Based on the previous solution, the conduction hear transfer rate can be calculated:
Similarly for heat convection, Newton’s law of cooling applies:
And for radiation heat transfer:
Recall electric circuit theory - Ohm’s law for electrical resistance:
•We can use this electrical analogy to represent heat transfer problems using the concept of a thermal circuit (equivalent to an electrical circuit).
•The temperature difference is the “potential” or driving force for the heat flow and the combinations of thermal conductivity, convection coefficient, thickness and area of material act as a resistance to this flow:
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