Sourena Sattari - Academia.edu (original) (raw)

Papers by Sourena Sattari

Energy Sources, Part B: Economics, Planning, and Policy, 2016

Due to a large number of rich natural gas reserves in Iran, and considering the acceptable income... more Due to a large number of rich natural gas reserves in Iran, and considering the acceptable income from the exports of oil products, the consumption of gas instead of oil products in different consuming sectors seems to be rational. Therefore, in this article, the allocation of natural gas to different sectors such as residential, industries, power plants, transportation, reinjection to oil wells, export, and so forth is estimated based on the three scenarios using a linear programming method for the year 2025 in Iran. The results indicate that if there is no planned consumption management, the allocation of gas in future years will certainly have deficiencies in some sectors in Iran. Consequently, the feasible limit for unit replacement revenue of injection to oil wells is also calculated by sensitivity analysis on the coefficients of linear programming.

Multi-energy systems will enhance the system reliability and power quality. This paper presents a... more Multi-energy systems will enhance the system reliability and power quality. This paper presents an integrated approach for the design and operation of distributed energy resources (DER) systems, based on energy hub modeling. A multi-objective optimization model is developed by considering an integrated view of electricity and natural gas network to analyze the optimal design and operating condition of DER systems, by considering two conflicting objectives, namely, minimization of total cost and the minimization of environmental impact which is assessed in terms of CO 2 emissions. The mathematical model considers energy demands of the site, local climate data, and utility tariff structure, as well as technical and financial characteristics of the candidate DER technologies. To provide energy demands, energy systems including photovoltaic, and co-generation systems, boiler, central power grid are considered. As an illustrative example, a hotel in Iran demonstrates potential applicatio...

International Journal of Hydrogen Energy, 2014

performing the system optimization by considering two different objectives, namely, minimization ... more performing the system optimization by considering two different objectives, namely, minimization of energy transfer loss and maximization of hydrogen production. The optimum system that focuses solely on maximum hydrogen production can produce 2.2% more hydrogen than with its objective being minimum energy transfer loss. However, it results in 68% more energy transfer loss in the process. The values can be adjusted with options that include a combination of the two objectives. Additionally, optimal variables can be found through the ICA method.

International Journal of Sustainable Energy, 2014

ABSTRACT In this study, hydrogen generation is maximised by optimising the size and the operating... more ABSTRACT In this study, hydrogen generation is maximised by optimising the size and the operating conditions of an electrolyser (EL) directly connected to a photovoltaic (PV) module at different irradiance. Due to the variations of maximum power points of the PV module during a year and the complexity of the system, a nonlinear approach is considered. A mathematical model has been developed to determine the performance of the PV/EL system. The optimisation methodology presented here is based on the particle swarm optimisation algorithm. By this method, for the given number of PV modules, the optimal sizeand operating condition of a PV/EL system areachieved. The approach can be applied for different sizes of PV systems, various ambient temperatures and different locations with various climaticconditions. The results show that for the given location and the PV system, the energy transfer efficiency of PV/EL system can reach up to 97.83%.

Journal of Nanoscience and Nanotechnology, 2010

Ni/SiO 2 fine nanoparticles were prepared by coprecipitation method using various nonionic surfac... more Ni/SiO 2 fine nanoparticles were prepared by coprecipitation method using various nonionic surfactants as templates with Tylose as a binder dispersant. Scanning Electron Microscope (SEM) and X-ray Diffraction (XRD) have been used to study the templates influence on the morphology of the produced samples. Although the phase structure remained as a tetrahedron amorphous cristobalite-sin-SiO 2 (101,100), rhombohedron and cubic NiO, but samples with different morphology (homogeneous nano spherical, nano rose flower and nano cubic shapes) have been achieved. These fine nanoparticles as syngas catalysts in Partial Oxidation of Methane to Hydrogen and Carbon Monoxide (POM) have been studied. Because of high Hydrogen production, it is a candidate to be a green fuel. A fixed-bed reactor at P = 1 atm, T = 800 C, H 2 /CO = 1.8, GHSV (CH 4 = 6000/hr and BET = 25, 63.5 and 87.1 m 2 /gr have been used as POM catalyst. From other hand these fine compounds could be converted to metallic nanotube (nanofiber) at above 850 C and also bamboo shape tip mode carbon nanotube by thermal chemical vapor deposition at 800 C. Transmission Electron Microscopy confirmed the metallic nanotube or single nano crystal growth. The Raman spectroscopy of all samples has been studied to confirm the different formation of Ni-Si. Choosing different templates for production of these nanoparticles could create width range of medical and industrial applications.

