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.
出处
《热科学与技术》
CAS
CSCD
北大核心
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)
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
finite time thermodynamics
irreversible closed Brayton cycle
combined cooling heating and power（CCHP）generation plant
exergy performance
