Heat Transfer fourier's law Problem

[timmayy]

i also tried changing the T₁ and T₂ in the conduction equation:
Qconduction = (0.65 x (T₁ - 425)) / 0.05 = 13T₁ - 5525
and so the final answer will be 439.5 celcius - which seems to high to me

 

[Chestermiller]

Let me try to help you get back on the right track.

The three temperatures of interest are:

• Inside wall temperature 152
• Outside wall temperature T2
• Air temperature 20

Which two of these temperatures determine the conductive heat flux?
Which two of these temperatures determine the convective heat flux?
Which two of these temperatures determine the radiative heat flux?

Based on the answers to these three questions, write an equation for each of the three heat fluxes in terms of the appropriate temperatures.

Are the convective and radiative heat fluxes in series or in parallel with one another?
Is the conductive heat flux in series or in parallel with the combination of radiative and convective heat fluxes?

Chet

 

[timmayy]

Ah ok, thanks a lot :)