Search for: energy-planning
0.009 seconds
Total 22 records

    On the way of policy making to reduce the reliance of fossil fuels: Case study of Iran

    , Article Sustainability (Switzerland) ; Volume 12, Issue 24 , 2020 , Pages 1-28 Aien, M ; Mahdavi, O ; Sharif University of Technology
    MDPI AG  2020
    Nowadays, fossil fuels are well known as a predominant source of energy in the planet. Located in the Middle East region, Iran holds one of the largest fossil fuel reservoirs in the world. The country has abundant oil and natural gas fields in various regions; some of them are shared between other countries and have not reached their operational capacity yet. Meanwhile, during recent years and due to global warming followed by environmental global contracts such as Kyoto protocol, using fossil fuels is being criticized to a large extent around the world. Therefore, the global interest has been focused toward clean energy resources. Furthermore, endowed with sundry geographical pattern... 

    Optimal planning of hybrid renewable energy infrastructure for urban sustainability: Green Vancouver

    , Article Renewable and Sustainable Energy Reviews ; Volume 95 , 2018 , Pages 254-264 ; 13640321 (ISSN) Bagheri, M ; Shirzadi, N ; Bazdar, E ; Kennedy, C. A ; Sharif University of Technology
    Elsevier Ltd  2018
    Despite the great promise of hybrid solar-wind-biomass energy systems to power future sustainable cities, complexities associated with their optimal planning and design limit their wide-scale implementation. This study provides a novel systematic framework to identify optimal hybrid renewable solutions for urban areas at neighborhood scales. In particular, we examine the role of economies of scale in the techno-economic feasibility and environmental performance of hybrid renewable systems. For demonstration, we assess the impact of the economics of scale (at the neighborhood scales of 1/500, 1/250, and 1/100 of the city's electrical load) on the life-cycle costs of optimal hybrid renewable... 

    Energy planning and policy making; The case study of Iran

    , Article Energy Sources, Part B: Economics, Planning and Policy ; Volume 11, Issue 8 , 2016 , Pages 682-689 ; 15567249 (ISSN) Jafari, H. H ; Vakili, A ; Eshraghi, H ; Hamidinezhad, A ; Naseri, I ; Sharif University of Technology
    Taylor and Francis Inc 
    Due to the limited resources of fossil fuels, energy supply–demand management and planning especially in the supply-side of the energy system have increasingly become very important. This article assesses Iran’s energy system in order to find the main causes of the considerably high energy intensity in the country compared with similar economies in size and production. Accordingly, fundamental policies and strategies are proposed in order to manage the recognized bottlenecks. The conclusions suggest strongly that not only the fossil-based energy system, but also incompatible patterns of production and consumption in the reference energy system as well as the use of conventional technologies... 

    Design Hybrid Renewable Energy Systems by A Multi-objective Robust Optimization Model

    , M.Sc. Thesis Sharif University of Technology Shahbazi, Amir Hossein (Author) ; Eshghi, Kourosh (Supervisor)
    Nowadays the popularity of renewable energy is increasing due to its clean and inexhaustible nature. Also, if the local potential of each area is used, there is no cost to connect to electricity network. But these energies have low reliability due to their oscillating nature. To solve this problem, it is proposed to use systems based on several sources of energy called hybrid systems. In this research, a mathematical model is proposed to design a renewable hybrid system that minimizes the present value of costs while maximizing system’s reliability. To consider the uncertainty in the solar radiation data and energy demand, Bertsimas’s robust model is applied to our model. In which variables... 

    An Energy Supply System Model for Expansion Planning in the Restructured Environment

    , Ph.D. Dissertation Sharif University of Technology Fakehi, Amir Hossein (Author) ; Ghofrani, Mohammad Bagher (Supervisor) ; Saboohi, Yadollah (Supervisor)
    Energy industries in many countries have initiated the process of privatization. Restructuring of energy systems is usually started with dividing the vertically integrated national systems into regional companies. Due to the geographical dimension of energy systems and natural monopoly in many activities, the process of privatization has started with segmentation of the vertically integrated national systems into regional companies. Thus, regional independent companies are formed that include a collection of producers and consumers of energy in their geographic area. These regional companies are economic entities who are pursuing a policy of maximize profit. On the other hand, exchange of... 

