Question 44General Subjects - 1st Asst/Chief70% to pass
The temperature of the steam flow to the saltwater feed heater, in a flash type evaporator can be manipulated by a/an _______________.
AI Explanation
The correct answer is C) attemporator in the steam supply piping.
An attemporator is a device used to precisely control the temperature of the steam supply to a process, such as the saltwater feed heater in a flash type evaporator. By adjusting the attemporator, the operator can manipulate the temperature of the steam flow, which in turn controls the temperature of the feed water entering the evaporator. This allows for precise control of the evaporator's operating conditions.
The other answer choices are incorrect because they do not directly control the steam temperature. A sensor wired to the salinity dump valve (A) would not affect the steam temperature, a pressure regulator (B) would control the steam pressure but not necessarily the temperature, and a thermally actuated bypass valve (D) would bypass the steam flow but not necessarily control its temperature.
Related Questions
#42 Under normal operating conditions, the highest temperature and pressure conditions existing for flash-type evaporators will occur in the _______________.#43 Where a two-stage air ejector set is used in a two-stage flash evaporator, the first-stage air ejector takes suction from the second stage of the evaporator, and the second stage air ejector _______________.#45 The brine level in the second-stage of a flash-type evaporator is determined in part by the feed rate, the rate of evaporation in both stages, and the _______________.#46 Steam supply for the operation of the low pressure evaporators may be obtained directly from the _______________.#47 In a flash type evaporator, all saltwater headers are vented through individual vent cocks to the _______________.