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Table group: Zones

Last modified by Claudia Bless on 2026/08/26 10:21

By right-clicking an object, it can be interacted with by common copy/paste-commands as well as scripts.

The table Zones

Name	The zone name
Group	The group name (assigned by the user or by the tool that created the model). The ‘group’ attribute may be used for arbitrary categorization of zones, e.g. by floor, building section etc. Reports, controls and other mechanisms for selection of zones, may rely on the ‘group’.
Custom text	An additional possibility to add a custom text for each zone.
Custom number	A possibility to add a custom number for each zone.(e.g room number)
Floor height	The vertical offset from the ground level to the top side of the zone floor
Room height	The inner room height (from the top of the floor to the bottom of the ceiling). For rooms with height "to the roof", the (inactive) "height to ceiling" is shown.
Floor area	Floor area (calculated according to the selected standard, see FLOOR_AREA_METRIC in System Parameters). The user may override the calculated area by editing this column. Note that this may have an effect on input parameters that are related to floor area, e.g. VAV air flow.
Heat setp.	The heating set point for this zone. The displayed setpoint may be overridden by a zone control macro.
Cool setp.	The cooling set point for this zone zone. The displayed setpoint may be overridden by a zone control macro.
AHU	The main central AHU connected to the zone
System	The type of the ventilation system
Supply air	The air flow supplied by mechanical ventilation per square meter of floor area (the maximum value in case of VAV). This column is editable for zones with single mechanical air supply. Shown as empty cell if the air supply is not given for some AHU.
Exhaust air	The air flow removed by mechanical ventilation per square meter of floor area (the maximum value in case of VAV). This column is editable for zones with single mechanical air return. Shown as empty cell if the air supply is not given for some AHU.
Occupants	The number of occupants in the zone per square meter of floor area (ignoring the occupancy schedules). This column is editable for zones with single "Occupant" object.
Lights, W	The power emitted by lighting in the zone per square meter of floor area (ignoring the lighting schedules). This column is editable for zones with single "Light" object.
Lights, kWh	The energy emitted by lighting in the zone per square meter of floor area in one year according to the lighting schedules.
Equipment, W	The sensible power emitted by the equipment in the zone per square meter of floor area (ignoring the equipment schedules). This column is editable for zones with single "Equipment" object.
Equipment, kWh	The energy emitted by the equipment in the zone per square meter of floor area in one year according to the equipment schedules.
Ext win area	The area of exterior windows and skylights. Window frames are included. For skylights, the glazed area of the sides is counted. Any (illegal) windows facing to ground are not counted
Occupant schedule	The schedule object for occupancy. This column is editable for zones with single "Occupant" object.
Light schedule	The schedule object for lighting. This column is editable for zones with single "Light" object.
Equipment schedule	The schedule object for equipment. This column is editable for zones with single "Equipment" object.

