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    Conduction

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    Talib Al_Munawri
    Director-General
    Director-General

    Posts : 337
    Join date : 2009-07-03
    Age : 30
    Location : Sultanate of Oman

    Conduction

    Post by Talib Al_Munawri on Mon Oct 25, 2010 8:16 pm



    Conduction


    What is Conduction? Write two example.

    Is the result of the transfer of vibrational energy from one molecule to another. energy transferred by direct contact.

    Example:- - furnace -shell and tube.

    State a formula of coefficient of heat transfer?

    Q= UA Δt

    Where:-

    Q: heat transfer per unit time
    U: overall heat transfer coefficient (w/ m2k)
    A: Area available for the flow of heat
    Δt: Temperature difference.

    State furrier law?

    The fourier law states that the rate of heat flow by conduction is a given direction is proportional to:

    - The gradient of temperature in that direction dT/dx
    - The area normal to direction of heat flow.
    - Then heat flow in the x direction
    - Q=-KA dt/dx



    Distinguish between mean temperature difference for co-counter & countercurrent flow?







    Example:



    Answer




    Example:



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    Example:



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    Example:



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    Future Eng.
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    Posts : 25
    Join date : 2009-09-13
    Age : 30
    Location : some.where.near.by!

    Re: Conduction

    Post by Future Eng. on Wed Oct 27, 2010 2:03 am

    great job mate.

    you have remind us about the Heat transfer

    Thanking you indeed mate

      Current date/time is Tue Aug 22, 2017 9:45 pm