Novenco Car Park Systems
Car park ventilation system with jet fans
As the inventor of the ductless car park system with jet fans in the early 90s, NOVENCO Building & Industry set a new standard for the ventilation of closed parking facilities.
Cars have become a natural part of everyday life. Despite widespread public transport systems, nowadays most people own a car. Parking facilities are therefore in great demand, particularly in cities and large towns. Conventional, open car parks take up far too much space, while people tend to prefer parks and open spaces in their cities. In other situations, such as climate conditions or a desire to prevent parked cars from being vandalized necessitate closed parking facilities. Therefore, more and more car parks are being built; both above and below ground. However, car exhaust contains several hazardous gases, carbon monoxide (CO) and benzene amongst others, and for health reasons these must be extracted from car parks.
Theoretical background
Ventilation is the transport of air. To transport air a mass must be moved. At 20°C, the density of air is approx. 1.2 kg/m³. Ventilating 10 m³ air therefore involves moving a mass of 12 kg.
Air can be moved in three ways. The best known method is to transport it through ducting by means of a fan that either sucks or pushes the air through the duct. It is also well known that air moves vertically in response to thermal differentials (the so-called chimney or stack effect). The third method is known as jet ventilation and utilizes the fact that a moving body changes velocity when it is subjected to a "pushing force". In physics, this phenomenon is known as thrust.
On the basis of continuous testing, the use of thrust or jet ventilation has been optimized and integrated into car park safety systems by NOVENCO.
This article provides information on the possibilities provided by jet ventilation.
