What amount of heat will give a brick oven, built of 300 bricks, when it cools from 70 to 20 degrees

What amount of heat will give a brick oven, built of 300 bricks, when it cools from 70 to 20 degrees Celsius. The mass of one brick is 5 kg

To calculate the amount of heat given off by the brick oven used during cooling, we apply the formula: Q = Cк * m * (tн – tк) = Cк * n * m1 * (tн – tк).

Variables and constants: Cк – specific heat capacity of a brick (Cк = 880 J / (kg * c)); n is the number of bricks (n = 300 bricks); m1 is the mass of one brick (m1 = 5 kg); tн – initial temperature (tн = 70 ºС); tк – final temperature (tк = 20 ºС).

Calculation: Q = Cc * n * m1 * (tn – tc) = 880 * 300 * 5 * (70 – 20) = 66 * 10 ^ 6 J (66 MJ).