| Metal hydride work pair development and its application on automobile air conditioning systems |
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| 作者姓名： | QIN Feng CHEN Jiang-ping ZHANG Wen-feng CHEN Zhi-jiu |
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| 作者单位： | QIN Feng1，CHEN Jiang-ping1，ZHANG Wen-feng2，CHEN Zhi-jiu1 (1Institute of Refrigeration and Cryogenic Engineering，Shanghai Jiao Tong University，Shanghai 200030，China) (2Research Center，Zhejiang Yinlun Machinery Co.，Ltd.，Tiantai 317200，China) |
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| 基金项目： | Project (No. 50276063) supported by the National Natural Science Foundation of China |
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| 摘 要： | INTRODUCTION Metal hydrides are special alloys which absorb and desorb hydrogen reversibly. At room temperature, metal hydrides could absorb as much hydrogen as liquid hydrogen of the same volume under much lower pressure and much higher temperature (Güther and Otto, 1999). Massive reaction heat is generated accompanying this reaction, which could be used for waste heat recovery, solar energy utilization and re-frigeration with no side effect to environment (Izhvanov et al., 1996). Con…
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| 关 键 词： | 金属氢化物 空气调节系统 氢能 制冷工程 |
| 收稿时间： | 2006-05-20 |
| 修稿时间： | 2006-08-21 |
Metal hydride work pair development and its application on automobile air conditioning systems |
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| QIN Feng CHEN Jiang-ping ZHANG Wen-feng CHEN Zhi-jiu.Metal hydride work pair development and its application on automobile air conditioning systems[J].Journal of Zhejiang University Science,2007,8(2):197-204. |
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| Authors: | Qin Feng Chen Jiang-ping Zhang Wen-feng Chen Zhi-jiu |
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| Institution: | (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 |
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| Abstract: | Aiming at developing exhaust gas driving automobile air conditioning systems, a hydride pair LaNi4.61Mn0.26Al0.13/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. |
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| Keywords: | Metal hydride Air conditioning Reaction bed Automobile Coefficient of performance (COP) |
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