光伏发电制氢储能系统仿真及性能分析研究

Development of Photovoltaic-Electrolyzer-Fuel Cell System for Hydrogen Production and Power Generation

本文构建了包括光伏发电设备、电解池、高压氢储罐以及燃料电池在内的光伏发电制氢储能系统仿真模型,并对系统内部气液两相传输以及能量传输效率进行了预测和分析。结果显示,随电流密度增加,电解池电极内液态水和氧气饱和度分别呈下降和上升趋势,最后趋于平衡。系统的发电量随光照辐射强度增加和环境温度下降而提高,太阳能整体利用效率在2%~4%之间。最后,以天津地区的气象参数为例,计算了系统的储氢量、发电量和能量转换效率。

In this paper, a renewable energy utilization model including photovoltaic module, electrolyzer module, hydrogen storage module, and fuel cell module, is developed to simulate the performance of the system for hydrogen production and power generation, and the gas-liquid two-phase transmission and energy transmission efficiency of the system are predicted and analyzed. The results show that with the increase of current density, the saturation of liquid water and oxygen in the electrode drops and climbs respectively, and finally tends to balance. In addition, the power generation of the system rises with the increase of solar radiation intensity and the decrease of environmental temperature, and the overall utilization efficiency of solar energy is between 2% and 4%.Finally, the feasibility and benefits of the system in Tianjin area are studied, which is combined with the meteorological conditions in the area such as daily solar radiation and average temperature.