1. SPACE SAVING

Saving space is realized because the function of air ducts in a parking garage is taken over by the thrust fans. The thrust fans distribute and transport the air over the parking layer from air supply point to air discharge point. No more air ducts are needed. This saves space.

2. FLEXIBLE INSTALLATION

Various tests have shown that the position of the thrust fans is very flexible. For example, the position of the thrust fans can vary within a radius of approximately 2 meters without affecting the correct operation of the system.

3. COMPLETE MIXING OF THE AIR

If only air is extracted then there is no mixing of the extracted air. After all, you cannot suck out a candle. After all, it is required that the air be extracted for at least 2/3 of a layer. By applying thrust fans, the air on the parking level is excellently mixed. When using thrust fans, no local high concentrations will occur, as is the case with the conventional system with channels.

4. FLUSHING CO / LPG / NOX

To ensure that there is no high local concentration of pollution in every corner or random location in the parking garage, an extensive channel system is often used. With the thrust fans it is possible to create air movement at any place in the parking garage. There are absolutely no "blind spots". By ventilating where a high CO / LPG level is detected and not the entire parking garage, a limited amount of energy is used temporarily. Only then and ventilate where necessary.

5. ENERGY SAVING POSSIBLE

Consider that with a system with air ducts the air is supplied or discharged where the air has to be forced through a duct with a relatively high speed. Resistance must be overcome. This costs energy. In contrast, the propulsion fan system uses the parking garage itself as an air duct.

The air speed is therefore low and so does the required power.

It should be noted that this comparison only applies to systems where air ducts are used. Furthermore, in combination with an addressable CO / LPG detection system, targeted ventilation is possible.

6. RESISTANCE

If we assume that no air ducts are needed, then we can conclude that this is cost-effective. When using the mechanical exhaust fan, this fan can also be set to a lower static pressure because the resistance of the air duct is eliminated.

The fan only has to overcome the resistance of the drainage shaft and the required reserve according to NBN S21-208-2.

This can result in a smaller fan or a fan with a lower speed, making the noise-reducing facilities cheaper again. However, we must realize that the system with thrust fans requires more cabling and a larger control cabinet. Despite these costs, in many cases the system with thrust fans is cheaper than the conventional system.