Which statement is true concerning operational factors affecting the degree of superheat in a single furnace boiler?

Question

Accepted Answer

Carrying boiler water total dissolved solids higher than normal could result in a decrease in the degree of superheat.

Answer

As the rate of combustion increases, the degree of superheat increases throughout the entire firing range.

Answer

With a constant firing rate and steam consumption equal to generation, a decrease in the incoming feed water temperature results in a superheat temperature decrease.

Answer

With large amounts of excess air, superheater outlet temperature will decrease due to the lack of sufficient time for heat transfer to take place.

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