Question 93Steam Plants - 1st Asst/Chief70% to pass
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
AI Explanation
The correct answer is C) 4 degrees Fahrenheit.
The condensate depression is the difference between the condensate discharge temperature and the saturation temperature corresponding to the main condenser vacuum. With a vacuum of 28.5"Hg, the saturation temperature is approximately 86°F. Since the condensate discharge temperature is also 86°F, the condensate depression is 4 degrees Fahrenheit.
The other options are incorrect because:
A) 0.2 inches Hg is the incorrect unit for condensate depression, which is a temperature difference.
B) 0.7 inches Hg is also the incorrect unit for condensate depression.
D) 7 degrees Fahrenheit is an incorrect temperature difference based on the given information.
Related Questions
#91 Coast Guard Regulations #92 The leakage of air into the pump casing by way of the packing gland of a condensate pump, is prevented by _______________.#94 Which statement listed represents a vital function of the main condenser? #95 One of the basic rules applying to the operation of a single-pass main condenser is that the _______________.#96 Air accumulated in the after condenser of the air ejector unit is discharged directly to the _______________.