During combustion of coal on grate, clinker formation is increased by
the
(A) Use of thick fire bed
(B) Low fusion point of ash (< 1100° C)
(C) Use of preheated primary air
(D) All (A), (B) & (C)
the
(A) Use of thick fire bed
(B) Low fusion point of ash (< 1100° C)
(C) Use of preheated primary air
(D) All (A), (B) & (C)