Calculate ASME B31.1 power piping steam mass, velocity and flow rate from the steam table (IAPWS R7-97 Steam Table).
Steam mass and volume can be calculated from steam temperature and pressure, and either steam mass, steam volume, or piping length. Steam flow rate and velocity can be calculated from steam temperature and pressure, and either steam mass flow rate, steam volume flow rate, or steam velocity.
Steam properties can be calculated for water and steam, saturated water, saturated steam, saturated water and steam, metastable water, and metastable steam. The calculations for water and steam are valid between 273.15 K and 1073.15 K (0 to 100 MPa), and between 1073.15 K and 2273.15 K (0 to 50 MPa).
The saturated water and steam calculations are valid between 273.15 K and 647.096 K.
The metastable calculation is valid between 273.15 K and 647.096 K, and for pressure from the saturated vapour line to the 5% equilibium moisture line (user defined).
Note : There is an anomaly in the steam calculation for region 3 between the saturated vapour line, the regions 2/3 boundary, and the critical pressure. Refer to the region 3 anomaly help page for more details (click the utility button on the data bar).
Reference : ANSI/ASME B31.1 : Power Piping (2014)
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