Question 182Steam Plants - QMED

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.