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2. Heat pumps
2.1 Principle
The heat pump principle has been known for a long time. It involves transferring heat from a low-temperature medium (cold source) to a higher-temperature medium (hot source) (figure 1 ). This transfer takes place via a refrigerant fluid, and requires the input of energy in the form of work.
In the case of a dwelling heated by a heat pump, the cold source is the outside environment, from which heat can be extracted:
or in ambient air ;
or in the land on which the house is built;
either in the water of a nearby river or in the water of...
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Heat pumps
Bibliography
Websites
ADEME-BRGM http://www.geothermie-perspectives.fr
Swiss Geothermal Society http://www.geothermal-energy.ch/
Société Canada-clim http://www.canada-clim.com
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