TY - JOUR
T1 - Experimental Study on Performance Characteristics of the Triple Fluids Heat Exchanger with Two Kinds of Coolants in Electric-driven Air Conditioning System for Fuel Cell Electric Vehicles
AU - Lee, Ho Seong
AU - Won, Jong Phil
AU - Lim, Taek Kyu
AU - Jeon, Han Byeol
AU - Cho, Kyu Chang
AU - Park, Youn Cheol
AU - Kim, Yong Chan
N1 - Funding Information:
This work was supported by a grant both "Development of 3.5 kW heat pump system and components for the electric vehicle and high efficient operating technologies under low temperature (20142020104520)" and "Development of 10,000 W capacity all-electric driven refrigeration unit for transport (20142010102660)" from the Korea Institute of Energy Technology Evaluation and Planning.
Publisher Copyright:
© 2017 The Authors. Published by Elsevier Ltd.
PY - 2017
Y1 - 2017
N2 - The objective of this study was to investigate performance characteristics of the triple fluids heat exchanger with two kinds of coolants, such as stack cooling and electric device's cooling, and study control logic of electric-driven air conditioning system for improving energy efficiency for a fuel cell electric vehicle. Tested triple fluids heat exchanger to transfer heat between a refrigerant and two kinds of coolants, stack cooling side with 35% portion and electric device cooling side with 65.0% portion of whole area, was developed to use coolant sources along with operating conditions due to different temperature ranges in a fuel cell electric vehicle. In order to analyze performance characteristics of the triple fluids heat exchanger with respect to heat transfer portion and pressure drop, electric-driven air conditioning system was installed and tested under various operating conditions for coolants, such as temperature and volume flow rate. In addition, since developed heat exchanger was used in the air conditioning system for a fuel cell vehicle, air conditioning system's performance characteristics in terms of cooling capacity and coefficient of performance (COP) was analyzed. Performance characteristics of developed heat exchanger were affected more by the refrigerant flow rate which reflected various system operating conditions, such as ambient temperature and compressor speed, than coolant's operating conditions. For the developed triple fluids heat exchanger, heat transfer rate varied from 4.5 to 8.0 kW to have cooling capacity with 5.5 kW and COP with 2.3 under the normal operating condition. Additionally, coolant-side pressure drop was more affected by coolant volume flow rate than that by coolant temperature. Heat transfer portion varied along with coolants' operating conditions due to heat transfer area difference. As a result of various tests and database, the control logic of tested system under the ambient conditions was studied.
AB - The objective of this study was to investigate performance characteristics of the triple fluids heat exchanger with two kinds of coolants, such as stack cooling and electric device's cooling, and study control logic of electric-driven air conditioning system for improving energy efficiency for a fuel cell electric vehicle. Tested triple fluids heat exchanger to transfer heat between a refrigerant and two kinds of coolants, stack cooling side with 35% portion and electric device cooling side with 65.0% portion of whole area, was developed to use coolant sources along with operating conditions due to different temperature ranges in a fuel cell electric vehicle. In order to analyze performance characteristics of the triple fluids heat exchanger with respect to heat transfer portion and pressure drop, electric-driven air conditioning system was installed and tested under various operating conditions for coolants, such as temperature and volume flow rate. In addition, since developed heat exchanger was used in the air conditioning system for a fuel cell vehicle, air conditioning system's performance characteristics in terms of cooling capacity and coefficient of performance (COP) was analyzed. Performance characteristics of developed heat exchanger were affected more by the refrigerant flow rate which reflected various system operating conditions, such as ambient temperature and compressor speed, than coolant's operating conditions. For the developed triple fluids heat exchanger, heat transfer rate varied from 4.5 to 8.0 kW to have cooling capacity with 5.5 kW and COP with 2.3 under the normal operating condition. Additionally, coolant-side pressure drop was more affected by coolant volume flow rate than that by coolant temperature. Heat transfer portion varied along with coolants' operating conditions due to heat transfer area difference. As a result of various tests and database, the control logic of tested system under the ambient conditions was studied.
KW - coolant-sourced air conditioning system
KW - fuel cell electric vehicle
KW - heat transfer portion
KW - stack and electric device's cooling coolant
KW - triple fluids heat exchanger
UR - http://www.scopus.com/inward/record.url?scp=85020723076&partnerID=8YFLogxK
U2 - 10.1016/j.egypro.2017.04.056
DO - 10.1016/j.egypro.2017.04.056
M3 - Conference article
AN - SCOPUS:85020723076
SN - 1876-6102
VL - 113
SP - 209
EP - 216
JO - Energy Procedia
JF - Energy Procedia
T2 - International Scientific Conference Environmental and Climate Technologies, CONECT 2016
Y2 - 12 October 2016 through 14 October 2016
ER -
