Question 172Steam Plants - Assistant Engineer70% to pass
Insufficient combustion air supply to the furnace would cause _______________.
AI Explanation
The correct answer is C) low superheater outlet temperature.
Insufficient combustion air supply to the furnace would reduce the efficiency of the combustion process, resulting in lower heat transfer to the superheater. This would lead to a lower superheater outlet temperature, as the superheater is not receiving enough heat to raise the steam temperature to the desired level.
The other options are incorrect because:
A) High feed water consumption is not directly related to insufficient combustion air.
B) The fires sputter due to improper air-fuel ratio, not just insufficient air.
D) High stack temperature is more likely to occur when there is excessive air supply, not insufficient air.
Related Questions
#170 Air accumulated in the inter condenser of the air ejector assembly is discharged directly to the _______________.#171 The automatic recirculating valve in the main condensate recirculating line is controlled by a temperature sensor which is located at the _______________.#173 Under otherwise normal steaming conditions, an abnormally high temperature at the superheater outlet of a single furnace boiler would indicate _______________.#174 Which of the listed conditions can cause high superheater outlet steam temperature in an automated boiler? #175 If a pressure drop does not exist across the superheater in a steaming boiler _______________.