1. Using the method of optimal efficiency and maximal quantity of refrigerating output, a thermoelectricity refrigeration system commix with compress refrigeration is designed.
   本文对塑料片低温对折机功率热电制冷系统的设计方案进行了探讨。
2. Operating costs of using the steam jet refrigeration system to cool the temperature of water in air conditioning system are lower than the refrigerative compressor.
   用蒸汽喷射制冷设备作为空气调节系统的冷源,不论在基建费用及经常运转费用方面均较氨冷冻机来得经济,因此近年来它已渐为有关工业部门所重视。

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