- #1
ash-kennard
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Homework Statement
a furnace wall has an area of 3m^2. a thickness of 250mm and a thermal conductivity of 1.5 W m^-1 K^-1. calculate the rate of heat transfer through it when the temperature is 40K
Homework Equations
Q/t=KxAx(T2-T1)/L
The Attempt at a Solution
This isn't homework as such, it was given in a list of questions aimed at helping with revision for my module exam. I've done the other 11 questions but this one is doing my head in. the furthest I've gotten to is (Q/18t)-40=T2 but without knowing T2 or the transfer rate is it impossible to progress to an answer?
please help. don't want to be revising something incorrectly for the exam