Showing 11 results for Energy
Mrs Arezoo Momenian, Dr Morteza Mirgholami, Dr Azita Balali Oskoyi, Dr Aida Maleki,
Volume 0, Issue 0 (3-1921)
Abstract
Considering that more than one third of energy consumption is related to residential areas, proper planning and design of neighborhoods according to the climatic conditions of each region can be an effective step towards reducing energy consumption. It aims to optimize energy consumption in the residential blocks of Rushdieh neighborhood in Tabriz. Investigating and understanding the energy consumption situation in Rushdieh neighborhood of Tabriz, its capabilities and bottlenecks in planning is very important, if they are not paid attention to and there are no efficient strategic plans, it will lead to an increase in social, economic and environmental instability. According to its nature, the research method is descriptive-analytical and practical in terms of purpose. It is related to the intended goals of the research, the statistical population of the research is the professors, experts and elites of urban planning, which has been used to examine the indicators and strategies. The method of selecting people was targeted and snowball. Finally, the results showed that the formulation of policies, practical measures to improve the design of main roads and local accesses in the direction of neighborhood air conditioning should be emphasized as the most important strategy. In order to reduce energy consumption, the development of neighborhood design policies and residential blocks with the goals of using wind energy to reduce energy consumption have been placed in the second and third ranks of this prioritization, respectively.
Alireza Entezari, Fatemeh Mayvaneh, Froogh Khazaeenejad,
Volume 20, Issue 56 (3-2020)
Abstract
The purpose of this research is to study the comfort conditions and determine the best measures for design and architecture compatible with the climate in Yazd. In this regard, the climatic data of Yazd city has been used in EPW format during the period (1981-2017). The results of the study of temperature and relative humidity also showed that temperatures of more than 38 ° C are visible in June and July. This suggests the need for a shadow in the architecture of the climate. In July, the discomfort conditions prevail over the entire day. From June to October (midday to midnight), midnight hours due to low humidity (38%) and high temperatures, conditions of discomfort and drought are very visible. The highest humidity is in the cold months of the year. In the wind hours of February to May (February to April), there is a discomfort. Also, according to the overall radiation pattern at different hours of the day, it was also shown that 25% of the daylight hours is very high and non-comfort, and 8% are in comfort conditions, which is more related to the cold weather of the year and the early hours And the end of the day. In general, due to the climate of Yazd city and the results of analysis, 20 strategies for architectural design have been used.
In general, due to the climate of Yazd city and the results of analysis, 20 strategies for architectural design have been used.
Reza Reza Borna, Nasrin Nasrin Jafari, Farideh Farideh Asadian,
Volume 20, Issue 57 (6-2020)
Abstract
In order to understand the total consumption of buildings and accurately calculate how much energy each building uses, taking in consideration all the building's lifecycle phases is essential. In order to select the correct methodology for the main study, the researcher began with the determination and the parameters that would have been researched, as well as the analysis and comparison of the different methods used by other researchers to achieve similar goals. The following parameters define the final results and are stabilized or examined to determine their actual effect: A- Constant parameters: 1- Climate data 2- and data on the use of the building: B- variables: 3- Design data: 1- orientation 2- window to wall ratio 3- aspect ratio. This research uses a survey followed by a computer modeling methodology to achieve the goal of providing architects with techniques that reduce energy consumption in building units. To obtain reliable results that are useful to the construction industry in the country, the researcher has ensured that the virtual environment created in the modeling process mimics a typical building environment of Tehran units. Research has shown that passive design techniques have a major impact on the energy consumption of buildings. A significant reduction in consumption (67 percent) was noted when the orientation and percentages of the opening on the wall were changed. In summary, this study has shown that the application of passive, economical and simple design techniques has a major impact on the energy consumption of the unit rooms. If the architects take these ideas into account during the design process, the buildings will take on more responsibility for the environment and consequently reduce carbon dioxide emissions.
Zahra Hedjazizadeh, Aras Khosravi, Seyed Asaad Hosseini, Alireza Rahimi, Ali Reza Karbalaee Doree,
Volume 21, Issue 63 (2-2022)
Abstract
One of the most important energy sources in the world is solar energy, which is a renewable resource and does not cause any damage to the environment. Which all of these features justify using it as a clean energy source and economically viable cost.. Due to the relatively large area of the Iran in low latitudes and relatively dry climatic conditions, in terms of solar energy utilization it uses excellent conditions. Solar power plants are considered as power generation and transmission networks whose is important that the location features of their construction sites are effective in reducing the risk of investing in solar energy. In this study, using geographic information system and fuzzy valuation method for the criteria and method of weighing (AHP), was considered the potential of the Kavir & desert region and Makran coast for the purpose of obtaining energy from the sun. For this purpose, were used the 14 criteria related to the climatic, infrastructural, and technical and physical conditions of the area. In order to overlap the fuzzy layers were used the usual operators, Gamma, Product and also the Sum Weighted Overlay operator to compare and present the appropriate result. Each of the operators has a different sensitivity to the fuzzy overlap of the layers. For this reason, was considered the Gamma 0.9 operator, due to the high sensitivity for building power plants with high electrical power generation and the Sum Weighted Overlay operator, for the construction of smaller capacity plants. In the overlay map, using the Gamma 0.9 operator, about 2%, and in the overlay map with the weighted operator, about 33% of the study areas were found to be very suitable for the construction of solar power plants.
