Refrigeration & Equipment Engineering

Unit 9 - Heat load calculation

9.4.Calculating heat quantity
The quantity of heat which must be added to or removed from any given material in order to bring about a specified change in ;its temperature can be computed by using the following equation.

H or Q = mcΔT

Q = Quantity of heat either absorbed or rejected by the material
m = the weight of the material
c = The specific heat of the material
T₁ = Initial temp. T₂ = final temp.
ΔT = Difference between the temperature T₁ and T₂