فهرست نشریات علمی دسترسی آزاد ایران

Due to the expansion of the energy crisis in the world, the use of methods that lead to the reduction of energy consumption in buildings has become an important challenge. In this regard, various methods have been presented, one of which is the use of passive systems based on the sun. The passive solar system, which consists of a sunspace in combination with a solar chimney, can be effective in heating of space in the cold climate. However, investigation of using this system on building energy consumption is one of the main research gaps in this area. Accordingly, the main goal of this research is to evaluate the amount of energy consumption in a passive solar system consisting of a sunspace in combination with a solar chimney. In this regard, the research question can be asked as follows: How can the use of the solar system on the south side of the building in a cold climate affect the reduction of the building’s energy consumption? This research is based on the simulation of a building in the Energy plus software. In this research three case studies are selected as follows: a single room with an opening in its south façade (Type A); a single room whit a sunspace located in tis south façade (Type B); and a single room with a sunspace and a solar chimney located in its south façade (Type C). Indoor air temperature, cooling and heating load of the building, and the financial assessment are three parameters which analyzed in per case studies. The results show that the use of sunspace and solar chimney on the south front of buildings in cold climates can bring better energy efficiency. This system can reduce inside air temperature by 3 ℃ in January and increase it 2 ℃ in July compared to Type A. it heating and cooling loads are less than two other case studies and at last, the highest energy saving is achieved in Type C building, so that the return on investment from saving energy consumption in this building will be about 8 years.