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benpope · 11-08-10, 10:29 AM

From builditsolar.com:
Cold weather passive assist refrigerator - It uses a heat pipe as a "one way valve" to move heat out of the fridge when the temperature outside is cooler than inside the box.
Hot water cold beer - Uses an AC compressor to move heat from a beer keg to a hot water tank.
Ice box - a new take on the old-school ice box, it has a heat pipe similar to above, but uses the heat draw to freeze 300 gallons of ice. He says it takes 10 days of temperatures below 20 F to freeze the water. Then he shuts off the heat pipe so that all of his food doesn't freeze.
Edit: More on heat pipes

11-08-10, 10:29 AM	#9
benpope Helper EcoRenovator Join Date: Jan 2010 Location: Little Rock, AR Posts: 95 Thanks: 16 Thanked 13 Times in 12 Posts	From builditsolar.com: Cold weather passive assist refrigerator - It uses a heat pipe as a "one way valve" to move heat out of the fridge when the temperature outside is cooler than inside the box. Hot water cold beer - Uses an AC compressor to move heat from a beer keg to a hot water tank. Ice box - a new take on the old-school ice box, it has a heat pipe similar to above, but uses the heat draw to freeze 300 gallons of ice. He says it takes 10 days of temperatures below 20 F to freeze the water. Then he shuts off the heat pipe so that all of his food doesn't freeze. Edit: More on heat pipes Last edited by benpope; 11-08-10 at 10:36 AM..