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Dr Mehdi Ali Ehyaei is an Associate Professor at Pardis Branch, Islamic Azad University. He received his PhD in Mechanical Engineering from the Sharif University of Technology in 2007 (first rank: GPA 19.13/20) and carried out postdoctoral research at Ontario University in 2010. He has published 70 papers in ISI journals in the energy, exergy, and renewable energy fields, primarily involving mathematical modeling and computer simulation. His research interests include renewable energy exergy analysis, advanced and extended exergy analyses for dispersed power generation, fuel cells, and thermal cycles.
This research presents the energy, exergy, economic, and environmental assessment, and multi-objective optimization of a flash-binary geothermal CCHP cycle. A sensitivity analysis of production well inlet temperature and cooling to power flow ratio on exergetic, economic, and environmental parameters was conducted. Furthermore, the effects of the inflation rate and plant working hours on economic parameters were investigated. Results showed that increasing the production well inlet temperature harms exergy efficiency and exergetic performance criteria and results in a gain in exergo-environmental impact index and heating capacity. In addition, the total plant cost increased by raising the production well temperature. Furthermore, increasing the cooling to power flow ratio caused a reduction in exergy efficiency, exergetic performance criteria, and produced net power and an enhancement in exergy destruction, cooling capacity, and total plant cost. The exergy efficiency and total cost rate in the base case were 58% and 0.1764, respectively. Optimization results showed that at the selected optimum point, exergy efficiency was 4.5% higher, and the total cost rate was 10.3% lower than the base case. Levelized cost of energy and the pay-back period at the optimum point was obtained as 6.22 c$/kWh, 3.43 years, which were 5.14% and 6.7% lower than the base case.
Moein Shamoushaki; Mehdi Aliehyaei; Farhad Taghizadeh-Hesary. Energy, Exergy, Exergoeconomic, and Exergoenvironmental Assessment of Flash-Binary Geothermal Combined Cooling, Heating and Power Cycle. Energies 2021, 14, 4464 .
AMA StyleMoein Shamoushaki, Mehdi Aliehyaei, Farhad Taghizadeh-Hesary. Energy, Exergy, Exergoeconomic, and Exergoenvironmental Assessment of Flash-Binary Geothermal Combined Cooling, Heating and Power Cycle. Energies. 2021; 14 (15):4464.
Chicago/Turabian StyleMoein Shamoushaki; Mehdi Aliehyaei; Farhad Taghizadeh-Hesary. 2021. "Energy, Exergy, Exergoeconomic, and Exergoenvironmental Assessment of Flash-Binary Geothermal Combined Cooling, Heating and Power Cycle." Energies 14, no. 15: 4464.
Global warming and population growth have been contributing factors to the decline of freshwater resources around the globe. More than 45% of the desalination plants are in the Middle East. Due to the severe scarcity of freshwater resources, Iran also needs to construct several desalination plants, since by 2021 the ratio of freshwater per capita in the country to the world average per capita will be 0.8. The uses of solar, wind, geothermal, and wave are practical in desalination systems. The average solar radiation in Iran is 15.3 kWh/m2/day, which includes more than 2800 hours of radiation per year in central regions. Also wind, geothermal, and wave energy potentials are equalled to 100×106 MW, 200 MW, and 20 kW/m, respectively. The purpose of this paper is to evaluate the feasibility of using renewable energy for desalination in arid and semi-arid regions and Iran has been considered as a case study.
Farbod Esmaeilion; Abolfazl Ahmadi; Siamak Hoseinzadeh; Mehdi Aliehyaei; Seyed Ali Makkeh; Davide Astiaso Garcia. Renewable energy desalination; a sustainable approach for water scarcity in arid lands. International Journal of Sustainable Engineering 2021, 1 -27.
AMA StyleFarbod Esmaeilion, Abolfazl Ahmadi, Siamak Hoseinzadeh, Mehdi Aliehyaei, Seyed Ali Makkeh, Davide Astiaso Garcia. Renewable energy desalination; a sustainable approach for water scarcity in arid lands. International Journal of Sustainable Engineering. 2021; ():1-27.
Chicago/Turabian StyleFarbod Esmaeilion; Abolfazl Ahmadi; Siamak Hoseinzadeh; Mehdi Aliehyaei; Seyed Ali Makkeh; Davide Astiaso Garcia. 2021. "Renewable energy desalination; a sustainable approach for water scarcity in arid lands." International Journal of Sustainable Engineering , no. : 1-27.
With a goal of achieving net-zero emissions by developing Smart Cities (SCs) and industrial decarbonization, there is a growing desire to decarbonize the renewable energy sector by accelerating green buildings (GBs) construction, electric vehicles (EVs), and ensuring long-term stability, with the expectation that emissions will need to be reduced by at least two thirds by 2035 and by at least 90% by 2050. Implementing GBs in urban areas and encouraging the use of EVs are cornerstones of transition towards SCs, and practical actions that governments can consider to help with improving the environment and develop SCs. This paper investigates different aspects of smart cities development and introduces new feasible indicators related to GBs and EVs in designing SCs, presenting existing barriers to smart cities development, and solutions to overcome them. The results demonstrate that feasible and achievable policies such as the development of the zero-energy, attention to design parameters, implementation of effective indicators for GBs and EVs, implementing strategies to reduce the cost of production of EVs whilst maintaining good quality standards, load management, and integrating EVs successfully into the electricity system, are important in smart cities development. Therefore, strategies to governments should consider the full dynamics and potential of socio-economic and climate change by implementing new energy policies on increasing investment in EVs, and GBs development by considering energy, energy, techno-economic, and environmental benefits.
