Question 182Steam Plants - QMED70% to pass
Excessive recirculation of condensate should be avoided, as it can cause _______________.
AI Explanation
The correct answer is A) excessive cooling of the condensate.
Excessive recirculation of condensate can lead to excessive cooling of the condensate, which is undesirable. As the condensate is recirculated back to the boiler, excessive cooling can result in lower boiler feedwater temperatures, requiring more energy input to bring the water back up to the proper temperature for boiler operation. This can reduce the overall efficiency of the steam plant.
The other options are incorrect because they do not directly result from excessive condensate recirculation. Option B is about overheating of the air ejectors, option C is about the condenser hotwell being drained at low speeds, and option D is about overheating of the vent condenser, none of which are direct consequences of excessive condensate recirculation.
Related Questions
#180 If the condensate level in the loop seal of the air ejector inter condenser is lost, _______________.#181 If the boiler water and condenser hotwell levels are normal, but the DC heater level is only 30% of full, you should _______________.#183 Which of the conditions listed could prevent a centrifugal condensate pump from developing its rated capacity? #184 Excessive water loss from the main feed system can be caused by _______________.#185 Saltwater contamination of condensate could occur at which component?