In this paper, five options of Iran's gas flare recovery have been compared via MCDM method. ... more In this paper, five options of Iran's gas flare recovery have been compared via MCDM method. For developing the model, the weighing factor of each indicator an AHP method is used via the Expert-choice software. Several cases were considered in this analysis. They are defined where the priorities were defined always keeping one criterion in first position, while the priorities of the other criteria were defined by ordinal information defining the mutual relations of the criteria and the respective indicators. The results, show that amongst these cases, priority is obtained for CHP usage where availability indicator is highly weighted while the pipeline usage is obtained where environmental indicator highly weighted and the injection priority is obtained where economic indicator is highly weighted and also when the weighing factor of all the criteria are the same the Injection priority is obtained.

Proceedings of the 3rd Iasme Wseas International Conference on Energy Environment, Feb 23, 2008

Silica aerogels are unique porous nanomaterials consisting of more than 90% air and less than 10%... more Silica aerogels are unique porous nanomaterials consisting of more than 90% air and less than 10% solid silica in the form of highly cross-linked network structure. Because of their unique properties, i.e., large surface area, very low bulk density and very low thermal conductivity, silica aerogels have received significant attention in many fields such as thermal insulation. In the present work the utilization of aerogels as thermal insulators in chemical plants is investigated through a case study. The case study is concerned about steam pipes of an engine oil plant. A rigorous comparison between aerogel and five commercial insulators has been done to demonstrate the efficiency of aerogel. To ease the formulation of the problem and to use the thermodynamic models a commercial simulator has been used.

Energy Sources, Part B: Economics, Planning, and Policy, 2016

ABSTRACT Since there are a great number of rich natural gas resources in Iran, and considering th... more ABSTRACT Since there are a great number of rich natural gas resources in Iran, and considering the acceptable income from oil products exports, the consumption of gas instead of oil products in different sectors seems to be logical. Therefore, in this paper, the allocation of natural gas to different sectors such as residential, industries, power plants, transportation, re injection to oil wells, export, and so forth is estimated based on the three scenarios using linear programming method for the year 2025 in Iran. The results show that if there is no planned consumption management, the allocation of gas in future years will certainly have deficiencies in some sectors in Iran. Consequently, the feasible limit for unit replacement revenue of injection to oil wells is also calculated by sensitivity analysis on the coefficients of linear programming.

Industrial & Engineering Chemistry Research, 2016

Energy Conversion and Management, 2016

Volume 6B: Energy, 2014

Hydrogen is considered to be the fuel of the future. It is a cleaner alternative to the fossil fu... more Hydrogen is considered to be the fuel of the future. It is a cleaner alternative to the fossil fuels we consume every day. Of all the different hydrogen production pathways that exist, producing the gas by utilizing the power generated by renewable energy sources has been a topic of interest for many researchers across the world. The following work focuses on minimizing the energy loss by optimizing the size and the operating conditions of an electrolyzer directly connected to a photovoltaic (PV) module at different irradiance. The hydrogen, in the proposed system, is produced using a proton exchange membrane (PEM) electrolyzer. A nonlinear method is considered, because of the complexity of the system and the variation in maximum power points (MPP) of the PV module throughout the year. A generic model has been also developed to determine the performance of photovoltaic-electrolyzer (PV/EL) system. Additionally, a whole year weather data set is employed to estimate annual electricity generation, I-V curves and MPPs of the PV module.

International Journal of Greenhouse Gas Control, 2016

Proceedings of the 3rd Iasme Wseas International Conference on Energy Environment, Feb 23, 2008

... refineries SOURENA SATTARI, AKRAM AVAMI Internatinal Institute for Energy Studies (iies) No. ... more ... refineries SOURENA SATTARI, AKRAM AVAMI Internatinal Institute for Energy Studies (iies) No. 14, Sayeh St., Valiasr Ave., Tehran, IR Iran ... 350 150 232 0 50 100 150 200 250 300 350 400 Teh ran Isfa han Tab riz Shiraz Kerm an sh ah Lav an Ab adan Ara k Band ar A bbas ...

