THERMAL SCIENCE
International Scientific Journal
STUDY ON QUASI TWO-STAGE COMPRESSION CYCLE CHARACTERISTICS OF THE WATER HEATER OF THE AIR SOURCE HEAT PUMP IN COLD AREA
ABSTRACT
The water heater of an air source heat pump has the disadvantages of high exhaust temperature and weak heating performance in a cold area. The quasi two-stage compression cycle technology can effectively improve its operation characteristics in the cold area. In this paper, a rotor compressor with a medium pressure air supply is used to develop the water heater with R410A as the circulating working fluid. The system's heating performance under low temperature environments is experimentally studied. The results show that the exhaust temperature of the water heater system with the medium pressure air supply is lower than those without the air-supply system.
KEYWORDS
PAPER SUBMITTED: 2020-09-27
PAPER REVISED: 2021-03-03
PAPER ACCEPTED: 2021-03-03
PUBLISHED ONLINE: 2022-07-16
THERMAL SCIENCE YEAR
2022, VOLUME
26, ISSUE
Issue 3, PAGES [2645 - 2651]
- Zhang, Z. Y., et al., The Solutions to Electric Vehicle Air Conditioning Systems: A Review, Renewable and Sustainable Energy Reviews, 91 (2018), Aug., pp. 443-463
- Kim, K. Y., et al., Experimental Studies on the Heating Performance of the PTC Heater and Heat Pump Combined System in Fuel Cells and Electric Vehicles, International Journal of Automotive Technology, 13 (2012), 6, pp. 971-977
- Wang, D. D., et al., Heating Performance Characteristics of CO2 Heat Pump System for Electrical Vehi-cle in a Cold Climate, International Journal of Refrigeration, 85 (2018), Jan., pp. 27-41
- Wang, F. H., et al., Research Progress and Prospect of Air Source Heat Pump in Low Temperature Envi-ronment (in Chinese), Journal of Refrigeration, 34 (2013), 5, pp. 47-54
- Ma, G., Zhao, H., Experimental Study of a Heat Pump System with Flash-Tank Coupled with Scroll Compressor, Energy and Buildings, 40 (2008), 5, pp. 697-701
- Heo, J., et al., Effects of Flash Tank Vapor Injection on the Heating Performance of an Inverter-Drivenheat Pump for Cold Regions, International Journal of Refrigeration, 33 (2010), 4, pp. 848-855
- Roh, C. W., Kim, M. S., Effects of Intermediate Pressure on the Heating Performance of a Heat Pump System Using R410A Vapor-Injection Technique, International Journal of Refrigeration, 34 (2011), 8, pp. 1911-1921
- Dutta, A. K., et al., An Investigation of the Performance of a Scroll Compressor Under Liquid Refriger-ant injection, Int. J. Refrigeration, 24 (2001), 6, pp. 577-587
- Liu, C. C., et al., Performance Evaluation of Propane Heat Pump System for Electric Vehicle in Cold Climate, International Journal of Refrigeration, 95 (2018), Nov., pp. 51-60
- Qin, F., et al., Experimental Investigation on Heating Performance of Heat Pump for Electric Vehicles in Low Ambient Temperature, Energy Procedia, 61 (2014), Dec., pp. 726-729
- Qin, F., et al., Experimental invEstigation On Heating Performance of Heat Pump for Electric Vehicles at -20 ℃ Ambient Temperature, Energy Convers Manag, 102 (2015), Sept., pp. 39-49
- Tang, J. C., et al., Experimental Study on Performance of Heat Pump Cycle of Quasi Two-stage Com-pression for Electric Vehicle Air-conditioning with Scroll Compressor (in Chinese), International Jour-nal of Refrigeration, 39 (2018), 1, pp. 34-39
- Ou, J. Y., et al., Variable Flow Characteristic Analysis of R417A Enhanced Vapor Injection Heat Pump in Low Temperature (in Chinese), Fluid Machinery, 44 (2016), 9, pp. 82-87
- He, Y., He, H. B., A Novel Numerical Method for Heat Equation, Thermal Science, 20 (2016), 3, pp. 1018-1021
