Abstract
An effective thermal spreader can achieve uniform heat flux distribution and thus enhance heat dissipation of heat sinks. Flat plate heat pipe is one of the highly effective thermal spreaders. Magnetic fluid is a special fluid that can be made flow by traveling force of magnetic field. Therefore, the magnetic fluid is suitable for using as the working fluid of flat plate heat pipes that have a very small gap between evaporation and condensation surfaces. In this paper, we prepared a disk-shaped wickless flat plate heat pipe, and the distance between evaporation and condensation surfaces is 1 mm. From experimental study, the effects of heat flux and working fluid ratio on the performance of the flat plate heat pipe are obtained and the working performance of the magnetic fluid is compared with that of the water flat pate heat pipe of the same geometry structure.
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