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Politics : Rat's Nest - Chronicles of Collapse -- Ignore unavailable to you. Want to Upgrade?

To: Travis_Bickle who wrote (11079)	8/9/2010 10:23:43 AM
From: Wharf Rat	Respond to of 24231

Inject some tequila and you'll have a margarita.

To: Travis_Bickle who wrote (11079)	8/9/2010 10:38:09 AM
From: Wharf Rat	Read Replies (1) \| Respond to of 24231

Looks like it won't work... Drum comment Black_Dog on August 9, 2010 - 9:01am As usual, the headline writer for this story doesn't understand the physics of a ground source heat pump. The earth surrounding the underground pipes acts like a giant thermal storage mass. The system heats the ground during Summer, then cools it in Winter. As one digs or drills deeper into the Earth, the temperature does rise, but close to the surface, things are different. There isn't a "constant" temperature "source" below ground, only an average temperature which is the result of years of variations at the surface. In fact, the temperature profile with depth as measured in a bore hole has been used to reconstruct the long term variations in surface temperature over thousands of years. A ground source heat pump works best in an area where there is a need for both heating and cooling. Otherwise, the underground temperature would not recover from one year to the next. In a location where only heating is required, the result would be a mass of very cold earth surrounding the pipes, which would eventually reduce the efficiency of the heat pump. That fact is the reason that a large area of trenching and piping is usually needed, to minimize the possibility of frozen ground... E. Swanson