【作者】 何一坚； 陈光明； 孟祥锋；

【Author】 He Yijian Chen Guangming Meng Xiangfeng (Refrigeration&Cryogenic Institute, Zhejiang University, 310027)

【机构】 浙江大学制冷与低温研究所；

【摘要】 本文研究的新循环(Auto-cascade absorption refrigeration cycle-ACAR循环) 采用对环境友好的三元非共沸混合物R23+R32+R134a为制冷剂,与之相匹配的有机物 DMF为吸收剂。在相同的工况下,针对ACAR循环和传统循环进行了实验比较研究, 传统吸收循环在发生温度167℃和冷凝器的冷却水进口温度为20℃时仅能获得-24．5℃的最低制冷温度,ACAR循环非常容易地获得比较低的制冷温度并且在163℃的发生温度以及相同的冷凝条件下获得了-47℃的最低制冷温度,为目前吸收制冷在文献上报道过的最低制冷温度。实验结果表明ACAR循环可以获得远低于传统循环的制冷温度, 在利用热能获得深度冷冻上具有独特的优势。更多还原

【Abstract】 A new heat-driven absorption refrigeration system (Auto-cascade absorption refrigeration cycle-ACAR cycle) is proposed to achieve low temperatures. The mixture refrigerant R23+R32+R134a and an absorbent DMF are used as its working pak. The experiments are carried out under the same operation conditions for new cycle and traditional one. Under generation temperature of about 167℃ and inlet coolant temperature of 20℃, the traditional cycle can only achieve a lowest refrigeration temperature -24.5℃. However, new cycle can easily achieve a refrigeration temperature -47℃ under the same operation conditions, which is the lowest temperature obtained by absorption refrigeration in the literatures up to now. The results of experiments show that ACAR system can achieve much lower refrigeration temperatures than that of traditional one and has advantages for deep freezing.更多还原