電子零件或化學材料長期處於高溫的環境下，其零件運作夀命及機台內化學材料之平衡穩定將會受到影響。目前於實際散熱應用上，大部份以氣冷及水冷較為普遍，搭配散熱鰭片增加其散熱面積做為散熱方式也相當常用。本文希望經由散熱鰭片之較多表面積特性，運用在水冷系統上，以期待能幫助機台內部積熱之散熱。本研究分為四個主題來做探討：(1) 自製水冷散熱系統對冷卻水溫及水冷散熱器高度位置子對散熱效益的影響力比較；(2) 搭配不同的水冷散熱模組(外購與自製)，比較其散熱效益；(3) 強制風扇氣冷與水冷散熱模組搭配風扇之散熱效益比較；(4) 移動熱源的散熱效益實驗。
本研究結果發現，各控制因子對散熱效益的影響力順序為：水冷機構+風扇＞氣冷(挖洞+風扇)＞水冷機構。比較其相同條件下，對於水冷機構加入風扇之熱阻值比沒有風扇作用之下熱阻值，其差異約1倍；若是比較機殼內空間溫度差異，在風扇作用下，其機殼內空間溫度差異可降低6倍之多。其差異在於散熱過程中，因鰭片表面有冷凝水滴附著，造成散熱不良，如果加裝風扇，可以有效清除鰭片表面水滴，並增加空間之熱對流。另外，熱源之移動與否之差異，在相同散熱條件下，其對於散熱效益之差異並無明顯的影響。

When electronic components or chemical materials are subjected to a high temperature environment for a long period of time, the operation lives of the components and the balance stability of the chemical materials inside a working machine will be affected. Currently, the air or water cooling is commonly used in the practical application of heat dissipation. Fins, which can increase the cooling area, are often utilized to raise the heat-dissipation efficient of these two cooling methods. In this thesis, water cooling with fins is used to transfer the heat accumulated in a working machine and the heat-dissipating performance is evaluated.
In this work, an experimental model is built, which is a close system of cuboid shape. A heater, which is used to simulate the heat source, is fixed on or moved up and down repeatedly along an internal vertical surface of the cuboid. Four primary subjects are studied: (1) the comparison of heat-dissipating performances for different inlet water temperatures and heights of homemade water cooling module, (2) the comparison of heat-dissipating performances for homemade and bought water cooling modules, (3) the comparison of heat-dissipating performances for the water cooling module with electrical fans installed on the vertical surface of the cuboid or a fan on the module, (4) Evaluation of heat-dissipating performances for a heater moving up and down repeatedly.
From the evaluation results of the heat-dissipating performance, it can be found that the cooling module with a fan on it is the best, the cooling module with fans installed on the vertical surface of the cuboid is the second best and the cooling module alone is the worst. Under the same working conditions, the thermal resistance of the best one is one half of that for the worst one and the best one is six times the decrease in air temperature of the cuboid of the worst one. In the heat-dissipation process, the condensed water is attached to the fins, which hinders the heat transfer in the worst one. The condensed water can be removed by the fan installed on the module so that the best one has the highest performance. With the same working conditions, the performance of the fixed heater is almost the same as that of the moving heater.

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