The pressure gauge on a steam condenser for a turbine indicates 26.2 in. Hg of vacuum. The barometer reading is 30.4 in. Hg. What is the absolute pressure (psia) in the condenser ?
according to my knowledge (not a lot),
The barometer reading is gauge pressure as most pressure measuring devices gives the gauge pressure .
According to the formula
Absolute pressure = gauge pressure + atmospheric pressure .
What is the atmospheric pressure according to this ? And why ? I'm not sure .
What does the 26.2 in. Hg of vacuum means ?