search:熱對流係數 wiki相關網頁資料
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![Convection - Wikipedia, the free encyclopedia]()
en.wikipedia.orgConvection is the concerted, collective movement of groups or aggregates of molecules within fluids (e.g., liquids, gases) and rheids, either through advection or through diffusion or as a combination of both of them ... ...瀏覽：417 -
![Heat transfer coefficient - Wikipedia, the free encyclopedia]()
en.wikipedia.orgAs mentioned earlier in the article the convection heat transfer coefficient for each stream depends on the type of fluid, flow properties and temperature properties. Some typical heat transfer coefficients include ... ...瀏覽：1129
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日期：2024-04-19
熱傳導係數(thermal conductivity) 是最基本參數 ... 熱傳導係數(k)是是材料特性, 一般是溫度的函數, 可是對流係數(h)是與周遭的散熱環境有關的, ......
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日期：2024-04-19
熱對流（亦稱爲對流傳熱）是三種主要熱傳方式中的其中一種（另外兩種分別是 ... 一个火炉的热对流示意图 ... 参看：流体力学、努塞尔特数、格拉晓夫数和熱傳係數。...
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日期：2024-04-14
對流傳熱係數也稱對流換熱係數。對流換熱係數的基本計算公式由牛頓於1701年提出，又稱牛頓冷卻定律。牛頓指出，流體與固體壁面之間對流傳熱的熱流與它們的 ......
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日期：2024-04-13
Pick whatever formula you like best from http://en.wikipedia.org/wiki/Heat_transfer_coefficient Or guess a number between 5 and 25 W/m^2.K, according to http://www.engineeringtoolbox.com/co...fer-d_430.html If you want an "accurate" value, you need to fin...
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日期：2024-04-18
Seems a tad high. Most textbooks put it between 0.2 and 4 BTU/hr-ft^2- F http:// www.tufts. edu/as/tam pl/en43/le cture_note s/ch5.html However, your mileage may vary, so you can, and should, calculate it for your specific scenario: http://en.wikipedia.or...
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日期：2024-04-16
I don't think this is correct. Radiation almost never dominates except in a vacuum. Try this link: http://en.wikipedia.org/wiki/Convective_heat_transfer Look for natural convective heat transfer, horizontal cylinder. You can ballpark the emissivity and ra...
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日期：2024-04-12
Le coefficient de convection thermique ou coefficient de transfert par convection est un coefficient de transfert thermique. Il permet de quantifier un transfert de chaleur réalisé par un phénomène de convection au sein d'un fluide en mouvement (contre un...
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日期：2024-04-12
La convection est un mode de transfert qui implique un déplacement de matière dans le milieu, par opposition à la conduction thermique ou à la diffusion de la matière. La matière est advectée (transportée-conduite, mais ces termes sont en fait impropres) ...
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