Efficient waste heat utilization in high-temperature proton exchange membrane fuel cell bus through integration of lithium bromide absorption refrigeration
Ke Song,
Zhen Cai,
Xing Huang,
Haoran Ma,
Yanju Li,
Pengyu Huang,
Boqiang Zhang
Affiliations
Ke Song
School of Automotive Studies, Tongji University, Shanghai, 201804, China; National Fuel Cell Vehicle and Powertrain System Engineering Research Center, Tongji University, Shanghai, 201804, China; Corresponding author. School of Automotive Studies, Tongji University, Shanghai, 201804, China.
Zhen Cai
School of Automotive Studies, Tongji University, Shanghai, 201804, China; National Fuel Cell Vehicle and Powertrain System Engineering Research Center, Tongji University, Shanghai, 201804, China
Xing Huang
School of Automotive Studies, Tongji University, Shanghai, 201804, China; National Fuel Cell Vehicle and Powertrain System Engineering Research Center, Tongji University, Shanghai, 201804, China
Haoran Ma
School of Automotive Studies, Tongji University, Shanghai, 201804, China; National Fuel Cell Vehicle and Powertrain System Engineering Research Center, Tongji University, Shanghai, 201804, China
Yanju Li
School of Automotive Studies, Tongji University, Shanghai, 201804, China; National Fuel Cell Vehicle and Powertrain System Engineering Research Center, Tongji University, Shanghai, 201804, China
Pengyu Huang
School of Automotive Studies, Tongji University, Shanghai, 201804, China; National Fuel Cell Vehicle and Powertrain System Engineering Research Center, Tongji University, Shanghai, 201804, China
Boqiang Zhang
School of Mechanical and Electrical Engineering, Henan University of Technology, Zhengzhou, 450007, China
Compression-type air-conditioning heat pump systems used in high-temperature proton exchange membrane fuel cell (HT-PEMFC) buses significantly increase the vehicle's hydrogen consumption. This study introduces a lithium bromide (LiBr) absorption refrigeration air-conditioning system into a fuel cell bus, aiming to convert the high-quality waste heat produced by the HT-PEMFC into cooling and heating capabilities for balancing the temperature within the vehicle cabin and recover waste heat. Modeling and co-simulation of the HT-PEMFC, LiBr absorption refrigeration system, vehicle thermal model, and compression-type air-conditioning heat pump system were conducted using MATLAB/Simulink. The simulation results indicate that, compared with the traditional compression-type air-conditioning heat pump system, the LiBr absorption refrigeration system can save 6.13–18.17 % of hydrogen and improve the electrical energy and exergy efficiencies by 3.58–10.74 % and 3.74–11.22 %, respectively, under different driving scenarios. Using the LiBr absorption refrigeration system significantly enhances the vehicle's overall fuel utilization efficiency and driving range.
