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一、前言 常规能源的日益紧缺,是今日世界的普遍倾向。近年来国外在回收低位热能方面进展甚快,并已进入商品化。我国工业生产中,一般对排出温度在30—50℃的废水废热不再回收利用,而直接排放掉,这类低位热能面广量大。另一方面,很多场合需要的低温热能(如纺织、牛奶、啤酒、屠宰等工厂需要60—70℃的热水)通常是从锅炉蒸汽中直接取得,将高品位能量作为低品位能量使用,虽然在热量交换上是等量的,但其品质是不等价的,这从能源利用来讲,无疑是一种浪费.氨水吸收一再吸式热泵是利用热能驱动的热泵,它的合理利用在节约一次能源方面可望获得较好的效益。
I. Preface The growing shortage of conventional energy is a common trend in the world today. In recent years, foreign countries have made rapid progress in recovering low-grade heat energy and have already begun to commercialize them. China’s industrial production, the general discharge of waste water at a temperature of 30-50 ℃ waste heat is no longer recycled, but directly discharged, such a wide range of low-level heat energy. On the other hand, the low-temperature heat energy (such as textile, milk, beer, slaughter and other plants that need 60-70 ℃ hot water) in many occasions is usually obtained directly from boiler steam and high-grade energy is used as low-grade energy. In heat exchange is the same amount, but its quality is not equal, which is undoubtedly a waste from the energy use.Ammonia absorption re-suction heat pump is the use of heat-driven heat pump, it is reasonable to use in saving A primary energy is expected to get better results.