What do you want to see?
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Data Description
| Data | Unit | Description | ||
| Set | Item | Type | Native | |
| Equipment Properties | Inlet Flow Given | If checked (True) the inlet flow is given and the outlet total flow is the inlet total flow plus the steam flow required. If not checked (False) the outlet flow is given and inlet flow is the outlet flow minus the steam required. | ||
| Outlet Flow Given | If unchecked (False) the inlet flow is given and the outlet total flow is the inlet total flow plus the steam flow required. If checked (True) the outlet flow is given and inlet flow is the outlet flow minus the steam required. | |||
| Outlet Pressure | Pressure | psia | The pressure of the Liquid_Out stream. | |
| Outlet Temperature | Temperature | F | The temperature of the Liquid_Out stream. | |
| Outlet Vapor Fraction | Fraction or Percent | Fraction | The fraction of vapor in the Liquid_Out stream. | |
| Vent Loss | Fraction or Percent | Fraction | The fraction of steam lost to the atmosphere. The total steam required is the stream amount required to meet the outlet conditions plus the steam amount lost to the atmosphere. | |
| No Steam Needed Warning | If checked (True) a warning is issued if no steam is needed. | |||
Equipment Properties
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Example of using equipment
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Method&Equations
The Steam Mix calculates the enthalpy of the inlet stream at the outlet conditions you specified and the quantity of heat required as:
Q = (ENTHI - ENTHO) * INFLO
where:
Q is the heat required
ENTHI is the specific enthalpy of the inlet
ENTHO is the specific enthalpy of the inlet at the outlet conditions you specified
INFLO is the total mass flow of the first inlet stream
The Steam Mix model also back-calculates the amount of steam required as:
AMS = (Q / (ESTM - ESOUT)) * (1.0 + VENT)
where:
AMS is the amount of steam required
ESTM is the enthalpy of the inlet steam
ESOUT is the enthalpy of steam at the outlet conditions you specified
VENT is the vent loss fraction
Warnings
Zero flow in Liquid_Out stream!
Vapor fraction already exceeds!
Outlet temperature exceeds inlet rage!
Vent loss fraction set. Missing Vent_Loss Out stream!
