International Scientific Journal

Thermal Science - Online First

Authors of this Paper

External Links

online first only

Experimental study on R1234yf heat pump at low ambient temperature and comparison with other refrigerants

In this paper, an integrated vapor injection compression heat pump system using R1234yf and R32, R410A, R22and R134a as working fluids was developed, and their heating performances under low ambient temperature were quantitatively evaluated. An experimental bench was built to test the system's working performance. The condensing temperature, evaporating temperature, power input, and other variables were analyzed to evaluate the system's heating capability and energy efficiency. Test results showed that the R1234yf system can run at the evaporating temperature of -20°C, but its heating Coefficient of Performance (COP) was 5% lower than R134a; The R1234yf vapor injection system provided very significant performance improvements for heating performance compared with no vapor injection: the heating capacity and heating COP can be improved by 14.3% and 11.7%, respectively.
PAPER REVISED: 2018-06-07
PAPER ACCEPTED: 2018-07-07
  1. Peng,Q.H.,Du.Q.G.,Progress in heat pump air conditioning systems for electric vehicles—a review, Energies, 9 (2016),4,pp.1-17.
  2. Chang,S.Y.,Kim,S.M.,et al.,Performance and heat transfer characteristics of hydrocarbon refrigerants in a heat pump system, Int. J. Refrig, 23 (2000),3, pp. 232-242.
  3. Zhao,Y., Wu, X., Retrofits and options for the alternatives to HCFC-22, Energy, 59(2013), pp.1-21.
  4. Patil, M.S., Kim,S.C.,et al.,Review of the thermo-physical properties and performance characteristics of a refrigeration system using refrigerant-based nanofluids,Energies,9(2016),1, pp.1-16.
  5. Yang,M.H., Wang,B.L., et al., Evaluation of two-phase suction, liquid injection and two-phase injection for decreasing the discharge temperature of the R32 scroll compressor, Int. J. Refrig, 59(2015), pp.269-280.
  6. Mota-Babiloni,A., Navarro-Esbri, J., et al.,Drop-in energy performance evaluation of R1234yf and R1234ze(E) in a vapor compression system as R134a replacements, Applied Thermal Engineering,71(2014),1, pp. 259-265.
  7. Bolaji,O., Huan, Z., Performance Investigation of Some Hydro-Fluorocarbon Refrigerants with Low Global Warming as Substitutes to R134a in Refrigeration Systems, Journal of Engineering Thermophysics,23(2014),2 , pp.148-157.
  8. Zilio, C., Brown, J.S., et al., The refrigerant R1234yf in air conditioning systems. Energy, 36(2011),10, pp.6110-6120.
  9. Navarro-Esbri,J., Moles,F., et al., Experimental analysis of the internal heat exchanger influence on a vapor compression system performance working with R1234yf as a drop-in replacement for R134a,Applied Thermal Engineering, 59(2013),1-2,pp.153-161.
  10. Xu,S.X., Fan, X.S., et al., Experimental investigation on heating performance of gas-injected scroll compressor using R32, R1234yf and their 20wt%/80wt% mixture under low ambient temperature, Int. J. Refrig,75(2017), pp.286-292.
  11. Dutta, A.K., Yanagisawa, T., et al., A study on compression characteristic of wet vapor refrigerant, Proceedings,International Compressor Engineering Conference, Purdue University, USA, 1996,PP.235-240.
  12. Dutta, A., Yanagisawa, T., et al., An investigation of the performance of a scroll compressor under liquid refrigerant injection,Int. J. Refrig, 24(2001),6, PP. 577-587.
  13. Winandy,E., Lebrun, J., Scroll compressors using gas and liquid injection: experimental analysis and modeling, Int. J. Refrig, 25(2002),8, PP.1143-1156.
  14. Cho, H. T., Chung, J., et al., Influence of liquid refrigerant injection on the performance of an inverter-driven scroll compressor, Int. J. Refrig,26(2003),1, PP. 87-94.
  15. Navarro, E., Redon, A., et al., Characterization of a vapor injection scroll compressor as a function of low, intermediate and high pressures and temperature conditions, Int. J. Refrig,36(2013),7,PP. 1821-1829.
  16. Zhang, Z.Q., Li, W.Y., et al., A study on electric vehicle heat pump systems in cold climates. Energies, 9(2016), 12, PP. 1-11.
  17. Bell, I., Groll, E., et al., Simulation of a cold climate heat pump furnished with a scroll compressor with multiple injection lines, Proceedings, the 8th International Conference on Compressors and their Systems, City University London,UK, 2013, PP.87-101.
  18. Guo, W., Ji, G.F., et al., R32 compressor for air conditioning and refrigeration applications in China, Proceedings, International Compressor Engineering Conference, Purdue University, USA, 2012,PP.1-8.
  19. Xu, S. X., Ma, G.Y., et al., Experiment study of an enhanced vapor injection refrigeration/heat pump system using R32. International Journal of Thermal Science, 68(2013), 2, PP.103-109.
  20. Xu, X., Hwang, Y., et al., Performance comparison of R410A and R32 in vapor injection cycles. Int. J. Refrig, 36(2013), 3, PP.892-903.
  21. Xu, X., Hwang, Y., Radermacher R. Refrigerant injection for heat pumping/air conditioning systems: literature review and challenges discussions. Int. J. Refrig, 34(2011),2, PP.402-415.