Several internal variables relate to sizing calculations. Although the primary intent for the EMS is to enable custom controls for operation, using internal variables is a prime example of extending the power of user-defined calculations to control certain aspects of sizing calculations.
A series of internal variables is available related to zone sizing:
- Final Zone Design Heating Air Mass Flow Rate (kg/s)
- Intermediate Zone Design Heating Air Mass Flow Rate (kg/s)
- Final Zone Design Cooling Air Mass Flow Rate (kg/s)
- Intermediate Zone Design Cooling Air Mass Flow Rate (kg/s)
- Final Zone Design Heating Load (W)
- Intermediate Zone Design Heating Load (W)
- Final Zone Design Cooling Load (W)
- Intermediate Zone Design Cooling Load (W)
- Final Zone Design Heating Air Density (kg/m3)
- Intermediate Zone Design Heating Air Density (kg/m3)
- Final Zone Design Cooling Air Density (kg/m3)
- Intermediate Zone Design Cooling Air Density (kg/m3)
- Final Zone Design Heating Volume Flow (m3/s)
- Intermediate Zone Design Heating Volume Flow (m3/s)
- Final Zone Design Cooling Volume Flow (m3/s)
- Intermediate Zone Design Cooling Volume Flow (m3/s)
-
Zone Outdoor Air Design Volume Flow Rate (m3/s)
Sizing:System[LINK]
A series of internal variables is available related to air system sizing:
- Intermediate Air System Main Supply Volume Flow Rate (m3/s)
- Intermediate Air System Coincident Peak Cooling Mass Flow Rate (kg/s)
- Intermediate Air System Coincident Peak Heating Mass Flow Rate (kg/s)
- Intermediate Air System Noncoincident Peak Cooling Mass Flow Rate (kg/s)
- Intermediate Air System Noncoincident Peak Heating Mass Flow Rate (kg/s)
- Intermediate Air System Heating Volume Flow Rate (m3/s)
- Intermediate Air System Cooling Volume Flow Rate (m3/s)
- Air System Cooling Design Sensible Capacity (W)
- Air System Heating Design Sensible Capacity (W)
- Air System Preheating Design Sensible Capacity (W)
- Air System Outdoor Air Design Volume Flow Rate (m3/s)
- Air System Cooling Design Mixed Air Temperature (C)
- Air System Cooling Design Mixed Air Humidity Ratio (kgWater/kgDryAir)
- Air System Cooling Design Return Air Temperature (C)
- Air System Cooling Design Return Air Humidity Ratio (kgWater/kgDryAir)
- Air System Cooling Design Outdoor Air Temperature (C)
- Air System Cooling Design Outdoor Air Humidity Ratio (kgWater/kgDryAir)
- Air System Heating Design Mixed Air Temperature (C)
- Air System Heating Design Mixed Air Humidity Ratio (kgWater/kgDryAir)
- Air System Heating Design Return Air Temperature (C)
- Air System Heating Design Return Air Humidity Ratio (kgWater/kgDryAir)
- Air System Heating Design Outdoor Air Temperature (C)
- Air System Heating Design Outdoor Air Humidity Ratio (kgWater/kgDryAir)
An internal variable is available for plant system sizing.
- Plant Design Volume Flow Rate (m3/s)
Sizing[LINK]
Several internal variables relate to sizing calculations. Although the primary intent for the EMS is to enable custom controls for operation, using internal variables is a prime example of extending the power of user-defined calculations to control certain aspects of sizing calculations.
Sizing:Zone[LINK]
A series of internal variables is available related to zone sizing:
Sizing:System[LINK]
A series of internal variables is available related to air system sizing:
Sizing:Plant[LINK]
An internal variable is available for plant system sizing.
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This documentation is made available under the EnergyPlus Open Source License v1.0.