Papers by Akbar Alidadi Shamsabadi
According to the statistics announced by Algeria’s Ministry of Energy and Mine, residential and s... more According to the statistics announced by Algeria’s Ministry of Energy and Mine, residential and service sectors account for 40% of total energy consumption of the country of which a huge amount is dedicated to space heating and sanitary hot water. Therefore, using solar water heater (SWH) for providing a major part of this energy demand seems necessary in line with socio-economic development and continuous improvement of standards of living. Applications such as space and water heating are not well-developed in Algeria and no need to say that using energy management software packages is an excellent solution for enhancing management applications of energy development-based systems. Therefore current study uses TSOL and MeteoSyn software packages to investigate the potential of using SWHs for a residential apartment in 37 stations in Algeria. Results indicated that In Salah, Tamanrasset, and Adrar stations that respectively accounted for 85.6%, 81.2%, and 76,7% of total thermal deman...
INTERNATIONAL JOURNAL OF RENEWABLE ENERGY DEVELOPMENT (IJRED), 2020
Innovative and more sustainable methods of supplying energy needs in the world have led to a chan... more Innovative and more sustainable methods of supplying energy needs in the world have led to a change in the dependency model for fossil fuels, including more integrated planning and adoption of new and motivating models regarding the use of renewable energy. Today, with the reduction of fossil fuel consumption in the world, the use of renewable energy has gained an important role in the global energy mix, but according to studies, the share of renewable energy in Iran's energy mix is very small. Therefore, the present paper attempts to present all potentialities for obtaining clean energy in Iran by assessing the current state of renewable energies. The fact that, in the present time, the real value of energy carriers is not appreciated properly in Iran, on the one hand, and the lack of willingness to invest in these energies in the private sector, which may have been less protected, on the other hand, has caused the consumption level of fossil fuels to remain unchanged, which may have some disadvantages, such as environmental damage, in addition to their utilization. The authors of the paper are of the opinion that, on the one hand, by finding solutions for bank investment problems, easing restrictive laws, providing bank with guarantees by investors, as well as modifying parts of the guaranteed electricity purchase contract for accepting foreign banks to provide loans and obtain financing, and on the other hand, by facilitating the process of obtaining land permits and connecting to these power plants, Iran is not far from reaching a reasonable rank in the world.
Energy Equipment and Systems, 2019
Existing fossil fuels do not meet the needs of modern societies and are almost coming to an end. ... more Existing fossil fuels do not meet the needs of modern societies and are almost coming to an end. Hence, governments can respond both to the needs of the people and the industry, by investing in the use of renewable energies. As well as saving fossil fuels, natural gas and even water. According to the research, renewable energy, especially wind energy, has been used in recent years and are able to satisfy some of the existing needs. The purpose of present study is to investigate the techno-econo-enviro use of domestic-scale wind turbines in Iran in order to select the optimal turbine according to the geographic location of each station in the country. At the present study, five types of wind turbines, including Generic 1kW, Generic 3kW, Generic 10kW, BWC XL 1.25kW and WES Tulipo 2.5kW have been used at all stations in the country to provide the most suitable type of turbine with the help of HOMER software and based on the geographic location of each station. The results showed that among all stations and types of wind turbines, the highest and lowest total net present cost (NPC) with 49131 $ and 11622 $ respectively are related to Zanjan and Alvand stations and Generic 1kW wind turbines. Also, the cost per kWh of produced wind electricity is 2.847 $ and 0.674 $ respectively at these stations. Also in the case of using hybrid wind-diesel system by Generic 1kW, Generic 3kW, BWC XL. 1.25kW, WES 2.5kW and Generic 10kW wind turbines at the all under study stations, annually generate a total of 246409, 213951, 212826, 122460 and 152030 Kg CO2 respectievely. Another point is that at Alvand, Arak, Babolsar, Iranshahr, Kashan, Khoy and Orumieh Generic 1kW wind turbine, at Anzali, Hamedan, Ramsar and Torbate Heydarie BWC XL. 1.25kW wind turbine, and at the 91 remaining stations WES 2.5kW wind turbine are the most economically feasible options.
