What amount of heat is released during cooling of 3 tons of cast iron per 100 ‘C?

To find the heat released as a result of cooling the taken cast iron, we apply the formula: Q = Cch * m * Δt.

Variables and constants: Cch – specific heat capacity of cast iron (Cc = 540 J / (kg * K)); m is the mass of cast iron taken (m = 3 t = 3 * 10 ^ 3 kg); Δt – temperature change (Δt = 100 ºС).

Calculation: Q = Cch * m * Δt = 540 * 3 * 10 ^ 3 * 100 = 162 * 10 ^ 6 J.

Answer: When cooling 3 tons of pig iron, 162 MJ of heat should have been released.