Absorption heat pump

Japanese: 吸収式熱ポンプ - きゅうしゅうしきねつぽんぷ
Absorption heat pump

...In a vapor compression heat pump, the refrigerant receives heat from the outside air, groundwater, wastewater, etc. in the evaporator and becomes vapor. It is compressed in the compressor to increase its pressure and temperature, then it is liquefied by giving up heat to the cooling fluid in the condenser (or releasing heat in the radiator), and returns to the evaporator inlet through the expansion valve. In the latter absorption heat pump, the refrigerant that absorbs heat in the evaporator is absorbed by the absorbent, and the solution is pressurized and heated to generate refrigerant vapor, which is then led to the condenser. It is said that Kelvin prototyped a heat pump that used air as a medium around 1852, but it was not put to practical use until the 1930s.

*Some of the terminology used to refer to "absorption heat pumps" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…蒸気圧縮式熱ポンプでは,冷媒は蒸発器で外気や地下水,排水などからの熱を受け取って蒸気となり,圧縮機で圧縮されて圧力,温度が上昇した後,凝縮器で熱を冷却流体に与えて(あるいは放熱器で放熱)液化し,膨張弁を経て蒸発器入口に戻る。後者の吸収式熱ポンプの場合は,蒸発器で吸熱した冷媒を吸収剤に吸収させ,その溶液を昇圧した後に加熱して冷媒蒸気を発生させて凝縮器に導く。 1852年ころケルビンが空気を媒体とした熱ポンプを試作したといわれているが,その実用は1930年代に入ってからのことである。…

※「吸収式熱ポンプ」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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