Details on Ventilation

Information on the Ventilation section in the general heat load data.

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Module overview ➤ Heat load ➤ Project level ➤ General heat load data ➤ Ventilation

Drop-down list: Selection of the ventilation system

Select the type of ventilation system as the default setting for the project. This default setting is initially adopted for each ventilation zone. You can make a different specification in each ventilation zone. The selection of ventilation systems is based on the residential ventilation module. If the Domestic ventilation module is activated, the settings between the two modules are automatically synchronized. If you change the settings and different settings were made in ventilation zones or rooms, you will be asked whether the new setting should be applied to all rooms. If different ventilation systems are selected in the individual rooms, the display of the ventilation system at project level (general heat load data) depends on which system is most frequently used in the rooms.

Eta value (heat recovery)

Enter the efficiency of the heat recovery system in percent. It is only used if there is a supply and exhaust air system (in the ventilation system section, room data ventilation). The efficiency is then used to calculate the supply air temperature of supply air rooms.

Specific air permeability (10 Pa) known (ISSO 53)

Activated: The specific air permeability is known and the input field specific air permeability (10 Pa) is activated for the input.

Deactivated: They calculate according to ISSO 53, but do not know the specific air permeability. The input field Specific air permeability (10 Pa) is deactivated and the value stored in the standard is used for the calculation.

Specific air permeability (10 Pa)

This input field is activated if the option Specific Air Permeability (10 Pa) known (ISSO53) has been activated. Enter the specific air permeability of the building.

Check air volume balance

Activated: If the air volume balance is unbalanced, an error message is issued in the ventilation zone.

Deactivated: The error message is not displayed if the air volume balance is unbalanced.