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Journal of Zhejiang University SCIENCE A 2007 Vol.8 No.2 P.197-204

http://doi.org/10.1631/jzus.2007.A0197


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


Author(s):  QIN Feng, CHEN Jiang-ping, ZHANG Wen-feng, CHEN Zhi-jiu

Affiliation(s):  Institute of Refrigeration and Cryogenic Engineering, Shanghai Jiao Tong University, Shanghai 200030, China; more

Corresponding email(s):   fqin@mail.sjtu.edu.cn

Key Words:  Metal hydride, Air conditioning, Reaction bed, Automobile, Coefficient of performance (COP)


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 A, 2007, 8(2): 197-204.

@article{title="Metal hydride work pair development and its application on automobile air conditioning systems",
author="QIN Feng, CHEN Jiang-ping, ZHANG Wen-feng, CHEN Zhi-jiu",
journal="Journal of Zhejiang University Science A",
volume="8",
number="2",
pages="197-204",
year="2007",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2007.A0197"
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%T Metal hydride work pair development and its application on automobile air conditioning systems
%A QIN Feng
%A CHEN Jiang-ping
%A ZHANG Wen-feng
%A CHEN Zhi-jiu
%J Journal of Zhejiang University SCIENCE A
%V 8
%N 2
%P 197-204
%@ 1673-565X
%D 2007
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2007.A0197

TY - JOUR
T1 - Metal hydride work pair development and its application on automobile air conditioning systems
A1 - QIN Feng
A1 - CHEN Jiang-ping
A1 - ZHANG Wen-feng
A1 - CHEN Zhi-jiu
J0 - Journal of Zhejiang University Science A
VL - 8
IS - 2
SP - 197
EP - 204
%@ 1673-565X
Y1 - 2007
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2007.A0197


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.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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[8] Nakamura, H., Nakamura, Y., Fujitani, S., 1997. A method for designing a hydrogen absorbing LaNi5−xyMnxAly alloy for a chemical refrigeration system. Journal of Alloys and Compounds, 252(1-2):83-87.

[9] Oi, T., Maki, K., Sakaki, Y., 2004. Heat transfer characteristics of the metal hydride vessel based on the plate-fin type heat exchanger. J. Power Sources, 125(1):52-61.

[10] Sánchez, A.R., Klein, H.P., Groll, M., 2003. Expanded graphite as heat transfer matrix in metal hydride beds. Int. J. Hydrogen Energ., 28(5):515-527.

[11] Srivastava, S., Srivastava, O.N., 1999. Synthesis, characterization and hydrogenation behaviour of composite hydrogen storage alloys: LaNi5/La2Ni7, LaNi3. Journal of Alloys and Compounds, 282(1-2):197-203.

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