Energy Consumption Optimization in an Existing Office Building Using Double-Glazed Windows and Photovoltaic Systems Across Two Climates

Buildings are one of the major energy-consuming sectors in society; therefore, optimizing building energy consumption is of great importance. Also, windows are known as the weakest part in buildings and most of the building's energy is wasted through them. Therefore, specific measures must be taken to optimize the performance of windows. As a result, improving the quality of windows can play an effective role in reducing environmental damage and saving energy consumption. Accordingly, this study examines the impact of using double-glazed windows and installing photovoltaic systems on electricity and gas consumption as well as CO₂ emissions in an existing office building located in Tehran with a warm and semi-arid climate. The mentioned scenarios were also examined in the city of Tabriz with a cold and dry climate. Additionally, an economic analysis was conducted, and the payback period for all strategies in both climates was calculated. The results show that using double-glazed windows in Tehran led to a ۱۶.۱۸% reduction in gas consumption, and ۴.۶۴% of the total electricity consumption was produced by the photovoltaic system. Similarly, in Tabriz, the use of double-glazed windows resulted in a ۱۳.۱۵% reduction in gas consumption, and ۳.۳۱% of the electricity was generated by the photovoltaic system. The most cost-effective solution in both climates is the use of photovoltaic systems. Additionally, the greatest impact on reducing CO₂ emissions in Tehran was achieved through the installation of photovoltaic systems, and in Tabriz, through the use of double-glazed windows.

کلیدواژه ها:

Building energy optimization ، Economic Analysis ، Photovoltaic Solar System