Stream Calculator Bottoms Product Conditions
Use this window to define the thermal condition of the bottoms product stream from the unit.
Usage
From the Stream Calculator Main Window, push the Bottoms Product button to display this window.
Temperature Specification
You may define the product temperature by specifying a temperature value, a temperature rise above the feed or an increment below bubble point or above dew point. To specify a temperature drop below the feed or an increment above bubble point or below dew point, enter a negative value. If no temperature specification is made, the temperature is calculated by heat balance taking into account any duty entered on the Stream Calculator Main Window. If no temperature specification is entered for the overhead product, both products will leave the unit at the same temperature.
Pressure Specification
The product pressure defaults to that of the blended feeds. You may enter either a pressure value or a pressure drop below the lowest feed pressure.
Temperature Estimate
If you are not entering the temperature value or a temperature rise, you may supply an estimate for the product temperature. In a few cases, this may reduce the computation time.
Product Phases
If there is more than one stream attached to the bottoms product on the PFD, you must allocate the phases to the streams in the Product Phases Window.
Alternatively, instead of entering a numeric value for some of the parameters, they may be referenced using the Define system relative to any available unit operation or stream parameter calculated elsewhere in the simulation. See Stream Calculator Parameters Available for Cross-Referencing for more details.