質子交換膜燃料電池系統動態模擬及設計研究

Abstract

本文針對質子交換膜燃料電池系統，以控制體積分析法為基礎，將系統依各元件劃分為不同的控制體積，並對每個區域作質量、能量、與動量守恆分析，建立一套理論模式，並以此模型計算以燃料電池冷卻水或電熱片對儲氫瓶作熱偶合時，系統各區域之瞬時溫度、質量與壓力的動態反應，並比較此兩種熱偶合策略對系統效能的影響。文中並對自製燃料電池組進行基本性能的測試。

The focus of this paper is to develop a mathematical model for investigating the dynamic behavior of a thermally coupled hydrogen storage and PEM fuel cell system. The model in this work is based on control volume analysis and can easily be used to set up different operational strategies. Two specific situations were studies: in the first scenario, the fuel cell and high pressure vessel were thermally coupled; in the second scenario, the high pressure vessel and a radiator were thermally coupled. The system efficiency and dynamic behavior of these two strategies will be clearly compared. Besides, in order to establish a 5kW PEMFC stack, a two cells stack with 196cm2 reactive area was assembled and tested for further designing.