A、fuel-air ratio
B、compression ratio
C、fuel rack
D、viscosity index
更多“In boilers, besides maintaining the burner atomizers, air diffuser vanes, fuel temperature, forced draft fan, fuel pump and other hardware in good condition, there are some adjustments on the （）that can produce a good flame for the most efficient operation.”相关的问题
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、precipitate silica from solution B、reduce corrosion in the heating coil C、prevent clogging and erosion in the coil D、maintain zero water hardness
A、completely drain the boiler in an emergency B、prevent sludge from forming in the drum C、remove floating impurities from the boiler water surface D、remove settled solids from the water drum
A、caustic embrittlement of the boiler metal B、acidic corrosion of the boiler metal C、hard scale deposits on the boiler tubes D、etching of the heat exchange surfaces
A、remove suspended and precipitated solids from the boiler water B、completely drain the boiler in an emergency situation C、prevent hardened scale deposits in the water drum D、remove floating impurities from the oily water surface
A、high steam pressure in the boiler B、abnormally high feed water temperature C、abnormally high boiler water temperature D、steam demand exceeding feed pump capacity
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