Subcooled water is flowing through a throttle valve in an open system.
The initial steady-state conditions for the throttle valve are as follows:
Inlet pressure = 60 psia
Outlet pressure = 44 psia
Flow rate = 800 gpm
After four hours, the current steady-state conditions for the throttle valve are as follows:
Inlet pressure = 58 psia
Outlet pressure = 46 psia
Flow rate = 1,000 gpm
Which one of the following could be responsible for the difference between the initial and current steady-state conditions for the throttle valve?
A. The throttle valve was closed more.
B. The throttle valve was opened more.
C. Another valve, located upstream of the throttle valve, was opened more.
D. Another valve, located downstream of the throttle valve, was opened more.
Show Answer
Answer: B
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