Armin Razmjoo; Meysam Nezhad; Lisa Kaigutha; Mousa Marzband; SeyedAli Mirjalili; Mehdi Pazhoohesh; Saim Memon; Mehdi Ehyaei; Giuseppe Piras. Investigating Smart City Development Based on Green Buildings, Electrical Vehicles and Feasible Indicators. Sustainability 2021, 13, 7808 .
AMA StyleArmin Razmjoo, Meysam Nezhad, Lisa Kaigutha, Mousa Marzband, SeyedAli Mirjalili, Mehdi Pazhoohesh, Saim Memon, Mehdi Ehyaei, Giuseppe Piras. Investigating Smart City Development Based on Green Buildings, Electrical Vehicles and Feasible Indicators. Sustainability. 2021; 13 (14):7808.
Chicago/Turabian StyleArmin Razmjoo; Meysam Nezhad; Lisa Kaigutha; Mousa Marzband; SeyedAli Mirjalili; Mehdi Pazhoohesh; Saim Memon; Mehdi Ehyaei; Giuseppe Piras. 2021. "Investigating Smart City Development Based on Green Buildings, Electrical Vehicles and Feasible Indicators." Sustainability 13, no. 14: 7808.
Technology developments have increased the more efficient use of solar energy, which has led to the emergence of novel technologies to absorb, convert and store solar irradiations. Solar ponds are one of the large-scale systems that have the proper potentials to achieve these objectives. The obtained thermal energy from the solar ponds is classified as low-grade heat. This paper brings together the benefits of the progress of solar ponds. Initially, the new types of construction, salts, and additives for achieving enhancements in the thermal performance of the solar ponds are presented. Then, advanced models for reducing the heat losses from side walls, upper and lower zones are assessed. Finally, different tools for evaluating the solar ponds are reviewed. In this review, the accomplishments in all processes for the absorption of solar irradiation, storing and extracting thermal energy, and the application of salinity gradient solar ponds are reviewed in detail.
Farbod Esmaeilion; Abolfazl Ahmadi; Mehdi Aliehyaei. Low-grade heat from solar ponds: trends, perspectives, and prospects. International Journal of Ambient Energy 2021, 1 -30.
AMA StyleFarbod Esmaeilion, Abolfazl Ahmadi, Mehdi Aliehyaei. Low-grade heat from solar ponds: trends, perspectives, and prospects. International Journal of Ambient Energy. 2021; ():1-30.
Chicago/Turabian StyleFarbod Esmaeilion; Abolfazl Ahmadi; Mehdi Aliehyaei. 2021. "Low-grade heat from solar ponds: trends, perspectives, and prospects." International Journal of Ambient Energy , no. : 1-30.
In this article, a new geothermal powered multigeneration system is proposed and analyzed via energy, exergy, economic, and exergoenvironmental points of view as well as parametric study to see the effects of main parameter variations. This multigeneration system includes a new configuration of the organic Rankine cycle with two evaporators and expanders, heater, NaClO system, and reverse osmosis. The products of this proposed system are electricity, hydrogen, heating, potable water, and salt. Due to theoretical analysis, this system produces 1.264 GWh of electrical energy, 15.93 GWh heating, 1919 Ton salt, 86400 m3 of potable water, and 4.397 × 107 m3 of hydrogen, annually with 60% and 21% of the system energy and exergy efficiencies. The organic Rankine cycle and reverse osmosis systems have the highest and lowest percentage of exergy destruction rates. The economic analysis reveals that the system payback period is 5.3 years. The system's net present value is 668.2 million US$. The exergoenvironmental analysis shows that the exergoenvironmental, environmental damage effectiveness, and the exergy stability factors for the proposed system are 0.86, 4.414, and 0.8, respectively. The parametric study shows that increasing the geo-fluid mass flow rate, increases the system's electrical power production and exergy efficiency while decreases the system exergy efficiency.
Yan Cao; M.A. Ehyaei. Energy, exergy, exergoenvironmental, and economic assessments of the multigeneration system powered by geothermal energy. Journal of Cleaner Production 2021, 313, 127823 .
AMA StyleYan Cao, M.A. Ehyaei. Energy, exergy, exergoenvironmental, and economic assessments of the multigeneration system powered by geothermal energy. Journal of Cleaner Production. 2021; 313 ():127823.
Chicago/Turabian StyleYan Cao; M.A. Ehyaei. 2021. "Energy, exergy, exergoenvironmental, and economic assessments of the multigeneration system powered by geothermal energy." Journal of Cleaner Production 313, no. : 127823.
This review showcases a comprehensive analysis of studies that highlight the different conversion procedures attempted across the globe. The resources of biogas production along with treatment methods are presented. The effect of different governing parameters like feedstock types, pretreatment approaches, process development, and yield to enhance the biogas productivity is highlighted. Biogas applications, for example, in heating, electricity production, and transportation with their global share based on national and international statistics are emphasized. Reviewing the world research progress in the past 10 years shows an increase of ~ 90% in biogas industry (120 GW in 2019 compared to 65 GW in 2010). Europe (e.g., in 2017) contributed to over 70% of the world biogas generation representing 64 TWh. Finally, different regulations that manage the biogas market are presented. Management of biogas market includes the processes of exploration, production, treatment, and environmental impact assessment, till the marketing and safe disposal of wastes associated with biogas handling. A brief overview of some safety rules and proposed policy based on the world regulations is provided. The effect of these regulations and policies on marketing and promoting biogas is highlighted for different countries. The results from such studies show that Europe has the highest promotion rate, while nowadays in China and India the consumption rate is maximum as a result of applying up-to-date policies and procedures.
