Discussion
Match the loss with what reduces it.
1. Dry flue gas loss 2. Blowdown loss 3. Surface loss
P. Better feedwater treatment Q. Trimming the excess air R. Insulating the shell and pipework
Answer: C
Correct answer: 1-Q, 2-P, 3-R
Each loss is attacked at its own source. The dry flue gas loss is driven by the mass of gas leaving, so trimming the excess air reduces it. Blowdown is driven by the solids entering, so better feedwater treatment reduces it. And the surface loss is driven by exposed hot area, so insulation reduces it.
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