Question 69Steam Plants - QMED70% to pass
According to the illustrated diagram, what statement is true concerning the operation of the main condenser hotwell level control device? Illustration SG-0010
AI Explanation
The correct answer is B) The main condenser hotwell level is controlled by throttling the flow in a recirculating line teed off the main condensate pump discharge line and leading back the main condenser.
This is the correct answer because the main condenser hotwell level is typically controlled by recirculating a portion of the main condensate pump discharge flow back to the main condenser. This allows the level in the hotwell to be maintained at the desired setpoint by adjusting the amount of recirculation flow.
The other options are incorrect because they do not accurately describe how the main condenser hotwell level is typically controlled. Controlling the speed of the main condensate pump (A), throttling the discharge to the main air ejector (C), or throttling the suction from the hotwell (D) are not the primary means of controlling the hotwell level.
Related Questions
#67 Makeup feed water is brought into an operating closed feed system via the _______________.#68 Air in the main condenser is harmful because it will _______________.#70 In the condensate system, the automatic recirculating valve can be actuated by the _______________.#71 The automatic recirculating valve in the main condensate recirculating line is controlled by a temperature sensor which is located at the _______________.#72 Clean low pressure steam drains are collected in the _______________.