Growing concerns arise about energy consumption and its adverse environmental impact in recent ye... more Growing concerns arise about energy consumption and its adverse environmental impact in recent years in Iran in which cause manufactures to establish energy management groups. Cement production has been one of the most energy intensive industries in the world. Focusing on energy consumption reduction efforts through process improvement, production management and introducing new technologies can achieve significant results. This study, based on conducting on-site energy audits of over 30 cement firms in Iran during 2004-2005, discovered the following energy-saving potentials: electricity savings of 223.5*10 6 KWh equivalent to 11.3M$, fuel oil savings of 168*10 6 Lit equivalent to 39.4M$ in FOB prices. The present paper will study the energy consumption in cement industry in Iran through real auditing and identify technological opportunities in order to decrease energy consumption of the relevant factories, increase the productivity, and improve the production process. Relevant standards planned by government that can provide significant potentials, are discussed too.

Multi-energy systems will enhance the system reliability and power quality. This paper presents a... more Multi-energy systems will enhance the system reliability and power quality. This paper presents an integrated approach for the design and operation of distributed energy resources (DER) systems, based on energy hub modeling. A multi-objective optimization model is developed by considering an integrated view of electricity and natural gas network to analyze the optimal design and operating condition of DER systems, by considering two conflicting objectives, namely, minimization of total cost and the minimization of environmental impact which is assessed in terms of CO 2 emissions. The mathematical model considers energy demands of the site, local climate data, and utility tariff structure, as well as technical and financial characteristics of the candidate DER technologies. To provide energy demands, energy systems including photovoltaic, and co-generation systems, boiler, central power grid are considered. As an illustrative example, a hotel in Iran demonstrates potential applicatio...

In this paper, five options of Iran's gas flare recovery have been compared via MCDM method. ... more In this paper, five options of Iran's gas flare recovery have been compared via MCDM method. For developing the model, the weighing factor of each indicator an AHP method is used via the Expert-choice software. Several cases were considered in this analysis. They are defined where the priorities were defined always keeping one criterion in first position, while the priorities of the other criteria were defined by ordinal information defining the mutual relations of the criteria and the respective indicators. The results, show that amongst these cases, priority is obtained for CHP usage where availability indicator is highly weighted while the pipeline usage is obtained where environmental indicator highly weighted and the injection priority is obtained where economic indicator is highly weighted and also when the weighing factor of all the criteria are the same the Injection priority is obtained.

2015 International Conference on Industrial Engineering and Operations Management (IEOM), 2015

Hydrogen is an important storage medium and can be produced by the water electrolysis. In this re... more Hydrogen is an important storage medium and can be produced by the water electrolysis. In this research, energy transfer loss between a photovoltaic (PV) unit and electrolyzer is minimized by optimizing the size and operating condition of an electrolyzer directly connected to a PV module. In directly coupled photovoltaic-electrolyzer (PV/EL) systems, there is a mismatch between output PV's maximum power point characteristic and input PEM electrolyzer's characteristic. With proper sizing optimization methods, it is possible to directly couple photovoltaic-electrolyzer systems. The evolutionary optimization algorithms like genetic algorithm (GA), particle swarm optimization (PSO) and imperialist competitive algorithm (ICA) are ideal for handling this kind of problems due to nonlinear behavior of the system during a year. However, each algorithm has its own advantages and disadvantages. In this paper a PV/EL system is simulated and then comparisons among the three evolutionary algorithms are presented for optimization of the system; in terms of processing time, convergence speed, and quality of the results. Based on the comparative analysis, the performance of the algorithms differs in various aspects which make them more or less best suited for such a kind of problem.

