Principle of equipartition of entransy dissipation for heat exchanger design
作者机构：1. Institute of Thermal Science and Technology Shandong University Jinan 250061 China
基 金：supported by the National Basic Research Program of China ("973" Program) (Grant No.2007CB206900)
出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)
年 卷 期：2010年第53卷第5期
页 码：1309-1314页
摘 要：In the present work,a principle of equipartition of entransy dissipation(EoED) for heat exchanger design is established,which says that for a heat exchanger design with given heat duty and heat transfer area,the total entransy dissipation rate reaches the minimum when the local entransy dissipation rate is uniformly distributed along the heat *** the heat transfer coefficient is unfixed,the total entransy dissipation obtained by the EoED principle is less than that obtained by the principle of equipartition of temperature difference(EoTD).Furthermore,the exchanger effectiveness obtained by the EoED principle is larger than that obtained by the EoTD *** the heat transfer coefficient is fixed,the EoED principle is equivalent to the EoTD *** show that the equipartition of entropy production(EoEP) and EoED principles give rise to difference in entropy generation and entransy dissipation for a heat exchanger optimization *** discrepancies are caused by distinct features of entropy production minimization and entransy dissipation minimization principles,the former is to optimize the design of heat exchanger by making the lost available work minimum,while the latter is not involved with heat-work *** is found that the entropy generation number is not suitable for evaluating heat exchanger performance,since it directly depends on the inlet and outlet temperatures of working *** the contrary,the entransy dissipation number is not directly related to the inlet and outlet temperatures of working ***,the entransy dissipation number is more suitable for serving as a criterion to evaluate heat exchanger performance.
主 题 词：heat exchanger entropy production entropy generation number entransy dissipation entransy dissipation number
学科分类：080702[080702] 08[工学] 0807[工学-电子信息类]
核心收录：
D O I：10.1007/s11431-010-0128-y
馆 藏 号：203119248...
