Paper Conference

Proceedings of Building Simulation 2017: 15th Conference of IBPSA


Experimental and Simulation Study to Improve Operation of a Hybrid Ventilation System in an Institutional Building

Charalampos Vallianos, Sophie Yuan, Andreas Athienitis, Jiwu Rao
Department of Building, Civil and Environmental Engineering Concordia University, Montreal, Quebec, Canada

Abstract: Buildings with high thermal mass can use hybrid ventilation to achieve free cooling and reduce energy consumption and peak cooling demand, while maintaining comfort. This paper considers a high rise institutional building and focuses on a typical corridor, where the fresh air enters the building through insulated motorized inlet dampers on two opposite fac¸ades and is exhausted through a fac¸ade atrium. A transient two-dimensional thermal network model was developed for the inlet corridor zone and calibrated with measured data from on-site monitoring. It estimates the air temperature, floor concrete surface temperature and heat removal. The model also estimates the discomfort of the occupants, based on the PPD index, and weighs it against the energy performance to decide whether the motorized inlet dampers should be open or closed. The simulation shows that for 12 days in May, at one of the 27 inlet regions, at least 1.022 kWh/m2 of free cooling can be extracted just from the concrete floor, exceeding the discomfort limit 10.2% of the time.
Pages: 2563 - 2571