saltwater heater shell
the condensation of the saltwater feed
air ejectors, eductors, or a separate vacuum pump
condensation of the distillate
第1题：
All of the following steps are taken in starting a centrifugal pump，EXCEPT to ______．
A.Set the relief valve
B.Check the lubrication system
C.Vent the pump casing
D.Open the pump suction and discharge valves
第2题：
poor distillate quality
reduced evaporator capacity
low brine concentration
improper vacuum regulation
第3题：
In a flash type evaporator, all saltwater heaters are vented through individual vent cocks to the ______.
A.saltwater heater shell
B.second-stage condenser
C.atmosphere
D.second-stage flash chamber
第4题：
Production of high salinity distillate
Seawater feed temperature below 165℃
A leak in the first stage demister
A cracked distillate pump vent line
第5题：
vaporize, with the un-flashed water remaining at the temperature at which it entered the flash chamber
vaporize, with the un-flashed eater equalizing to the saturation conditions existing in the f lash chamber
vaporize, with the remaining water a t a temperature greater than it entered the flash chamber
boil, allowing steam bubbles to rise through the brine at the bottom of the flash chamber
第6题：
completely filled with saltwater
filled with de-scaling compound
tightly closed to exclude air
vented to the atmosphere
第7题：
lower condensing
higher cooling
lower cooling
higher condensing
第8题：
Which of the listed problems could produce a high absolute pressure within a flash type evaporator?
A.production of high salinity distillate
B.seawater feed temperature below 165℃
C.a leak in the first stage demister
D.a cracked distillate pump vent line
第9题：
saltwater heater shell
second-stage condenser
atmosphere
second-stage flash chamber
第10题：
lower
higher
low
high