Waste Heat Recovery of the Fuel Cell Systems

由于有效载荷和续航里程的要求，目前的电池技术对于重型车辆应用有一些限制。氢和燃料电池似乎是一个可行的选择，支持“英国氢战略”，以实现净零碳的这种应用。燃料电池使用氢气并按需产生电力，但通过散热会产生能量损失。这种能量可以回收用于生产有用的电力。这对于燃料电池范围为几百千瓦的大型车辆尤其重要，其中小百分比的废热回收（WHR）将产生大量的有用能量。然而，来自燃料电池的WHR将有其自身的挑战，例如回收低品位废热。因此，这旨在通过废热回收来提高燃料电池技术的效率。目标将包括：-开发燃料电池系统的验证模型-使用燃料电池的验证模型对选定的案例研究车辆进行动力系统设计-为选定的案例研究车辆设计和集成不同的WHR选项-根据燃料电池、WHR和车辆性能参数优化总效率

Due to the payload and range requirements, current battery technology have some limitations for heavy-duty vehicle applications. Hydrogen and fuel cells seem a viable option supported by "UK Hydrogen Strategy" in achieving Net-Zero carbon for such applications. Fuel cells use hydrogen and produce on-demand electricity, but energy loss is involved through the heat dissipation. This energy can be recovered for producing useful power. It is especially important for large vehicles with fuel cell range of a few hundred kW where small percentages of waste heat recovery (WHR) will make a significant amount of useful energy. However, WHR from fuel cells will have its own challenges such as recovering the low-grade waste heat. Therefore, this aims to increase the efficiency of the fuel cell technology through waste heat recovery. Objectives will involve:- Developing a validated model of the fuel cell system- Powertrain design of the selected case study vehicles using the validate model of the fuel cell- Design and integration of different WHR options for the selected case study vehicles- Optimisation of the total efficiency with respect to the fuel cell, WHR and vehicle performance parameters