Simulation for façade options and impact on HVAC system design

This paper presents a simulation study employed for the optimization of the building envelope for a new university building located in Montreal (latitude 450N). The study involved simulation of façade design options, taking into account maximization of daylight, reduction in electricity consumption for lighting and optimal control of solar gains. Combinations   of   motorized   shading   devices   in conjunction with controllable electric  lighting systems are investigated in detail. Transient simulations also considered the impact of motorized shading and light dimming on HVAC system sizing and energy consumption for heating/cooling. The resulting energy savings and thermal comfort using an optimum design strategy are discussed.