131. Reheating furnace (pusher type) is used for heating
132. Ceramic recuperators (made of SiC) is economical, only when used for preheating combustion air above __________ °C.
133. In which of the waste heat recovery equipment, the flow of flue gas and air is alternately reversed after a fixed interval of time?
134. Turndown ratio of a burner gives an idea of the __________ in the furnace.
135. Furnace aerodynamics is related to the __________ in the furnace.
136. In a furnace operation, which is not preheated?
137. Soaking pits are meant for heating steel
138. Turn down ratio of a burner
139. Heat transfer takes place through a liquid medium surrounding the submerged material under heating, in case of a/an
140. Unit of furnace loading is
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