Journal of Renewable Energy and Environment, 2019
Canadian researchers are now trying to exploit much more energy from solar sources, hydropower, w... more Canadian researchers are now trying to exploit much more energy from solar sources, hydropower, wind, and biomass. Given the fact that reducing the carbon pollutant level is a political priority in Canada, this paper studies the feasibility of providing sanitary hot water and space heating demands of a four-member family in 10 provinces in this country. The feasibility analysis was performed by T*SOL Pro 5.5 software, and radiation data were obtained by MeteoSyn software. Results indicated that the most suitable station in terms of using solar water heater was Regina, which supplied 35 % of the total heat load for space heating and sanitary hot water purposes. This accounted for 5074 kWh of heat for space heating (25 % of demand) and 3112 kWh energy for sanitary hot water (94 % of demand) using a 40 m 2 solar collector. In addition, results are indicative of an annual amount of saving up to 2080 kg of CO2 in the Regina station and an annual reduction of 984 m 3 in natural gas for this station. In conclusion, Canada has a potentially alluring market to utilize solar water heaters for providing sanitary hot water for the residential sector.
Journal of Renewable Energy and Environment, 2019
The electricity economy and its excessive consumption have become one of the main concerns of the... more The electricity economy and its excessive consumption have become one of the main concerns of the Iranian government for many years. This issue, along with recent droughts, shows the need to use renewable energy that is free and clean and does not require water. In addition, due to the high cost of cable-laying and maintenance of power lines, it is not at all an option at all distances over the development of the national electricity grid. Therefore, it is important to find a distance for farther distances so that the use of renewable energy systems can be superior to the national electricity grid. According to related studies conducted so far, nothing has been done in this regard in Iran untill private-sector investors realize that, for what distances from the national grid, the network development is not cost-effective compared to using renewables. Therefore, in the present work, by using NASA's wind and solar data, 102 stations in Iran were investigated using the HOMER software. The studied system is a solar-wind one backed up by batteries and diesel generator for emergency conditions. The results showed that the average total net present cost of the solar-wind hybrid system in Iran was to provide a daily average electricity load of 5.9 kWh of a residential building with a peak load of 806 W equal to $ 12415, which could on average provide 95.3 % of the building's needs by renewable energy. The average minimum distance from the national grid is 593 m for the cost-effective use of renewable energy.
Journal of Mechanical Engineering and Technology, 2018
The study of heat transfer phenomenon in microchannels has attracted researchers’ attention as th... more The study of heat transfer phenomenon in microchannels has attracted researchers’ attention as they have many advantages in the cooling of electronic components. In this numerical study, the effect of adding alumina nanoparticles to the water flow through a microchannel with some baffles embedded on the top and bottom walls is numerically discussed by using ANSYS Fluent software. The several cases including the effect of various volume fraction of nanoparticles (2, 4, 6, and 10%), Reynolds number of the inlet flow (10, 20, 30, 40, and 50), and the number of baffles and their heights on the heat transfer phenomena are investigated. The local Nusselt number, the average outlet temperature, and the streamlines are presented for representing the results. The results show that increasing the Reynolds number decreases the average outlet temperature. Moreover, the increase in the number of baffles causes an increase in the average outlet temperature since the formation of vorticities just behind of each baffle and results in a large heat transfer rate. As the baffles height increase, the strength and the area of the vortices increase and hence the heat transfer rate increases. However, an increase in the volume fraction of the nanoparticle increases the average outlet temperature which is due to the increase in conduction heat transfer of nanofluid.
International Journal of Renewable Energy Development, 2019
Biomass is a type of renewable energy that, in despite of its potentials and advantages including... more Biomass is a type of renewable energy that, in despite of its potentials and advantages including simple production technology, decreasing environmental issues, and energy generation capacity at the consumption site, has not been sufficiently utilized in Iran. Since, due to statistics, Isfahan enjoys remarkable prospects in terms of wind, solar and biomass energies, a combined system of indigenous energy sources for powering a cattle farm has been investigated and evaluated in this study. To evaluate the possibility of the optimal system for comparative reasons, the HOMER software was used. The designed hybrid system was a wind-solar-biomass generator that used a battery saver as backup. Although it seems that wind and solar energies have the highest potential for energy generation in Isfahan, the results showed that biomass, by itself, can provide the required power for a cattle farm. In fact, biomass energy was more economically efficient than wind and solar energies. Owing to the low electricity cost, generated from fossil fuels, in Iran, relative to a large number of countries, the findings revealed that using biomass for generating the electricity of a cattle farm will compensate the expenses by the mid-15th year and will generate profit for 9.5 years later. The results also showed that the solar cell-based hybrid system is cheaper than the wind turbine-based one. Regarding the price of per kWh of electricity produced, the results showed that the biomass generator system with the price 0.12 $/kWh is the cheapest, and the solar cell-based and wind turbine-based hybrid systems are 3.33% and 10.83% more expensive, respectively. The results can be used for electricity generation with minimum pollution and expenses in the same regions.
