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Ground Source Heat Pumps (aka “Geothermal Heat Pumps”) Typically use a large network of polyethylene pipes to extract or dissipate heat to and from the ground. Pipes can be horizontal (trenches) or vertical (drilled, most common in CT), or submerged in ponds (uncommon). Most are “closed loops” with food grade antifreeze. More efficient than air source heat pumps since the temperature of the ground is relatively stable (around 50 degrees F). Most expensive heat pump option (because of the ground coupling). Installed cost of approximately $9000 per ton (before incentives or tax credits). A typical residential system ranges from $36,000 to $45,000 (excluding tax credits and incentives) Typically are ducted, but some models can provide hot water for baseboard heating and/or provide domestic hot water. 30 percent tax credit through December 2016.PDF Image | Renewable Thermal Technologies: Heat Pumps
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CO2 Organic Rankine Cycle Experimenter Platform The supercritical CO2 phase change system is both a heat pump and organic rankine cycle which can be used for those purposes and as a supercritical extractor for advanced subcritical and supercritical extraction technology. Uses include producing nanoparticles, precious metal CO2 extraction, lithium battery recycling, and other applications... More Info
Heat Pumps CO2 ORC Heat Pump System Platform More Info
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