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Re: geothermal heating/radiant flooring/domestic hot water

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Posted by Robert Gammon on Wednesday, 30 April 2008, at 2:32 p.m.,
in response to Re: geothermal heating/radiant flooring/domestic hot water, posted by Brad

A geothermal heat pump that has a desuperheater installed by the manufacturer (its an option installed at the factory, in most cases) has then THREE heat exchangers (w-w vs w-a does not matter)

These three heat exchangers are

1. Ground loop to refrigerant
2. Refrigerant to radiant loop

OR

Refrigerant to forced air
3. Desuperheater (refrigerant to water)

The desuperheater takes advantage of the fact that the temperatures of the refrigerant loop inside the heat pump are quite high, with R-22 the temps can get near 200F. These high temps exist no matter whether the heat pump is in heating mode or cooling mode.

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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.