A、Condenser circulating water pump
B、Feed-water heater drain pump
C、Distillate pump
D、Air ejector condenser drain pump
更多“In the two stage flash distilling plant, which of the pumps listed is vented to the shell of the second stage in order to remove vapor from the pump suction?（）”相关的问题
A、loss of second stage vacuum B、contamination of the distillate C、lower feed inlet temperature D、contamination of the second stage condenser
A、Gravity siphon effect B、Higher vacuum in the second-stage C、Difference in brine density between first and second stages D、lower pressure in first-stage
A、The CDB must be open. B、The CDB must be in the mount stage. C、The CDB must be in the nomount stage. D、Alt existing PDBs must be closed.
A、two or more impellers housed together in one casing and mounted on a single shaft B、a single stepped impeller mounted in a progressively staged casing C、a large radial clearance between the impeller and casing to prevent overheating due to D、an increase in the discharge velocity of the liquid with a corresponding decrease in pressure through the stages
A、PPP Session stage B、PPPoE Search Stage C、PPPoE Discovery Stage D、PPP Confirmation stage
A、vacuum drag from the auxiliary condensate system B、individual vacuum pumps C、a single non-condensing air ejector D、a two stage air ejector
A、A.The colder seawater passing through the condenser tube bundles of the various stages increases evaporator vacuum B、B.The amount of heated feed water discharged from the feed water heater after cndenser is increased C、C.Fewer non-condensable gases are created by the flow of colder seawater D、D.More seawater is allowed to pass through the flint stage overflow weir
A、High pressure compressors are more efficient than low pressure compressors B、Mechanical efficiency divided by compressor efficiency will equal the overall efficiency of the compressor unit C、Two stage compressors are generally more efficient than single stage compressors D、The volumetric efficiency is decreased in multistage compressors
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