利用致冷晶片於二維冷凍流道熱傳增強之研究

Heat Transfer Enhancement of Two-dimensional Freezing Channel by Thermoelectric coolers

王俊傑(Jyun-Jie Wang)

指導教授 ： 周榮源

國立虎尾科技大學/工程學院/機械與機電工程研究所/碩士(2009年)

https://doi.org/10.6827/NFU.2009.00061

摘要

本論文以理論分析與實驗量測兩種方法來研究在二維冷凍流道內之熱傳增強現象，文中利用了致冷晶片來強化冷凍流道熱傳遞，並配合流道參數探討熱傳增強的問題。以水與乙二醇(EG/water)的混合流體作為流道冷凍流體，改變流場內雷諾數與不同的工作流體溫度，配合致冷晶片電功率的變化，來探討各種參數對流體熱傳特性的影響。實驗中以水與乙二醇混合液體(EG/water)在致冷晶片下方流道進行冷卻，透過改變流道進口溫度(Tin)在263.15K、268.15K及273.15K下，及流道內冷凍流體雷諾數為200、260、325等，並配合不同電功率下的致冷晶片，進行冷凍系統熱傳效率分析。在理論分析的部分，本研究將邊界設定為非連續式固定熱通量，模擬致冷晶片作用下，上表面及流道壁面之熱傳現象，利用COMSOL 3.2分析軟體，以2-D模型進行模擬求得上表面、流場內壁面之溫度場、速度場、及壓力等分佈，並與實驗模型互相比對驗證。

關鍵字

熱傳遞 ； 致冷晶片 ； 層流流道

並列摘要

In this study, we used theoretical analysis and experimental to discuss the heat transfer of enhancement heat transfer in two-dimensional model.The heat transfer was discussed by change variable Reynold’s number, temperature of working fluid and the power of TE-coolers.
An non-continous heat flux boundary in the top of TE-cooler was set as the limited condition of this analysis. With this boundary condition, we simulated the heat transfer of this system. In this system, EG/water was flowing below the TE-chip as a cooling fluid. By using different the temperature and velocity of cooling fluid, heat transfer of this system was disscuss in several power of TE-cooler. The COMSOL3.2 was be using as simulate software, and the heat transfer of this system was conjectured in 2-D model. The simulate result of Temperature, velocity and pressure field of the cooling fluid was be figure out and compared with experiment result.

並列關鍵字

heat transfer ； TE-cooler ； laminar flow

參考文獻

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