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Development of a metal hydride refrigeration system as an exhaust gas-driven automobile air conditioner

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  • Qin, Feng
  • Chen, Jiangping
  • Lu, Manqi
  • Chen, Zhijiu
  • Zhou, Yimin
  • Yang, Ke

Abstract

Aiming at developing exhaust gas-driven automobile air conditioners, two types of systems varying in heat carriers were preliminarily designed. A new hydride pair LaNi4.61Mn0.26Al0.13/La0.6Y0.4Ni4.8Mn0.2 was developed working at 120–200°C/20–50°C/−10–0°C. P-C isotherms and reaction kinetics were tested. Reaction enthalpy, entropy and theoretical cycling coefficient of performance (COP) were deducted from Van’t-Hoff diagram. Test results showed that the hydride pair has flat plateau slopes, fast reaction dynamics and small hystereses; the reaction enthalpy of the refrigeration hydride is −27.1kJ/mol H2 and system theoretical COP is 0.711. Mean particle sizes during cycles were verified to be an intrinsic property affected by constitution, heat treatment and cycle numbers rather than initial grain sizes. Based on this work pair, cylindrical reactors were designed and a function proving metal hydride intermittent refrigeration system was constructed with heat conducting oil as heat source and water as heat sink. The reactor equivalent thermal conductivity is merely 1.3W/(mK), which still has not meet practical requirement. Intermittent refrigeration cycles were achieved and the average cooling power is 84.6W at 150°C/30°C/0°C with COP being 0.26. The regulations of cycling performance and minimum refrigeration temperature (MRT) were determined by altering heat source temperature. Results showed that cooling power and system COP increase while MRT decreases with the growth of heat source temperature. This study develops a new hydride pair and confirms its application in automobile refrigeration systems, while their heat transfer properties still need to be improved for better performance.

Suggested Citation

  • Qin, Feng & Chen, Jiangping & Lu, Manqi & Chen, Zhijiu & Zhou, Yimin & Yang, Ke, 2007. "Development of a metal hydride refrigeration system as an exhaust gas-driven automobile air conditioner," Renewable Energy, Elsevier, vol. 32(12), pages 2034-2052.
    • Handle: RePEc:eee:renene:v:32:y:2007:i:12:p:2034-2052
    DOI: 10.1016/j.renene.2006.10.014
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    Citations

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    Cited by:

    1. Takasu, Hiroki & Ryu, Junichi & Kato, Yukitaka, 2017. "Application of lithium orthosilicate for high-temperature thermochemical energy storage," Applied Energy, Elsevier, vol. 193(C), pages 74-83.
    2. Meng, Xiangyu & Yang, Fusheng & Bao, Zewei & Deng, Jianqiang & Serge, Nyallang N. & Zhang, Zaoxiao, 2010. "Theoretical study of a novel solar trigeneration system based on metal hydrides," Applied Energy, Elsevier, vol. 87(6), pages 2050-2061, June.
    3. Manzela, André Aleixo & Hanriot, Sérgio Morais & Cabezas-Gómez, Luben & Sodré, José Ricardo, 2010. "Using engine exhaust gas as energy source for an absorption refrigeration system," Applied Energy, Elsevier, vol. 87(4), pages 1141-1148, April.
    4. Wang, Shengnan & Li, Yunhua & Li, Yun-Ze & Peng, Xing & Mao, Yufeng, 2018. "Exergy based parametric analysis of a cooling and power co-generation system for the life support system of extravehicular spacesuits," Renewable Energy, Elsevier, vol. 115(C), pages 1209-1219.
    5. Vamsi Krishna Kukkapalli & Sunwoo Kim & Seth A. Thomas, 2023. "Thermal Management Techniques in Metal Hydrides for Hydrogen Storage Applications: A Review," Energies, MDPI, vol. 16(8), pages 1-27, April.
    6. Cot-Gores, Jaume & Castell, Albert & Cabeza, Luisa F., 2012. "Thermochemical energy storage and conversion: A-state-of-the-art review of the experimental research under practical conditions," Renewable and Sustainable Energy Reviews, Elsevier, vol. 16(7), pages 5207-5224.
    7. Siddiqui, Mohd Asjad & Khaliq, Abdul & Kumar, Rajesh, 2021. "Proposal and analysis of a novel cooling-power cogeneration system driven by the exhaust gas heat of HCCI engine fuelled by wet-ethanol," Energy, Elsevier, vol. 232(C).
    8. Yang, Fusheng & Wu, Zhen & Liu, Shengzhe & Zhang, Yang & Wang, Geoff & Zhang, Zaoxiao & Wang, Yuqi, 2018. "Theoretical formulation and performance analysis of a novel hydride heat Pump(HHP) integrated heat recovery system," Energy, Elsevier, vol. 163(C), pages 208-220.
    9. Kölbig, M. & Weckerle, C. & Linder, M. & Bürger, I., 2022. "Review on thermal applications for metal hydrides in fuel cell vehicles: Operation modes, recent developments and crucial design aspects," Renewable and Sustainable Energy Reviews, Elsevier, vol. 162(C).
    10. Li, Jigang & Guo, Yanru & Jiang, Xiaojing & Li, Shuan & Li, Xingguo, 2020. "Hydrogen storage performances, kinetics and microstructure of Ti1.02Cr1.0Fe0.7-xMn0.3Alx alloy by Al substituting for Fe," Renewable Energy, Elsevier, vol. 153(C), pages 1140-1154.
    11. Kölbig, Mila & Bürger, Inga & Linder, Marc, 2021. "Thermal applications in vehicles using Hydralloy C5 in single and coupled metal hydride systems," Applied Energy, Elsevier, vol. 287(C).
    12. Serge Nyallang Nyamsi & Ivan Tolj & Mykhaylo Lototskyy, 2019. "Metal Hydride Beds-Phase Change Materials: Dual Mode Thermal Energy Storage for Medium-High Temperature Industrial Waste Heat Recovery," Energies, MDPI, vol. 12(20), pages 1-27, October.

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