Cold-start performance investigation of fuel cell electric vehicles with heat pump-assisted thermal management systems

Soohwan Kim, Hoyoung Jeong and Hoseong Lee

Energy, 2021, vol. 232, issue C

Abstract: In this study, the cold-start performance of fuel cell (FC) electric vehicles was investigated via integration of a heat pump system with a thermal management system (TMS). A model for the proposed heat pump-assisted TMS and FC stack was developed using experimental data. On the basis of the validated model, the potential of the heat pump-assisted TMS was comprehensively evaluated from the standpoint of three critical factors: air velocity, compressor speed, and coolant volume flow rate (VFR). Consequently, it was observed that the cold-start performance can be maximized in the case of a large coolant VFR, high compressor speed, and air velocity above 0.96 m s−1. Among the three variables, the most dominant was the coolant VFR, followed by the air velocity. When the compressor speed, air velocity, and coolant VFR were optimized, the cold-start time and total energy consumption of the heat pump-assisted TMS could be reduced by 29.9 and 11.3%, respectively, when compared to those of the baseline TMS during the cold-start period. In addition, an increase in the ambient temperature improved cold-start performance with the heat pump-assisted TMS.

Keywords: Cold-start; Automotive thermal management system; Heat pump system; Fuel cell electric vehicle (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (8)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:232:y:2021:i:c:s0360544221012494

DOI: 10.1016/j.energy.2021.121001

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