    An appropriate multiple criteria decision making method for solving electricity planning problems, addressing sustainability issue

    , Article International Journal of Environmental Science and Technology ; Volume 8, Issue 3 , June , 2011 , Pages 605-620 ; 17351472 (ISSN) Bagheri Moghaddam, N ; Nasiri, M ; Mousavi, S. M ; Sharif University of Technology
    In the past, decision making within the energy sector, especially in Iran, was limited to economic analysis. Lately, multiple criteria decision making has gained great popularity. However, this is not enough to make a right decision by considering sustainability. This paper deals with designing an appropriate multiple criteria decision making method to address the multifaceted nature of such problems. This task is the second precondition to make a decision which meets the sustainability criterion. This is done by revealing new facts about quantitative and qualitative data and the degree of compensation between the criteria. Moreover, this paper illustrates the capability of different methods... 

    An overview of energy planning in Iran and transition pathways towards sustainable electricity supply sector

    , Article Renewable and Sustainable Energy Reviews ; Volume 112 , 2019 , Pages 58-74 ; 13640321 (ISSN) Aryanpur, V ; Atabaki, M. S ; Marzband, M ; Siano, P ; Ghayoumi, K ; Sharif University of Technology
    Elsevier Ltd  2019
    Despite a substantial potential of renewable energy sources, the current energy supply system in Iran relies almost entirely on fossil fuel resources. It has imposed significant financial burden on the country and has led to considerable GHG emissions. Moreover, the country is confronting several challenges for harnessing alternative clean energy sources and promoting rational energy policies over the recent decades. To probe the root cause of these problems, this paper first provides an overview on the previous energy planning attempts in Iran. It shows that adequate commitment to a long-term energy planning could have meaningfully prevented these serious challenges. However, the previous... 

    A model for investigation of optimal hydrogen pathway, and evaluation of environmental impacts of hydrogen supply system

    , Article International Journal of Hydrogen Energy ; Volume 33, Issue 24 , 2008 , Pages 7314-7325 ; 03603199 (ISSN) Qadrdan, M ; Saboohi, Y ; Shayegan, J ; Sharif University of Technology
    Elsevier Ltd  2008
    In order to achieve a hydrogen economy, developing widespread hydrogen supply systems are vitally important. A large number of technological options exist and are still in development for hydrogen production, storage, distribution., which cause various pathways for supplying hydrogen. Besides the technical factors, there are other effective parameters such as cost, operability, reliability, environmental impacts, safety and social implications that should be considered when assessing the different pathways as optimal and viable long-term alternatives. To aid this decision-making process, we have developed a generic optimization-based model for the long-range energy planning and design of... 

    A Novel Methodology for Reserve and Energy Scheduling Incorporating Vpps in High Penetration of Renewable Resources

    , M.Sc. Thesis Sharif University of Technology Zarrin, Arman (Author) ; Abbaspour Tehranifard, Ali (Supervisor) ; Fotuhi Firozabad, Mahmoud (Supervisor)
    Considering the high penetration of renewable energy resources in modern power systems, independent system operator faces considerable uncertainty and variability in the system under supervision. In this regard, determining and providing the appropriate amount of operational reserve is critical to overcoming uncertainty and variability to have reliable system performance. In practice, power system operators prefer to use deterministic approaches to schedule operational reserve. Such approaches have benefits in simplicity and fast calculations. Nevertheless, increasing share of renewable resources causes a considerable error in these approaches. Therefore, many researchers have proposed... 

    Load commitment in a smart home

    , Article Applied Energy ; Vol. 96, issue , 2012 , p. 45-54 ; ISSN: 03062619 Rastegar, M ; Fotuhi-Firuzabad, M ; Aminifar, F ; Sharif University of Technology
    Although demand response (DR) potentially brings miscellaneous advantages, it is currently faced with challenges in its implementation due to customers' difficulty in manually responding to the time-varying prices. This paper presents an optimal and automatic residential load commitment (LC) framework to achieve the household minimum payment. Problem decision variables are the operating status of responsive appliances and charging/discharging cycles of battery storage and plug-in hybrid electric vehicles (PHEVs). Storage capability in residential centers provide the customers with this opportunity to not only supply the local demand during the high price hours but also sell the energy back... 

    Evaluation of energy recovery and potential of hydrogen production in Iranian natural gas transmission network

    , Article Energy Policy ; Volume 61 , 2013 , Pages 65-77 ; 03014215 (ISSN) Safarian, S ; Saboohi, Y ; Kateb, M ; Sharif University of Technology
    In the natural gas transmission network, from supply points to demand nods there are various technological options that include processing, transportation, conversion and gas distribution. Comprehensive analysis of natural gas network requires evaluation of different chains of gas flow through various levels based on economical and environmental criteria subject to technical and operational constraints such as feasibility, operability and reliability of different alternatives. To aid decision-making process in the sector of natural gas, a generic optimization-based model has been developed for assessing long term energy issues related to planning and design of natural gas supply systems. The... 

