氨水溶液解吸-压缩制冷循环的理论研究与实验

Theoretical Studies of Ammonia-water Desorption and Absorption Compression Refrigeration Cycle and experiments

氨水溶液解吸-压缩制冷循环(简称ADAR循环)是1种以氨水溶液解吸-吸收过程取代蒸发和冷凝过程的制冷循环。对该循环进行理论分析和热力计算,并对循环的关键步骤低压发生过程进行实验。结果表明:在相同高低温下ADAR循环的理论制冷系数随低压发生过程压降幅度的减小而升高;在其他条件不变的情况下,增大冷却水进口温度,循环COP下降;增大低温热媒进口温度,循环COP升高;低压发生器的变压解吸过程可以实现。

Ammonia-water desorption and absorption compression refrigeration cycle （ADAR cycle） takes desorption and absorption processes instead of evaporation and condensation processes in traditional refrigeration cycle. In this paper, thermodynamics analysis of ADAR cycle was made. The results show that in the case of same higher and lower temperature, COP of ADAR cycle increases with the decrease of pressure drop range; in the same outer conditions, COP increases with the inlet temperature decrease of cooling water or the inlet temperature increase of heat medium. The experiments of ammonia-water solution desorption in low temperature and pressure is made and the results show that desorption can take place in low temperature and pressure which the possibility of ADAR cycle is verified.