During the last two decades considerable effort has been made to introduce the heat pump for heating and cooling buildings. The capacity of the heat pumps, installed, ranges from three tons to five hundred and fifty tons of refrigeration. The heat sources and the heat sinks are atmospheric air, water, and the earth. In the commercial field the heat pump principle has proved to be practical and satisfactory wherever suitable heat sources and heat sinks were available.

Topics
Refrigerators, Thermodynamic states and processes
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© 1952 American Institute of Physics.
1952
American Institute of Physics
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