cpu集成热管散热器的研究-工程热物理专业毕业论文.docx

大连理工大学硕士学位论文
Investigation on Integrated Heat Sink with Heat Pipes
Abstract
With the increase in integral density and performance and the decrease in size for CPU,heat flux is critically the conventional solution of forced-air convection heat transfer is trending to its limit due to a confined sDace in the PC and heat dissipation of CPU has e one main restrict factor in the development of CPU and an important isle to investigate in the field ofhydrodynamics and heat a two—phase heat transfer device,heat pipe call transport a considerate quantity of heat、jl,inl a very small temperature difference from evaporation section to condensing section,SO heat pipe is widely applied to the field of high heat flux due to its intrinsic merits such as superior
conductivity,surface temperature uniformity,high efficiency of heat transfer pact and adaptable structure, change heat-transfer devices such as heat
sink wi也heat pipe and heat sink ofvapor chamber have developed to cooling CPU.
A conceDt of integrated heat sink with heat pipes iS presented to meet the demand ofhi曲dissipation power on the basic of an integrated introduction of investigation and development for heat dissipation technologies,vapor chamber and conventional heat sinks with heat pipes for cooling CPU in the operating principle of heat pipe
is also introduced to the working condition of CPU,an experimental system iS established to test heat transfer performance of integrated heat sink with heat
pipes including thermal resistance and surface temperature paring the experimental results for different working conditions of heat dissip·ation velocities and inclination angles is to determine the surface temperature variety of of CFD numerical simulation iS employed to replace experimental mercial software iS used to simulate the outer flow field and heat transfer performance ofintegrated heat sink wim hea