Estimating Energy Saving Potential by Applying Personalized Ventilation in an open Space Office in Winter

Abstract

(no german version). In new, airtight buildings mechanical ventilation needs to be operated at least part of the year to provide the required amount of fresh air. The effect of ventilation effectiveness and control strategy on the energy demand of an open plan office equipped by different tpyes of ventilation systems, including mixing ventilation with constant air volume, demand control ventilation, and personalized ventilation were studiey by TRNSYS. Part of the simulations were perfomred by coupling TRNSYS with COMIS for detail modelling of air paths. The energy demand was lowest for personalized ventilation, taking the improved ventilation effectiveness into account. However, when COMIS was used for detailed air paths modelling, the energy demand was lowest for the demand controlled ventilation. The energy benefits of different systems depended on the energy need for space heating, system configuration and operation, and occupancy.

In new, airtight buildings mechanical ventilation needs to be operated at least part of the year to provide the required amount of fresh air. The effect of ventilation effectiveness and control strategy on the energy demand of an open plan office equipped by different tpyes of ventilation systems, including mixing ventilation with constant air volume, demand control ventilation, and personalized ventilation were studiey by TRNSYS. Part of the simulations were perfomred by coupling TRNSYS with COMIS for detail modelling of air paths. The energy demand was lowest for personalized ventilation, taking the improved ventilation effectiveness into account. However, when COMIS was used for detailed air paths modelling, the energy demand was lowest for the demand controlled ventilation. The energy benefits of different systems depended on the energy need for space heating, system configuration and operation, and occupancy.