چكيده به لاتين
Abstract
Energy demand is one of the current challenges faced by global societies, and climate change along with rising temperatures can significantly impact the level of energy demand. Unfortunately, to ensure the comfort of employees and visitors, there is greater reliance on mechanical heating and cooling systems, which leads to increased energy consumption within buildings. The key proposed solutions for achieving sustainable architecture include methods such as solar greenhouses and green wall coverings, which are considered passive strategies. In this study, various scenarios, including a base building, solar greenhouse, and green wall connected to the southern balcony of the building façade, were modeled using DesignBuilder software. The results showed that energy consumption was optimized by 8.91% with these strategies. The solar greenhouse demonstrated a 15.95% savings in heating energy consumption during a six-month winter period, while the green wall was effective in reducing cooling energy demand by only 4.72% during a six-month summer period. Each system had its own specific impact on reducing energy consumption.
By functionally integrating the solar greenhouse in winter and the green wall in summer, the comfort index in the base building during July improved from 1.17 units to 1.05 units, and the comfort index in January improved from -1.76 units to -1.70 units. Furthermore, the results indicated that air humidity decreased with the presence of the solar greenhouse and increased with the green wall. The indoor air temperature in the cold season increased with the implementation of the solar greenhouse, rising from 15.46°C to 16.07°C in January, and decreased with the green wall from 29.58°C to 29.49°C in July. Ultimately, the auxiliary elements of the solar greenhouse and green wall, relying on their green covering, can reduce the heat transfer absorbed from the sun in summer and mitigate severe cold in winter through their external layers. Many parameters influence this, such as the geographical orientation of the glazed façade relative to the sun, the type of greenhouse glass, and its dimensions.
Keywords: Greenhouse - Green wall - Office building - Energy consumption – DesignBuilder – Tehran
