SUGG: Cooling systemsgreenspun.com : 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 (firstname.lastname@example.org), 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 (Stephenbinion@hotmail.com), 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 (email@example.com), January 18, 2001.
Maybe creating ice cubes would be more visable and interesting.......
-- Johnathon Willhite (firstname.lastname@example.org), January 19, 2001.