Effect of HVAC’s Management on Indoor Thermo-Hygrometric Comfort and Energy Balance: In Situ Assessments on a Real nZEB

This paper proposes the analysis of real monitored data for evaluating relationship between occupants’ comfort conditions and energy balance inside an existing, nearly zero-energy building under different operational strategies heating, ventilation, air-conditioning system. During wintertime, adaptive approach is applied choosing temperature setpoint when air-to-air heat pump provides both heating ventilation. The results indicate that in very insulated buildings with high solar gains, should be decided taking into consideration radiation outdoor temperature. Indeed, room has large glazed surfaces, can also guarantee acceptable indoor a low (e.g., 18.7 °C) considered. electricity consumption reduced from 17% to 43% compared conventional 20 °C). For summertime, suggests adoption dynamic based on differentiated according characteristics. Considering maximization renewable integration, direct expansion system better performance than pump; this last integrated pre-handling unit convenient.