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Re: geothermal heating/radiant flooring/domestic hot water
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Posted by Robert Gammon on Monday, 5 May 2008, at 8:58 a.m.,
in response to Re: geothermal heating/radiant flooring/domestic hot water, posted by Phil
Yes, I WAS WRONG TO SAY THAT YOU WANTED TO USE EVAPORATIVE COOLING.
In my mind, the distinction between evaporative cooling (and in my mind, that is OUTSIDE to cool the HOT side of the heat pump, although desert S/W folks sometimes use it directly as the added humidity is welcome) and chilled water coils is poor. I AM NOT FAMILIAR WITH THE USE OF FAN COILS FOR EITHER HEATING OR AC. It is a term that I have heard, but have not seen any good explanations of why it gets used and how it works.
I come from over 50 years of AC and furnaces that burn either natural gas or fuel oil to heat the house. When I think of cooling, it is ingrained to think of a coil that sits in the airstream of the house, with a heat engine that transfers internal heat outside.
Your thought to reverse the heat pump to produce cool water to the air handler's coil was I THINK the proposal you made to the gshp contractor. The contractor's apparent response was that the performance of such a coil is poor in Maryland, and the cooler air plus shorter run times from a w-a heat pump would make your family more comfortable and
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An exercise in Energy Smart, Not So Big living. www.OurCoolHouse.com - Ideas @OurCoolHouse.com
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This site is all about building a cool, energy efficient house, that makes maximum use of earth sheltered design, passive solar heating and cooling, geothermal exchange energy management, and right sizing of the house for it's designated use. The home's placement is on a south-facing hillside in Deep Creek Lake, Maryland. This site describes the design process, the technologies used and the expected results. We also have a comprehensive Links Page for anyone who is also interested in designing a similar project.