Journal of Energy Management and Technology (JEMT), 2019
It seems that studying the effect of heat recovery factor in combined heat and power (CHP) genera... more It seems that studying the effect of heat recovery factor in combined heat and power (CHP) generation can present new solution for preventing energy loss in various supply and demand sectors and for recovering the dissipated energy in order to enhance energy efficiency. This will certainly have desirable social and economic consequences. This study is the first attempt at investigating the effect of heat recovery factor on CHP generation in distributed generation by solar cells. HOMER is used for simulations and the studied location is Isfahan city. Three different scenarios for the fuel of generator and boiler are studied which include diesel for both generator and boiler (scenario 1), natural gas for both (scenario 2), and diesel for generator and natural gas for boiler (scenario 3). Results indicated that increasing the heat recovery factor reduces the fossil fuel consumption which in turn lessens the CO2 emissions and price per kWh of energy. Also, in all three scenarios using solar cells combined with generator and boiler will have a higher cost but it reduces the fuel consumption and CO2 emissions. It can also be concluded from the results that the cheapest scenario is scenario 2. Additionally, the scenario 3 is the most expensive one. The cheapest electricity generated is priced at 0.167 $/kWh. According to the results, the third scenario and hybrid photovoltaics (PV)-generator microgrid outperform in terms of producing environmental pollutants with emitting 3604 kg/y CO2 at their best.
Energy Strategy Reviews, 2019
This work presents a feasibility study on the provision of electricity and hydrogen with renewabl... more This work presents a feasibility study on the provision of electricity and hydrogen with renewable grid connected and off-the-grid systems for Bandar Abbas City in the south of Iran. The software HOMER Pro ® has been used to perform the analysis. A techno-enviro-economic study comparing a hybrid system consisting of the grid/wind turbine and solar cell is done. The wind turbine is analyzed using four types of commercially available vertical axis wind turbines (VAWTs). According to the literature review, no similar study has been performed so far on the feasibility of using VAWTs and also no work exists on the use of a hybrid system in the studied area. The results indicated that the lowest price of providing the required hydrogen was $0.496 which was achieved using the main grid. Also, the lowest price of the electricity generated was $1.55 which was obtained through using EOLO VAWT in the main grid/wind turbine/solar cell scenario. Also, the results suggested that the highest rate of preventing CO 2 emission, which was also the lowest rate of using the national grid, with 3484 kg/year was associated with EOLO wind turbines where only 4% of the required electricity was generated by the national grid.
Journal of Solar Energy Research (JSER), 2018
Tourism paves the way for employment and income development in many countries. In southern provin... more Tourism paves the way for employment and income development in many countries. In southern provinces of Iran, especially Khuzestan, however, despite their high potential, tourism is only restricted to Nowruz (New Year) and there is no appropriate conditions for tourism. The development of suitable tourist infrastructures and construction of recreational places can terminate the Nowruz monopoly of tourism to witness the extensive presence of visitors at all times of the year. According to the above notes and in line with the construction of a tourist settlement in Sarakhiyeh village and noting that different scenarios of hybrid renewable energies have not been used to electrification of a tourist village in Iran so far, this paper uses HOMER to study the electrification of this village using renewable energies wind, solar, biomass, and fuel cell. The studied parameters are net present cost (NPC), cost of energy (COE), the surplus electricity produced and the emissions produced during the year. Results indicated that in the most cost-effective, which was related to the biomass/solar cell scenario with a price/kWh of $ 0.339, 49% of energy requirement was provided by solar cells which seemed reasonable given the high radiation potential of Khuzestan province. The result of this study can accelerate the development of Khuzestan and other southern provinces of Iran with similar climate conditions.
JOURNAL OF ENGINEERING, DESIGN AND TECHNOLOGY, 2019
This paper, using energy softwares, designed of Iran and optimized a residential villa in Saman c... more This paper, using energy softwares, designed of Iran and optimized a residential villa in Saman city located in Chaharmahal and Bakhtiari Province. Having used the ideas of Climate Consultant software, the basic designing was conducted by Design Builder Software, and the cooling and heating loads and lighting tools and equipment were calculated. Then, the amount of consuming of heating, cooling and lighting load of the building was optimized through insulation of walls and ceiling, using green roof, double glazing UPVC windows, light intensity sensor and variable refrigerant flow (VRF) system. Simulation results for the stated scenarios showed an annual reduction in energy consumption of 21.1, 7.9, 26.41, 27.3 and 72.3 per cent, respectively. Also, by combining all the five scenarios, an optimal state was achieved which, from the results, brought about an annual reduction of 86.9 per cent in the energy consumption. The authors hope that the results of the current paper could be helpful for designers and engineers in reduction of energy consumption for designing a building in similar climatic conditions.
