TY - GEN
T1 - Experimental study on heating performance characteristics of coolant heat-sourced heat pump system in a fuel cell electric vehicle
AU - Lee, Hoseong
AU - Won, Jong Phil
AU - Cho, Choongwon
AU - Han, Manseung
AU - Jeong, Sunan
AU - Park, Youn Cheol
AU - Kim, Yongchan
N1 - Funding Information:
This work was supported by the Ministry of Trade, Industry & Energy(MOTIE), Korea Institute for Advancement of Technology(KIAT) through the Automobile Parts Cluster Construction Program for the Environment-Friendly Vehicles(P000200044, Development of Integrated Smart Air-Conditioning System for Electric Commercial Vehicles) and Korea Evaluation Institute of Industrial Technology(KEIT) through the Industrial Technology Innovation Program(10084611, Development of fuel cell cooling system and hydrogen fuel cell electric truck for 4~5 ton commercial vehicle)
Publisher Copyright:
© ECOS 2019 - Proceedings of the 32nd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems. All rights reserved.
PY - 2019
Y1 - 2019
N2 - The objective of this study was to investigate heating performance characteristics of coolant heat-sourced heat pump system in a fuel cell electric vehicle (FCEV). In order to analyse heating performance characteristics of heat pump system with triple fluids heat exchanger between stack cooling coolant and a refrigerant, R-134a, each component in the heat pump system was installed and tested under various operating conditions, such as air inlet temperature of HVAC system and compressor speed. Heating performance of tested system was studied with respect to heating capacity and COP (Coefficient of Performance) after various experiments according to FCEV driving conditions. Because tested system had EXV (Electric Expansion Valve) to control the refrigerant mass flow rate, heating performance was analysed along with EEV opening under certain conditions, such as inlet air temperature and compressor speed. When the air inlet temperature of HVAC system was varied from 0.0℃ to –20.0℃, heating capacity was found to be similar due to somewhat equal temperature difference between inlet and outlet of HVAC system. However, COP increased until certain EEV opening, especially under 45.0%, because of decreasing electric compressor's power consumption. When the compressor speed was varied from 2,000 to 4,000 RPM, while heating capacity increased, COP decreased by higher refrigerant mass flow rate. In the future works, performance characteristics according to stack cooling coolant's operating conditions, such as temperature, coolant volume flow rate, would be analysed with respect to heating capacity, system efficiency, and triple fluid heat exchanger's pressure drop.
AB - The objective of this study was to investigate heating performance characteristics of coolant heat-sourced heat pump system in a fuel cell electric vehicle (FCEV). In order to analyse heating performance characteristics of heat pump system with triple fluids heat exchanger between stack cooling coolant and a refrigerant, R-134a, each component in the heat pump system was installed and tested under various operating conditions, such as air inlet temperature of HVAC system and compressor speed. Heating performance of tested system was studied with respect to heating capacity and COP (Coefficient of Performance) after various experiments according to FCEV driving conditions. Because tested system had EXV (Electric Expansion Valve) to control the refrigerant mass flow rate, heating performance was analysed along with EEV opening under certain conditions, such as inlet air temperature and compressor speed. When the air inlet temperature of HVAC system was varied from 0.0℃ to –20.0℃, heating capacity was found to be similar due to somewhat equal temperature difference between inlet and outlet of HVAC system. However, COP increased until certain EEV opening, especially under 45.0%, because of decreasing electric compressor's power consumption. When the compressor speed was varied from 2,000 to 4,000 RPM, while heating capacity increased, COP decreased by higher refrigerant mass flow rate. In the future works, performance characteristics according to stack cooling coolant's operating conditions, such as temperature, coolant volume flow rate, would be analysed with respect to heating capacity, system efficiency, and triple fluid heat exchanger's pressure drop.
KW - Coolant
KW - Heat pump system
KW - Heating performance
KW - Inner condenser
KW - Triple fluids heat exchanger
UR - http://www.scopus.com/inward/record.url?scp=85079690112&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85079690112
T3 - ECOS 2019 - Proceedings of the 32nd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems
SP - 1267
EP - 1277
BT - ECOS 2019 - Proceedings of the 32nd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems
A2 - Stanek, Wojciech
A2 - Gladysz, Pawel
A2 - Werle, Sebastian
A2 - Adamczyk, Wojciech
PB - Institute of Thermal Technology
T2 - 32nd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2019
Y2 - 23 June 2019 through 28 June 2019
ER -