Induction with Smart Flow system

In typical induction appliances, the achievable cooling capacity is firmly linked to the induction ratio and therefore the primary air volume. It also determines the shape of the flow. However, the required fresh air rate in the building depends on the number of people, while the cooling capacity is primarily a function of the solar input. From an energy point of view, it makes sense to separate these functions.

LTG induction units with the SmartFlow system offer up to three different operating and flow modes as a solution, which are achieved depending on the amount of outside air and cooling capacity actually required:

• Normal operation runs via a so-called mixed-source ventilation system, a combination of mixed and displacement flow. This combines the advantages of so-called mixed ventilation close to the induction unit with displacement ventilation in the occupied zone: the cold air flow is blown upwards at a low speed via the injector of the ventilation unit and mixed with the room air over a short distance. This reduces the air velocity and temperature differences between the air layers to a comfortable level and the air flows into the room with great penetration depth at floor level. The target temperature can be achieved even at low air speeds. This so-called mixed-source ventilation also counteracts temperature stratification in the room and avoids unpleasantly cold layers of air. The strong mixing of the cool supply air with the warm air near the façade results in a significant increase in comfort. The noise level is below 28 dB(A) in normal operation and is therefore barely perceptible. Mixed-source ventilation was developed by LTG engineers in Stuttgart and was also included in the VDI guideline 3804 “Comfort Air Technology for Office Buildings”.
• In the case of increased room occupancy (for example in meeting rooms or other rooms with a high density of people), the mixed-source ventilation is reinforced by additional primary ventilation via a displacement air outlet, thus continuing to guarantee sufficient ventilation and air conditioning.

For fast, intensive air conditioning, there is the so-called boost mode, a type of shock ventilation for temporary use. This opens an additional row of nozzles and activates all flow paths of the appliance. The device operates at full load and layers the air from the mixed source ventilation and the displacement air flow on top of each other, so that good comfort is possible even now. In this way, rooms can be quickly heated to the desired temperature on Monday morning after a cold weekend, for example.

Products with the SmartFlow system: HFBsf and HFVsf.