Heat Transfer Through Composite Wall
Hi All
I have an insulated composite wall. I know all of the thicknesses, K values and the inner wall temperature T1. How do I determine the outer wall temperature, T2, if I don't know the heat transfer rate Q?
Thanks in advance for all of your help.
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Yes, you are right with given information in problem you might end up with 1 equation 2 unknowns. But if you are allowed to make engineering guess like ambient temp at right side as standard room temperature T1=25°C. Then you can solve the problem? In that case
Q = T5-T1/(Sum of all Rth)
Also, as you said convective heat transferred can be equated to this Q dot as there is no way of generating heat inside composite wall. But in that case if you want to use Newton's equation Q=hA(Ts-Tamb). You may not know 'h' value.
I could have commented better if you posted the entire problem :)