Question 123General Subjects - Assistant Engineer70% to pass
Which of the following fresh water generators has an operating principle that evaporates pre-heated sea water by causing it to undergo a pressure drop into a vacuum?
AI Explanation
The correct answer is B) Flash type unit.
The flash type fresh water generator operates on the principle of evaporating pre-heated sea water by causing it to undergo a pressure drop into a vacuum. This creates a flash evaporation process, where the sea water rapidly vaporizes, leaving behind the salts and minerals. The vapor is then condensed to produce fresh water.
The other options are incorrect because: A) Submerged tube units use heat exchange to evaporate sea water, C) Titanium plate units use reverse osmosis, and D) Reverse osmosis units use membrane filtration to remove salts and minerals from sea water, rather than evaporation.
Related Questions
#121 With regard to fresh water generators, what statement concerning brine is true? #122 In the production of fresh water from sea water through a process of heating and cooling, the cooling phase of production is usually called _______________.#124 In a flash evaporator, scale as a result of higher than normal temperatures is most likely to occur in the _______________. #125 While circulating heated sulfuric acid through a feed water heater of a flash evaporator for the purposes of scale removal, what would be the indication of the continued presence of scale? #126 When securing a flash-type evaporator for an extended period of time, you should _______________.