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KS B ISO 4126
| Gas/steam at critical flow |
For the homogenized wet steam of 90% or more dryness
|
|---|---|
| Gas/steam at subcritical flow |  |
| Liquid |  |
Glossary of Terms
| A0 | Minimum required flow cross sectional area | (mm²) |
|---|---|---|
| Qm | Mass Flow rate | (kg/h) |
| C |
Function for isentropic exponent k
← → Scroll left and right 
|
|
| V0 | Specific volume at practical release pressure and temperature | (m³/kg) |
| P0 | Release pressure | (bar a) |
| α | Release coefficient (In general, apply 0.62) | |
| T0 | Release temperature | (K) |
| Z0 | Compressibility coefficient at practical release pressure and temperature (If there is no available data, Z0=0.1) |
|
| M | Mol weight | kg/kmol |
| x | Dryness of wet steam | |
| Kb |
Viscosity correction factor related to Reynold's number(Re) If the liquid viscosity is less than that of water at 20°C, kv=1.0 (Refer to Fig 1. Capacity correction factor for viscosity) |
|
| Kv |
Correction factor for reduction in the theoretical capacity as increase of the back pressure in subcritical flow (Refer to table 2. Capacity correction factor for back pressure) |
|
| Re | Reynold's number
|
|
| μ | Viscosity of the liquid | |
 |
 |
(bar a) |
| Pb | Back pressure (pressure at outlet) | (psia) |
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