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  5. 模擬分析形狀與熱傳導係數對生醫合金之熱傳遞影響
 
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模擬分析形狀與熱傳導係數對生醫合金之熱傳遞影響

Other Title
Effects of shape and coefficient of heat conductivity on the heat transfer of biomedical alloy by simulation analysis
Type
thesis
Date Issued
2014-07-23
Author(s)
林文進
Advisor
黃茂栓
Subjects
系所名稱:醫療器材產業碩士專班
Description
學位別:碩士
語文別:英文
指導教授:黃茂栓
共同指導教授:
口試委員:黃瓊芳;劉沖明
中文關鍵字:鈦-鍺合金;熱傳遞;有限有元素分析
Abstract
暖爐因攜帶方便,又可長時間取暖而廣為眾人所喜愛。起初,人們利用燃燒
碳棒、油料或瓦斯氣體等燃料來產生熱能,但是這種方式不但危險,而且持續時
間不長,需頻繁更換燃料,造成許多困擾。 隨著時間的推演,市面上開始出現,
各種新式懷爐。例如俗稱的暖暖包,其利用化學反應,使一袋體內之反應物可在
一段時間內產生熱能,兼具輕便易攜帶、操作容易,及安全等特性,但是暖暖包
通常是拋棄式的,只能使用一次,顯然不符合環保需求。另有一種電熱型懷爐,
其主要是利用電熱體產生熱能,現今之電熱體技術及蓄電技術在使用上無安全疑
慮,且可使電熱型懷爐長時間地、重複地使用,但是懷爐在長期與人體接觸時,
容易產生衛生方面的問題而造成使用者的困擾。因此本研究計劃以生醫純鈦、純
鍺及鈦鍺合金為主軸,探討其應用於暖爐上之熱傳影響。實驗結果發現;比較鈦、
鍺與鈦鍺合金,如果材料有較低的熱傳導,熱將集中在中央。如果想控制分佈在
整個模型用於40°至50°的溫度醫療目的,我們必須選擇至少具有高於編號合金4
之材料熱傳性質。如果形狀更加平滑與無彎曲,熱分佈會較為廣闊。然而,不同
形狀與特性的材料會造成溫度分佈發生變化,雖然在低傳導係數材料下最高溫度
幾乎是相同的。此外,如果溫度接受器不大於熱源太多時,熱會擴散更迅速且溫
度較保溫。
URI
https://203.71.86.71/handle/123456789/56932

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