新型太阳能增压吸收式制冷循环

A New Solar-Supercharge Absorption Refrigerator Circle

提出了一个以NH3-LiNO3为工质对、压缩蒸发器出口冷剂蒸气、利用太阳能进行制冷的新循环,采用数值计算的方法对新循环的性能指数、效率、电热比和冷却水量进行了研究,计算结果表明补偿相当于0.7%-10.68%太阳能能量的电能可使热源进口温度自95℃降低16℃-22℃,新循环的性能指数在0.495-1.201之间,效率在0.245-0.122之间,冷却水流量随驱动热源进口温度的降低基本呈线性从7.24kg/s减少至3.74kg/s。克服了传统循环受限于太阳能波动的不足,具有很好的节能效益和实践价值。

A new absorption refrigeration circle is proposed,which takes NH3-LiNO3 as the working fluids,compresses the refrigerant vapor out of evaporator and is driven by solar energy.The COP,exergy efficiency,the ratio of the electricity to heat and the flow rate of the cooling water in the proposed circle is numerically studied.The results reveals that： taking electricity about 0.7 to 10.68 percent of the solar energy can reduce 16 to 22℃ of input temperature of the driven water from 95℃;the COP is between 0.495 and 1.201 while the exergy efficiency is between 0.245 and 0.122;the flow rate of cooling water will be decreased linearly from 7.24kg/s to 3.74kg/s with the decrease of the temperature of driven water.This circle overcomes the shortage that the traditional solar cycle is subjected to the fluctuation of solar,so it has good energy efficiency and practical value.