Building-integrated greenhouses raise energy co-benefits through active ventilation systems

Buildings and greenhouses consume vast amounts of energy natural resources for heating ventilation. It is still unclear how the synergetic effect combining buildings' forced waste airflows could improve both systems' efficiency. This study quantified recovery potential exchanging in a rooftop greenhouse (iRTG) integrated with an office building HVAC system Mediterranean climate. Using monitored calibrated model data, results showed that iRTG can act as solar collector sink building's low-grade heat. The magnitude harvested thermal be recirculated into by was 205.2 kWh/m2y?1 limited low transmissivity (54%). exhaust air 198 at temperatures sufficient to heat cool iRTG. Compared passive ventilated configuration, integration active ventilation strategies doubled benefits. Building requirements directly determined flows benefits, which increased 63.1% when changes per hour moved from 1.59 3.16. Overall, this demonstrates functionalities coupled contribute urban circularity sustainability.