飲水機之熱能設計與熱管之應用

Utilized Heat Pipe for Saving Energy and Thermal Design for the Water Drinking Supply System

葉鎮平(Zhen-Ping Ye)

指導教授 ： 王金樹

國立臺北科技大學/機電學院/自動化科技研究所/碩士(2005年)

摘要

隨著環境保護之要求省能、省水、低耗能殺菌之環保標章下使得飲水機發展的腳步趨向於高效率低耗能之設計，因此熱能的設計與內部裝置之配置更顯得重要，如何有效的提升飲水機之能源效率值(Energy Efficiency)及使飲水機分散內部熱點之散熱是本研究的主要方向。
本論文即是利用熱管的熱傳特性來提昇子母熱交換桶的熱交換性能特性，透過動態系統方程式的推導並配合Simulink軟體模擬分析，進而提昇飲水機能源效率值。內部熱點分析是藉著Icepak軟體模擬實際飲水機內部散熱模組，且利用實際的發熱量計算出內部流場及溫度場，再利用紅外線熱影像儀來實際量測與電腦模擬做比對，建議合作廠商採用合理的散熱機制，避免程式控制卡過熱的情況發生。
其結果顯示，第六代飲水機能源效率可達靜態能源效率值(EEp)平均為0.665、熱水動態能源效率值(EEh)平均為0.925之間、冰水動態能源效率值(EEc)平均為0.199之間，飲水機裝置熱管後，端點溫差(Terminal Difference Temperature)T.D.值平均改善約6℃，在動態能源效率(EEd)上提升了約3%的效能，經過計算在補水時，每次熱管作動最大節能為114.9kJ。電腦模擬方面，經過與實驗數據比對誤差都在10%以內，透過Icepak模擬顯示，程控板表面溫度為28.4~28.9℃，說明此設計可符合程控板之無過熱情況的設計。

關鍵字

飲水機 ； 熱管 ； Simulink ； Icepak ； 能源效率

並列摘要

The modern water drinking systems are forced to develop highly thermal efficiency design resulted form the Green Energy Environment Logo, which requires lower energy consumption, saving lean water and no contamination for environment. The arrangement of internal components and the calculation of heat transfer energy balance are obviously both important and effective tools to promote the system Energy Efficiency. To overcome the hot spot in the electronic program card is also the main topic in the thesis.
This thesis utilizes high heat transfer rate heat pipe to promote the performance of warm tank which exchange the energy between hot water and inlet cold water. By using the Simulink software to simulate five dynamic equations, which include mass and energy balance for hot, warm and cold tanks.
The Icepak software reveals the flow field and the profile of all the internal device’s outer surface temperature, which show the local maximum temperature of hot spot. Comparing the about results and the Infrared Ray temperature, we get 2% error in hot spot. We are successful to suggest the water drink company to escape the hot spot of program card.
Results express that the sixth generation of water drinking system has been up to 0.615 average steady Energy Efficiency(EEp), 0.925 hot water Dynamic Energy Efficiency(EEh) and 0.199 the ice water Dynamic Energy Efficiency(EEc). The Terminal Difference(T.D.) temperature of warm tank reduces 6℃ which represents the 3% energy saving for each inlet compensation water. The saving energy for each heat pipe is approximate 114.9kJ for each compensation water, which is low cost and design of high efficiency.
All the temperature data of Icepak and results of Simulink simulation are compared with experimental data within ten percentage and the program card surface temperature controlled between 28.4℃ to 28.9℃ which shows the design can be suitable for this kind of water drinking system.

並列關鍵字

Water drinking supply ； Heat pipe ； Simulink ； Icepak ； Energy Efficiency

參考文獻

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