Pariz Amiri Ade, Saeed Tizghalam Zenozi, Mehrdad Javidi Nejad,
Volume 22, Issue 65 (6-2022)
Abstract
this study is designed to investigate the impact of micro climatic factors on optimizing energy consumption in Tehran urban buildings. The present study is of applied purpose and analytical method. Libraries and documents were used to collect the required data. Design Builder software was used to achieve the purpose of the research. The information given to the software is the thickness of the walls: exterior 20 cm - internal 15 cm, south windows (double shell balcony with 40% glass), northern windows 30%, brick exterior walls with natural ventilation were used. The results of this study showed that the orientation of the building on the site due to Tehran climate and the results obtained from Ecotect software was rotated about 25 degrees to the southwest to prevent direct sunlight from the east and west. And reduce the heat loads on the building. The volume of the building was designed in a stepped fashion, and while it could aesthetically enhance its strength, it could reduce the wind load on the upper floors. Green roofs were also designed on the exposed roofs, and according to the results of the analysis, the green roof can be very effective in reducing heating and cooling loads. The eastern and western fronts were also considered to be non-popping because of the results obtained in Design Builder software for daylight, which may result in dazzling workspaces such as kitchens sometimes day in the year.
Mohsen Pourkhosravani, Ali Mehrabi, Behnaz Shaikhshariati,
Volume 23, Issue 68 (4-2023)
Abstract
Solar energy is receiving lots of attention because it is one of the cleanest, cheapest and most available energies in the world.but solar radiation in different parts is changing, thus, identifying appropriate locations for implementation of solar energy is necessary. Accordingly the aim of this study was to analyze the potential of solar radiation and land surface temperature on the Loot desert using remote sensing and geo statistical technique. Results show that Earth's surface temperature fluctuates between 29 and 79 degrees Celsius in the Lut Plain. So that Earth's temperature increases to the east and north-east of the region. Also, the radiation energy reaching the surface in the Lut plain varies from 232.77 to 237.61w/m² in different parts of the Lut plain. So that the maximum amount of energy is related to the south of the plain, and the further we move to the north reduces the amount of energy.
Pariz Amiri Ade, Saeed Tizghalam Zenozi, Mehrdad Javidi Nejad,
Volume 23, Issue 69 (7-2023)
Abstract
Before the modern era, cities were built on a scale that did not change the environmental balance significantly. With the expansion of population and the expansion of cities and the conversion of settlements into big cities and metropolises, new conditions have emerged which show that cities today make their own climates. The new climates created in these areas are completely different from their predecessors. In this study, we try to use urban and architectural solutions in the Saadat Abad area of Tehran to reduce energy consumption. Urban and architectural variables including street and sidewalk width, green space and trees, materials, dimensions and directions for openings and energy entry paths, roof, wall width, porch, passive heating control (canopies, curtains and systems) Pore controls). So first, we examined the climate and climate of Tehran and Saadat Abad. Then, model the current status of Saadat Abad using simulated software to evaluate ambient and building temperature. The results of the study showed that improvement of outdoor thermal conditions and bio-closure of residential buildings. Reduction of direct and indirect thermal energy loss through exterior shell of buildings. Upgrading of the exterior shell climatic design knowledge of the building on the southern flank of central Alborz mountain range of Tehran.
Tara Heidari Orojloo, Dr Afshin Ghorbani Param, Dr Faramarz Hasanpour,
Volume 23, Issue 69 (7-2023)
Abstract
rchitecture is always influenced by various indicators, the most important of which are climatic and physical-spatial indicators. These indicators are well observed in traditional homes and have played an important role in the use of clean energy. In this study, the aim is to study the climatic and spatial indicators of traditional architecture of Shiraz houses in order to provide a suitable model for housing design in order to use clean energy. The research method is descriptive-analytical and based on data collection through a questionnaire. The validity of the instrument was confirmed by elite and the reliability was confirmed by Cronbach's alpha above 0.70. The statistical population of the research consists of 27089 experts, specialists and people familiar with the architecture of the building and a member of the Engineering System Organization of Fars Province. The number of samples according to Morgan table is 384 people. The result of one-sample t-test showed that all studied climatic and spatial variables including green space, proportions and composition of architectural elements, materials, sustainable architectural design of spaces, building orientation, organizing spaces, water use, maximum use of wind , The use of light and providing coolness with shade at a level less than 0.05 were significant and in terms of the statistical population, were in a good condition. Among the spatial and climatic variables of architecture, the most impact was related to the orientation variable with a value of 4.03 and then green space with an average of 3.85. The regression result showed that the most effective variables in the design of modern houses are related to the variable of proportions and composition of architectural elements with a value of 0.151 units, ie 15%.