S. Abanades; H. Abbaspour; A. Ahmadi; B. Das; M. A. Ehyaei; F. Esmaeilion; M. El Haj Assad; T. Hajilounezhad; D. H. Jamali; A. Hmida; H. A. Ozgoli; S. Safari; M. AlShabi; E. H. Bani-Hani. A critical review of biogas production and usage with legislations framework across the globe. International Journal of Environmental Science and Technology 2021, 1 -24.
AMA StyleS. Abanades, H. Abbaspour, A. Ahmadi, B. Das, M. A. Ehyaei, F. Esmaeilion, M. El Haj Assad, T. Hajilounezhad, D. H. Jamali, A. Hmida, H. A. Ozgoli, S. Safari, M. AlShabi, E. H. Bani-Hani. A critical review of biogas production and usage with legislations framework across the globe. International Journal of Environmental Science and Technology. 2021; ():1-24.
Chicago/Turabian StyleS. Abanades; H. Abbaspour; A. Ahmadi; B. Das; M. A. Ehyaei; F. Esmaeilion; M. El Haj Assad; T. Hajilounezhad; D. H. Jamali; A. Hmida; H. A. Ozgoli; S. Safari; M. AlShabi; E. H. Bani-Hani. 2021. "A critical review of biogas production and usage with legislations framework across the globe." International Journal of Environmental Science and Technology , no. : 1-24.
The thermal energy conversion of natural gas (NG) using appropriate configuration cycles represents one of the best nonrenewable energy resources because of its high heating value and low environmental effects. The natural gas can be converted to liquefied natural gas (LNG), via the liquefaction process, which is used as a heat source and sink in various multigeneration cycles. In this paper, a new configuration cycle is proposed using LNG as a heat source and heat sink. This new proposed cycle includes the CO2 cycle, the organic Rankine cycle (ORC), a heater, a cooler, an NaClO plant, and reverse osmosis. This cycle generates electrical power, heating and cooling energy, potable water (PW), hydrogen, and salt all at the same time. For this purpose, one computer program is provided in an engineering equation solver for energy, exergy, and thermo-economic analyses. The results for each subsystem are validated by previous researches in this field. This system produces 10.53 GWh electrical energy, 276.4 GWh cooling energy, 1783 GWh heating energy, 17,280 m3 potable water, 739.56 tons of hydrogen, and 383.78 tons of salt in a year. The proposed system energy efficiency is 54.3%, while the exergy efficiency is equal to 13.1%. The economic evaluation showed that the payback period, the simple payback period, the net present value, and internal rate of return are equal to 7.9 years, 6.9 years, 908.9 million USD, and 0.138, respectively.
Tri Tjahjono; Mehdi Ehyaei; Abolfazl Ahmadi; Siamak Hoseinzadeh; Saim Memon. Thermo-Economic Analysis on Integrated CO2, Organic Rankine Cycles, and NaClO Plant Using Liquefied Natural Gas. Energies 2021, 14, 2849 .
AMA StyleTri Tjahjono, Mehdi Ehyaei, Abolfazl Ahmadi, Siamak Hoseinzadeh, Saim Memon. Thermo-Economic Analysis on Integrated CO2, Organic Rankine Cycles, and NaClO Plant Using Liquefied Natural Gas. Energies. 2021; 14 (10):2849.
Chicago/Turabian StyleTri Tjahjono; Mehdi Ehyaei; Abolfazl Ahmadi; Siamak Hoseinzadeh; Saim Memon. 2021. "Thermo-Economic Analysis on Integrated CO2, Organic Rankine Cycles, and NaClO Plant Using Liquefied Natural Gas." Energies 14, no. 10: 2849.
Objectives: The purpose of this study is to analyze the performance of a one-megawatt photovoltaic power plant in Arak-Iran, according to IEC-61724 standard, using data recorded over a year. The photovoltaic plant of Arak is located at coordinates 34.0954° N and 49.7013° E. This power plant is the first-megawatt photovoltaic power plant in Iran which two types of modules are used and it was constructed by the New Energy Agency and the Power Research Center under the supervision of the Ministry of Energy in 2016. In this plant, a combination of monocrystal and polycrystalline modules is used, and the annual output is 1756 MWh. Methods: The combination of modules is based on the 1920 modules of 250 W of polycrystalline and 260 modules of 260 W of monocrystal in the construction of the power plant. There are also 4 inverters and a 1250 KVA dry power trans-former. The plant has suitable productivity, with a performance ratio equal to 0.8 and a final yield of 4.57. Results: Ultimately the PV plant is simulated by PVsyst and the results are compared with monitored records which indi-cated the appropriate accuracy of the collected data. The calculated performance ratio for the power plant by PVsyst is 81.2% and has a 1.5% difference with the monitored totals. The energy supplied during one year by the power plant is 1756 MWh, whereas the prediction of annual energy yield that entered to the grid is equal to 1757 MWh.
Farbod Esmaeilion; Abolfazl Ahmadi; Aryan Esmaeilion; Mehdi Ali Ehyaei. The Performance Analysis and Monitoring of Grid-connected Photovoltaic Power Plant. Current Chinese Computer Science 2021, 1, 77 -96.
AMA StyleFarbod Esmaeilion, Abolfazl Ahmadi, Aryan Esmaeilion, Mehdi Ali Ehyaei. The Performance Analysis and Monitoring of Grid-connected Photovoltaic Power Plant. Current Chinese Computer Science. 2021; 1 (1):77-96.
