In a furnace, the heat taken by the charge/stock and the heat lost to the furnace structure & flue gases depends on the__________________?
Correct answer: D. All A., B. and C.
- A. Rate of firing and emissivity of flame
- B. Thermal conductivity of the charge & structural materials of furnace
- C. Nature of process; whether batch, continuous or intermittent
- D. All A., B. and C.
Explanation
Charge heating and furnace losses are governed by firing rate and flame emissivity, material thermal conductivities, and whether the process is batch, continuous or intermittent. Since all three groups affect the heat balance, the combined choice is required.
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