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.	both 'a' & 'b'
D.	radiation
Answer» E.

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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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