Developing an IoT-based electrochromic windows for smart buildings

ABSTRACT Different solutions have been investigated to reduce energy consumption in buildings in recent years. The use of smart windows to change the solar irradiation entering the building and to reject the solar heat has been one of these approaches. An IoT-based smart electrochromic window was created for this study, and both its technical stability and functionality were assessed in a laboratory environment. For six cities in different climate classes in Iran in 2019, simulations revealed that the indoor horizontal illuminance had a higher priority than the temperature in controlling the transparency of the windows during the first six months of the year. And it resulted in an average reduction of about 45% in the energy used for lighting and cooling in a medium-sized building. Additionally, the proposed window's energy efficiency varied according to climate, with arid climates having the highest efficiency and continental climates having the lowest. HIGHLIGHTS IoT-based Smart Electrochromic Window. Control algorithms for smart electrochromic windows. Simulation of the energy consumption in buildings.