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日本热泵的发展可以分为五个时期,即草创期(1930～1950):有若干先驱者作应用热泵的试验,热泵的主要部件均系进口,再建期(1950～1965):利用水力发电的多余电力,驱动机械式热泵,用以制盐。此外还将热泵用于电话局和广播电台等特殊建筑的空调;成长前期(1965～1970):60年代初期开发的螺杆或热泵有很大的发展,从清洁和环境保护的观点出发,要求发展热泵技术。成
The development of Japan’s heat pumps can be divided into five periods, namely, the period of grass-making (1930-1950). There are several pioneers who used the test of applied heat pumps. The main components of the heat pumps are imported and rebuilt (1950-1965) Excess electricity, driving mechanical heat pump, for salt. In addition, heat pumps were also used for air conditioners for special buildings such as telephone offices and radio stations. In the early stage of growth (1965-1970), there was a great development in the screw or heat pump developed in the early 1960s. From the standpoint of cleanliness and environmental protection, development was demanded Heat pump technology. to make