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Attainability of the Carnot efficiency with real gases in the regenerator of the refrigeration cycle

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  • Cao, Qiang

Abstract

Improving efficiency is an enduring effort for all work-heat conversion cycles. Ideal regenerators working with ideal gases bring about a lossless work and heat transfer over a temperature gradient, but real gases give rise to an “intrinsic” heat loss in regenerators because of the time-averaged enthalpy flow associated with the pressure dependence. Real gas effects play a vital role on the coefficient of performance (COP) of regenerators of refrigeration cycles working at the temperatures close to or below the critical point. The “intrinsic” heat loss of real gases degrades the theoretical COP of regenerators to as low as 1% of the Carnot efficiency. In this paper, an approach of heat input or removal aiming to improve the COP is proposed. The theoretical analysis of this approach reveals the underlying mechanism. It is shown that the theoretical COP of an ideal regenerator working with a real gas applying this approach is identical to the Carnot efficiency. A simplified approach of heat input is further analyzed. The Carnot efficiency can be attained under certain circumstances, and it is possible to obtain over 90% of the Carnot efficiency with a discrete method. The theory of improving the COP with the approach of heat input in discrete regenerator locations is supported by the experiment results found in the relevant literature. This new approach provides a potential way to significantly improve the efficiency of the regenerator of the refrigeration cycle working at the temperatures close to or below the critical point. This approach may further provide a reference for studies of the heat pump cycle and the engine cycle working with real gases.

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  • Cao, Qiang, 2018. "Attainability of the Carnot efficiency with real gases in the regenerator of the refrigeration cycle," Applied Energy, Elsevier, vol. 220(C), pages 705-712.
  • Handle: RePEc:eee:appene:v:220:y:2018:i:c:p:705-712
    DOI: 10.1016/j.apenergy.2018.03.102
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    1. Wang, Kai & Dubey, Swapnil & Choo, Fook Hoong & Duan, Fei, 2016. "Modelling of pulse tube refrigerators with inertance tube and mass-spring feedback mechanism," Applied Energy, Elsevier, vol. 171(C), pages 172-183.
    2. Maraver, Daniel & Sin, Ana & Royo, Javier & Sebastián, Fernando, 2013. "Assessment of CCHP systems based on biomass combustion for small-scale applications through a review of the technology and analysis of energy efficiency parameters," Applied Energy, Elsevier, vol. 102(C), pages 1303-1313.
    3. Wang, Longyi & Wu, Mei & Sun, Xiao & Gan, Zhihua, 2016. "A cascade pulse tube cooler capable of energy recovery," Applied Energy, Elsevier, vol. 164(C), pages 572-578.
    4. Aneke, Mathew & Wang, Meihong, 2016. "Energy storage technologies and real life applications – A state of the art review," Applied Energy, Elsevier, vol. 179(C), pages 350-377.
    5. Poppi, Stefano & Bales, Chris & Heinz, Andreas & Hengel, Franz & Chèze, David & Mojic, Igor & Cialani, Catia, 2016. "Analysis of system improvements in solar thermal and air source heat pump combisystems," Applied Energy, Elsevier, vol. 173(C), pages 606-623.
    6. Sciacovelli, A. & Vecchi, A. & Ding, Y., 2017. "Liquid air energy storage (LAES) with packed bed cold thermal storage – From component to system level performance through dynamic modelling," Applied Energy, Elsevier, vol. 190(C), pages 84-98.
    7. Zhu, Jiahui & Yuan, Weijia & Qiu, Ming & Wei, Bin & Zhang, Hongjie & Chen, Panpan & Yang, Yanfang & Zhang, Min & Huang, Xiaohua & Li, Zhenming, 2015. "Experimental demonstration and application planning of high temperature superconducting energy storage system for renewable power grids," Applied Energy, Elsevier, vol. 137(C), pages 692-698.
    8. Shackleton, R.J. & Probert, S.D. & Mead, A.K. & Robinson, A., 1994. "Future prospects for the electric heat-pump," Applied Energy, Elsevier, vol. 49(3), pages 223-254.
    9. Kumar, Satish & Kwon, Hyouk-Tae & Choi, Kwang-Ho & Lim, Wonsub & Cho, Jae Hyun & Tak, Kyungjae & Moon, Il, 2011. "LNG: An eco-friendly cryogenic fuel for sustainable development," Applied Energy, Elsevier, vol. 88(12), pages 4264-4273.
    10. Hu, J.Y. & Luo, E.C. & Zhang, L.M. & Wang, X.T. & Dai, W., 2013. "A double-acting thermoacoustic cryocooler for high temperature superconducting electric power grids," Applied Energy, Elsevier, vol. 112(C), pages 1166-1170.
    11. Hu, J.Y. & Chen, S. & Zhu, J. & Zhang, L.M. & Luo, E.C. & Dai, W. & Li, H.B., 2016. "An efficient pulse tube cryocooler for boil-off gas reliquefaction in liquid natural gas tanks," Applied Energy, Elsevier, vol. 164(C), pages 1012-1018.
    12. Liang, Youcai & Al-Tameemi, Mohammed & Yu, Zhibin, 2018. "Investigation of a gas-fuelled water heater based on combined power and heat pump cycles," Applied Energy, Elsevier, vol. 212(C), pages 1476-1488.
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