Chicago/Turabian StyleFarbod Esmaeilion; Abolfazl Ahmadi; Aryan Esmaeilion; Mehdi Ali Ehyaei. 2021. "The Performance Analysis and Monitoring of Grid-connected Photovoltaic Power Plant." Current Chinese Computer Science 1, no. 1: 77-96.
A multi-generation system has been considered to meet different purposes in recent years. Two main purposes of this system are producing various products, as well as the improved performance of this system, simultaneously. In this paper, a new cogeneration hybrid cycle is introduced to provide electricity and urea production. This system includes gas cycle, steam cycle, carbon capture system, proton exchange membrane, electrolyzer, cryogenic air separation unit, and urea and ammonia synthesis reactors. The energy, economic, exergy, exergoenvironmental, and environmental analyses of this proposed system have been investigated. The results of this study demonstrate that this system produces 689 GW h electrical energy and 1.323 million tons of urea annually. The energy and exergy efficiencies of these hybrid systems are equal to 31. 8% and 53.3%, respectively. The highest and lowest rate of exergy distribution is related to the urea synthesis reactor and cryogenic air separation unit, respectively. In the economic evaluation, the social cost of carbon dioxide is considered. The four main economic factors: net present value, payback period and simple payback period, and internal rate of return are examined and calculated. By considering the social cost of the carbon dioxide separation unit, the economic factors are improved considerably. The exergoenvironment and environmental damage effectiveness and exergy stability factors for this system are equal to 1.64, 3.1, and 0.76, respectively.
H. Abbaspour; M.A. Ehyaei; A. Ahmadi; M. Panahi; A. Abdalisousan; A. Mirzohosseini. Energy, exergy, economic, exergoenvironmental and environmental (5E) analyses of the cogeneration plant to produce electrical power and urea. Energy Conversion and Management 2021, 235, 113951 .
AMA StyleH. Abbaspour, M.A. Ehyaei, A. Ahmadi, M. Panahi, A. Abdalisousan, A. Mirzohosseini. Energy, exergy, economic, exergoenvironmental and environmental (5E) analyses of the cogeneration plant to produce electrical power and urea. Energy Conversion and Management. 2021; 235 ():113951.
Chicago/Turabian StyleH. Abbaspour; M.A. Ehyaei; A. Ahmadi; M. Panahi; A. Abdalisousan; A. Mirzohosseini. 2021. "Energy, exergy, economic, exergoenvironmental and environmental (5E) analyses of the cogeneration plant to produce electrical power and urea." Energy Conversion and Management 235, no. : 113951.
One of the necessities of human beings in this century is the potable water supply. This supply has more environmental benefits if the potable water is supplied by renewable energy resources. In this paper, a combination of combined cooling and power system (Goswami cycle), with the reverse osmosis and sodium hypochlorite plant powered by geothermal energy resources is proposed. The products of this system are electrical and cooling energy, potable water, hydrogen and salt. To investigate all of the system aspects, energy, exergy, economic, exergoenvironmental, and environmental analyses are performed. In environmental analysis, the social costs of air pollution are considered. It means that for the same amount of system electrical power produced by non-renewable energy resource power generation systems, the produced air pollution gases and their costs considering the social cost of air pollution are quantified. In this regard, four scenarios are defined. Results show this multi-generation system produces 1.751 GJ/year electrical energy, 1.04 GJ/year cooling energy, 18,106.8 m3/year potable water, 7.396 Ton/year hydrogen, and 3.838 Ton/year salt throughout a year. The system energy and exergy efficiencies are equal to 12.25%, and 19.6%. The payback period time of this system is equal to 2.7 years.
M.A. Ehyaei; Simin Baloochzadeh; A. Ahmadi; Stéphane Abanades. Energy, exergy, economic, exergoenvironmental, and environmental analyses of a multigeneration system to produce electricity, cooling, potable water, hydrogen and sodium-hypochlorite. Desalination 2020, 501, 114902 .
AMA StyleM.A. Ehyaei, Simin Baloochzadeh, A. Ahmadi, Stéphane Abanades. Energy, exergy, economic, exergoenvironmental, and environmental analyses of a multigeneration system to produce electricity, cooling, potable water, hydrogen and sodium-hypochlorite. Desalination. 2020; 501 ():114902.
Chicago/Turabian StyleM.A. Ehyaei; Simin Baloochzadeh; A. Ahmadi; Stéphane Abanades. 2020. "Energy, exergy, economic, exergoenvironmental, and environmental analyses of a multigeneration system to produce electricity, cooling, potable water, hydrogen and sodium-hypochlorite." Desalination 501, no. : 114902.
: Efficient solar and wind energy to electricity conversion technologies are the best alternatives to reduce the use of fossil fuels and to evolve towards a green and decarbonized world. As the conventional photovoltaic systems use only the 600–1100 nm wavelength range of the solar radiation spectrum for electricity production, hybrid systems taking advantage of the overall solar radiation spectrum are gaining increasing interest. Moreover, such hybrid systems can produce, in an integrated and combined way, electricity, heating, cooling, and syngas through thermochemical processes. They have thus the huge potential for use in residential applications. The present work proposes a novel combined and integrated system for residential applications including wind turbines and a solar dish collector for renewables energy harvesting, an organic Rankine cycle for power production, an absorption chiller for cold production, and a methanation plant for CH4 production from captured CO2. This study deals with the energy, exergy, economic, and exergoenvironmental analyses of the proposed hybrid combined system, to assess its performance, viability, and environmental impact when operating in Tehran. Additionally, it gives a clear picture of how the production pattern of each useful product depends on the patterns of the collection of available renewable energies. Results show that the rate of methane production of this hybrid system changes from 42 up to 140 Nm3/month, due to CO2 consumption from 44 to 144 Nm3/month during a year. Moreover, the energy and exergy efficiencies of this hybrid system vary from 24.7% and 23% to 9.1% and 8%, respectively. The simple payback period of this hybrid system is 15.6 and the payback period of the system is 21.4 years.
