摘 要
熱電除濕器(Thermoelectric dehumidifier)，由於具有無振動噪音、可靠度高，適用於小空間且對環境無污染等優點，目前已廣泛被應用於消費性產品、精密儀器、醫療器材及軍事武器上。
本文針對熱電除濕之散熱片作熱傳分析，將熱端散熱平板假設成對稱兩片單鰭片，先以一維單鰭片散熱理論分析作基礎，求得散熱片散熱能力的特徵，並求出最佳化的鰭片尺寸。在多鰭片之散熱方面，也利用鰭片間各流動場之相似性，取單一流場(subchannel flow)來作較詳細之分析，求取在自然對流與強制對流下其熱傳之最佳化，以此來推展至多鰭片的散熱問題。
在實驗中我們試著改變各種參數: 輸入能量、熱端散熱平板尺寸(長、高、厚)與材質、散熱鰭片間距、鋁質平板表面陽極處理、平板表面平鋪吸水棉，以期找出可增加除濕速率的最佳方法，並且與理論進行比較。
在相同的熱電晶片下，經本研究作熱傳改良的比市售的除濕器在除濕能力上有甚大的增強，其性能係數大約從0.06提昇升至0.214。

Abstract
Thermoeletric dehumidifier has the advantage of being noiseless, reliable, and environmentally benign, It is widely used in commercial products, such as appliances, precision instruments, medical and military facilities.
In this study, the efforts were focused on the analysis of heat transfer sink. The vertical plate which releases heat to ambient was assumed as two symmetrical single fins. The one-dimension heat transfer theory was adopted to calculate the single-fin characteristics and the optimized thickness. In the analysis of multiple fins, the subchannel flow was considered to obtain the detailed flow characteristic from which the optimal fin gap was determined.
In the tests, many parameters were varied including the input power, the dimension and material of hot plate, the gap between fins. The plate surface was also anodized to increase emissive heat and the spread of the wetted cotton to enhance the heat release. The effect of each improvement was analyzed and presented in this study.
Using the same thermoelectric cell, the COP can be increased from 0.06(original value) up to 0.214 after the optimized fins were placed on the cold (inner) plate, and the hot plate was properly modified.

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