International Journal of Sustainable Energy, 2014

Renewable Energy, 2006

In building energy simulation, an integrated modelling of airflow in the building needed. Therefo... more In building energy simulation, an integrated modelling of airflow in the building needed. Therefore, in this paper two approaches are used for building energy simulation: zonal network for modelling of the building segments and Computational Fluid Dynamics (CFD) for modelling of the airflow. It is noted that a synchronize solution process is needed for the building and the CFD equation-sets. For this purpose an iterative procedure is used to corresponding solution of these equations. q

Energy Sources, Part B: Economics, Planning, and Policy, 2016

Due to a large number of rich natural gas reserves in Iran, and considering the acceptable income... more Due to a large number of rich natural gas reserves in Iran, and considering the acceptable income from the exports of oil products, the consumption of gas instead of oil products in different consuming sectors seems to be rational. Therefore, in this article, the allocation of natural gas to different sectors such as residential, industries, power plants, transportation, reinjection to oil wells, export, and so forth is estimated based on the three scenarios using a linear programming method for the year 2025 in Iran. The results indicate that if there is no planned consumption management, the allocation of gas in future years will certainly have deficiencies in some sectors in Iran. Consequently, the feasible limit for unit replacement revenue of injection to oil wells is also calculated by sensitivity analysis on the coefficients of linear programming.

Multi-energy systems will enhance the system reliability and power quality. This paper presents a... more Multi-energy systems will enhance the system reliability and power quality. This paper presents an integrated approach for the design and operation of distributed energy resources (DER) systems, based on energy hub modeling. A multi-objective optimization model is developed by considering an integrated view of electricity and natural gas network to analyze the optimal design and operating condition of DER systems, by considering two conflicting objectives, namely, minimization of total cost and the minimization of environmental impact which is assessed in terms of CO 2 emissions. The mathematical model considers energy demands of the site, local climate data, and utility tariff structure, as well as technical and financial characteristics of the candidate DER technologies. To provide energy demands, energy systems including photovoltaic, and co-generation systems, boiler, central power grid are considered. As an illustrative example, a hotel in Iran demonstrates potential applicatio...

International Journal of Hydrogen Energy, 2014

performing the system optimization by considering two different objectives, namely, minimization ... more performing the system optimization by considering two different objectives, namely, minimization of energy transfer loss and maximization of hydrogen production. The optimum system that focuses solely on maximum hydrogen production can produce 2.2% more hydrogen than with its objective being minimum energy transfer loss. However, it results in 68% more energy transfer loss in the process. The values can be adjusted with options that include a combination of the two objectives. Additionally, optimal variables can be found through the ICA method.

International Journal of Sustainable Energy, 2014

ABSTRACT In this study, hydrogen generation is maximised by optimising the size and the operating... more ABSTRACT In this study, hydrogen generation is maximised by optimising the size and the operating conditions of an electrolyser (EL) directly connected to a photovoltaic (PV) module at different irradiance. Due to the variations of maximum power points of the PV module during a year and the complexity of the system, a nonlinear approach is considered. A mathematical model has been developed to determine the performance of the PV/EL system. The optimisation methodology presented here is based on the particle swarm optimisation algorithm. By this method, for the given number of PV modules, the optimal sizeand operating condition of a PV/EL system areachieved. The approach can be applied for different sizes of PV systems, various ambient temperatures and different locations with various climaticconditions. The results show that for the given location and the PV system, the energy transfer efficiency of PV/EL system can reach up to 97.83%.

Journal of Nanoscience and Nanotechnology, 2010

Ni/SiO 2 fine nanoparticles were prepared by coprecipitation method using various nonionic surfac... more Ni/SiO 2 fine nanoparticles were prepared by coprecipitation method using various nonionic surfactants as templates with Tylose as a binder dispersant. Scanning Electron Microscope (SEM) and X-ray Diffraction (XRD) have been used to study the templates influence on the morphology of the produced samples. Although the phase structure remained as a tetrahedron amorphous cristobalite-sin-SiO 2 (101,100), rhombohedron and cubic NiO, but samples with different morphology (homogeneous nano spherical, nano rose flower and nano cubic shapes) have been achieved. These fine nanoparticles as syngas catalysts in Partial Oxidation of Methane to Hydrogen and Carbon Monoxide (POM) have been studied. Because of high Hydrogen production, it is a candidate to be a green fuel. A fixed-bed reactor at P = 1 atm, T = 800 C, H 2 /CO = 1.8, GHSV (CH 4 = 6000/hr and BET = 25, 63.5 and 87.1 m 2 /gr have been used as POM catalyst. From other hand these fine compounds could be converted to metallic nanotube (nanofiber) at above 850 C and also bamboo shape tip mode carbon nanotube by thermal chemical vapor deposition at 800 C. Transmission Electron Microscopy confirmed the metallic nanotube or single nano crystal growth. The Raman spectroscopy of all samples has been studied to confirm the different formation of Ni-Si. Choosing different templates for production of these nanoparticles could create width range of medical and industrial applications.