Saeed Esfandi; Simin Baloochzadeh; Mohammad Asayesh; Mehdi Ali Ehyaei; Abolfazl Ahmadi; Amir Arsalan Rabanian; Biplab Das; Vitor A. F. Costa; Afshin Davarpanah. Energy, Exergy, Economic, and Exergoenvironmental Analyses of a Novel Hybrid System to Produce Electricity, Cooling, and Syngas. Energies 2020, 13, 6453 .
AMA StyleSaeed Esfandi, Simin Baloochzadeh, Mohammad Asayesh, Mehdi Ali Ehyaei, Abolfazl Ahmadi, Amir Arsalan Rabanian, Biplab Das, Vitor A. F. Costa, Afshin Davarpanah. Energy, Exergy, Economic, and Exergoenvironmental Analyses of a Novel Hybrid System to Produce Electricity, Cooling, and Syngas. Energies. 2020; 13 (23):6453.
Chicago/Turabian StyleSaeed Esfandi; Simin Baloochzadeh; Mohammad Asayesh; Mehdi Ali Ehyaei; Abolfazl Ahmadi; Amir Arsalan Rabanian; Biplab Das; Vitor A. F. Costa; Afshin Davarpanah. 2020. "Energy, Exergy, Economic, and Exergoenvironmental Analyses of a Novel Hybrid System to Produce Electricity, Cooling, and Syngas." Energies 13, no. 23: 6453.
Due to the harmful effects and depletion of non-renewable energy resources, the major concerns are focused on using renewable energy resources. Among them, the geothermal energy has a high potential in volcano regions such as the Middle East. The optimization of an organic Rankine cycle with a geothermal heat source is investigated based on a genetic algorithm having two stages. In the first stage, the optimal variables are the depth of the well and the extraction flow rate of the geothermal fluid mass. The optimal value of the depth of the well, extraction mass flow rate, and the geothermal fluid temperature is found to be 2100 m, 15 kg/s, and 150 °C. In the second stage, the efficiency and output power of the power plant are optimized. To achieve maximum output power as well as cycle efficiency, the optimization variable is the maximum organic fluid pressure in the high-temperature heat exchanger. The optimum values of energy efficiency and cycle power production are equal to 0.433 MW and 14.1%, respectively.
Mehdi A. Ehyaei; Abolfazl Ahmadi; Marc A. Rosen; Afshin Davarpanah. Thermodynamic Optimization of a Geothermal Power Plant with a Genetic Algorithm in Two Stages. Processes 2020, 8, 1277 .
AMA StyleMehdi A. Ehyaei, Abolfazl Ahmadi, Marc A. Rosen, Afshin Davarpanah. Thermodynamic Optimization of a Geothermal Power Plant with a Genetic Algorithm in Two Stages. Processes. 2020; 8 (10):1277.
Chicago/Turabian StyleMehdi A. Ehyaei; Abolfazl Ahmadi; Marc A. Rosen; Afshin Davarpanah. 2020. "Thermodynamic Optimization of a Geothermal Power Plant with a Genetic Algorithm in Two Stages." Processes 8, no. 10: 1277.
The use of renewable energy systems for domestic and industrial sectors is growing at a rapid rate due to the increase in population and due to the restrictions set by governments worldwide in decreasing the green gas emissions. Among one of the most popular renewable energy resources is solar energy which can be applied easily for domestic use such as space cooling and district heating. Moreover, it can be applied to produce fresh water and drying technology, electricity production. In this work, applications of low-temperature solar collectors are presented and discussed in detail. Different applications of flat plate collectors, photovoltaic (PV) solar cells, parabolic trough collectors (PTC), and evacuated tube collectors (ETC) are used to drive desalination plants for freshwater production, heat pumps for residential buildings heating, absorption chillers for space cooling and providing houses with electricity. Cooling methods of PV cells are discussed using different techniques such as phase change material, forced air and water flows to keep the PV cells operating efficiently. The progress of using low-temperature solar collectors in Europe, North America, Asia, Africa, and Australia is presented and discussed. Review of energy and exergy analyses for the applications of solar collectors are demonstrated to determine the performance characteristics of solar systems. Moreover, an economic assessment is conducted to find out the feasibility of solar systems applications from an economic viewpoint. Finally, the International Energy Agency (IEA) vision and prospects for solar energy applications are presented. This study will serve as guidelines for engineers who are involved in solar energy to help them in finding the most suitable applications of low-temperature solar collectors.
A. Ahmadi; M.A. Ehyaei; A. Doustgani; M. El Haj Assad; A. Hmida; D.H. Jamali; R. Kumar; Z.X. Li; A. Razmjoo. Recent residential applications of low-temperature solar collector. Journal of Cleaner Production 2020, 279, 123549 .
AMA StyleA. Ahmadi, M.A. Ehyaei, A. Doustgani, M. El Haj Assad, A. Hmida, D.H. Jamali, R. Kumar, Z.X. Li, A. Razmjoo. Recent residential applications of low-temperature solar collector. Journal of Cleaner Production. 2020; 279 ():123549.
