If the main condenser were operating at a...

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Question 1 of 205eccef9cbacbc34ba4d4575d

If the main condenser were operating at a vacuum of 28.7"Hg, a condensate discharge temperature of 81°F, a seawater inlet temperature of 72°F, and a seawater outlet temperature of 79°F, what would be the condensate depression? See illustration SG-0026.

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🔍 Key Concepts

• Use the definition of condensate depression: the difference between the saturation temperature at the condenser pressure and the actual condensate temperature. • From SG-0026, find the saturation temperature of steam that corresponds to a vacuum of 28.7" Hg. • Recognize that seawater inlet and outlet temperatures may or may not be needed—decide whether they affect condensate depression.

💭 Think About

• At a vacuum of 28.7" Hg, what is the corresponding saturation temperature in °F from the SG-0026 table? • Once you have that saturation temperature, how far below it is the given condensate discharge temperature of 81°F? • Which answer choice has the correct units for condensate depression based on its definition?

✅ Before You Answer

• Confirm you are reading the correct row for 28.7" Hg vacuum and the correct °F column on SG-0026. • Ensure condensate depression is expressed in degrees Fahrenheit, not in pressure units. • Double-check the subtraction: saturation temperature − condensate discharge temperature before matching it to a choice.

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