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Thermodynamic performance of R32/R152a mixture for water source heat pumps

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  • Lee, Ho-Saeng
  • Kim, Hyeon-Ju
  • Kang, Dong-gyu
  • Jung, Dongsoo

Abstract

Air-conditioning and heat pumping performance of R32/R152a mixture is measured in the composition range of 20–50% R32 with an interval of 10% for the comparison with HCFC22 in a water source heat pump bench tester. Tests are carried out under the same capacity in the bench tester equipped with a variable speed open type compressor at the evaporation and condensation temperatures of 7/45 °C and −7/41 °C for summer and winter conditions, respectively. Test results show that the compressor power of R32/R152a mixture is up to 13.7% lower than that of HCFC22 while the coefficient of performance (COP) of R32/R152a mixture is up to 15.8% higher than that of HCFC22. From the view point of energy efficiency, R32/R152a mixture is excellent as compared to HCFC22. Compressor discharge temperatures of R32/R152a mixture are increased up to 15.4 °C as compared to those of HCFC22. The amount of charge for R32/R152a mixture is decreased up to 27% as compared to that of HCFC22. Overall, R32/R152a mixture is an excellent long term solution to replace HCFC22 in water source heat pumps under the similar evaporator and condenser temperatures. The flammability study shows that the mixture is virtually not flammable at the ‘drop-in’ composition of 36%R32/64%R152a.

Suggested Citation

  • Lee, Ho-Saeng & Kim, Hyeon-Ju & Kang, Dong-gyu & Jung, Dongsoo, 2012. "Thermodynamic performance of R32/R152a mixture for water source heat pumps," Energy, Elsevier, vol. 40(1), pages 100-106.
    • Handle: RePEc:eee:energy:v:40:y:2012:i:1:p:100-106
    DOI: 10.1016/j.energy.2012.02.024
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    References listed on IDEAS

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    1. Lohani, S.P. & Schmidt, D., 2010. "Comparison of energy and exergy analysis of fossil plant, ground and air source heat pump building heating system," Renewable Energy, Elsevier, vol. 35(6), pages 1275-1282.
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    1. Çakır, Uğur & Çomaklı, Kemal & Çomaklı, Ömer & Karslı, Süleyman, 2013. "An experimental exergetic comparison of four different heat pump systems working at same conditions: As air to air, air to water, water to water and water to air," Energy, Elsevier, vol. 58(C), pages 210-219.
    2. Mota-Babiloni, Adrián & Navarro-Esbrí, Joaquín & Makhnatch, Pavel & Molés, Francisco, 2017. "Refrigerant R32 as lower GWP working fluid in residential air conditioning systems in Europe and the USA," Renewable and Sustainable Energy Reviews, Elsevier, vol. 80(C), pages 1031-1042.
    3. Yang, Zhao & Wu, Xi, 2013. "Retrofits and options for the alternatives to HCFC-22," Energy, Elsevier, vol. 59(C), pages 1-21.
    4. Qv, Dehu & Dong, Bingbing & Cao, Lin & Ni, Long & Wang, Jijin & Shang, Runxin & Yao, Yang, 2017. "An experimental and theoretical study on an injection-assisted air-conditioner using R32 in the refrigeration cycle," Applied Energy, Elsevier, vol. 185(P1), pages 791-804.
    5. Kong, Xiangqiang & Jiang, Kailin & Dong, Shandong & Li, Ying & Li, Jianbo, 2018. "Control strategy and experimental analysis of a direct-expansion solar-assisted heat pump water heater with R134a," Energy, Elsevier, vol. 145(C), pages 17-24.
    6. Yang, Zhao & Wu, Xi & Tian, Tian, 2015. "Flammability of Trans-1, 3, 3, 3-tetrafluoroprop-1-ene and its binary blends," Energy, Elsevier, vol. 91(C), pages 386-392.
    7. Zhang, Jing & Zhang, Hong-Hu & He, Ya-Ling & Tao, Wen-Quan, 2016. "A comprehensive review on advances and applications of industrial heat pumps based on the practices in China," Applied Energy, Elsevier, vol. 178(C), pages 800-825.
    8. Zheng, Nan & Song, Weidong & Zhao, Li, 2013. "Theoretical and experimental investigations on the changing regularity of the extreme point of the temperature difference between zeotropic mixtures and heat transfer fluid," Energy, Elsevier, vol. 55(C), pages 541-552.

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