This article is designed for a two purpose intelligent system consisting of a Solar Water Heater ... more This article is designed for a two purpose intelligent system consisting of a Solar Water Heater (SWH) and interior space irradiation at night. This is done by using a pair of magnifiers during the day to concentrate sunlight on an absorber plate which has been set up at the interior space of the building. The absorbed solar energy by the water inside the aquarium raises its temperature. When the sunlight intensity decreases at the sunset or cloudy weather, the array of the magnifiers are guided to the inside of the building. We can scatter sunrays in the inside of the building by locating the ceiling luminous sources above these arrays. This makes the interior more beautiful and fascinating during night.
Dama, 2014
This research aimed to design a remote-managing system installable on gas-burner heating apparatu... more This research aimed to design a remote-managing system installable on gas-burner heating apparatus by which the users can control the temperature with SMS. They can inform of the present temperature and announce their favorite temperature to the system. It can distinguish the dangerous conditions and prevent from occurring events by informing the users. Nowadays, in the field of developing the notion of intelligent houses and making it more practical, remote-controlling the house apparatus is of great importance.
University of Tehran, 2018
According to the statistics announced by Algeria’s Ministry of Energy and Mine, residential and s... more According to the statistics announced by Algeria’s Ministry of Energy and Mine, residential and service sectors account for 40% of total energy consumption of the country of which a huge amount is dedicated to space heating and sanitary hot water. Therefore, using solar water heater (SWH) for providing a major part of this energy demand seems necessary in line with socio-economic development and continuous improvement of standards of living. Applications such as space and water heating are not well-developed in Algeria and no need to say that using energy management software packages is an excellent solution for enhancing management applications of energy development-based systems. Therefore current study uses TSOL and MeteoSyn software packages to investigate the potential of using SWHs for a residential apartment in 37 stations in Algeria. Results indicated that In Salah, Tamanrasset, and Adrar stations that respectively accounted for 85.6%, 81.2%, and 76,7% of total thermal demand provision were the most suitable ones for SWH usage. Also, given the results it can be observed that in case of using SWH in 37 stations, 150160 kWh of thermal energy for space heating and 99861 kWh for sanitary hot water is produced which, due to not using fossil fuels for generating this thermal energy, savings up to 56783 kg in CO2 emissions are obtainable annually.
Elsevier, 2018
The increasing urban population and incorrect patterns of urban activities along with inappropria... more The increasing urban population and incorrect patterns of urban activities along with inappropriate development of cities have incurred significant damage to the environment and have faced man with numerous problems such as fossil fuels deficiency. The environmental problems owing to fossil fuels and increasing demand for energy have made the approach to renewable energies and the development and utilization of these sources more and more necessary. The development and promotion of renewable energies aid the realization of countries' developmental goals in economic, social, and environmental aspect which is one of the basic factors in achieving sustainable development in any country. Biomass is one of the sources that no acceptable assessment of its technical-economic production feasibility has been done yet in various regions of Iran. Biomass is of considerable importance among renewable energy resources and its usage in energy generation prevents pollution caused by its discharge into the environment along with generating clean energy similar to that obtained from other renewable sources. Since biomass is not well known as a source of energy generation in Iran and because there are no clear regulations concerning its use for this purpose, this paper used the HOMER software to study four scenarios of utilizing wind, solar, and biomass energies for the simultaneous generation of electricity and heat in ZarrinShahr located in Isfahan Province. Results showed that receiving electricity from the national grid is superior to the use of biomass if the under study place is less than 2.58 km away from access points to this grid. Otherwise, based on economic optimization performed by HOMER software, it is recommended that a hybrid system of renewable energy including a solar panel, a biomass-fuelled generator, two batteries and a converter at a cost of 1.019 $/kWh be used, in which 1955 kWh is generated by the solar panel and 92 kWh by the biomass-fuelled generator. According to the study of previous researches, no reviews have been made thus far on the use of dump load for the provision of electricity and heat in hybrid renewable energy systems.
Springer, 2017
Climate change, population and economic growth, increasing fossil fuel prices and environmental i... more Climate change, population and economic growth, increasing fossil fuel prices and environmental issues together emphasize the generation of electricity through wind. The potential of wind for generating clean energy is remarkable in many parts of Iran. In this study, a statistical analysis was performed on wind data of Fadashk Station located in South Khorasan province in north east of Iran. Accordingly, a horizontal-axis wind turbine (HAWT) was designed for this station. Wind speed was studied in deferent months of the year at 10 m, 30 m and 40 m heights. In the mentioned heights, this station had a mean speed of 5.27, 6.20, and 6.33 m/s, respectively. Direction of the prevailing wind is almost fixed throughout the year and blows from southeast. Power density was obtained by estimating the potential of wind energy using Weibull probability distribution function. Furthermore, the amount of energy that could be obtained annually from this site was calculated by selecting two wind turbines, Kuriant18 turbine made by Kuriant Company and Vestas55 made by Vestas Company, in the actual state. Also, annual mean wind power density in this station was estimated 285 W/m 2 .
