其他摘要：As weather is cold during a long period of time in the northeast of China, this paper presents a passive low-temperature air-cooler combining the passive low-temperature natural-circulatory technology. It builds a mathematical model which the heat exchange efficiency of the passive low-temperature air cooler was analyzed. The result indicates that the passive low-temperature air-cooler which makes use of the natural cooling source in the cold area can reduce the consumption of energy or even no consumption of energy. This can not only save a lot of energy but also protect the environment.
