Question 69Steam Plants - QMED

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.