How hard a heat pump compressor has to work is directly proportional to the "temperature lift" it has to produce. The greater the temperature lift, the harder the compressor has to work and the more power is needed to run it. Looking at the compression ratio the compressor has to achieve to produce the desired temperature to deliver the heating or cooling required is the compression ratio of the compressor.
Radiant floor heating works beautifully with a GCHP system...they seem to be meant for each other! But the design of the radiant floor system affects the efficiency of the heat pump, the capacity of heat pump needed, the size (and cost) of the GHX needed, the longevity of the compressor, and even the noise made by the compressor. An article about the efficiency & capacity of the heat pump can be found in a previous blog article. In this article I'd like to talk about how it affects the size of the GHX.
In my blog I'll be expressing my opinions about what I've the learned about ground coupled heat pump (GCHP) systems over the last 30 years. I've been very fortunate to work with many interesting people who are passionate about this technology...engineers, geologists, mechanical contractors, drillers, excavation contractors...in different parts of the world. I've learned a lot from them and will be using this forum to pass on some of the things I've learned and feel are important. Please feel free to use this information if you feel it's worthwhile...hopefully you can avoid some of the same mistakes I've learned from.
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