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.

摘要：The formation and evolution laws of the defect temperature field,heat dissipation in the process of defect evolution were *** the basis,the formation and evolution laws of the defect temperature field were investigated,the interaction among defects in the process of defect evolution was carried *** numerical simulation of the temperature field of ABS was *** results show that the process of defect evolution is one of energy dissipation,in which the defect temperature field forms due to that its heat dissipation possesses fractal property and its fractal dimension not only relates to the interaction among the defects,but also is the function of time,this incarnates the efficiency of coordinated actions of striding over the different gradations in the process of defect evolution and among *** increase of the local temperature with the increase of deformation-induced heating effect in ABS is ***,the shape of plastic zone and inner heat source density function has big effect on the temperature field.

摘要：Considering two characteristics of compact heat dissipation room and high heat flux, a novel miniature capillary pumped loop (MCPL) for electronics cooling was proposed. MCPL consists of evaporator, condenser, vapor and liquid line dissipates heat by boiling and condensation of working fluids with no extra power consumption. Working fluid circulation is ensured by vapor pressure and capillary head. Saturated wick screens vapor and liquid, and ensures one-way flow of working fluid with no extra valve. In order to promote heat dissipation capacity of MCPL, the intensified boiling and condensation structures are embedded into evaporator and condenser respectively, which are useful to increasing boiling and condensation efficiency. Startup and run characteristics are tested by experiments in the condition of different power inputs and working fluids. MCPL is capable of dissipating 80 W of thermal energy and keeping the bottom substrate temperature of evaporator at 80 ℃.

摘要：With the support by the National Natural Science Foundation of China,the research team led by *** Ning(魏宁)and *** Junhua(赵军华)at the Northwest A&F University and Jiangnan University,respectively,explored the thermal dissipation properties of tailored graphene nanoribbon。