Heat transfer to the water wall in a high pressure water wall type boiler furnace is mainly by_________________?

Heat transfer to the water wall in a high pressure water wall type boi

1.	Heat transfer to the water wall in a high pressure water wall type boiler furnace is mainly by_________________?
A.	Conduction
B.	Convection
C.	Radiation
D.	Both A. & B.
Answer» D. Both A. & B.

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Heat transfer to the water wall in a high pressure water wall type boiler furnace is mainly by_________________?

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