Standard EnergyPlus
Conditions[LINK]
Standard
Temperature and Pressure[LINK]
Several objects specify inputs at “standard temperature and
pressure”. Standard Temperature is dry air at 20\(^{o}\) C drybulb. The program
uses local barometric pressure to account for altitude using
the equation for “standard atmospheric” pressure on p 6.1 of
the ASHRAE 1997 HOF (SI edition) to initialize the air systems
being simulated.
\[Stdpressure = 101325\cdot
{\left( {1.0 - Z\cdot {{2.25577}^{ - 5}}}
\right)^{5.2559}}\]
where
StdPressure = pressure {Pa}
Z = altitude/elevation {m}
Standard EnergyPlus Conditions[LINK]
Standard Temperature and Pressure[LINK]
Several objects specify inputs at “standard temperature and pressure”. Standard Temperature is dry air at 20\(^{o}\) C drybulb. The program uses local barometric pressure to account for altitude using the equation for “standard atmospheric” pressure on p 6.1 of the ASHRAE 1997 HOF (SI edition) to initialize the air systems being simulated.
\[Stdpressure = 101325\cdot {\left( {1.0 - Z\cdot {{2.25577}^{ - 5}}} \right)^{5.2559}}\]
where
StdPressure = pressure {Pa}
Z = altitude/elevation {m}
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This documentation is made available under the EnergyPlus Open Source License v1.0.