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Investigation on the Influence of Refrigerant Charge Amount on the Cooling Performance of Air Conditioning Heat Pump System for Electric Vehicles
- Source :
- Journal of Thermal Science. 28:294-305
- Publication Year :
- 2019
- Publisher :
- Springer Science and Business Media LLC, 2019.
-
Abstract
- The application of air conditioning heat pump (ACHP) in electric vehicles could lead to significant electrical power saving effect. As for an air conditioning heat pump system for electric vehicles, the influence of refrigerant charge amount should be investigated during the design phase. In this study, experimental method was employed to investigate the influence of the refrigerant charge amount on the performance of the ACHP system. The results showed that the refrigerant charge amount had different influence on the refrigerant properties at various locations within the system. The coefficient of performance and pressure-enthalpy diagram were calculated, and showed a close relationship with refrigerant charge amount under different compressor speeds. The degree of subcooling and the degree of superheating were recorded and the critical charge amount was determined by a typical practical test method. In addition, the critical refrigerant charge amount determined by the experimental method was also compared with two typical void fraction correlation models, and the model with consideration of two phase stream reaction of the refrigerant showed a good estimation accuracy on the critical charge amount.
- Subjects :
- Materials science
business.product_category
business.industry
020209 energy
02 engineering and technology
Mechanics
Coefficient of performance
Condensed Matter Physics
law.invention
Refrigerant
Subcooling
Superheating
020303 mechanical engineering & transports
0203 mechanical engineering
law
Air conditioning
Electric vehicle
0202 electrical engineering, electronic engineering, information engineering
business
Gas compressor
Heat pump
Subjects
Details
- ISSN :
- 1993033X and 10032169
- Volume :
- 28
- Database :
- OpenAIRE
- Journal :
- Journal of Thermal Science
- Accession number :
- edsair.doi...........5c8a8f1a3286c0d9871f1056ab19d6b3