熱對流係數 wiki

Convection - Wikipedia, the free encyclopedia 最新健身方式  Convection 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. Convection of mass cannot take place ...

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Heat transfer coefficient - Wikipedia, the free encyclopediaFACEBOOK 的野心!!!where q" : heat flux, W/m2 i.e., thermal power per unit area, q = dQ/dA h : heat transfer coefficient, W/(m2•K) ΔT : difference in temperature between the solid surface and surrounding fluid area, K It is used in calculating the heat transfer, typically b...

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Typical value free air convection heat transfer coefficient不可能的!寫這麼清楚了,老師怎麼發現的....我不信!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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Heat Transfer & Thermodynamics engineering - Convective heat transfer coefficient for air        夠驚艷吧!!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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Heat transfer coefficient of bare wire in still air 吃個魚頭討吉利  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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Coefficient de convection thermique — Wikipédia快!趁還沒融化前再打一圈......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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