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題 名 | Mixed Convection Heat and Mass Transfer in Vertical Concentric Annuli=垂直同心圓管內之混合對流熱質傳 |
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作 者 | 顏維謀; | 書刊名 | 華梵學報 |
卷 期 | 1:1 1993.02[民82.02] |
頁 次 | 頁97-106 |
分類號 | 446.11 |
關鍵詞 | 混合對流; 熱傳與質量傳遞; 潛熱傳遞; Mixed convection; Combined heat and mass transfer; Latent heat transport; |
語 文 | 英文(English) |
中文摘要 | 本文旨在探討熱質傳浮力效應對垂直同心圓管內之強制對流之影響.文中,特別強 調液膜蒸發潛熱對層流對流熱傳之影響.分析中出現之主要無因次參數有□T, □M, Re, □, Pr, Sc, and N.結果係針對空氣水蒸汽混合系統來說明;此外,濕壁面溫度,雷諾數及空氣 中之相對濕度對熱傳之影響亦有詳細之探討.因蒸發潛熱傳遞所引起之熱傳大幅增加,在文 章中有清楚地描述. |
英文摘要 | This study investigates the combined buoyancy forced of thermal and mass diffusion on the forced convection flows in vertical annuli. Particular attention focused on the effects of latent heat transfer associated with liquid film vaporization on the laminar mixed convection heat transfer. Major nondimensional groups identified are□T, □M, Re, □, Pr, Sc, and N. Results are specifically presented for an air-water vapor mixture aystem under varous condition. The effects of wetted wall temperature, Reynolds number, and relative humidity of air at the ambient on the heat transfer are examined in great detail. Trmendous enhancement in heat transfer due to the exchange of latent heat of evaporation is clearly demonstrated. |
本系統中英文摘要資訊取自各篇刊載內容。