فهرست نشریات علمی دسترسی آزاد ایران

Residential and commercial buildings generate substantial demand for electricity and natural gas, primarily for heating, cooling, lighting, and operating appliances. This study utilizes EnergyPlus software to examine the impact of photovoltaic (PV) solar shading devices, which serve dual functions of reducing building cooling loads through shading and generating renewable electrical energy, on the energy performance of a single-story residential building in Tianjin, China. Three solar shading devices are evaluated by varying their installation angles from 0 to 90 degrees in 10-degree increments. The simulation examines the impact of shading on monthly and annual electricity consumption and solar energy generation. Results indicate that while the building’s electricity consumption follows a consistent seasonal pattern dominated by heating and cooling loads, solar power production is highly sensitive to shading angle and seasonal solar position. Intermediate angles of 30 to 40 degrees optimize solar access year-round, maximizing annual electricity generation by approximately 15% compared to vertical panels and improving building energy self-sufficiency. In contrast, horizontal or near-vertical angles either reduce winter generation or limit summer production. The findings underscore the importance of tailoring solar shading design to climate and building demand profiles, highlighting the role of optimal panel angles in reducing grid dependency and improving energy efficiency in residential buildings.