This is a great question … there ’s a lot to love about free strain conditioning !
It surely would be an easy system to make . All you need is a big insulated container ( believably in the form of a hole in the ground ) with some coiled tubes at the bottom . You would run a chill weewee circuit from the container to a radiator inside the air conditioner ( seeHow Air Conditioners Workfor details ) . You would demand a minor pump to pump the water in the chilled weewee loop , but that ’s it .
So let ’s make a duad of assumptions :
To chill the house , you therefore need :
Multiplying by our 50 percent efficiency rating , let ’s call it 130 million BTU .
If you have a gramme of water ice at 32 degree Fahrenheit ( 0 degree Celsius ) , it will absorb 80caloriesof vitality converting from methamphetamine hydrochloride to swimming water . There are 252 gram calorie in a BTU . So we involve 3.15 Gram of weewee to absorb 1 BTU of heating system . The supposition here is that we are going to bank on the phase change from ice to water to power the air conditioner . Once all the ice melts , the pee will warm up up quickly .
So we need :
That ’s about410,000 liters of ice , or 410,000 kilograms ( 902,000 pounds ) of crank that you must store to cool your house all summer . That ’s a third power measuring 740 centimeters ( 24.26 feet ) on a side . Very roughly speaking , you would have to fag a mess as full-grown as your house and isolate it well , and then in the winter you would have to shovel it full of nearly a million pound of ice . But if you do that , you may cool your planetary house for free ! ( The time value of the equivalent electricity to cool the sign , at 7.5 cent per kW - hour , would be about $ 1,500 . )
