• فهرس المقالات Buffer tank

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        1 - Investigating the Effect of Buffer Tank Type on Technical and Environmental Performance of Solar Heating Systems in Iran
        Moein Mortazavi Somaye Yaghoubi Mehdi Jahangiri
        Providing the right temperature in the living space has been one of the needs of human beings today, and therefore the use of different types of cooling and heating systems in buildings has become common. By replacing the energy from fossil fuels with heating and coolin أکثر
        Providing the right temperature in the living space has been one of the needs of human beings today, and therefore the use of different types of cooling and heating systems in buildings has become common. By replacing the energy from fossil fuels with heating and cooling systems with renewable energy, there will be significant effects on optimizing energy consumption, reducing the growing trend of global temperatures, reducing air pollution, and reducing fossil fuel consumption. In this paper, the technical-environmental performance of solar heating systems in Iran and the effect of buffer tank type on their performance using Valentin T*SOL software in 3 different configurations and in climatic conditions of 3 cities of Tabriz, Tehran and Shiraz have been studied. Is. The studies showed that in the first arrangement (using a hot water tank) in Shiraz had the greatest savings in natural gas consumption and the greatest reduction in CO2 emissions. In the second arrangement (using two hot water tanks) in Tabriz, the highest savings in natural gas consumption have the greatest reduction in CO2 emissions and the amount of energy produced, and in the third arrangement (thermosiphon system) in Shiraz with the greatest savings in natural gas consumption and Reduced CO2 emissions have been associated. The results of the present work show the need to study different systems for stations located in different climates to find the most suitable system for each station. تفاصيل المقالة
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        2 - The feasibility of using solar heating in the Yazd hospital: A case study
        Mahshid Babaei Mehdi Jahangiri Farhad Raeiszadeh Gholam Reza Aboutalebi Abbas Jafari Arya Nariman
        The most widespread use of solar energy as an alternative to fossil fuels is for heating. Considering the location of Iran and its location on the global Sunbelt, the aim of the present work is to provide part of the heat needed for the treatment space of Seyed Al-Shohd أکثر
        The most widespread use of solar energy as an alternative to fossil fuels is for heating. Considering the location of Iran and its location on the global Sunbelt, the aim of the present work is to provide part of the heat needed for the treatment space of Seyed Al-Shohda hospital in Yazd by using a flat plate solar collectors system. A one-year dynamic simulation has been performed using TSOL Pro 5.5 software, and energy-environmental-economic (3E) analyzes have been performed on the proposed system. The difference between the present work and the past works is that the provision of space heating and sanitary spa needed for a treatment space has not been done yet. The results of the investigations showed that about 2MWh of solar heat is produced, which prevents the annual release of about 630kg of CO2 pollutants. Examining the system loss diagram also shows that the bottleneck of energy loss in the system under review is the hot water storage tanks, which have an annual energy loss of about 800 kWh. Financial analysis showed that the price of each kWh of solar heat production and the internal rate of return (IRR) are 0.0021 euros and 2.23%, respectively. The results of the present work indicate the excellent potential of Yazd in the field of using solar water heaters (SWH) for heating treatment spaces. The results of the present work can be used as a roadmap to help energy decision-makers and investors in this sector and accelerate the development of SWHs. تفاصيل المقالة
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        3 - Techno-enviro assessment and dynamic energy balance simulation of the domestic-scale solar heating system in Lebanon
        Mehdi Jahangiri Hasan Ali  Lotfi Nagafabadi Esmaeil  Moradi Seyed Mohammad  Noorbakhsh Hamed  Saghaei Hussein A.  Kazem Miqdam Tariq  Chaichan
        Statistics show that the residential and service sectors consume a large amount of the total generated energy in every country, most of which is spent for space and water heating. Solar water heater (SWH) as a recently developed technique can be used for supplying most أکثر
        Statistics show that the residential and service sectors consume a large amount of the total generated energy in every country, most of which is spent for space and water heating. Solar water heater (SWH) as a recently developed technique can be used for supplying most of the energy consumption which is necessary to be considered for social and economic development and continuously improving the quality of life. Practical measures of SWH for space and water heating have not been developed enough and no feasibility study has been conducted on the subject in Lebanon. To do so, using the energy software such METEOSYN and TSOL as very important pre-fabrication tools for the simulation, modelling and analysis of every management applications for energy development-based systems, we study the potential of using domestic-scale SWHs in residential apartments at 2 stations in Lebanon. The results show that Tripoli station, which supplies 37.8% of its total heating needs, is more suitable than Riyaq, which could provide for 32.1% of its total needs. The results also demonstrate that both stations produce 2915.7 kWh for space heating and 5403.7 kWh for water heating annually using SWH. This method prevent the emission of 2.4 tons of CO2 pollutant gas annually based on fossil fuels. تفاصيل المقالة