Design of humidifier test system for proton exchange membrane fuel cell

Abstract

Humidifiers are often used in the system of fuel cells to ensure the continuous and stable working operation. In order to evaluate the performance of the same humidifier under different operating conditions, this paper proposes a test system for proton exchange membrane fuel cell humidifier (PEMFC). In this paper, the study factor is gas flow rate. During the test process, the system simulates the working condition of the humidifier in the fuel cell system, and measures the dry-and-wet bulb temperature and the pressure flow at the outlet of the dry side of the humidifier with different gas flow rate. Finally, calculated relative humidity, determines the water permeability of the humidifier membrane. And the main factors affecting the humidification effect of the humidifier was analysed. According to the test results, compared with the relative mass transfer time, heat transfer has more effect on the humidification effect.