METHOD AND SYSTEM FOR ASSESSING METABOLIC RATE AND MAINTAINING INDOOR AIR QUALITY AND EFFICIENT VENTILATION ENERGY USE WITH PASSIVE ENVIRONMENTAL SENSORS

摘要

An integrated method for assessing metabolic rate and maintaining indoor air quality and efficient ventilation energy use. A physical sensor assesses room occupancy. An actuated ventilation system is set to a constant CO₂ level in a predetermined healthy range, where the actuated ventilation system includes a CO₂ sensor. The actuated ventilation system sets a first air ventilation rate and the sensor measures a first CO₂ level. The system determines whether CO₂ level is in a healthy range, if not then the CO₂ level is adjusted by setting a subsequent air ventilation rate. A subsequent CO₂ level is measured. If the CO₂ level is determined to meet a predetermined healthy range, then an assessment of change of air ventilation rate (Δ ACH) is determined. The determination of air change rate can be further augmented by a physical pressure based measurement. The overall metabolic rate is generated.