高炉余能余热驱动的不可逆闭式布雷顿热电冷联产装置火用性能分析  

Exergy performance analysis for irreversible closed Brayton cycle combined cooling , heating and power generation plant driven by residual energy and heat of blast furnace

作　　者：冯辉君[1,2,3] 陈林根[1,2,3] 孙丰瑞[1,2,3] 

机构地区：[1]海军工程大学热科学与动力工程研究室,湖北武汉430033 [2]海军工程大学舰船动力工程军队重点实验室,武汉430033 [3]海军工程大学动力工程学院,湖北武汉430033

出　　处：《热科学与技术》2013年第2期180-188,共9页Journal of Thermal Science and Technology

基　　金：国家重点基础研究发展计划(973)资助项目(2012CB720405);国家自然科学基金资助项目(10905093)

摘　　要：用有限时间热力学理论建立了由一个高炉余能余热驱动的不可逆闭式布雷顿循环和一个内可逆四热源吸收式制冷循环组成的热电冷联产循环模型,导出了其火用输出率和火用效率的表达式。利用数值计算方法,分析了循环各参数对火用输出率和火用效率与压比关系的影响,比较了最大火用输出率和最大火用效率性能,给出了实际热电冷联产装置设计和运行的建议。A combined cooling,heating and power（CCHP）generation plant model composing by one irreversible closed Brayton cycle driven by residual energy and heat of blast furnace and one endoreversible four-heat-reservoir absorption refrigeration cycle was established by using finite time thermodynamics.The expressions of the exergy output rate and exergy efficiency were derived.The effects of the cycle parameters on the characteristics of exergy output rate and exergy efficiency versus pressure ratio were analyzed by using numerical calculations.The performances of the maximum exergy output rate was compared with that of the maximum exergy efficiency and some suggestions on the designs and operations of actual CCHP plants were proposed.

关 键 词：有限时间热力学 不可逆闭式布雷顿循环 热电冷联产装置 火用性能 

分 类 号：TK12[动力工程及工程热物理—工程热物理]