Question 102General Subjects - Assistant Engineer70% to pass
In a jacket water heated submerged tube evaporator, what is the primary factor that determines the rate of scale build-up on the submerged tube bundle?
AI Explanation
The correct answer is D) The jacket water inlet temperature to the submerged tube bundle.
The primary factor that determines the rate of scale build-up on the submerged tube bundle of a jacket water heated submerged tube evaporator is the jacket water inlet temperature. Higher jacket water temperatures lead to increased mineral precipitation and scale formation on the submerged tubes, as the higher temperatures accelerate the rate of scale deposition.
The other answer choices are incorrect because the chemical composition of the jacket water coolant additive package, the sea water inlet temperature, and the salt content of the sea water inlet do not directly determine the scale build-up rate on the submerged tube bundle. The jacket water inlet temperature is the key factor that influences the scale formation in this type of evaporator system.
Related Questions
#100 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 _______________.#101 In a 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? #103 If valve "D" is opened during the normal operation of the distiller shown in the illustration, which of the events listed will occur? Illustration MO-0111 #104 What would happen if valve "25" shown in the illustration, vibrated open with the unit in operation? Illustration MO-0111 #105 When securing a jacket water heated submerged tube evaporator for an extended period of time, you should _______________.