Review of modern demand control solutions and technologies for HVAC operation

HVAC systems, which use traditional control strategies with fixed ventilation rates or rate schedules, do not adjust according to the required IAQ and thermal comfort. As a result, building spaces are being over under-ventilated. In this paper, latest modern solutions for demand-controlled system operation analyzed, based on review of existing studies. Such technologies as human detection computer vision, neural network applications looked at. Different types presence presented applied technology. The most common ones indirect usage data IT equipment, direct through passive infrared sensors, wearable tags, vision sensors. Also, potential activity monitoring, skin temperature, clothing level systems examined. studies discussed in paper show real application examples prove benefits using various types. Research has shown that such have favorable effect both indoor air quality energy consumption. future, should be equipped cameras more accurate analysis room occupancy. must consider occupant behavior, activity, other information, can used environment improvement. Based gained knowledge sensor capable detection, accounting, location marking is developed.