Mr Meysam Zekavat, Mrs Mansoureh Tahabaz, Mr Mohammad Reza Hafezi,
Volume 23, Issue 70 (10-2023)
Abstract
Buildings are one of the main pillars of economic and social development of countries that consume a large part of energy and natural resources. The purpose of writing this article is to calculate the energy consumption of a building in one year, determine the energy label and then optimize some of its features in order to reduce construction costs and reduce energy consumption of the operation phase. Is. The study area is common residential buildings in Tehran. The research method to achieve this goal is as follows: First, according to the licensing statistics of Tehran Municipality, a 5-storey southern building was selected on a land with an area of 320 square meters and an infrastructure of about 1100 square meters, which represents a large number of buildings in Tehran. Be. Then, by simulating the building considered in Builder Design software, the amount of gas consumption is 145.53 kWh per square meter, electricity consumption is 81.25 kWh per square meter and a total of 226.79 kWh per meter. The square was calculated per year. With this consumption, according to standard 14253, the building receives energy label C. Then, with the aim of reducing the cost of construction and energy consumption during operation, it was optimized with a genetic algorithm. Research variables, type of exterior wall (pottery or Leica), exterior (stone or brick), type of window glass (plain or low emission), type of gas between the layers of window glass (air or argon) and the ratio of the window to the south front surface (15 % -30% -45% -60%) were built. The results indicate that the best possible scenarios for the exterior facade, stone, low-emission double-glazed windows with argon gas, the outer wall of the pottery with a window-to-south front ratio of 22.5% or Leica, with a window ratio At the level of the southern front, it is 37.5%.
Doc. Zahra Ghassabi, Doc. Hoshang Ghaemi, Mr. Ebrahim Mirzaei,
Volume 25, Issue 76 (4-2025)
Abstract
The structure of deep moist convection can be influenced by wind shear, available potential energy of convection, relative humidity and vertical distribution of each of these variables, along with other effective factors, among which wind shear plays a more important role in creating convection. Due to the large and synoptic scale processes, along with the adjustment of the available potential energy for convection and the convection inhibitor, create suitable conditions for the creation of convection. The role of the large-scale average causes the reduction of the convection inhibitor, but the vertical velocity of even a few centimeters per second can have an obvious effect on the environment sounding. Also, the presence of potential instability is usually considered an important factor in the initiation of deep moist convection. It can be seen that when the temperature reaches the critical point and the convection inhibitor is removed, moist deep convection begins. In the case that the air parcel that rises above the lower stable layer may have a low relative convective inhibition energy and a high relative free convective potential energy, which causes the support of deep moist convection. The warm air mass continues the initiation of updrafts, and the subsequent development of convection depends on parameters such as vertical wind shear and the inversion cap of the environment, among other parameters. Large-scale convective systems can be released with less forcing due to the massive rise of the air mass on the surface of the front to the level of convection.
Mr Meysam Zekavat, Dr Mansoure Tahbaz, Dr Mohammad Reza Hafezi,
Volume 25, Issue 76 (4-2025)
Abstract
Buildings are one of the main pillars of social and economic development of countries that consume a large part of energy and natural resources. The share of this part of energy consumption is 30-50% on average. Also, in our country, based on the energy balance sheet of recent years, about 33% of the energy produced is related to the domestic, commercial and public sector, i.e. the construction sector. The purpose of this research is to investigate the effect of the location of the building on its energy consumption. The district of the research is the common 4 and 5-story residential buildings in District 5 of Tehran, on Ferdous Sharq Blvd. The descriptive-analytical research method is based on organizational and field data collection, by selecting 6 similar residential blocks and in different lighting positions, different data were collected. These 6 blocks are completely the same in terms of land area, infrastructure area, number of floors, heating and cooling systems and other characteristics, and the only difference between them is their location in a passage. Then, using simulation in Design Builder software, their energy consumption was calculated and compared. The results of the research indicate that the average energy consumption with an accuracy of 98%, the northern blocks, 7 261, the southern blocks, 11 247, the total blocks, 5 254, kilowatt hours per square meter per year, which is about 3 times the ideal building. . Northern blocks consume about 5% more energy than southern blocks. A block that receives light from 3 sides, north, south and west, consumes about 11%, more than the average, and a block that receives light from 2 sides, north and south, consumes about 5%, less than the average. North blocks, energy label D, south blocks, except for the end block that gets light from three sides, north, south and west, get energy label C, and as a result, south blocks generally perform better in terms of energy consumption.
