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Re: geothermal heating/radiant flooring/domestic hot water
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Posted by Robert Gammon on Sunday, 4 May 2008, at 8:36 a.m.,
in response to Re: geothermal heating/radiant flooring/domestic hot water, posted by Phil
Phil,
Your narrative here on this web site, echoed here in this forum by others, clearly states that you were considering a water chilled coil for cooling of this house, but your HVAC contractor persuaded you to use a W-A gshp for improved performance.
You did not say that you were going to use an evaporative chiller, only that you wanted a water cooled coil in the airstream flowing thru your house. If I said or inferred that you were considering an evaporative chiller, I WAS WRONG.
You may have been leaning in that direction already, so their suggestion to use a W-A gshp tipped you over to acceptance of that view. I am not trying to say things that you did not say.
Ok, your accusation that I read something and repeat it as gospel still stands, and has more than a grain of truth to it.
I was reading more than one web site that discussed the use of water chilled floors as a method of cooling a home. Some people out there clearly believe that this method works. The idea that a gshp could heat/cool two separate tanks of hot or cold water for use in various parts of the building is one way to do this (for structures that need both heating and cooling at the same time).
In Southeastern Texas, the only application of that concept that I can see is the use of a fireplace. Emotionally, some people want to see flames in a fireplace in the period December thru March. However, use of the fireplace may heat up the room that it is in to uncomfortable levels, requiring AC for THAT room. The rest of the house may get cool enough that it needs heat. So the building needs both AC and Heat at the same time. This thermal characteristic will be met in structures of all sizes, from 900 sq ft houses, to 15,000 sq ft mansions.
My home is not likely to use radiant cooling. My home is not likely to use radiant heating.
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