SUGG: Cooling systems : LUSENET : Junkyard Wars : One Thread

Picture Cathy saying: "The challenge this week is to build a air cooling system--an air conditioner bodged together out of nothing but scrap. We'll test their cooling power in the environmental lab at to find our comfortably-cool winners."

lots of sitting around decoratively fanning and sweating demonstrate what goes on in those nifty environmental labs where they can create a huge range of temperatures Barcelona Olympics had outdoor cooling using airborne mist

-- Linda Carson (, January 14, 2001


Freon Bad! Ozone Good! It'd require vacuum pumps and both teams would use same approach. no drama no tension gotta have diferent systems.

-- Stephen A. Binion (, January 15, 2001.

>>no drama no tension gotta have different systems There exist other means of cooling other than compression based refrigeration.

Gas/electric refrigerators operate on the absorption principle. They generally use ammonia as the working refrigerant. They can work without a compressor. They generally use heat to cause the flow of refrigerant through the system. Evaporative Cooling Many primitive cultures and some RVís use evaporation to cool things. Fans >>Freon Bad! Ozone Good! Maybe true, probably true, but other gases can be used (anyone???) >>It'd require vacuum pumps and both teams ... Technically, it requires a compressor. The working refrigerant is compressed, Cooled a bit Turns to a liquid under the high pressure Sent through an expansion valve. POOF! instant cold

-- David Gwaltney (, January 18, 2001.

Maybe creating ice cubes would be more visable and interesting.......

-- Johnathon Willhite (, January 19, 2001.

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