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[Neelakandan]

Hello All,

 

I happened to work on Heat transfer calculation recently and have a doubt on the heat transfer through radiation.

 

Considering an insulated wall/pipe having heat source from inside (gas), we know that the heat transfer happens from inside through convection+radiation then conduction through wall and finally convection+radiation outside to the environment. But when I went through the example calculations and spreadsheets I noticed that the radiative heat transfer co-efficient from inside is often neglected and only the convective heat transfer co-efficient considered.  However for the outside I can see both convection and radiation heat transfer co-effts considered in all cases.

 

Could some on throw some light on this. Thank you so much.

 

Regards

Neel

Mechanical Engineer