جستجوی مقالات مرتبط با کلیدواژه « بهینه سازی انرژی » در نشریات گروه « هنر و معماری »

Problem Statement: 

Global climate change is garnering increasing attention as a critical issue. Governments and organizations have implemented numerous effective measures to mitigate its impact and continue to do so. Constructing zero-energy homes necessitates a range of strategies, particularly applicable in warm climates. This study aims to outline key strategies for erecting highly efficient structures in hot regions, thereby mitigating the adverse effects of climate change and fostering sustainable, zero-energy buildings.

Significance and Need: 

Investigating climate-adaptive solutions for zero-energy buildings in hot climates is imperative. The research seeks to facilitate energy-efficient housing in warm regions, benefiting current and future residents.

The primary goal is to achieve zero-energy homes in hot climates by regulating shade, humidity, and temperature differentials between day and night. The research aims to minimize energy demand in warm climate dwellings.

Employing a descriptive-analytical approach, data were gathered through literature review, articles, and field studies. Strategies utilized in zero-energy homes in Qatar were examined to inform the research.

The study delineates strategies converting single-family homes in hot regions into zero-energy structures. Limited empirical research exists for hot climates, prompting this study to bridge the knowledge gap regarding energy performance in such dwellings. Further exploration of these factors could inform future investigations.

A large part of Iran is located in a hot and dry climate and due to it, has a high amount of sun absorption. Indoor temperature comfort systems play a major role in energy consumption in various parts of the building, and by applying passive design methods such as solar chimneys can help maintain comfortable thermal conditions in buildings and reduce energy consumption. In this study, a thermal performance evaluation of the temperature distribution was performed by Design Builder simulation program in a building with office use in Kerman. Is. Then, by applying the chimney form variables, temperature changes and thermal comfort were studied at different angles to improve the effectiveness of solar chimneys at angles of 40 to 90 degrees in 10 degree steps relative to the horizon by solving the parameters of average air velocity and The volumetric flow rate of the flow was determined and finally, using the fluid dynamics (CFD) method of Design Builder software, the temperature distribution and the flow of air were investigated. Percentage can optimize the total energy consumption by about 16% and increase the thermal comfort index from its average value in July from 2.97 units to 2.25 units. Meanwhile, the average value of thermal comfort index in January has risen from -2.93 to -2.24 and its values ​​are closer to the standard range of Ashrae 55 and ISO 7730. However, an independent solar chimney is not able to meet the thermal comfort significantly in extreme hot weather,, and other solutions are needed to provide proper ventilation.

Bank buildings are considered as one of the most energy consuming centers despite its important role in urban sustainable design and architecture. This research has attempted to investigate the effectiveness of utilizing Green Architecture characteristics and the principles of climate compatible architecture on reducing the amount of energy consumption in a central bank building. In pursuit of this purpose, the building was renovated by considering the principles and characteristics of green architecture and hot and dry climate-compatible architecture, for example, changing the plumping systems, replacing the old cooling towers with low consumption, high life span towers, creating concrete pools to save water and collect rain water, constructing the necessary foundations for using solar panels, building and providing green spaces, and using intelligent lighting system, insulating panels, and local materials and resources. In the next stage, Design Builder software and other field studies such as monitoring energy bills were used to measure the effectiveness of this renovation on the matter of decreasing energy consumption of this bank building were studied. The findings of Design Building and the analysis indicate that the performed renovations have led to a reduction in carbon dioxide emissions, have decreased the annual consuming fuel and the consumption of electricity and gas. Moreover, the climate related findings show that the annual fuel breakdown have improved in the renovated building in comparison with the old building. As a result, it can be said that applying the characteristics of green architecture and observing the principles of climate compatible architecture leave significant influences on reduction of energy consumption and leads to the comfort and welfare among the bank staffs and customers.

Given that the government intends to serve out the second phase of the project is targeted subsidies And also one of the most widely used program, energy agencies and state enterprises are most common, In this paper, we explore economic solutions to reduce energy consumption Jask for residential buildings that are owned by Iranian police (as the case study), pay. In general, one of the sources of energy waste in buildings, the external wall of the building is Use insulation and double-glazed windows can be effective. Firstly, the amount of energy wasted in buildings calculated The insulated state in both night and day compared Finally, calculate the difference in costs between state and non-insulated and insulated building Using Excel for Engineering Economics and Economic Assessment strategies are discussed. Calculations show that the cost optimization measures Jask optimization and building insulation to reduce energy loss, which is followed by most of the cost benefit makes. Taking the annual inflation rate of 10% and 15% to the cost of electricity, cost less than 39.16 and 44.31 percent interest rate there.

The energy consumption of the buildings is highly dependent on the specifications of its envelope. Windows have a significant effect on the thermal specification of the building envelope, because of their high thermal conductivity and direct solar transmittance. Hence, specifying the best window-to-wall ratio (WWR) is very important in all climates. This study aims to specify the effective variables on optimizing the window-to-wall ratio for the southern façade in Kerman, based on the thermal specifications of the building envelope. The research method is a combination of field surveys and software simulations. In the field survey method, window to south façade ratio of 26 single-spaces in 16 traditional residential and educational buildings in Kerman were measured, drawn, and analyzed. The results showed that the window-to-wall ratio of 5% to 15% had the most frequency in the surveyed samples. In the software simulation method, window and wall heat transfer coefficients were analyzed rather than SHGC (solar heat gain coefficient), and their effects on annual load were determined. Finally, the 30% ratio was specified as the most efficient window-to-wall ratio for the southern façade in Kerman. According to the results, it can be concluded that if the only thermal analysis is considered, the optimum window-to-wall ratio in the southern façade in Kerman is 15% while using the single glazed window; and it is 30% while using the double glazed window if the SHGC is not less than 0.4. The results also revealed a high dependency on the buildings’ annual thermal load to windows’ SHGC. So, finally, modifications were proposed in the 9th appendix of Code 19, to include the SHGC factor.

Special attention on controlling energy consumption in different scales become increasingly important nowadays and a more comprehensive review on urban planning can be effective to achieve energy efficiency targets in this level. Germany has found its place as one of successful countries in improving energy efficiency in architecture and urban planning on a worldwide scale. Recognizing organizational system and its application in urban planning can be helpful for similar activities in Iran. In order to achieve the right result, assessment of defects and difficulties in optimizing energy consumption is essential. The approach used in this research is a comparative case study. The library sources and collected information from online credible sources is used in research process. After collecting the data and a review on similar examples, urban planning system of both countries, Germany and Iran, will be introduced. In a comparative case study, the causes of failure in Iran are described and research hypotheses are developed. The results obtained in this study indicate that the main differences in urban planning of Iran and Germany, on one hand can be in urban planning system and participation of non-governmental organizations, and on the other hand can be the lack of related topics of energy efficiency in urban planning documents. In a comprehensive and large scale overview, the ineffectiveness of activities in energy planning can be related to the lack of a national master plan to coordinate all organizational bodies of power in Iran. In surveying aforesaid, attempts are taken to eliminate defects in order to improve decision-making and organizing urban planning system properly, while introducing a framework to strengthen optimizing energy consumption program in Iran. In this regard, a framework has been provided to continue the researches in urban planning and energy consumption by emphasizing on Germany’s experiences which can be utilized as a sample of leading countries experiences in achievement of energy efficiency goals.