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Research of cooling load & chiller selection in metro station

Author

Listed:
  • Zhiyi Wang
  • Jiachen Zhong
  • Zudong Pan

Abstract

Air conditioning is of the most energy saving potential system in the metro station. This study analyzes the composition and characteristics of air conditioning cooling load in a metro station. The hourly distribution and the proportion of each cooling load are calculated. The results show that cooling load fluctuation of metro air conditioning is large, and the operating time of different load varies greatly. According to the air conditioning cooling load, the coefficient of performance of the fixed frequency screw, variable frequency screw, series countercurrent screw and magnetic bearing centrifugal chiller under the load of 20–100% are tested. The annual operating cost of four chillers is compared. Test results show that the magnetic bearing centrifugal chiller has a much higher coefficient of performance at part load and lower annual operating cost. Increased initial investment can be recovered in less than 2 years. The magnetic bearing centrifugal chiller is suitable as a cold source of air conditioning system in the metro station.

Suggested Citation

  • Zhiyi Wang & Jiachen Zhong & Zudong Pan, 0. "Research of cooling load & chiller selection in metro station," International Journal of Low-Carbon Technologies, Oxford University Press, vol. 15(4), pages 506-512.
    • Handle: RePEc:oup:ijlctc:v:15:y::i:4:p:506-512.
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    File URL: http://hdl.handle.net/10.1093/ijlct/ctaa015
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