Performance Analysis of Coupled System of CO2 Transcritical Heat Pump and Rankine Cycle

Hong Li Wang; Jing Rui Tian; Yi Tai Ma; Xiu Juan Hou

doi:10.4028/www.scientific.net/AMR.291-294.1860

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 291-294Performance Analysis of Coupled System of CO2...

Performance Analysis of Coupled System of CO₂ Transcritical Heat Pump and Rankine Cycle

Abstract:

Based on thermodynamic principles, the coupled systems performance of the Rankine cycle and the transcritical CO₂ compression cycles with a throttle valve and the cycle with an expander were analyzed, respectively. The results show that the corresponding maximum performance in transcritical CO₂ heat pump, there is an optimal efficiency of the coupled system. With the temperature increasing of boiler feed water, the efficiency of the two coupled system showed an increasing trend; with increasing of discharge pressure of condenser or outlet temperature of gas cooler, both of the two kinds coupled system efficiency showed a downward trend. Under the same conditions, the efficiency of the coupled system with an expander is better than the system with a throttle valve. This paper can provide the fundamental datum for the power plant waste heat recovery.

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Periodical:

Advanced Materials Research (Volumes 291-294)

Pages:

1860-1865

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.291-294.1860

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Online since:

July 2011

Authors:

Hong Li Wang, Jing Rui Tian, Yi Tai Ma, Xiu Juan Hou

Keywords:

Coupled System, Performance Analysis, Transcritical CO₂ Heat Pump, Waste Heat Recovery

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