Question 1 of 20
Q
During normal operation, the steam flow from the auxiliary exhaust line to the DC heater can be closely related to the _______.
A
spring pressure of the spray valves
B
water level in the DC heater reservoir
C
the temperature and quantity of the condensate flow to the DC heater
D
rate of evaporation in the DC heater
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Question 1 / 205eccef9cbacbc34ba4d457c0
Question 1 of 205eccef9cbacbc34ba4d457c0

During normal operation, the steam flow from the auxiliary exhaust line to the DC heater can be closely related to the _______.

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Question 1 of 20
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During normal operation, the steam flow from the auxiliary exhaust line to the DC heater can be closely related to the _______.

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🔍 Key Concepts

• Function of a DC (de-aerating) heater in a steam plant • How auxiliary exhaust steam is used for heating and deaeration • What controls the amount of steam admitted to the DC heater under normal conditions

đź’­ Think About

• Ask yourself: in steady, normal operation, what DC heater condition would logically require more or less auxiliary exhaust steam? • Which variable in the answer choices would directly change the steam admission, rather than being more of an internal result of heating? • Think about what the DC heater is trying to maintain constant (e.g., certain temperature/condition of feedwater) and which choice ties to that goal most closely.

âś… Before You Answer

• Identify which choice is most directly tied to heat transfer demand in the DC heater, not just a secondary effect. • Consider which parameter the control system or operator would actually sense to regulate auxiliary exhaust steam flow. • Eliminate any options that are more likely dependent outcomes of steam flow, rather than the controlling/related cause of that flow.

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