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A hybrid jet-pump CO 2 compression system for transport refrigeration

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  • M. Worall
  • S. Omer
  • S.B. Riffat

Abstract

A hybrid jet-pump CO 2 compression system that may enhance system COP and reduce the environmental impact of transport refrigeration is analysed. At an evaporator temperature of −15°C, an ambient temperature of 35°C and a generator temperature of 120°C, COP increases from 1.0 to 2.27 as subcooling increases from 0 to 20 K. Compressor work is reduced by 24% at 20 K subcooling. The optimum degree of subcooling was ∼10 K for the operating conditions examined. COP is improved while the size of heat exchangers required to operate the jet pump are minimised with respect to the overall weight of the system. Copyright , Oxford University Press.

Suggested Citation

  • M. Worall & S. Omer & S.B. Riffat, 2011. "A hybrid jet-pump CO 2 compression system for transport refrigeration," International Journal of Low-Carbon Technologies, Oxford University Press, vol. 6(4), pages 249-254, April.
    • Handle: RePEc:oup:ijlctc:v:6:y:2011:i:4:p:249-254
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    File URL: http://hdl.handle.net/10.1093/ijlct/ctr011
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    Cited by:

    1. Chen, Xiangjie & Omer, Siddig & Worall, Mark & Riffat, Saffa, 2013. "Recent developments in ejector refrigeration technologies," Renewable and Sustainable Energy Reviews, Elsevier, vol. 19(C), pages 629-651.
    2. Chen, Jianyong & Jarall, Sad & Havtun, Hans & Palm, Björn, 2015. "A review on versatile ejector applications in refrigeration systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 49(C), pages 67-90.
    3. Chen, Xiangjie & Worall, Mark & Omer, Siddig & Su, Yuehong & Riffat, Saffa, 2013. "Theoretical studies of a hybrid ejector CO2 compression cooling system for vehicles and preliminary experimental investigations of an ejector cycle," Applied Energy, Elsevier, vol. 102(C), pages 931-942.

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