Support for gas streams
- Last UpdatedAug 11, 2025
- 3 minute read
Support for gas streams is available, in addition to liquid streams. You identify a stream as gas by defining the new Gas Specific Volume property for the stream.
Restrictions
Note the following restrictions of this feature:
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Support for gas streams works for weight-based models only. Support for volume-based models will be added in a future release.
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You cannot configure gas streams for distillation units.
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You cannot send gas streams to a blender. This results in an error diagnostic message.
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Stream values are not available for gas streams.
Units of measure
All the necessary units of measure have been created to cover gas amounts, specific volumes, flows and prices. Units are based either on SCFg (Standard Cubit Feet for gas) or nm3 (normal cubic meters).
The following table shows the new units of measure and unit categories:
|
Symbol |
Name |
Category |
|
SCF |
Standard Cubic Feet |
Gas Amount |
|
kSCF |
Thousand Standard Cubic Feet |
Gas Amount |
|
MMSCF |
Million Standard Cubic Feet |
Gas Amount |
|
Nm3 |
Normal Cubic Meters |
Gas Amount |
|
kNm3 |
Thousand Normal Cubic Meters |
Gas Amount |
|
MMNm3 |
Million Normal Cubic Meters |
Gas Amount |
|
SCF/d |
Standard Cubic Feet per day |
Gas Flow Rate |
|
kSCF/d |
Thousand Standard Cubic Feet per day |
Gas Flow Rate |
|
MMSCF/d |
Million Standard Cubic Feet per day |
Gas Flow Rate |
|
Nm3/d |
Normal Cubic Meters per day |
Gas Flow Rate |
|
kNm3/d |
Thousand Normal Cubic Meters per day |
Gas Flow Rate |
|
MMNm3/d |
Million Normal Cubic Meters per day |
Gas Flow Rate |
|
$/Nm3 |
US Dollars per Normal Cubic Meter |
Gas Price |
|
k$/Nm3 |
Thousand US Dollars per Normal Cubic Meter |
Gas Price |
|
$/SCF |
US Dollars per Standard Cubic Foot |
Gas Price |
|
SCF/lb |
Standard Cubic Feet per Pound |
Gas Specific Volume |
The following units of measure have been renamed:
|
Previous name |
Previous symbol |
New name |
New symbol |
|
Standard Cubic Feet per Minute |
SCF/min |
Cubic Feet per Minute |
ft3/min |
|
Standard Cubic Feet per Hour |
SCF/h |
Cubic Feet per Hour |
ft3/h |
|
Standard Cubic Feet per Day |
SCF/d |
Cubic Feet per Day |
ft3/d |
|
Thousand Standard Cubic Feet per Minute |
KSCF/min |
Thousand Cubic Feet per Minute |
kft3/min |
|
Thousand Standard Cubic Feet per Hour |
KSCF/h |
Thousand Cubic Feet per Hour |
kft3/h |
|
Thousand Standard Cubic Feet per Day |
KSCF/d |
Thousand Cubic Feet per Day |
kft3/d |
|
Million Standard Cubic Feet per Hour |
MSCF/h |
Million Cubic Feet per Hour |
Mft3/h |
|
Million Standard Cubic Feet per Day |
MSCF/d |
Million Cubic Feet per Day |
Mft3/d |
|
Standard Cubic Feet |
SCF |
Cubic Feet |
ft3 |
|
Thousand Standard Cubic Feet |
KSCF |
Thousand Cubic Feet |
kft3 |
|
Million Standard Cubic Feet |
MSCF |
Million Cubic Feet |
Mft3 |
Flowsheet support
The Flowsheet page has been updated to fully support gas streams:
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In the Flowsheet group of the Home ribbon tab, the new Gas Flow list lets you choose the default unit of measure for gas flows.
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In the Flow Summary inspector, the Volume (Gas) column has been added.
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In the Materials inspector, the Gas Flow row appears when relevant.
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In the Pipe Flows inspector, Volume (Gas) columns have been added for Flow and Yield.
Watch items support
In the Watch window, the Object Browser Options tab of the Object Browser pane lists Gas Flows as an option. You can choose to show gas flows for any stream, in your desired units, and the corresponding cells remain blank for liquid flow streams.
