Metal hydride work pair development and its application on automobile air conditioning systems  

作　　者：QIN Feng CHEN Jiang-ping ZHANG Wen-feng CHEN Zhi-jiu 

机构地区：[1]Institute of Refrigeration and Cryogenic Engineering, Shanghai Jiao Tong University, Shanghai 200030, China [2]Research Center, Zhejiang Yinlun Machinery Co., Ltd., Tiantai 317200, China

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2007年第2期197-204,共8页浙江大学学报（英文版）A辑（应用物理与工程）

基　　金：Project (No. 50276063) supported by the National Natural Science Foundation of China

摘　　要：Aiming at developing exhaust gas driving automobile air conditioning systems, a hydride pair LaNi4.61Mn0.26A10.13/ La0.6Y0.4Ni4.8Mn0.2 was developed working at 393-473 K/293-323 K/263-273 K. Property tests showed that both alloys have flat plateau slopes and small hystereses; system theoretical coefficient of performance （COP） is 0.711. Based on this work pair, a function proving automobile metal hydride refrigeration system was constructed. The equivalent thermal conductivities of the activated reaction beds were merely 1.1-1.6 W/（m-K）, which had not met practical requirement. Intermittent refrigeration cycles were achieved and the average cooling power was 84.6 W at 423 K/303 K/273 K with COP being 0.26. By altering cycling parameters, experiment data showed that cooling power and system COP increase with the growth of heat source temperature as well as pre-heating and regeneration time while decrease with heat sink temperature increment. This study confirms the feasibility of automobile metal hydride refrigeration systems, while heat transfer properties of reaction beds still need to be improved for better performance.

关 键 词：Metal hydride Air conditioning Reaction bed AUTOMOBILE Coefficient of performance （COP） 

分 类 号：TB6[一般工业技术—制冷工程] TK91[动力工程及工程热物理]