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Furnace efficiency is best defined as the ratio of

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To easily remember thermal performance equations: \[ \text{Efficiency } (\eta) = \frac{\text{What you want}}{\text{What you pay for}} \] In a furnace, you want to heat the stock, and you pay for the fuel combustion.

Updated On: Jun 25, 2026

Heat input to heat output
Heat stored in stock to total heat input
Heat utilized by the stock to the heat released by the fuel
Heat losses to heat input

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The Correct Option is C

Solution and Explanation

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Furnace efficiency is best defined as the ratio of

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The Correct Option is C

Solution and Explanation

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