The table Zone Totals

Name	The zone name
Group	The group name (assigned by the user or by the tool that created the model). The ‘group’ attribute may be used for arbitrary categorization of zones, e.g. by floor, building section etc. Reports, controls and other mechanisms for selection of zones, may rely on the ‘group’.
Floor height	The vertical offset from the ground level to the top side of the zone floor
Zone multiplier, M	Number of rooms of this type. All data in the columns with "M*" in the header are multiplied by this factor.
M*Area	Floor area (calculated according to the selected standard, see FLOOR_AREA_METRIC in System Parameters). If the user changes the area in the table, this will actually change the room multiplier.
M*Supply air	The air flow supplied by mechanical ventilation (the maximum value in case of VAV). This column is editable for zones with a single mechanical air supply duct. Shown as empty cell if the air supply is not given for some AHU.
M*Exhaust air	The air flow removed by mechanical ventilation (the maximum value in case of VAV). This column is editable for zones with a single mechanical air return duct. Shown as empty cell if the air supply is not given for some AHU.
M*VAV min. return air flow, l/s	The setpoint for the minimum air flow removed by mechanical ventilation in case of VAV.
M*VAV max. return air flow, l/s	The setpoint for the maximum air flow removed by mechanical ventilation in case of VAV.
M*VAV min. supply air flow, l/s	The setpoint for the minimum air flow supplied by mechanical ventilation in case of VAV.
M*VAV max. supply air flow, l/s	The setpoint for the maximum air flow supplied by mechanical ventilation in case of VAV.
M*Occupants	The total number of occupants in the zone (ignoring the occupancy schedules). This column is editable for zones with a single "Occupant" object.
M*Lights, W	The total power emitted by lighting in the zone (ignoring the lighting schedules). This column is editable for zones with a single "Light" object.
M*Lights, kWh	The total energy emitted by lighting in the zone in one year according to the lighting schedules.
M*Equipment, W	The total sensible power emitted by the equipment in the zone (ignoring the equipment schedules). This column is editable for zones with a single "Equipment" object.
M*Equipment, kWh	The total energy emitted by the equipment in the zone in one year according to the equipment schedules.
M*Volume	The zone air volume. Volume of objects inserted in the zone (incl. "wall mass" objects) is ignored.
M*Walls above gr.	The area of the external walls (facing ambient) according to the Envelope area definition set in Thermal bridges. Only walls with slope from 30 to 120° are counted. Windows, skylights, and openings (with or without doors) are not included.
M*Walls below gr.	The area of the external walls (facing ground) according to the Envelope area definition set in Thermal bridges. Only walls with slope from 30 to 120° are counted.
M*Ext win area	The area of windows and skylights, including frames. For skylights, the glazed area of the sides is counted.
M*Ext door area	The area of doors in exterior walls. Any (illegal) doors faced to ground are not counted. Any (unlikely!) openings without doors are counted.
M*Roof area	The area of the external roofs according to the Envelope area definition set in Thermal bridges. Only the roof parts with slope > 120° are counted. Area of windows and openings (with or without doors) are not included. For skylights, the non-glazed area of the sides is included.
M*Ground area	The area of the external floors (facing ground) according to the Envelope area definition set in Thermal bridges. Only the enclosing elements with slope < 30° are counted.
M*Floor to amb.	The area of the external floors (facing ambient) according to the Envelope area definition set in Thermal bridges. Only the enclosing elements with slope < 30° are counted. Windows and openings (with or without doors) are not included.
M*Tot env. area	The sum of the previous 7 columns
M*UAtot	The U-value of all external surfaces calculated at standard conditions times their area. Underground surfaces are included.
M*UAwall above gr.	The U-value of all external walls (excluding windows and doors) calculated at standard conditions times their area. Underground walls or wall parts are not included.
M*UAwall below gr.	The U-value of all underground walls and wall parts calculated at standard conditions times their area.
M*UAext. window	The U-value of all external windows calculated at standard conditions times their area (assuming the windows are closed.)
M*UA door	The U-value of all external doors calculated at standard conditions times their area. Any (unlikely!) openings without doors are not included
M*UA roof	The U-value of all external roof parts (excluding windows and glazed part of skylights) calculated at standard conditions times their area.
M*UAfloor to ground	The U-values times areas of external floor surfaces (facing ground). U-values include the insulation by the ground itself calculated at standard conditions using the selected method (ISO 13370 or ICE 3).
M*UAfloor to amb.	The U-values times areas of external floor surfaces (facing ambient).
M*Thermal bridges	The heat transfer through all thermal bridges

The table Zone setpoints

See zone setpoints for descriptions of columns

The table Zone Usage

Shows any connected Zone defaults templates for each zone. Any input data not matching the zone's template is marked in red. Note that several columns' data can not be changed from this view (greyed out cells). These values can however be changed in the "Zones" tab.

The table Room units shows all heating/cooling units including fan coils in the zones of the building.

Only the applicable cells are filled.

Name	The object name
Type	The type of the unit (Ideal cooler, fan coil, etc.)
Group	Free-text field, see above.
Cooling power N.B columns for both "W" and "W/m²"	The nominal cooling power of the unit (either given by the user or calculated from other user-defined parameters, depending of the unit type).
Heating power N.B columns for both "W" and "W/m²"	The nominal heating power of the unit (either given by the user or calculated from other user-defined parameters, depending of the unit type).
Area
Controller	Selection of control strategy. PI, Proportional, or custom control.
Sensor	Selection of which sensor type is controlling the room unit. Air temperature or Operative air are available for the zone (average value), as well as global temperatures, added sensors, or the temperature at the coordiates of the zone occupant. Note that this requires usage of the detailed zone models.
Energy meter	The meter where energy demand for ideal heaters and coolers is being logged.
Water circuit	The circuit where centrally connected room units' energy demand is being provided from. Note: columns for both (cooling) and (heating)
Annotations

The table Terminals

Shows all supply terminals and exhaust terminals in the building model with editable values.

The table Internal gains shows the occupants, equipment, and lighting in the building.

Name	The object name
Type	Occupant, equipment, or light
Number of units	The number of the items in the group
Power	The emitted sensible power (not used for occupants)
Activity level	Activity level of occupants according to Fanger
Control	Selection of control strategy (for lighting only)
Schedule	Schedule for internal gain, 1=present/on, 0=absent/off
Energy meter	Choice of energy meter that reports the energy consumption of the unit
Mean	The mean emitted power according to the schedules (total for all units in the group)
Yearly total	The total energy emitted in the zone in one year according to the schedules.

The table Time schedules shows all time schedules available in the building, also the ones that are not used.

The columns correspond to the rules defined for particular days. If a single rule matches a column, the daily profile of this rule is shown in the table. Otherwise "<complex>" is shown.

The column "Vacation" matches the rules with validity period from 9 to 90 days.

The column "Mean" shows the mean value of the schedule and the column "Yearly total" shows the mean value multiplied by the number of hours in the year.

The table Internal masses shows the parameters of wall mass objects in the zone. Only the applicable cells are filled. See wall mass and Convective wall mass for description of columns.