Heat balance
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Vertical drying kiln for producing coal balls, with a daily production capacity of 1,000 tons of coal balls; the moisture content of the coal balls upon entry is 12%, while it is ≤1% upon exit. How to perform a heat balance calculation to determine the amount of heat required to supply the kiln? What other data is needed?
The principle of heat balance is: heat input + heat released by reactions = heat output + heat loss. Based on the conditions provided by the poster, the heat inputs are mainly: 1. Heat input from hot air, 2. Heat input from dry coal balls, 3. Heat input from 12% water ； The heat carried away mainly includes: 1. heat carried away by exhaust air, 2. heat carried away by 1% water, 3. heat carried away by 11% steam, 4. heat carried away by dry coal balls. There is no reaction heat; heat loss is calculated as 5% of the heat carried away or brought in. The main data required are: the enthalpy of hot air and exhaust air, the enthalpy of coal (not calorific value), and the enthalpy of water and steam.
Excuse me, how is it calculated exactly? I would appreciate some guidance from the person above