In this paper, five options of Iran's gas flare recovery have been compared via MCDM method. ... more In this paper, five options of Iran's gas flare recovery have been compared via MCDM method. For developing the model, the weighing factor of each indicator an AHP method is used via the Expert-choice software. Several cases were considered in this analysis. They are defined where the priorities were defined always keeping one criterion in first position, while the priorities of the other criteria were defined by ordinal information defining the mutual relations of the criteria and the respective indicators. The results, show that amongst these cases, priority is obtained for CHP usage where availability indicator is highly weighted while the pipeline usage is obtained where environmental indicator highly weighted and the injection priority is obtained where economic indicator is highly weighted and also when the weighing factor of all the criteria are the same the Injection priority is obtained.

Proceedings of the 3rd Iasme Wseas International Conference on Energy Environment, Feb 23, 2008

Silica aerogels are unique porous nanomaterials consisting of more than 90% air and less than 10%... more Silica aerogels are unique porous nanomaterials consisting of more than 90% air and less than 10% solid silica in the form of highly cross-linked network structure. Because of their unique properties, i.e., large surface area, very low bulk density and very low thermal conductivity, silica aerogels have received significant attention in many fields such as thermal insulation. In the present work the utilization of aerogels as thermal insulators in chemical plants is investigated through a case study. The case study is concerned about steam pipes of an engine oil plant. A rigorous comparison between aerogel and five commercial insulators has been done to demonstrate the efficiency of aerogel. To ease the formulation of the problem and to use the thermodynamic models a commercial simulator has been used.

Energy Sources, Part B: Economics, Planning, and Policy, 2016

ABSTRACT Since there are a great number of rich natural gas resources in Iran, and considering th... more ABSTRACT Since there are a great number of rich natural gas resources in Iran, and considering the acceptable income from oil products exports, the consumption of gas instead of oil products in different sectors seems to be logical. Therefore, in this paper, the allocation of natural gas to different sectors such as residential, industries, power plants, transportation, re injection to oil wells, export, and so forth is estimated based on the three scenarios using linear programming method for the year 2025 in Iran. The results show that if there is no planned consumption management, the allocation of gas in future years will certainly have deficiencies in some sectors in Iran. Consequently, the feasible limit for unit replacement revenue of injection to oil wells is also calculated by sensitivity analysis on the coefficients of linear programming.

Industrial & Engineering Chemistry Research, 2016

Energy Conversion and Management, 2016

Volume 6B: Energy, 2014

Hydrogen is considered to be the fuel of the future. It is a cleaner alternative to the fossil fu... more Hydrogen is considered to be the fuel of the future. It is a cleaner alternative to the fossil fuels we consume every day. Of all the different hydrogen production pathways that exist, producing the gas by utilizing the power generated by renewable energy sources has been a topic of interest for many researchers across the world. The following work focuses on minimizing the energy loss by optimizing the size and the operating conditions of an electrolyzer directly connected to a photovoltaic (PV) module at different irradiance. The hydrogen, in the proposed system, is produced using a proton exchange membrane (PEM) electrolyzer. A nonlinear method is considered, because of the complexity of the system and the variation in maximum power points (MPP) of the PV module throughout the year. A generic model has been also developed to determine the performance of photovoltaic-electrolyzer (PV/EL) system. Additionally, a whole year weather data set is employed to estimate annual electricity generation, I-V curves and MPPs of the PV module.

International Journal of Greenhouse Gas Control, 2016

Proceedings of the 3rd Iasme Wseas International Conference on Energy Environment, Feb 23, 2008

... refineries SOURENA SATTARI, AKRAM AVAMI Internatinal Institute for Energy Studies (iies) No. ... more ... refineries SOURENA SATTARI, AKRAM AVAMI Internatinal Institute for Energy Studies (iies) No. 14, Sayeh St., Valiasr Ave., Tehran, IR Iran ... 350 150 232 0 50 100 150 200 250 300 350 400 Teh ran Isfa han Tab riz Shiraz Kerm an sh ah Lav an Ab adan Ara k Band ar A bbas ...