The 11th international Energy Conference (IEC 2016), Tehran, Iran, 2016
This study investigated the biogas produced from cow dung in a 50-cow dairy unit. In laboratory c... more This study investigated the biogas produced from cow dung in a 50-cow dairy unit. In laboratory conditions, 10 kg cow dung was mixed by water with the ratio of 1:1 and the obtained slurry was loaded in a tank with the Retention Time of 30 days. Finally, the total of produced biogas was equal to 0.30 m³. The average pH of this process was from 6.2 to 7.8. In this unit, 1361.7 kg cow dung is produced daily which is predicted to produced 40.85 m³/day biogas. Establishing a biogas system in a dairy cow unit led to promote the health level of livestock and human and creation a system for manure management that can reduce the level of worries about pollution of soil and water to bacterial pathogens of manures.
The 11th international Energy Conference (IEC 2016), Tehran, Iran, 2016
With total and partial transferring of the cold load from the high-consumption hours of electrici... more With total and partial transferring of the cold load from the high-consumption hours of electricity to the low-consumption hours, the ice thermal storage systems lead to reduction of the pick load, saving and reduction of the costs which is because of calculating the electricity cost according to the very variable tariff of consumption hours in Iran. In addition, from late night to early morning, the chiller efficiency is increased because of the reduction of the environment temperature. In this research, an organizational building in Tehran having 10800 m² infrastructures, 8400 m² ventilated space and 1000 kW cold capacity was selected as the sample space. The technical and economical calculation of the ice storage system for two work times (10 and 11 hours) for this building was done.
Conference Presentations by Akbar Alidadi Shamsabadi
According to the studies, photovoltaic (PV) systems are considered as one of the most extensively... more According to the studies, photovoltaic (PV) systems are considered as one of the most extensively used and practical means of using solar energy. One of the applications of such systems is their home application. Establishing photovoltaic systems on the roofs and gables of residential buildings have received a good appreciation around the world within the recent years as with the ever increasing trend of urban life and subsequently the decrease of sufficient space for establishing such generators, now the necessity of using the dead spaces of rooftops of the residential buildings is sensed more than ever. Considering the potential of Iran due to its suitable geographic position and specially concerning Tehran metropolitan, having on average 5 hours of sunlight per day, and considering 2,214,498 residential units in Tehran, and thereby the great number of dead spaces in the rooftops of residential buildings, the necessity of conducting this research is felt even more. In this article, while briefly introducing the network connected photovoltaic (PV) systems and the term of utilizing them on rooftops of buildings, precise and optimized design and layout of solar panels (including the number of rows, length and width of panels , distance between panels and the slope of panels to horizon) are provided using PVSOL software. Moreover, reviewing several printed articles while having a new attitude toward the field of renewable energies, we have presented the main and functional criteria and measures for installation of photovoltaic (PV) systems stationed on rooftops of residential buildings. Further, considering high diversity of the influencing indicators on the efficiency of photovoltaic (PV) systems in Tehran city, we have conducted a case study (Ekbatan residential complex) with the purpose of precisely implementing the indicators extracted by the present research.
The present research aimed to study the feasibility of using renewable solar and wind energies in... more The present research aimed to study the feasibility of using renewable solar and wind energies in buildings of low energy consumption in Hamedan. In order to estimate the primary wind and solar energy at this station, the necessary computations were performed on the statistical data measured by Renewable Energy and Energy Efficiency Organization and NASA website. HOMER software was used for economic analysis. In order to examine the effect of each parameter on the finished cost of produced energy, the sensitivity analysis was conducted on the data related to sun radiation intensity, wind speed, fuel price, and maximum annual capacity shortage. In addition, 180 different scenarios were investigated in this regard. The results showed that the diesel generator/battery/solar cell hybrid systems are cost-effective for a fuel price of more than $ 2 per liter, at any irradiation intensity and wind speed. The results also indicated that the use of wind turbines is not cost-effective due to the weak wind speed of the study area. Moreover, since all the required energy is provided, the maximum annual capacity shortage has no impact on the results. The study findings demonstrated that the renewable energy hybrid system is recommended when the distance from the national electricity grid is more than 6.83 km.
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Papers by Akbar Alidadi Shamsabadi
Conference Presentations by Akbar Alidadi Shamsabadi