بهينه‌سازي چند هدفي ميزان مصرف انرژي و آسايش حرارتي در يك ساختمان مسكوني

Multi-objective optimization of energy consumption an‎d thermal comfort in a residential building

مهندسي مكانيك

Thermal an‎d visual comfort in buildings significantly contribute to greenhouse gas emissions an‎d energy consumption. As a result, there is a critical need to improve building energy efficiency to reduce energy waste, pollutants, an‎d greenhouse gas emissions, which in turn mitigates destructive climate change an‎d enhances public health. Consequently, a substantial portion of energy research an‎d industry efforts are directed toward optimizing energy consumption in the building sector. While enhancing thermal comfort for occupants inevitably increases energy consumption, two primary objectives emerge: reducing energy use an‎d improving indoor environmental conditions. However, measures that benefit one often come at the expense of the other. Due to the multitude of factors an‎d approaches influencing these goals, designing a building that satisfies both is a complex challenge. Although traditional trial-an‎d-error methods may yield satisfactory results, achieving optimal solutions through such approaches is highly unlikely. Optimization techniques can significantly reduce building energy consumption while maintaining desirable indoor conditions. jEPlus is a practical tool that facilitates the configuration, management, an‎d parametric energy simulation in EnergyPlus, enabling complex parametric analysis, centralized output collection, an‎d result aggregation. This thesis investigates the simulation an‎d optimization of a residential building, focusing on the impact of various factors on occupantsʹ thermal an‎d visual comfort, as well as electricity consumption for heating, cooling, an‎d lighting. Additionally, challenges in optimizing these factors are addressed to find an optimal balance between ensuring thermal/visual comfort an‎d minimizing energy consumption by adjusting variables such as insulation type, insulation thickness, building orientation, lighting levels, etc. This is achieved using a combination of EnergyPlus, OpenStudio, an‎d jEPlus software. In this thesis, simultaneous optimization of thermal comfort an‎d energy consumption is conducted for the cities of Isfahan, Yazd, Rasht, Ban‎dar Abbas, Tabriz, an‎d Tehran. The optimal thermostat setpoints for heating an‎d cooling, building orientation angle, an‎d insulation thickness are determined for each city, considering visual comfort an‎d pollution levels.

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