Growing concerns arise about energy consumption and its adverse environmental impact in recent ye... more Growing concerns arise about energy consumption and its adverse environmental impact in recent years in Iran in which cause manufactures to establish energy management groups. Cement production has been one of the most energy intensive industries in the world. Focusing on energy consumption reduction efforts through process improvement, production management and introducing new technologies can achieve significant results. This study, based on conducting on-site energy audits of over 30 cement firms in Iran during 2004-2005, discovered the following energy-saving potentials: electricity savings of 223.5*10 6 KWh equivalent to 11.3M$, fuel oil savings of 168*10 6 Lit equivalent to 39.4M$ in FOB prices. The present paper will study the energy consumption in cement industry in Iran through real auditing and identify technological opportunities in order to decrease energy consumption of the relevant factories, increase the productivity, and improve the production process. Relevant standards planned by government that can provide significant potentials, are discussed too.

Multi-energy systems will enhance the system reliability and power quality. This paper presents a... more Multi-energy systems will enhance the system reliability and power quality. This paper presents an integrated approach for the design and operation of distributed energy resources (DER) systems, based on energy hub modeling. A multi-objective optimization model is developed by considering an integrated view of electricity and natural gas network to analyze the optimal design and operating condition of DER systems, by considering two conflicting objectives, namely, minimization of total cost and the minimization of environmental impact which is assessed in terms of CO 2 emissions. The mathematical model considers energy demands of the site, local climate data, and utility tariff structure, as well as technical and financial characteristics of the candidate DER technologies. To provide energy demands, energy systems including photovoltaic, and co-generation systems, boiler, central power grid are considered. As an illustrative example, a hotel in Iran demonstrates potential applicatio...

In this paper, five options of Iran's gas flare recovery have been compared via MCDM method. ... more In this paper, five options of Iran's gas flare recovery have been compared via MCDM method. For developing the model, the weighing factor of each indicator an AHP method is used via the Expert-choice software. Several cases were considered in this analysis. They are defined where the priorities were defined always keeping one criterion in first position, while the priorities of the other criteria were defined by ordinal information defining the mutual relations of the criteria and the respective indicators. The results, show that amongst these cases, priority is obtained for CHP usage where availability indicator is highly weighted while the pipeline usage is obtained where environmental indicator highly weighted and the injection priority is obtained where economic indicator is highly weighted and also when the weighing factor of all the criteria are the same the Injection priority is obtained.

2015 International Conference on Industrial Engineering and Operations Management (IEOM), 2015

Hydrogen is an important storage medium and can be produced by the water electrolysis. In this re... more Hydrogen is an important storage medium and can be produced by the water electrolysis. In this research, energy transfer loss between a photovoltaic (PV) unit and electrolyzer is minimized by optimizing the size and operating condition of an electrolyzer directly connected to a PV module. In directly coupled photovoltaic-electrolyzer (PV/EL) systems, there is a mismatch between output PV's maximum power point characteristic and input PEM electrolyzer's characteristic. With proper sizing optimization methods, it is possible to directly couple photovoltaic-electrolyzer systems. The evolutionary optimization algorithms like genetic algorithm (GA), particle swarm optimization (PSO) and imperialist competitive algorithm (ICA) are ideal for handling this kind of problems due to nonlinear behavior of the system during a year. However, each algorithm has its own advantages and disadvantages. In this paper a PV/EL system is simulated and then comparisons among the three evolutionary algorithms are presented for optimization of the system; in terms of processing time, convergence speed, and quality of the results. Based on the comparative analysis, the performance of the algorithms differs in various aspects which make them more or less best suited for such a kind of problem.

International Journal of Sustainable Energy, 2014

Renewable Energy, 2006

In building energy simulation, an integrated modelling of airflow in the building needed. Therefo... more In building energy simulation, an integrated modelling of airflow in the building needed. Therefore, in this paper two approaches are used for building energy simulation: zonal network for modelling of the building segments and Computational Fluid Dynamics (CFD) for modelling of the airflow. It is noted that a synchronize solution process is needed for the building and the CFD equation-sets. For this purpose an iterative procedure is used to corresponding solution of these equations. q