Chicago/Turabian StyleA. Ahmadi; M.A. Ehyaei; A. Doustgani; M. El Haj Assad; A. Hmida; D.H. Jamali; R. Kumar; Z.X. Li; A. Razmjoo. 2020. "Recent residential applications of low-temperature solar collector." Journal of Cleaner Production 279, no. : 123549.
Due to the high amount of natural gas resources in Iran, the gas cycle as one of the main important power production system is used to produce electricity. The gas cycle has some disadvantages such as power consumption of air compressors, which is a major part of gas turbine electrical production and a considerable reduction in electrical power production by increasing the environment temperature due to a reduction in air density and constant volumetric airflow through a gas cycle. To overcome these weaknesses, several methods are applied such as cooling the inlet air of the system by different methods and integration heat recovery steam generator (HRSG) with the gas cycle. In this paper, using a heliostat solar receiver (HSR) in gas and combined cycles are investigated by energy, exergy, and economic analyses in Tehran city. The heliostat solar receiver is used to heat the pressurized exhaust air from the air compressor in gas and combined cycles. The key parameter of the three mentioned analyses was calculated and compared by writing computer code in MATLAB software. Results showed the use of HSR in gas and combined cycles increase the annual average energy efficiency from 28.4% and 48.5% to 44% and 76.5%, respectively. Additionally, for exergy efficiency, these increases are from 29.2% and 49.8% to 45.2% and 78.5%, respectively. However, from an economic point of view, adding the HRSG increases the payback period (PP) and it decreases the net present value (NPV) and internal rate of return (IRR).
S. M. Alizadeh; Arezoo Ghazanfari; Mehdi Aliehyaei; Abolfazal Ahmadi; D. H. Jamali; Navid Nedaei; Afshin Davarpanah. Investigation the Integration of Heliostat Solar Receiver to Gas and Combined Cycles by Energy, Exergy, and Economic Point of Views. Applied Sciences 2020, 10, 5307 .
AMA StyleS. M. Alizadeh, Arezoo Ghazanfari, Mehdi Aliehyaei, Abolfazal Ahmadi, D. H. Jamali, Navid Nedaei, Afshin Davarpanah. Investigation the Integration of Heliostat Solar Receiver to Gas and Combined Cycles by Energy, Exergy, and Economic Point of Views. Applied Sciences. 2020; 10 (15):5307.
Chicago/Turabian StyleS. M. Alizadeh; Arezoo Ghazanfari; Mehdi Aliehyaei; Abolfazal Ahmadi; D. H. Jamali; Navid Nedaei; Afshin Davarpanah. 2020. "Investigation the Integration of Heliostat Solar Receiver to Gas and Combined Cycles by Energy, Exergy, and Economic Point of Views." Applied Sciences 10, no. 15: 5307.
Waste heat recovery from industrial processes has attracted much attention in the energy field in the past few decades. This paper introduces a new configuration of the triple cycle including gas and steam cycles as well as an organic Rankine cycle (ORC), for energy recovery from the hot exhaust gas. Also, the amine carbon capture system (CCS) is used to separate and store carbon dioxide from the hot exhaust gas. For this novel system, energy, exergy, economic, exergoeconomic, and exergoenvironmental (5E) assessments are accomplished. The results reveal that adding steam and ORC cycles to the gas cycle increases the energy and exergy efficiencies to 71.8 and 73.7, respectively. However, integration of the CCS unit to this system reduces energy and exergy efficiencies to 50.5 % and 51.9 %. The economic results for the proposed system show that SPP and PP are both 1.5 years. Moreover, NPV and IRR are found to be 3.13 × 09 $ and 0.68 respectively. Moreover, the carbon capture system (CCS) unit can avoid 627,000 metric tons of CO2 emissions annually.
P. Talebizadehsardari; M.A. Ehyaei; A. Ahmadi; Danial Hamedi Jamali; R. Shirmohammadi; A. Eyvazian; A. Ghasemi; Marc A. Rosen. Energy, exergy, economic, exergoeconomic, and exergoenvironmental (5E) analyses of a triple cycle with carbon capture. Journal of CO2 Utilization 2020, 41, 101258 .
AMA StyleP. Talebizadehsardari, M.A. Ehyaei, A. Ahmadi, Danial Hamedi Jamali, R. Shirmohammadi, A. Eyvazian, A. Ghasemi, Marc A. Rosen. Energy, exergy, economic, exergoeconomic, and exergoenvironmental (5E) analyses of a triple cycle with carbon capture. Journal of CO2 Utilization. 2020; 41 ():101258.
Chicago/Turabian StyleP. Talebizadehsardari; M.A. Ehyaei; A. Ahmadi; Danial Hamedi Jamali; R. Shirmohammadi; A. Eyvazian; A. Ghasemi; Marc A. Rosen. 2020. "Energy, exergy, economic, exergoeconomic, and exergoenvironmental (5E) analyses of a triple cycle with carbon capture." Journal of CO2 Utilization 41, no. : 101258.
This review deals with organic Rankine cycle powered by geothermal resource which is one favorable substitute for conventional fossil energy. Organic Rankine cycle power plants are suitable for utilization of low-temperature energy sources (low grade energy) such as geothermal resource having low temperature (below 150 ᵒC). The applications of organic Rankine cycle for electricity production from geothermal energy resource was reviewed first, where the choice of geothermal energy resources and organic fluids was discussed for different ORC configurations and operating conditions. Hybrid optimization approaches for the purpose of maintaining long term performance of enhanced geothermal system reservoirs were also summarized. Furthermore, an in-depth review of energy and exergy efficiencies of ORCs was conducted. Key factors that influence the energy and energy efficiencies of organic Rankine cycle were discussed in detail. Then, the economic indexes such as electricity production cost and levelized cost of electricity for different organic Rankine cycle configurations were compared with other conventional power generation systems to examine the commercialization of the Organic Rankine cycle. Finally, life cycle assessment that evaluates the whole life performance of geothermal organic Rankine cycle energy systems was reviewed. The Environmental impacts of geothermal ORC were also considered. Compared with other review papers on geothermal organic Rankine cycle s, the present review provides the latest materials for more systematically surveying the geothermal organic Rankine cycle, which will be a valuable source of guidance and directions for engineers and researchers in this field.
