I saw this on youtube and thought I'd give it a try. I have two small window units that cool this house down fine but the new cabin will not have electricity and wanted to experiment with this just for fun. This will not remove any humidity and may add to it a bit because the bottles sweat.
I froze six 1/2 gallon bottles and put in a camping cooler, the separating foam is an inch off the bottom to force the air flow through the bottles from the bottom up.
Covered with a piece of foam insulation and have a computer fan blowing down and a hole for the cold air to blow up and out of, there is a temperature probe in it as shown.
When first started in a 82F bedroom at 11am the exit air was 62F and over 4 hours rose to 72F when the ice was all melted. It only cooled the 13'x12' room one degree but it also was removing any heat from me and the computer - so it did not go up even while the day got warmer and me and the computer created 500 btus of heat per hour.
I calculated that the 25 pounds of ice absorbed 5000 btus of heat over the 4 hours, my 5000 btu window unit will get this room to 60F in that time but also took 20,000 btus to do it. That is not the point of the experiment it was to see if I could cool a room half the size on only extremely hot days in my new cabin which will not have AC as planned because of power demands.
The window unit draws 600 watts and would put a deep draw on a solar panel and batteries. I froze the 6 water bottles plus 6 more in less than 10 hours at a hourly draw of 94 watts - I started with a hot empty freezer so it will probably be less than that.
I froze six 1/2 gallon bottles and put in a camping cooler, the separating foam is an inch off the bottom to force the air flow through the bottles from the bottom up.
Covered with a piece of foam insulation and have a computer fan blowing down and a hole for the cold air to blow up and out of, there is a temperature probe in it as shown.
When first started in a 82F bedroom at 11am the exit air was 62F and over 4 hours rose to 72F when the ice was all melted. It only cooled the 13'x12' room one degree but it also was removing any heat from me and the computer - so it did not go up even while the day got warmer and me and the computer created 500 btus of heat per hour.
I calculated that the 25 pounds of ice absorbed 5000 btus of heat over the 4 hours, my 5000 btu window unit will get this room to 60F in that time but also took 20,000 btus to do it. That is not the point of the experiment it was to see if I could cool a room half the size on only extremely hot days in my new cabin which will not have AC as planned because of power demands.
The window unit draws 600 watts and would put a deep draw on a solar panel and batteries. I froze the 6 water bottles plus 6 more in less than 10 hours at a hourly draw of 94 watts - I started with a hot empty freezer so it will probably be less than that.