水素燃焼発電サイクル特性に関する研究  [in Japanese] A Study of Performance Characteristics of Hydrogen-Fired Power Generation Cycles  [in Japanese]

A novel power generation cycle is proposed which accepts hydrogen as fuel and uses the steam generated by firing hydrogen as the working fluid. The advantages of the cycle are analyzed by thermodynamic theory. It is demonstrated that when regenerative heating is used both for the topping cycle and for the bottoming cycle, it may be more effective than when it is used only for the bottoming cycle. The performance characteristics of the cycle are investigated. The effects of various parameters, such as the entrance temperature of the steam for cooling the combustor, the discharge temperature of the combustor, the low pressure, and the main steam pressure, on the cycle efficiency are clarified. The results show that the topping temperature and the entrance temperature of the cooling steam for the combustor have a great effect on the efficiency. It is indicated that the entrance temperature of the cooling steam for the combustor should be as high as possible to improve the cycle efficiency. The low pressure is an important factor for the optimization of the cycle. It is indicated that the maximum efficiency of the cycle can reach as high as 64.80% based on HHV at a combustor the discharge temperature of 1700℃.