A. Ahmadi; Mamdouh El Haj Assad; Danial Hamedi Jamali; R. Kumar; Z.X. Li; Tareq Salameh; M. Al-Shabi; M.A. Ehyaei. Applications of geothermal organic Rankine Cycle for electricity production. Journal of Cleaner Production 2020, 274, 122950 .
AMA StyleA. Ahmadi, Mamdouh El Haj Assad, Danial Hamedi Jamali, R. Kumar, Z.X. Li, Tareq Salameh, M. Al-Shabi, M.A. Ehyaei. Applications of geothermal organic Rankine Cycle for electricity production. Journal of Cleaner Production. 2020; 274 ():122950.
Chicago/Turabian StyleA. Ahmadi; Mamdouh El Haj Assad; Danial Hamedi Jamali; R. Kumar; Z.X. Li; Tareq Salameh; M. Al-Shabi; M.A. Ehyaei. 2020. "Applications of geothermal organic Rankine Cycle for electricity production." Journal of Cleaner Production 274, no. : 122950.
This paper brings together the benefits of a membrane-thermal desalination plant with an integrated system containing parabolic trough collectors and wind turbines in collaboration with the electrical network to produce power and freshwater. This proposed cogeneration system was employed for providing power and freshwater in Chabahar in Iran by three types of desalination system consist of the Reverse Osmosis (RO), Multi-effect distillation (MED), and Thermal Vapor Compression (TVC). Through this novel system, the heat generated in the parabolic trough collector is transferred into the organic Rankine cycle (ORC) to produce power. So, the generated power of the organic Rankine cycle and an auxiliary wind turbine can employ by the Reverse Osmosis unit, and the surplus amount of the electricity can sell to the electrical network. This configuration is enabled to increase the stability of the system, and it ultimately reduces the cost of water production by 23%. Besides, the integration of Multi-effect distillation (MED) and Thermal Vapor Compression (TVC) systems enjoys the rejected waste heat from the condenser to increase the produced freshwater. The obtained results from exergy analysis demonstrated that the exergy destruction of the solar collectors and wind turbines contributed by 39.5% and 22.2%, respectively. The results of multi-objective particle swarm optimization reveal that the exergy efficiency and the cost of freshwater production reach to 26.2% and 3.08 US$/m3, each. The environmental assessments of this system demonstrate that this hybrid system prevents the amount of 52164 tons of CO2 emission per year.
Seyed Ali Makkeh; Abolfazl Ahmadi; Farbod Esmaeilion; Mehdi Aliehyaei. Energy, exergy and exergoeconomic optimization of a cogeneration system integrated with parabolic trough collector-wind turbine with desalination. Journal of Cleaner Production 2020, 273, 123122 .
AMA StyleSeyed Ali Makkeh, Abolfazl Ahmadi, Farbod Esmaeilion, Mehdi Aliehyaei. Energy, exergy and exergoeconomic optimization of a cogeneration system integrated with parabolic trough collector-wind turbine with desalination. Journal of Cleaner Production. 2020; 273 ():123122.
Chicago/Turabian StyleSeyed Ali Makkeh; Abolfazl Ahmadi; Farbod Esmaeilion; Mehdi Aliehyaei. 2020. "Energy, exergy and exergoeconomic optimization of a cogeneration system integrated with parabolic trough collector-wind turbine with desalination." Journal of Cleaner Production 273, no. : 123122.
Many studies have attempted to optimize integrated Solid Oxide Fuel Cell‐Gas Turbine (SOFC‐GT), although different and somehow conflicting results are reported employing various algorithms. In this study, Multi‐Objective Optimization (MOO) is employed to approach the optimal design of SOFC‐GT considering all prevailing factors. The emphasis is placed on the evaluation of the Particle Swarm Optimization (PSO) and Genetic Algorithm (GA) performance as two effective approaches for solving the multi‐objective and non‐linear optimization problems. Multi‐ objective optimization is carried out on two vital objectives; the electrical efficiency and the overall output power of the system. The considerable achievements are the set of optimal points that aim to identify the system optimal performance which provides a practical basis for the decision‐makers to choose the appropriate target functions. For the studied conditions, the two algorithms nearly exhibit similar performance, while the PSO is faster and more efficient in terms of computational effort. The PSO appears to achieve its ultimate parameter values in fewer generations compared to the GA algorithm under the examined circumstances. It is found that the maximum power of 410 kW is accomplished employing the GA optimization method with an efficiency of 64%, while PSO method yields the maximum power of 419.19 kW at the efficiency of 58.9%. The results stress that PSO offers more satisfactory convergence and fidelity of the solution for the SOFC‐GT MOO problems.
Sadegh Safari; Taher Hajilounezhad; Mehdi Ali Ehyaei. Multi‐objective optimization of solid oxide fuel cell/gas turbine combined heat and power system: A comparison between particle swarm and genetic algorithms. International Journal of Energy Research 2020, 44, 9001 -9020.
