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Homework Statement
A wall is required to be insulated by embedding wood within concrete. the total thickness of the concrete and wood are 10cm and 1 cm respectively and are fixed due to structural constraints. determine the minimum heat leak into the room if the location of the wood can be changed within the concrete. Take K for wood as 0.1w/mk and for concrete 1.0w/mk
Please help.
Homework Equations
thermal resistance
The Attempt at a Solution
I tried solving using thermal resistance concept by equating derivative of the total thermal resistance to 0, but not able to get the answer.