ABSTRACT
A heat pipe is a high-performance heat transmission device with an extremely high thermal conductivity, which strongly depends on capillarity induced flow in the mini-and microchannels. There are many variants of heat pipes, but in all cases the working fluid must circulate, when temperature difference exists between the evaporator and the condenser, and capillary forces play a governing role in this circulation. In this chapter, we discuss the concept of fluid flow and heat transfer with the phase change in microscale, which is the novel cooling strategy for the devices requiring successful thermal management.
