6.2.4 Example A: Radiator
Course subject(s)
6. Radiation
We would like to compare the heat transfer coefficient of radiation 
and convection 
. So, we have a radiator with a temperature of 
. Air is rising from the radiator: free convection. And, heat is radiating to the surroundings with a temperature of 
. Calculate both heat transfer coefficients if the emission coefficient is about 0.9 and Prandtl number is 0.7.
, 
, 
and 
. Take for the length 
and for the gravity constant 
.
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