Posted by teddy52food on June 23, 2011 at 06:34:41 from (68.169.216.43):
Last week we toured through Mi. We went to the Quincy copper mine in the UP to see the biggest steam engine in the world. Steam was fed to the small cylinder(32 inch) then the exaust powered a bigger cylinder (60 inch) then the exaust was pumped by another smaller engine to a condenser and cooling pond. I questioned the tour guide as to why they cooled the water before returning it to the boiler. She said there was a reason but couldn't explain it. I would think it would be more efficient to use the water hot rather than cool it down. Anyone know the reasoning behind this?
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Today's Featured Article - A City Guy's First Tractor - by Fred Hambrecht. After living in apartments in Atlanta for more years than I care to remember, the wife and I decided to move to the country. Humming "Green Acres is the place for me..." we purchased a 29 acre tract about 60 miles south of Atlanta. Next came the house, I could talk about that ordeal for another two weeks... But, I want to talk about my tractor! We didn't even own a lawnmower, and all of a sudden we had enough grass to feed all the starving children of the bovine world. Naturally, I talked
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