| Summary: | 碩士 === 國立臺灣大學 === 機械工程學研究所 === 97 === The present thesis is a former research to evaluate the feasibility of fabricating a polymer (PDMS) flexible heat pipe. Present research focuses on the capillary performance evaluation of the polymer grooved plate and the thermal performance improvement of polymer material, corresponding experiment thus established. The capillary performance experiment analyzes the varying of axial wetted length by adjusting input power, inclined angle, working fluid, and the shape of flow channel. Results are compared with the algebraic solution of the model developed by G. P. Peterson. The reason of deviation is discussed. The thermal performance experiment analyzes the varying thermal conductivity of the blend material by adjusting conductive filler type, concentration of conductive filler and the material arrangement.
The results of capillary performance experiment indicate that the axial wetted length decreases with the increase of input power and inclined angle. Choose methanol as working fluid and triangular shape as flow channel exhibit the better capillary performance. The algebraic solution developed by G. P. Peterson is one-third of the experiment result in value. The results of thermal performance experiment indicate that filler using CNT powder and copper powder can improve the thermal conductivity of PDMS 5.88 times and 4.98 times respectively. The idea of framework material arrangement improves the thermal conductivity of PDMS 16.52 times by using copper spring coil.
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