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Experimental investigation on performance of transcritical CO2 heat pump system with ejector under optimum high-side pressure

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  • Xu, Xiao Xiao
  • Chen, Guang Ming
  • Tang, Li Ming
  • Zhu, Zhi Jiang

Abstract

Since the fixed ejector cannot adjust the optimum high-side pressure, the adjustable ejector is designed and built based on a transcritical CO2 heat pump system model results. The adjustable ejector is subjected to electrical pulses through the stepper motor which drives needle forward or backward movement to change the nozzle throat area for the optimum high-side pressure. Experimental investigation of the transcritical CO2 heat pump cycle with adjustable ejector is presented. The effects of the high-side pressure on the system performance are analyzed. A control strategy for maximum COPh is developed by correlating the CO2 pressure and temperature at the gas cooler exit, yielding the ejector optimum high-side pressure control equation. Experiment results show that there exist maximum values for heating performance coefficient and heat capacity with increasing high-side pressure. The increased high-side pressure has a positive effect on the system performance and outweighs lower ejector efficiencies. The ejector efficiency is mainly distributed within range of 20%–30%.

Suggested Citation

  • Xu, Xiao Xiao & Chen, Guang Ming & Tang, Li Ming & Zhu, Zhi Jiang, 2012. "Experimental investigation on performance of transcritical CO2 heat pump system with ejector under optimum high-side pressure," Energy, Elsevier, vol. 44(1), pages 870-877.
    • Handle: RePEc:eee:energy:v:44:y:2012:i:1:p:870-877
    DOI: 10.1016/j.energy.2012.04.062
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    References listed on IDEAS

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    1. Yang, Jun Lan & Ma, Yi Tai & Liu, Sheng Chun, 2007. "Performance investigation of transcritical carbon dioxide two-stage compression cycle with expander," Energy, Elsevier, vol. 32(3), pages 237-245.
    2. Yokoyama, Ryohei & Wakui, Tetsuya & Kamakari, Junya & Takemura, Kazuhisa, 2010. "Performance analysis of a CO2 heat pump water heating system under a daily change in a standardized demand," Energy, Elsevier, vol. 35(2), pages 718-728.
    3. Sarkar, Jahar, 2008. "Optimization of ejector-expansion transcritical CO2 heat pump cycle," Energy, Elsevier, vol. 33(9), pages 1399-1406.
    4. Yang, Jun Lan & Ma, Yi Tai & Li, Min Xia & Guan, Hai Qing, 2005. "Exergy analysis of transcritical carbon dioxide refrigeration cycle with an expander," Energy, Elsevier, vol. 30(7), pages 1162-1175.
    5. Yokoyama, Ryohei & Shimizu, Takeshi & Ito, Koichi & Takemura, Kazuhisa, 2007. "Influence of ambient temperatures on performance of a CO2 heat pump water heating system," Energy, Elsevier, vol. 32(4), pages 388-398.
    6. Yang, Jun Lan & Ma, Yi Tai & Li, Min Xia & Hua, Jun, 2010. "Modeling and simulating the transcritical CO2 heat pump system," Energy, Elsevier, vol. 35(12), pages 4812-4818.
    7. Mercangöz, Mehmet & Hemrle, Jaroslav & Kaufmann, Lilian & Z’Graggen, Andreas & Ohler, Christian, 2012. "Electrothermal energy storage with transcritical CO2 cycles," Energy, Elsevier, vol. 45(1), pages 407-415.
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    10. Rajib Uddin Rony & Huojun Yang & Sumathy Krishnan & Jongchul Song, 2019. "Recent Advances in Transcritical CO 2 (R744) Heat Pump System: A Review," Energies, MDPI, vol. 12(3), pages 1-35, January.
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