Question

The heat resistance, R, for convection heat transfer on the inside surface of a wall is:

a)R = R1 + R2 + R3
b)R = L / (K A)
c)R = 1 / (h A)
d)1/R = 1/R1 + 1/R2 + 1/R3

Answer 1

The correct heat resistance for convection heat transfer on the inside surface of a wall is given by the equation R = 1 / (h A). Additionally, for conductive heat transfer, the rate can be calculated using Q/t = kA(T₂ - T₁) / d.

Step-by-step explanation:

The heat resistance (R) for convection heat transfer on the inside surface of a wall is represented by the equation R = 1 / (h A), where h is the convection heat transfer coefficient and A is the surface area. This formula reflects that resistance to heat transfer by convection is inversely proportional to the product of the convection coefficient and the surface area. When considering conductive heat transfer through a wall, the rate of heat transfer (Q/t) can be calculated using the equation Q/t = kA(T₂ - T₁) / d, where k is the thermal conductivity, A is the surface area of the wall, d is the thickness of the wall, and (T₂ - T₁) is the temperature difference across the wall.