奈米流體於複合式熱管之性能測試與分析

Thermal Performance Testing and Analysis on Nanofluid Composite Wick Heat Pipe

陳育堂(Yu-Tang Chen) ； 蔡聲鴻(Sheng-Hong Tsai) ； 謝宏榮(Hung-Jung Shei)

《中華科技大學學報》 54期 (2013/01) Pp. 15-27

摘要

本研究使用直徑6mm之複合式熱管，長度分別為150mm與180mm進行熱性能測試與分析，並針對不同複合式毛細結構與充填不同濃度的銀奈米流體進行熱性能探討與分析；銀奈米流體濃度分別為10ppm、20ppm、40ppm；且在不同的加熱功率10W～60W下探討溫度變化與熱阻值之關係。實驗結果顯示相同銀奈米濃度下，熱管長度為180mm時，其熱阻的表現皆優於長度為150mm熱管，且溝槽／燒結複合式熱管具較低之熱阻值；另當加熱功率越大時，熱阻值亦越低。又奈米流體濃度越高時，熱阻值越低，其中銀奈米流體濃度為40ppm時之溝槽燒結式熱管，熱阻值為最低，於180mm熱管長度下，熱阻值為0.02℃/W。

關鍵字

熱性能 ； 複合式毛細結構 ； 奈米流體

並列摘要

This study analyzes the thermal performance of 6mm diameter composite wick heat pipe with the length of 150mm and 180mm. Silver nanofluid concentration of 10ppm, 20ppm, and 40ppm were used to fill in heat pipes with different composite wick structure. The temperature change and thermal resistance will be discussed in different heating power of 10W~60W. The experimental results show that 180mm heat pipes have a better thermal performance at the same silver nanofluid concentration, and groove/sinter composite wick heat pipes with a lower thermal resistance. Another thermal resistance decreases with increasing heating power, and the higher nanofluid concentration, the lower thermal resistance. The 180mm groove/sinter composite wick heat pipe has the minimum thermal resistance 0.02 ℃/W at 40ppm nanofluid concentration.

並列關鍵字

Thermal Performance ； Composite Wick Structure ； Silver Nanofluid