| Extended surface heat transfer-1 |
- Extended surface heat transfer is an important engineering application. A new governing equation is often derived.
- For the derivation assume temperature varies only in the x direction. However, heat is lost in the y direction and therefore must be accounted for also. A two (or higher) dimension problem is converted to a one dimensional situation – this is why a new governing equation needs to be derived.
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| Extended surface heat transfer-2 |
- Consider a surface attached to a parent surface as shown:
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- Take small slice at a given distance ‘x’ – need not be circular as shown
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