Appendix; Ventilation Method - Daikin VAM Series Engineering Data

Appendix

17. Appendix

17.1 Ventilation Method

The ventilation method is mechanical ventilation using mechanical means and natural ventilation under natural conditions.
17.1.1 Natural ventilation
<Natural ventilation>
Warehouse, Gymnasium, Hot air factory
17.1.2 Mechanical ventilation
<Class 1 Ventilation>
Exhaust air o Mechanical ventilation
Supply air o Mechanical ventilation
Indoor
Ventilator
Application to buildings, indoor parking garages, boiler
rooms, electrical rooms, mechanical rooms, and kitchens
<Class 2 Ventilation>
Exhaust air o Natural ventilation
Supply air o Mechanical ventilation
Positive
pressure
Indoor
Ventilator
<Class 3 Ventilation>
Exhaust air o Mechanical ventilation
Supply air o Natural ventilation
Negative
pressure
Indoor
Supply air openings
Application to residences such as for kitchens, toilets,
and rooms with kitchenettes and to copy rooms
172
Ventilation uses the outdoor wind pressure and buoyancy created by
Exhaust air →
temperature differences between indoor and outdoor air. However,
Natural ventilation
because natural ventilation varies according to the natural environment, it
Supply air →
is not as effective as mechanical ventilation and cannot be expected to
Natural ventilation
have a substantial effect.
Because ventilation is forcibly performed by mechanical means, such as a
ventilator or blower, a large airflow rate of stable air can be obtained as
necessary compared to natural ventilation.
Maintaining negative pressure is necessary for ventilation of a room with
highly polluted air in order to avoid the outflow of polluted air to adjacent
rooms or hallways. (Class 1 Ventilation or Class 3 Ventilation) Likewise,
positive pressure is necessary to prevent the inflow of polluted air to rooms
requiring cleanliness. (Class 2 Ventilation)
Ventilator
Exhaust air openings
Application to
cleanrooms, cooling
equipment, and similar
Ventilator
EDMMT712101
VAM-HVE/HVLT Series