By analyzing and deducing the factors influencing its structure,strength and heat transfer limits,this paper was to establish the heat transfer models of circular micro heat pipe with a rectangle-grooved wick structure,including the models of viscous limit,sonic limit,entrainment limit,capillary limit,condensing limit,boiling limit,continuous flow limit and frozen startup limit.

With the increasing demand for the cooling of electronic chips,the micro heat pipe with the sintered wick has become an ideal heat radiator.

Applications of micro heat pipes in electronics cooling;

Miniature/micro heat pipes have been widely used in a variety of advanced miniature thermal devices,such as spacecraft thermo control system and microelectronic cooling system.

The current status and development of micro heat pipe technique;

This paper introduces the working principle and temperature measuring of micro heat pipes, including the electric circuit of the measure equipments, the main peripheral extending electric circuit of the DSP and the core software modules.

The evaporation model of micro heat pipe with triangular cross section was presented by analyzing both the heat transfer through the thin liquid film and the heat conduction along the heat pipe wall.

This paper summarizes the recent research process of the preparation,thermal conductivity,convective and boiling heat transfer of nanofluids and also introduces the application of nanofluids to microchannel heat exchangers.