Peltier Air Conditioner - How to make Peltier Air Conditioner using Water Cooled Hot Side System

This is a new and efficient method of making peltier air conditioner by using water cooled hot side system. Here tec 12715 peltier module is used.
Water is used to cool down the hot side of peltier module. Inside bucket a heat sink is attached to the hot side of peltier module and its cools down by using water. A top mounted fan is used to cool down water inside bucket.

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[thomasbarlow]

I used one of these things to make my dogs water bowl always have cold water. I live in an RV and cold water is so nice in this Florida heat. His bowl has a steady ice cube in the center 24/7 now.

[TurboElectricLtd]

Is it me or is this guy just making an interesting water heater

[xmarksthespot_]

Good idea! most people do not realize the capability of evaporative cooling, which you are clearly using to keep the water at ambient temperatures, The only downside is that it creates humidity in the air and if the air is at high humidity it will heat up a bit, but the upside to a peltier is that you only need a difference in temperature from ambient in order to cool!

[a.w.wijeratne]

This is a good idea to use water to cool down hot side. To have some results, use at least 4 peltier modules, fix a heat sinks on cold side too and let cold air be blown from the heat sink on the cold side towards to room. You must fix the whole assembly on a Window to make sure that hot side is kept outside the room.

[dadtechmech]

In your project which is the hot side of peltier nice tutorial gud day from philippines

[barnzullaRedStar]

The big thing here that people are not thinking about when prototyping or building these little Air conditioners is that they need to get that heat out of the room. That is how your house AC works. It basically pumps the heat to the outside air with refrigerant as the heat conductor. To use Peltier units you would have to figure out how you would get the heat to the outside air. With this water method being used maybe he could have the water pumped to a radiator outside or possibly to a pond big enough to help keep the water in the tank cool enough. I do know that our coal fire power plant here uses a method similar with their ponds to help cool their water that is used. Another idea would be if the water was ran in pipe deep underground to help transfer the heat to that. I'm not sure how well or efficient all these ideas are but it should be considered.

[bobbussinger]

Do you put the hot side facing the water or do you put the cold side to the water ? Thank you

[lubomirbrousek]

This will never work, it will heat up your room instead of cooling it! That's like leaving your fridge door open and thinking it will cool the room

[JulioStunYasuo]

Gracias, lo voy a poner en un Inverter casero, con esto solucionó el sobrecalentamiento de los circuitos

[Mr_Ravee]

You are so talented dude..keep up the good work...subbed👍👍👍🍻

[cprn.]

Somebody correct me if I'm wrong. Assume a 2x2x2 metres room (bit less than 6x6x6 foot), that's 8m^3 or about 9.8kg of air. Assume fans that push 3 m^3 of air / minute (around 100 cubic feet / minute). That's 0.05 m^3/s. Assume we use a *huge* 20x20x10 cm heat sink on the cool side and ignore the hot one. That's 0.004 m^3. This heat sink has about 0.08s to transfer heat before the air exchange around it (simplified). Let's assume a 100W Peltier module and half of it is used for cooling. For one volume of that heat sink with this fans the module can transfer 50W * 0.08s = 4 J = 0.04 kJ of heat. If we were to cool the air by 20 degrees we'd need: air mass * air capacity * temperature delta = 9.8 * 0.7 * 20 = that's 137.20 kJ. Our hypothetical Peltier AC would lower the whole room temperature by 0.005 degrees each 2m40s in conditions of perfect isolation. So about 0.11 degree each hour. It would take it a bit over 9 hours to lower the temperature by one degree. The air blown out of this thing would still be hot as in: no difference to touch. And this guy's unit is way less capable than what we're talking, his isolation is non existent and the temperature measurements he ever shows are of the Peltier module itself, not of the air. It would be actually more effective to cool that room with a bucket of ice.

[Raku]

Thanks for sharing. I like the water cooling part a lot, because it seems less cumbersome than using water cooling tubes and a pump. I gather that you are getting an evaporative cooling effect with the top fan. I would be curious how long it would take to cool a 10x10x7 room on a 100 degree Fahrenheit day. I would also be curious if you started with ice cubes in the water whether this would bring the cold out stronger and quicker and by how much. I would also be curious if you insulated the chamber and had tubes running out of the room from the chamber, whether having the water in the room would cool faster (because of the evaporative principle working for you) or whether having the heated water not transferring to the room but going outside would cool faster. I would guess that a drier room might affect the results (help the evaporative principle).

[Salibs]

Great idea. But on the hot side, once the water gets hot, the cold side would lose its effectiveness too.

[TheMattchooo]

wow, nice video!! imagine using 4 peltier the same way in a bucket 2x bigger with 4 fans intake and exhaust. i think maybe good for a medium room cooler?

[jeevanix]

Heat should be sent out of the room by tubes. Otherwise, room heats up instead of cooling. .

[martincastillo]

The water will get warmer the way he installed the heat sink against the hot side of the peltier. Also you can not cool an entire room with just one peltier element.

[少佐殿下]

NICE ONE
I USE IT TO MY CUMPUTER WAS NICE

[hosamaljundie]

If I use an evaporator and fan behind it ... like the one used in air conditioners ... and pass water chilleded by pletiers inside the evaporator ... where the temperature of this water reaches -20 degrees Celsius after adding an antifreeze to the water ... Will I get enough coolness to cool a room and how many pletiers do I need to do that?

[FALGUNIKH]

If we use as air conditioner, since after some times temperature gets down. Upto what hours we should run this?

[The_Ruffian]

Not too bad of an idea for more direct cooling of the hot side heat sink.

How do you think a mixture of ethylene glycol (automotive coolant) and water would perform versus just water?