低温热管中无氟制冷剂HCR-22的蓄冷效果  

Cooling effect of fluorine free refrigerant HCR-22 used in heat pipe

作　　者：刘金光[1,2] 熊旭波 王世清[1,2] 张岩[1,2] 姜文利[1,2] 

机构地区：[1]青岛农业大学食品科学与工程学院,青岛266109 [2]青岛市现代农业质量与安全工程重点实验室,青岛266109 [3]青岛澳维康生物科技工程有限公司,青岛266071

出　　处：《农业工程学报》2016年第19期268-273,共6页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家自然基金项目(31271963)

摘　　要：为解决氟利昂制冷剂对臭氧层破坏和气候变暖潜能值高的缺陷,基于热管技术,该文设计了一套分离式低温热管蓄冷装置,用新型无氟制冷剂HCR-22替代传统制冷剂R-22,以蓄冷量为指标,研究了2种制冷剂在不同的充液率和冷凝/蒸发段面积比条件下的蓄冷效果。试验结果表明:HCR-22用于低温热管的最佳充液率为80%,与R-22相同;热管模组运行70h时,HCR-22和R-22的蓄冷量分别为16230.52和16252.09 k J;最佳充液时,HCR-22用于低温热管的最优冷凝/蒸发段面积比为2.8:1,小于R-22时的3:1;HCR-22与R-22在相变传热中有近乎相同的传热稳定性,但制冷剂的用量仅为R-22的1/3。该研究为新型无氟制冷剂HCR-22替代传统制冷剂R-22提供了依据和技术支持,对低温热管的推广应用提供保障。In order to reduce Freon refrigerant’s damage to the ozone layer and its high potential value of climate warming, an accumulation of cold source device by the detached low temperature heat pipe was designed. The heat pipe cold storage device was composed of a reservoir, heat pipe, and temperature monitoring system. The refrigerant absorbs heat from the reservoir in the evaporation section of the heat pipe followed by its gasification. After that the exchanged heat and release of latent heat of vaporization with cold air in the condensation section of the heat pipe occur followed by liquefication of refrigerant. The liquefied refrigerant flows back to the evaporation section of the heat pipe by the action of gravity. As such an automatic cycle is accomplished in this way. With continuous progress of the gasification and liquefaction for the refrigerant, the coldness resource is continuously transferred and stored in the reservoir, and the temperature of reservoir gradually decreases. In this study, we replaced the traditional refrigerant R-22 with a new type of fluorine free refrigerant HCR-22, taking cold storage capacity as an index, and conducted an experiment for 70 h. We studied the cold storage effects of two kinds of refrigerant in different liquid filling ratio and condensation/evaporation section area ratio. The test results showed that the best filling ratio of HCR-22 for low temperature heat pipe was 80%, which was the same as R-22. When the heat pipe module was running 70 h, the cold storage capacity of refrigerant HCR-22 was higher, and the cold storage capacity of HCR-22 and R-22 were 16 230.52 and 16 252.09 kJ, respectively. Under the condition of best liquid filling, HCR-22 for low temperature heat pipe of the optimal condensation/evaporation section area ratio was 2.8：1, less than 3：1 with the R-22. Obviously, the use of HCR-22 refrigerant can save more metal materials. The heat transfer stability of HCR-22 and R-22 was the same in the phase change heat transfer, and the temperature variatio

关 键 词：制冷剂 热管 冷藏 HCR-22 R-22 

分 类 号：TS205.9[轻工技术与工程—食品科学]