Re: BREAKTHROUGH IN HOT DRY ROCK GEOTHERMAL ENERGY
- From: "bsr3997@xxxxxxxxxxx" <bsr3997@xxxxxxxxxxx>
- Date: 6 Feb 2007 21:36:01 -0800
On Feb 6, 5:05 pm, j...@xxxxxxxxxxxxxxxxxxxx wrote:
In sci.physics habshi <hi@anony> wrote:
The soil fifty feet down is at a constant over 55degrees and
so when the outside air is 0 degrees there is a huge heat gradient.
That is 55 Fahrenheit, idiot.
Few place where people live get to 0 Fahrenheit except in the middle of
the winter.
The air temp outside my window is 3 degrees F right now. I am sure it
will get down below zero before morning. When using a heat pump it is
far better to use a 55 degree ground source than a - 5 degree air
source.
If you want to heat a house in the winter, you are about 20 degrees
short of having anything usefull.
55 degrees Fahrenheit is a trivial heat gradient.
55 degrees Fahrenheit is a good temperature to store root vegetables.
--
Jim Pennino
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