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- Third Assistant Engineer (Steam-Motor-Gas Turbine Plants (Unlimited)) »
- Q537 - Steam Plants I
51. The feed water heater shown in the illustration was designed to maintain the required feed water outlet temperature with an approximate 10″ Hg shell vacuum. If the shell vacuum is decreased to approximately 8″ Hg vacuum, the __________
Decreasing the shell vacuum increases the shell pressure, which raises the steam saturation temperature and consequently increases the feedwater outlet temperature.
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