Plastic Piping Materials for Geothermal/Geoexchange Heating and Cooling Applications
|Publication Date:||1 March 2018|
Geothermal or geoexchange heating and cooling systems, also referred to as "ground source", "ground-coupled" or "earth energy" heat pump systems, are "…self-contained, electrically-powered
The three primary categories of geothermal or geoexchange heating and cooling systems are commonly referred to as closed-loop, open-loop and direct-exchange:
• Closed-loop systems utilize plastic piping systems for the ground-coupled heat exchanger piping system, and are the primary focus of this technical note.
• Open-loop systems utilize ground water or surface water for the purpose of extracting or rejecting heat, as the water is circulated through a mechanical heat pump. While open-loop systems utilize the types of plastic pipes included in this Technical Note, these systems are not the focus of this document.
• Direct-exchange systems utilize copper tubing embedded in the ground with refrigerant circulating directly within this buried copper tubing. These systems will not be addressed in this Technical Note.