Question 42General Subjects - 1st Asst/Chief70% to pass
Under normal operating conditions, the highest temperature and pressure conditions existing for flash-type evaporators will occur in the _______________.
AI Explanation
The correct answer is D) salt water feed heater.
In a flash-type evaporator, the highest temperature and pressure conditions occur in the salt water feed heater, which is responsible for preheating the incoming seawater before it enters the first stage of the evaporator. This is because the feed heater is the point where the seawater is exposed to the highest temperature and pressure in the system, as it absorbs heat from the steam or hot water used to raise its temperature.
The other options are incorrect because they do not represent the highest temperature and pressure conditions in the evaporator system. The first and second stages of the evaporator will have lower temperatures and pressures compared to the feed heater, and the brine pump discharge is not directly exposed to the highest thermal and pressure conditions.
Related Questions
#40 Small droplets of water entrained in the flashed vapor produced in a flash-type evaporator are removed by the _______________.#41 Regarding the low pressure evaporator steam control orifice in the live steam supply line, the steam at the outlet of the orifice if not properly conditioned will be developed as _______________.#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 _______________.#44 The temperature of the steam flow to the saltwater feed heater, in a flash type evaporator can be manipulated by a/an _______________.#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 _______________.