUT also increases the outside temperature. Because the water conducts temperatures, this defeats the purpose, like placing in an oven. The maximum temperature difference drop is est to be 37f in very low 15% Ambient Humidity. Wind increases the process.

bodryn commented on 09 Oct 2011

I have also read where people say you can keep things cool for a long time by creating super insulation: you layer newspaper and aluminum foil repeatedly up to maybe 2 inches thick. I have never tried this, but they claimed the temperature control was far better than any common refrigerator.

JULYINJULY commented on 07 Oct 2011

this video has the only real results on youtube. why are people faking results? Mohammed Bah Abba made 5000 for the Niger region with 23% humidity. They are getting 20-30 degree drops in that hyper dry climate. Yet people in the USA are claiming super results. BULL shirt/.

Link Knight commented on 08 Feb 2013

PM me if he finds anything. i have near zero humidity, but the old evap cooler doesn't quite cut it here. BTW, inverters don't like it too much if the compressor in an A/C starts at top dead center. tends to trip the inverter out so I'm told in an electronics catalog.

John Conor commented on 04 Oct 2011

Hi i'm new viewers of your channel, found your channel on research into fiber optics ... i just have one suggestion, At 3:26 She says the temperature is 10 degrees colder, it would be awesome if you had a Laser Temp Reader and showed the viewers the difference :)

redoorn commented on 09 Oct 2011

i know a fellow that makes excelsior, wood wool, and ships ship loads to ahab the arab((folks in the very dry middle east) i'm trying to be funny and not a dick, asshole. so shut your yap.) for swamp coolers. same principle and fantastically effective.

Mo H commented on 31 Jul 2013

Hi Dan, Humidity is water droplets in air. How about if we Enclose this entire pot in glass structure and put a small computer fan to circulate air.. Almost like a big glass pipe open on both ends .I bet it will cool like 30 degrees F or more.

Peter Schmidt commented on 03 Oct 2011

i'm sure the temperature will lower another few degrees if you put a ceramic cover over the SMALLER pot. a lot of heat enters (or coldness escapes) when you leave it pretty much exposed by a cloth. your pots were pretty small too.

manilaenglish commented on 03 Oct 2011

Cool refrigerator. Quick question. Doesn't concrete hold heat? So wouldn't it make more sense to use an outdoor thermometer to get the air temperature then compare that to the temperature inside the zeer pot?

Lars Woltemade commented on 04 Oct 2011

Thx for that cool idea. I'll try this next summer. Hopefully it will get hot and not rainy like this year. Btw. where you able to get rid of the Hindenburg? You could have used your fresnel lens. ;-)

Steven Watson commented on 03 Oct 2011

Very informative Video I have always wanted to make on of these and try it out. But since this works on evaporation would it work better on a hot day do you think? Anyways thanks again. Steve

Green Silver commented on 03 Oct 2011

@GREENPOWERSCIENCE I used to have one made from marble, it had an indent on the top to put water in. It would make whatever it was standing on damp but it did do a pretty good job.

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