AMA StyleSadegh Safari, Taher Hajilounezhad, Mehdi Ali Ehyaei. Multi‐objective optimization of solid oxide fuel cell/gas turbine combined heat and power system: A comparison between particle swarm and genetic algorithms. International Journal of Energy Research. 2020; 44 (11):9001-9020.
Chicago/Turabian StyleSadegh Safari; Taher Hajilounezhad; Mehdi Ali Ehyaei. 2020. "Multi‐objective optimization of solid oxide fuel cell/gas turbine combined heat and power system: A comparison between particle swarm and genetic algorithms." International Journal of Energy Research 44, no. 11: 9001-9020.
A novel configuration of a coal-fired cogeneration plant is proposed in this paper. This novel system is composed of combustion chamber, Rankine cycle, absorption chiller, alkaline electrolyzer, and methanation plant. In the proposed configuration, the heat of exhaust gas from the combustion chamber can be used in a Rankine cycle to produce electricity. The heat of exhaust gas also powers the absorption chiller to provide cooling. The exhaust gas flows through a sulfur extraction unit to separate sulfur from CO2 gas. To supply electrical power, wind turbines alongside the Rankine cycle are considered. A part of the produced electricity from both the Rankine cycle and the wind turbines can be used by an alkaline electrolyzer to produce hydrogen and oxygen. The CO2 gas from sulfur unit and hydrogen gas (H2) provided by the electrolyzer can be delivered to a methanation unit to produce syngas (CH4) for different applications. The oxygen from the electrolyzer is injected into the combustion chamber to improve the combustion process. Results show that by using 80 units of 1 MW Nordic wind turbine to generate electricity, all of the CO2 in the exhaust gas is converted to syngas. The whole system energy and exergy efficiencies are equal to 16.6% and 16.2%. The highest and lowest energy efficiencies of 85% and 30.1% are related to compressor and steam power plants. The energy and exergy efficiencies of the wind turbine are 30.7% and 11.9%. The system can produce 40920.4 MWh of electricity and 180.5 MWh of cooling. As CO2 is consumed to produce syngas, the proposed system is capable of avoiding a significant amount of 2776 t CO2 emissions while producing 1009.4 t syngas annually. Based on economic analysis, the payback period of the system is 11.2 y, and internal rate of return is found to be 10%, which can prove the viability of the proposed configuration.
Z.X. Li; M.A. Ehyaei; A. Ahmadi; Danial Hamedi Jamali; R. Kumar; Stéphane Abanades. Energy, exergy and economic analyses of new coal-fired cogeneration hybrid plant with wind energy resource. Journal of Cleaner Production 2020, 269, 122331 .
AMA StyleZ.X. Li, M.A. Ehyaei, A. Ahmadi, Danial Hamedi Jamali, R. Kumar, Stéphane Abanades. Energy, exergy and economic analyses of new coal-fired cogeneration hybrid plant with wind energy resource. Journal of Cleaner Production. 2020; 269 ():122331.
Chicago/Turabian StyleZ.X. Li; M.A. Ehyaei; A. Ahmadi; Danial Hamedi Jamali; R. Kumar; Stéphane Abanades. 2020. "Energy, exergy and economic analyses of new coal-fired cogeneration hybrid plant with wind energy resource." Journal of Cleaner Production 269, no. : 122331.
The effects are investigated of using absorption chiller, heat pump, and inlet fogging systems for cooling the inlet air of a gas turbine power plant for four cities in Iran representative of different climatic conditions, namely Yazd (hot–arid), Bandar Abbas (hot–humid), Ardabil (cold-humid) and Sari (humid subtropical). Gas turbine functional parameters, quantities of emitted pollutants, prices of generated electricity and capital cost payback periods are determined. The rates of pollutants produced and fuel consumption are considered per unit of electricity generated. The results show that the best cooling system for cities with hot climates is the absorption chiller; it improves gas turbine net power by 18% in Bandar Abbas and 14% in Yazd, the energy efficiency by 5.8% in Bandar Abbas and 5.5% in Yazd, and the exergy efficiency by 2.5% in Bandar Abbas and 1.5% in Yazd. Inlet air cooling reduces NOx pollutant emissions by 60% in Bandar Abbas and 53% in Yazd and reduces electricity generated costs by 6.5% and 6.0% in Bandar Abbas and Yazd respectively. The inlet fogging system performs well only in arid regions. The most appropriate type of cooling system must be selected based on specific objectives (such as increasing power or reducing fuel consumption or reducing pollutants). In cold regions such as Ardabil, where cooling system is used only for a limited period, the heat pump system is suitable because of its low initial investment cost.
Mohammad Reza Majdi Yazdi; Fathollah Ommi; M.A. Ehyaei; Marc A. Rosen. Comparison of gas turbine inlet air cooling systems for several climates in Iran using energy, exergy, economic, and environmental (4E) analyses. Energy Conversion and Management 2020, 216, 112944 .
AMA StyleMohammad Reza Majdi Yazdi, Fathollah Ommi, M.A. Ehyaei, Marc A. Rosen. Comparison of gas turbine inlet air cooling systems for several climates in Iran using energy, exergy, economic, and environmental (4E) analyses. Energy Conversion and Management. 2020; 216 ():112944.
Chicago/Turabian StyleMohammad Reza Majdi Yazdi; Fathollah Ommi; M.A. Ehyaei; Marc A. Rosen. 2020. "Comparison of gas turbine inlet air cooling systems for several climates in Iran using energy, exergy, economic, and environmental (4E) analyses." Energy Conversion and Management 216, no. : 112944.