The optimum design of motorized PV shade and its impact on energy flow of a case study

Motorized shades have a considerable impact on energy demand reduction of building, combining it with lighting systems and PV panels will make it more effective. In this article, three shade design, two lighting control system (on/off, dimming) and the option of using PV cells in shades have been investigated. The best combination of above cases which maximizes annual electrical energy saving and minimizes return on investment’s time is found. Annual saving is calculated using hourly simulation of lighting, solar heat flux and electricity generation. Results showed that the optimum combination have the saving potential of 792kwh annually.