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OS:Ground Source Heat Pump
From PESWiki
Contents |
Low Cost Ground Source Heat Pump
Objective
To build a ground source heat pump using common materials from the hardward store at low cost.
Proposed Technology
Utilize heat pipe technology commonly found in solar evacuated tubes. Use copper pipe threaded and capped at both ends for the heat pipe. The gravity fed evaporation/condensation cycle requires no motor or pump. Tubes can be placed in holes dug with a post hole auger. The fluid used in the pipe must boil at temperatures below 40 degrees F and should be non-toxic.
Background Information
- What are Heat Pipes?
- How are heat pipes used in solar collectors?
- IEA Heat Pump Centre Newsletter - in pdf format. See page 6 CO2 Ground-Coupled Probe. A test of using carbon dioxide in a heat pipe as a vertical ground heat exchanger.
- Chengdu Onergy Science and Technology - Onergy has invented Double-effective heat transfer technology enabling heat transfer in two ways: heat pipe and fine motion of water, and with high efficiency. It could get the utilization of solar at half the cost of using coal, making the Onergy's heat pipe in the geothermal application competitive. Onergy’s heat Pipe uses carbon dioxide as medium.
