List of Articles انرژی زمین گرمایی

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  1 - Feasibility of using geothermal energy in building in order to reduce carbon dioxide pollutant emissions in environment (Case Study: Hamedan)
  mahdi shaabanian mohammadhadi kaboli ali dehghanbanadaki leila zare
  10.22034/jest.2020.47032.4810
  Background and Objective: The thermal behavior of underground buildings is different from that of above ground buildings. The approaching temperature of the inner layers of the earth to the average annual outdoor temperature reduces the heat exchange of these buildings More

  Background and Objective: The thermal behavior of underground buildings is different from that of above ground buildings. The approaching temperature of the inner layers of the earth to the average annual outdoor temperature reduces the heat exchange of these buildings compared to buildings on the ground. Reducing energy consumption reduces greenhouse gas emissions. The purpose of this study is to evaluate the feasibility of using geothermal energy in buildings to reduce carbon dioxide emissions in the city of Hamedan with cold climatic conditions in 2019. Method: The simulation was performed by using version 8-1-0 of Energy Plus software. In the model, a standard 900 Ashrae sample space with residential usage was considered. At first the building was located on the ground as default and its energy consumption was set to 0/424 MWh /m2. In later stages, the sample is gradually placed in depth in successive steps equal to 0.5, 1, 1.5, 2, 2.5 and 3 meters. Findings: findings showed that in each depth, 14.51%, 28.38%, 44.56%, 57.25%, 74.70% and 79.07% of the annual energy requirements of the sample space has been reduced. On the other hand, in each scenario, the carbon dioxide pollutant emissions as the main greenhouse gas, has been declined to 0.65, 1.27, 1.99, 2.57, 3.35 and 3.55 percent, respectively. Discussion and Conclusion: Therefore, It was concluded that Placement of buildings under the ground reduces carbon dioxide pollutant emissions in environment.   Manuscript profile
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  2 - Technical-Environmental Economical Feasibility Study of Geothermal Heat Pumps
  Farideh Atabi Seyed Mohammad Reza Heibati Setareh Mehrkhou
  AbstractConsidering the scarcity of natural fossil energy and dispersion of pollutant gases from their products,it seems utilizing cheaper and cleaner energy sources such as geothermal energy are vital.One of the applications of geothermal energy is geothermal pumps. Th More

  AbstractConsidering the scarcity of natural fossil energy and dispersion of pollutant gases from their products,it seems utilizing cheaper and cleaner energy sources such as geothermal energy are vital.One of the applications of geothermal energy is geothermal pumps. The compressor of geothermalpumps utilizes the thermal energy of the earth to provide thermal load and hot water for the buildingsby consuming electricity. There are two most common geothermal heat pumps including a systemwith vertical and horizontal ground heat exchanger.In the present study, in ventilation calculations, the required thermal load of a typical four-story 12-unit residential building located in the East of Tehran was calculated separately based on the actualoperational data. Each story has an area of 565 square meters. According to the thermal properties ofsoil and the annual average temperature of the abovementioned area, the appropriate geothermal heatpump was selected. Subsequently, three scenarios were created through Perform software on the basisof the primary costs of purchase and installment of geothermal heat pump and its electricityconsumption. The cost-effectiveness of the studied system with that of the previous one was comparedtechnically, economically and environmentally on the basis of carbon credit costs in the world market.The results of this study indicate that the application of geothermal heat pumps decreases the totalemission of pollutants across implementing the project by 3759 tons of CO2 equivalent. Furthermore,67,000 giga joules of natural gas will be saved at the end of the project. Manuscript profile
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  3 - Technical, Economical and Environmental Feasibility Study of Urban Heating System Replaced with Geothermal Energy in IRAN
  Younes Noorollahi Hossein Yousefi Ali Hossein Rezayan Hadi Farabi Asl
  Background and Objective: The exploitation of geothermal energy for environmental and regional heating is one of the most appropriate and the most common methods of direct use of the earth heat. Having decades of experience in vast regions of the world has provided usef More

  Background and Objective: The exploitation of geothermal energy for environmental and regional heating is one of the most appropriate and the most common methods of direct use of the earth heat. Having decades of experience in vast regions of the world has provided useful information on how to execute geothermal projects and the obtained findings. Methods: This study has investigated the primary conducted measures to use geothermal energy directly. Then, using GIS and Iran’s geothermal atlas, it identifies cities located in geothermal areas. Afterwards, it has investigated the consumption of the main four energy carriers (Kerosene, crude, gas oil, and natural gas) in domestic, business, and public sections for heating use in the above said cities and finally, it evaluates the economic and environmental considerations obtained from heating system replacement fitting the geothermal energy. Findings: The results show that the exploitation of geothermal energy to heat buildings and domestic, business, and public spaces in cities located in geothermal areas will consume annually more than 378 million lit of Kerosene, 159 million lit gas oil, 64 million lit of fuel oil, and 1,370 million m3lit of natural gas which can be allocated to the exports and more than 725 million dollars can be accrued annually to the country. Calculations related to the cost of establishing the urban heating concentrated system has been conducted for Sarein and it was shown that the related amount almost costs 3.2 milliard toman and the amount of providing heating energy in each Kwh costs 107 toman. The return period of the capital in the current study has been estimated 3.5 (three and a half year). The decline level of fluid temperature passing through the transferor pipes and the output of the aforementioned system (considering reinjection into the earth and the heating loss of the fluid transferor pipes) have been estimated 3 centigrade and 46 percent, respectively.     Manuscript profile
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  4 - تامین آسایش حرارتی فضای معماری در اقلیم گرم و خشک ایران با بهره مندی از رفتار حرارتی زمین(مطالعه موردی: استفاده از زمین در خانه‌های سنتی مناطق گرم و خشک ایران)
  محمد رضا نادی دکترعباس ملک حسینی حسین صالحی احمد فتحی نجف آبادی
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  5 - تامین آسایش حرارتی فضای معماری در اقلیم گرم و خشک ایران با بهره مندی از رفتار حرارتی زمین(مطالعه موردی: استفاده از زمین در خانه‌های سنتی مناطق گرم و خشک ایران)
  محمد رضا نادی دکترعباس ملک حسینی حسین صالحی احمد فتحی نجف آبادی
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