Abstract
To meet the requirement of electronic heat dissipation with high heat flux, a kind of heat dissipation device using pulsating heat pipe (PHP) for CPU heat dissipation was put forward. The heat transfer performance and surface temperature distribution of the radiator are analyzed by analyzing the wall temperature distribution and the distribution of the evaporator and condenser of the PHP. The experimental results show that the change of wind speed has obvious influence on the operation of the PHP radiator. The surface temperature distribution of the PHP radiator is very uniform, which is especially beneficial for CPU cooling. The heat transfer performance of the PHP is better, and the minimum average thermal resistance is 0.19 k/W. In addition, there is no drying phenomenon when the temperature reaches about 120 °C, which indicates that the pulsating heat pipe has a very high heat transfer limit.
Highlights
With the development of LSI and VLSI, the miniaturization and integration of electronic components make the heat loss per unit area increase significantly
There have been some new type of heat pipe technology
The heat transfer performance and surface temperature distribution of the radiator are analyzed by analyzing the wall temperature distribution and the distribution of the cold and hot sections of the pulsating heat pipe (PHP)
Summary
With the development of LSI and VLSI, the miniaturization and integration of electronic components make the heat loss per unit area increase significantly. PHP [8] is currently applied many new type heat pipes, and there are few in for electronic device cooling research. Considering various factors of CPU heat dissipation, PHP heat dissipation is an efficient passive heat dissipation technology. It has simple structure, low cost, good heat transfer performance, and without additional power [10], it can better meet the needs of today's CPU cooling market [11]. This paper proposes a new heat dissipation technology that applies PHP to CPU heat dissipation to satisfy the current high heat flux electron heat dissipation, and has carried out the experimental study about it.
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