高炉余能余热驱动ICR Brayton CHP装置的经济性能建模与计算分析

Exergoeconomic Performance of an ICR Brayton CHP Plant Driven by Residual Energy and Heat of Blast Furnace Modeling and Calculation Analysis

采用有限时间热力学理论,建立了高炉余能余热驱动的变温热源内可逆中冷回热(ICR)布雷顿热电联产(CHP)装置模型,以利润率和效率为目标函数,应用有限时间经济分析法研究了装置的性能。通过数值计算分析了装置的一般性能和最优性能,求出了最优利润率和最优效率时的中间压比分配,分析了中冷度、回热度、供热温度等设计参数对装置性能的影响。

Adopting finite time thermodynamics, a variable-temperature heat reservoirs endoreversible intercooled regenerative （ICR） Brayton combined heat and power （CHP） plant driven by residual energy and heat of blast furnace is established. Profit rate and exergy efficiency are taken as the objective function, and the performances of the plant are investigated using finite time exergoeconomic analysis. By detailed numerical examples, the general and optimal performances are analyzed, and the intercooling pressure ratio distributions corresponding to the optimal profit rate and optimal exergy efficiency are obtained. The effects of the design parameters （such as intercooling degree, regeneration degree, heat supply temperature, et al. ） on the performances of the plant are analyzed.