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11-1 Refrigerators and Heat Pumps. RefrigeratorA device that transfers heat from a low-temperature region to a high-temperature regionThe objective of a refrigerator is to maintain the refrigerated space at a low temperature by removing heat from itRefrigerantThe working fluid used in a refrigeration cycleHeat PumpAnother device that transfers heat from a low-temperature region to a high-temperature regionThe objective of a heat pump is to maintain a heated space at a high temperature. 9450
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