Which of the following variables does not affect the furnace capacity ?
Correct answer: D. None of these
- A. Size of the furnace
- B. Gas velocity in furnace
- C. Ratio of wall surface to surface of stock
- D. None of these
Explanation
Furnace capacity depends on furnace size, gas velocity and the relative wall-to-stock surface area because these affect heat-transfer rate and residence time. Therefore none of the listed variables can be excluded.
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