尺寸對平板型熱管熱性能之影響

The Influence of Size on the Thermal Performance of Flat Plate Heat Pipe

何建毅(Chien-I Ho)

指導教授 ： 邱六合

大同大學/工程學院/材料工程學系所/碩士(2006年)

摘要

本實驗主要是探討燒結式平板型熱管之尺寸效應對散熱模組性能影響。設計三種尺寸之平板型熱管搭配散熱模組進行相互比較，實驗結果顯示，尺寸效應對散熱模組性能之影響，以平板型熱管受熱面積(蒸發端)做探討，發現大型(8370 mm2)比小型(2773 mm2)之平板型熱管有較低熱阻值。但是平板型熱管之冷凝端有局部區域沒有與散熱模組接觸時，不能有效、迅速帶走熱量會有熱量累積的現象產生，熱阻值增加。選用適當的散熱鰭片搭配風扇，有助於提升整個平板型熱管散熱模組之散熱性能。並探討使用不同製程方式之銅粉，對於燒結成的毛細結構應用在平板型熱管中熱傳性能之比較。氣霧粉(GA)、水霧粉(WA)、氧化還原粉(OR)三種銅粉燒結成的平板型熱管，以燒結氣霧粉(GA)所製備成的毛細結構搭配散熱模組有較低熱阻值，較佳的散熱性能。

關鍵字

平板型熱管 ； 熱阻值 ； 毛細結構

並列摘要

The influence of size on the thermal performance of flat plate heat pipe has been studied. Three flat plate heat pipes in different size was chosen to match the size of heat sink and compared each other. The heating area (evaporator section) of flat plate heat pipe (FPHP) made the discussion, the experimental results show the thermal resistance value of large-size (8370 mm2) less than that of small-size (2773 mm2). When some area of condenser section of flat plate heat pipe did not contact heat sink, the heat can’t be take the away effectively. For the sake of heat accumulation, the thermal resistance of heat sink module was increased; therefore, the size of heat sink should be carefully chosen to match the heat dissipation performance of flat plate heat pipe. Three copper powders, the gas-atomized copper powder (GA), water-atomized copper powder (WA), oxide reduced copper powder (OR) were used to sintering the wick of FPHP, respectively. The thermal performance of wick structure using GA copper powder is the best among three powders.

並列關鍵字

flat plate heat pipe ； thermal resistance ； wick structure

參考文獻

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