A、reduce gas flow turbulence
B、prevent exhaust gas corrosion
C、increase the rate of combustion
D、increase the rate of heat transfer
更多“Generating tubes in waste heat boilers are finned to （）.”相关的问题
A、prevent soot fires in the exhaust system B、prevent exhaust gas erosion of the tubes C、increase the velocity of exhaust gas flow D、increase the rate of heat transfer
A、natural circulation of the water in the water tube boiler is better than that in the fire tube boiler B、for the same output the water tube boiler will carry less mass of water compared with the fire tube boiler C、the water tube boiler will cost shorter time for steam raising D、the water tube boiler require lower skill in operating and maintaining
A、Combustion gases flow through the tubes B、Flames impinge on the tubes C、Combustion occurs in the tubes D、Water flows through the tubes
A、Receives saturated steam from the generating tubes B、Serves as a reservoir of boiler feed water C、Holds internal fittings for separation of moisture from steam D、Collects steam exhausted from the turbines
A、generating the SQL profile B、testing and accepting the SQL profile C、generating a list of candidate SQLs for tuning D、adding tuned SQL plans into the SQL plan baseline E、tuning each SQL statement in the order of importance F、generating baselines that include candidate SQLs for tuning
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