Abstract
The aim of this paper is to investigate the possibility of using an R-134a heat pump system with a conventional air-conditioning system for zero-emission vehicles. A heat pump system is one solution to heating the cabin and defrosting the windshield while consuming little energy. The system components consist of an internal heat exchanger, external heat exchanger, electrically driven compressor, electric expansion valve, and refrigerant flow change valves. Cooling capacity was examined by varying vehicle driving conditions and the compressor’s rotational speed. Heating performance for the heat pump system was investigated with various outside air temperatures and compressor rotational speeds. The experimental results using a heat pump system could provide thermal comfort in the cabin with smaller energy consumption than a direct electrical heating system. Heating capacity and air discharge temperature are up to 4.9 kW and 41.7°C, respectively, at an outside air temperature of 0°C and 7000 rpm compressor rotational speed. The power consumption of the heat pump system is about one third that of the electric PTC heating system at the same heating capacity.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
