| 单词 | heat-pump |
| 释义 | > as lemmasheat-pump heat-pump n. a heat-engine working in reverse (such as a refrigerator), in which work supplied to it is used to transfer heat from a colder to a hotter body. ΘΚΠ the world > matter > properties of materials > temperature > heat > [noun] > heat exchange or transfer > device for heat-pump1894 interchanger1896 heat exchanger1902 1894 J. A. Ewing Steam-engine iv. 118 By a refrigerating machine or heat-pump is meant a machine which will carry heat from a cold to a hotter body. 1957 Encycl. Brit. XIX. 55/2 The heat-pump system..is a conventional refrigeration system where the heat rejected by the refrigerant at the condenser is utilized for heating during the winter while the evaporator absorbs heat from..any..low-grade heat source. 1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) VI. 369/1 Unless the price of electric energy is low..the heat pump cannot be justified solely as a heating device. However, if there is also need for comfort cooling..in the summer, the heat pump, to do both the cooling and heating, becomes attractive. < as lemmas |
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