Stack heat losses can be minimised by________________?
Correct answer: A. Controlling the excess air
- A. Controlling the excess air
- B. Oxygen enrichment of combustion air
- C. Using low c.v. fuels
- D. Maintaining proper draft in the furnace
Explanation
Excess air carries hot combustion gases out of the stack, so controlling it reduces the sensible heat lost with those gases. Too little air causes incomplete combustion, making proper excess-air control the practical solution.
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