What is the shift ventilation?

Shift ventilation is a method for routing cold air in the space by moving air from the floor to the ceiling. The air introduced at the floor level is transmitted up with warm air from the heat sources in the room and is discharged on the ceiling. Air can enter the occupied space at a lower speed and warmer temperature than mixed flow systems, offers energy savings, noise reduction and less strokes. The shift ventilation can be used with outdoor air or cooled air. However, sufficient height of the ceiling is required to properly function this type of ventilation. The heat created by people, lights and machines in the occupied room attracts radiator air from the floor, which is known as the thermal stratification. The warm air mixture continues upwards towards the ceiling, where the vents are discharged at the height of the ceiling. Airborne Contaminants, dry like smoke, tend to move up with air stream and are also depleted by ceiling openings.

Mixed flow ventilation system injects the air high in a room with a higher speed where it mixes with the air air to adjust the temperature. In general, lower temperature air requires a level of comfort, and a higher air speed entering space can increase the noise level. On the other hand, the ventilation ventilation system generally moves air at a lower speed, creating less penetration and less noise. The heated air is transmitted upwards from the population, so the input temperature may not be as cold as the mixed flow system requires.

In a slight climate, the ventilation can be supplied with external air, which requires no energy expenditure, only for air movement. The temperature in the room chilled by means of demplaCventilation with EMENT is the lowest near the floor and warmer near the ceiling, unlike the room chilled by a mixed flow system, where the temperature is more consistent at all times. This distinction allows you to use CERoyal air after a long part of the year with a system of displacement, which is a process known as free cooling. In warmer or more humid climates or seasons where air conditioning is required, chilled air is supplied instead of fresh air.

There are some limitations with ventilation ventilation. Usually it works best with a ceiling height of at least 10 feet (3 meters). Lower ceilings provide insufficient space for thermal stratification to make it work well and can be more convenient with a mixed flow system. Heating is usually not combined with ventilation ventilation ventilations because the buoyancy of heated air tends to disrupt thermal stratification. The accelerated flow of heated air towards the ceiling may not provide a balanced temperature in the room.