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Data Description
| Data | Unit | Description | ||
| Set | Item | Type | Native | |
| Equipment Properties | Condensate Temperature | Temperature | F | The temperature of the condensate stream. The default is the saturated temperature at the Condensate Pressure. |
| Vessel Pressure | Pressure | psia | The pressure of the vessel. The default is the stream inlet pressure. | |
| Steam condensed | Fraction or Percent | Fraction | Fraction of inlet stream that is condensed | |
Equipment Properties
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Example of using equipment
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Method&Equations
If the condensate pressure is not specified it is set to the inlet vapor pressure.
The condensate is set to the temperature specified (if it is lower than the condensing temperature). If the temperature is not specified, the condensate is set to the saturated temperature.
The energy available for transfer to the cold inlet stream is calculated as:
Q = FI1 * HI1 - FO1 * HO1 - FO2 * HO2
where
Q - energy available for transfer
FI1- the flow in the inlet vapor stream
HI1- the enthalpy of the inlet vapor stream
FO1 - the flow in the outlet vapor stream
HO1- the enthalpy of the outlet vapor stream
FO2 - the flow in the outlet condensate stream
HO2 - the enthalpy of the outlet condensate stream
The outlet hot water enthalpy is then:
HO3 = (FI2 * HI2 + Q) / FO3
where:
HO3 is the enthalpy of the outlet hot water stream
FI2 is the flow in the inlet cold water stream
HI2 is the enthalpy of the inlet cold water stream
FO3 is the flow in the outlet hot water stream
Warnings
Specified condensate temperature higher than the condensing temperature.
Steam condensed fraction zero! No coolant needed!
