Heating performance evaluation of a CO2 heat pump system for an electrical vehicle at cold ambient temperatures

2018 ◽  
Vol 142 ◽  
pp. 656-664 ◽  
Author(s):  
Dandong Wang ◽  
Binbin Yu ◽  
Wanyong Li ◽  
Junye Shi ◽  
Jiangping Chen
Keyword(s):  
Performance Evaluation ◽  
Heat Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Ambient Temperatures ◽  
Heating Performance ◽  
Electrical Vehicle

Performance evaluation of propane heat pump system for electric vehicle in cold climate

2018 ◽  
Vol 95 ◽  
pp. 51-60 ◽  
Author(s):  
Cichong Liu ◽  
Yun Zhang ◽  
Tianyuan Gao ◽  
Junye Shi ◽  
Jiangping Chen ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Electric Vehicle ◽  
Heat Pump ◽  
Cold Climate ◽  
Pump System ◽  
Heat Pump System

Experimental Investigation on Heating Performance of Newly Designed Air Source Heat Pump System for Electric Vehicles

2020 ◽  
Vol 13 (2) ◽  
Author(s):  
Kang Li ◽  
Jun Yu ◽  
Rong Yu ◽  
Lin Su ◽  
Yidong Fang ◽  
...  
Keyword(s):  
Heat Pump ◽  
Electric Vehicles ◽  
Flow Characteristics ◽  
Cold Climate ◽  
Positive Temperature ◽  
Pump System ◽  
Cooling Performance ◽  
Heat Pump System ◽  
Heating Performance ◽  
Driving Range

Abstract Utilizing the heat from air source with heat pump system in electric vehicles shows a significant advantage from thermoelectric heat source for heat supply in cold climate. It could improve the driving range of electric vehicles considerably in winter and replace the positive temperature coefficient (PTC) heater with an acceptable cost and reliability. In this work, a newly designed heat pump system was first introduced with less components and cost. Second, experiments were conducted to investigate its cooling performance, and subsequent heating performance from −10 to 10 °C. The typical heat transfer and flow characteristics of refrigerant were recorded, and the behavior of each component including compressor, evaporator, condenser, and outside heat exchanger were analyzed and interpreted. The results showed that the heating and cooling performance of the new heat pump system could almost remain the same with traditional air-conditioning system in automobile and surely satisfy with the heat requirement of electric vehicles. In the heating mode, the maximum heating capacity increases by 13% at 400 m3/h air volume from 300 m3/h at the ambient temperature −10 °C, while the outlet air temperature decreases by 4–6%. In addition, using a heat pump system showed an increase in the driving range of electric vehicles by 25–31% as compared to PTC heaters.

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