Hi everyone.
I have a question regarding, convective heat transfer coefficient.
What is the relation between surface temperature and convective heat transfer coefficient of air?
If the convective heat transfer coefficient value for stagnant air is 5 at 25'C.
What could be its value if the surface temperature is increased to 100'C keeping all the conditions the same.
Dear Raja Sekhar Godine
The natural convection coefficient depends strongly on the temperature difference. However, the forced convection coefficient does not directly depend on surface temperature. It worth noting that the parameters mentioned by İbrahim Halil Yılmaz affect the forced convection coefficient.
You can calculate the natural convection heat transfer coefficient using the following reference:
Holman, Jack Philip. Heat Transfer-Si Units-Sie. Tata McGraw-Hill Education, 2002.
https://www.sciencedirect.com/search/advanced?qs=convective%20Heat%20transfer%20coefficient%20on%20surface%20temperature
Dear Raja Sekhar Godine
The natural convection coefficient depends strongly on the temperature difference. However, the forced convection coefficient does not directly depend on surface temperature. It worth noting that the parameters mentioned by İbrahim Halil Yılmaz affect the forced convection coefficient.
You can calculate the natural convection heat transfer coefficient using the following reference:
Holman, Jack Philip. Heat Transfer-Si Units-Sie. Tata McGraw-Hill Education, 2002.
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