Question

What are the orders of magnitude for free convection heat transfer coefficient, forced convection and boiling?

Answer 1

The order of magnitude of forced convection is highest followed by free convection and boiling

Explanation:

• the magnitude of the heat transfer coefficient is useful in determining the direction and the amount of energy transfer that is taking place. It is highest in case of forced convection because there are external forces that take place on the  convection.
• In addition to this in case of boiling there is loss of heat to the external and as a result of this the heat transfer coefficient is least in case of boiling.