Question 95Steam Plants - 1st Asst/Chief70% to pass
One of the basic rules applying to the operation of a single-pass main condenser is that the _______________.
AI Explanation
The correct answer is A) cooling water overboard should be about 10°F higher than the inlet temperature.
In a single-pass main condenser, the cooling water flows through the condenser tubes in a single pass, absorbing heat from the steam and condensing it into water. The temperature difference between the inlet and outlet of the cooling water is typically around 10°F, which indicates that the condenser is operating efficiently and extracting the maximum amount of heat from the steam.
The other options are incorrect because: B) maintaining a vacuum of 29.92" of Hg is not a basic rule for single-pass main condensers, C) the quantity of reheating steam flow is not a factor in the basic operation of a single-pass main condenser, and D) the condensate temperature is not required to be above 104°F as a basic rule.
Related Questions
#93 If the main condenser were operating at a vacuum of 28.5"Hg, a condensate discharge temperature of 86°F, a seawater inlet temperature of 72°F, and a seawater outlet temperature of 79°F, what would be the condensate depression? Illustration SG-0026 #94 Which statement listed represents a vital function of the main condenser? #96 Air accumulated in the after condenser of the air ejector unit is discharged directly to the _______________.#97 Maintaining low pressure in a condensing turbine exhaust trunk _______________.#98 A boiler has a steam delivery capacity of 100,000 pounds per hour, and is equipped with four steam atomizing burners. If the load range of the burners is 4 to 1, this means that _______________.