Thermal Resistance Concept
ELECTRICAL ANALOGY OF HEAT TRANSFER:

For slab,
For Cylinder,
For Sphere,
Combinations:
Case 1: Conduction Heat Transfer Through A Composite Slab

Drawing the equivalent thermal circuit

Case 2: Conduction – Convection Heat Transfer Through A Composite Slab:

Drawing the equivalent thermal circuit

CASE 4: Conduction – Convection Heat Transfer Through Composite Cylinder

Drawing the equivalent thermal circuit
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Case 5:Composite Spherical Container

Drawing the equivalent thermal circuit,

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