Introduction to Heat Pumps
C10.Outside Cold Air
The primary difference between a
heat pumpand a
vapor-compression refrigeratoris that the objective is not to remove heat from the cold reservoir. The objective of a
heat pumpis to deliver heat to the hot reservoir: QH.
The range of operating temperatures for a household
heat pumpis very similar to the temperature range for a household refrigerator.
The hot reservoir (the air in your home) is typically at about 25°C and the cold reservoir (the outdoor air on a winter day) might be at -5°C.
It is not surprising that many of the same
refrigerantsare used for
heat pumpsand refrigerators, including
Heat pumpsalso operate on the same cycle as the
vapor-compression refrigeration cycle.
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