湿空气透平循环饱和器水温控制建模分析

Modeling and Analysis of Water Temperature Control of Saturator of Humid Air Turbine Cycle

湿空气透平(Humid air turbine,HAT)循环是当今最先进的燃气轮机循环之一,饱和器水温控制是HAT循环一种通过改变饱和器给水量维持进口水温的控制逻辑。基于上海交通大学HAT循环实验台建立HAT循环模型,分析饱和器水温控制对HAT循环系统稳态和动态性能的影响。仿真结果表明,饱和器水温控制可以提高系统变工况运行的效率。对于研究对象,系统效率在75%工况条件下提高0.071%。此外饱和器水温控制可以使得饱和器更快达到稳定,但对HAT循环系统功率调节特性的影响较小。

Humid air turbine(HAT)cycle is one of the most advanced gas turbine cycles.Saturator water temperature control is a control strategy that adjusts the water flow rate to keep the outlet temperature at the designed value.A HAT cycle model based on the HAT cycle test rig of Shanghai Jiao Tong University is built to analyze the influence of water temperature control on both steady-state and dynamic performance of HAT cycle system.The simulation results show that system efficiency increases by 0.071%for the study object on 75%load.The dynamic response of output power changes little,while the saturator can achieve stable faster.