Energy 101: Geothermal Heat Pumps
National Renewable Energy Laboratory (NREL)
This introductory video describes the basic principles of residential geothermal heat pumps.
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More information is given at [http://www1.eere.energy.gov/geothermal/]. Because this has a residential focus, teachers should discuss the capital cost of geothermal systems as they are expensive to install (Capital Cost of $20k - $35k) and costs vary depending on location/ease of drilling. The video only addresses the lower operating costs of a geothermal heat pump. Cost estimator link: [http://www.geosunnrg.com/geothermal-cost-estimator/index.cfm?step1]