高炉余能余热驱动内可逆回热布雷顿循环热电冷联产装置的最优_性能  

Optimal Exergy Performances of An Endoreversible Regenerative Brayton Cycle CCHP Plant Driven by Residual Energy and Heat of Blast Furnace

作　　者：杨博[1] 陈林根[1] 王文华[1] 戈延林[1] 孙丰瑞[1] 

机构地区：[1]海军工程大学动力工程学院,武汉430033

出　　处：《燃气轮机技术》2013年第2期26-33,共8页Gas Turbine Technology

基　　金：国家重点基础研究发展计划(973)项目(2012CB720400);国家自然科学基金(10905093)

摘　　要：应用有限时间热力学理论和方法建立了高炉余能余热驱动恒温热源内可逆闭式回热布雷顿循环热电冷联产装置模型,导出了装置无量纲输出率和效率的解析式。在总热导率一定的条件下,通过数值计算对高、低温侧换热器、热用户侧换热器、回热器、吸收式制冷机发生器、冷凝器、蒸发器和吸收器的热导率分配以及布雷顿热机的压比进行了优化,得到了装置最优的输出率和效率。研究了热电比、冷库温度、供热温度等设计参数对最优性能的影响。An endoreversible closed regenerative Brayton cycle CCHP （combined cooling, heating and power） plant driven by residual energy and heat of blast furnace coupled to constant-temperature heat reservoirs is established using finite time thermodynamics. The analytical formulae about exergy output rate and exergy efficiency are derived. In condition of given total heat conductance, by detailed numerical calculation, the heat conductance distributions among the hot-, cold-, consumer-side heat exchangers, the regenerator, and the generator, condenser, evaporator and absorber of an absorption refrigerator are optimized as well as the pressure ratio of Brayton en- gine, then the optimal exergy output rate and optimal exergy efficiency of the plant are obtained. The influences of design parameters （heat to power ratio, refrigeratory temperature, thermal consumer-side temperature, et al） on the optimal exergy performances are in- vestigated.

关 键 词：有限时间热力学 布雷顿循环热电冷联产装置 (火用)输出率 (火用)效率 压比 热导率分配 优化 

分 类 号：TK12[动力工程及工程热物理—工程热物理]