    Load commitment in a smart home

    , Article Applied Energy ; Volume 96 , 2012 , Pages 45-54 ; 03062619 (ISSN) Rastegar, M ; Fotuhi Firuzabad, M ; Aminifar, F ; Sharif University of Technology
    Although demand response (DR) potentially brings miscellaneous advantages, it is currently faced with challenges in its implementation due to customers' difficulty in manually responding to the time-varying prices. This paper presents an optimal and automatic residential load commitment (LC) framework to achieve the household minimum payment. Problem decision variables are the operating status of responsive appliances and charging/discharging cycles of battery storage and plug-in hybrid electric vehicles (PHEVs). Storage capability in residential centers provide the customers with this opportunity to not only supply the local demand during the high price hours but also sell the energy back... 

    Formulating directional industry strategies for renewable energies in developing countries: The case study of Iran's wind turbine industry

    , Article Renewable Energy ; Volume 39, Issue 1 , 2012 , Pages 299-306 ; 09601481 (ISSN) Bagheri Moghaddam, N ; Mousavi, S. M ; Moallemi, E. A ; Nasiri, M ; Sharif University of Technology
    This study seeks a method for formulating directional strategy of wind turbine industry in Iran. To this end, by initially evaluating various economic viewpoints concerning the development of industries, the necessity of government intervention is recognized. By defining the concepts of national industry policy, firm technology strategy, and national technology strategy, the role of directional industry strategy is then made clear. Furthermore, the six assumptions of emphasis on formulating strategy (rather than on formulating policy), emphasis on formulating directional strategy, model's prescriptivism, emphasis on formulating the strategy at the level of industry, Iran's being a developing... 

    Dynamic optimization of natural gas networks under customer demand uncertainties

    , Article Energy ; Volume 134 , 2017 , Pages 968-983 ; 03605442 (ISSN) Ahmadian Behrooz, H ; Bozorgmehry Boozarjomehry, R ; Sharif University of Technology
    In natural gas transmission networks, the efficiency of daily operation is strongly dependent on our knowledge about the customer future demands. Unavailability of accurate demand forecasts makes it more important to be able to characterize the loads and quantify the corresponding uncertainty. A planning strategy for natural gas transmission networks under future demand uncertainty is addressed, which involves coupling of a gas transmission network dynamic simulator with the stochastic optimization framework. Loads from a gas-fired power plant are studied where the loads are characterized by a number of uncertain parameters, and unscented transform is utilized for uncertainty propagation.... 

    Multi-objective optimization for sustainable development of the power sector: An economic, environmental, and social analysis of Iran

    , Article Energy ; Volume 161 , 2018 , Pages 493-507 ; 03605442 (ISSN) Atabaki, M. S ; Aryanpur, V ; Sharif University of Technology
    Elsevier Ltd  2018
    This paper aims to analyze Iran's long-term power sector development from economic, environmental, social, and sustainable perspectives. For this purpose, a linear programming model is developed, which includes three objective functions: minimization of costs, minimization of CO2 emissions, and maximization of created jobs. To provide a sustainable plan, analytical hierarchy process is employed to allocate expert-based weights to the objective functions. Moreover, to support the decision-makers, Pareto-optimal alternatives are explored by varying the weights of objectives. The multi-objective model is solved by applying a weighted method based on fuzzy membership functions. The results show... 

    Enhanced performance of planar perovskite solar cells using TiO2/SnO2 and TiO2/WO3 bilayer structures: Roles of the interfacial layers

    , Article Solar Energy ; Volume 208 , 2020 , Pages 697-707 Kazemzadeh Otoufi, M ; Ranjbar, M ; Kermanpur, A ; Taghavinia, N ; Minbashi, M ; Forouzandeh, M ; Ebadi, F ; Sharif University of Technology
    Elsevier Ltd  2020
    In planar perovskite solar cells (PSCs), engineering the extraction and recombination of electron–hole pairs by modification of the electron transport layer (ETL)/perovskite interface is very vital for obtaining high performance. The main idea here is to improve properties of the TiO2/perovskite interface by inserting an ultra-thin layer (UTL) of WO3 or SnO2 with the thickness of less than 10 nm by RF magnetron sputtering method. The structural and electrical characteristics of the samples were tested by XRD, AFM, FE-SEM, Mott-Schottky analysis, UV–Vis spectroscopy, J-V characterization and electrochemical impedance spectroscopy (EIS). It was found that the bilayer structured ETLs exhibit... 

    Expansion planning of generation technologies in electric energy systems under water use constraints with renewable resources

    , Article Sustainable Energy Technologies and Assessments ; Volume 43 , 2021 ; 22131388 (ISSN) Pourmoosavi, M. A ; Amraee, T ; Firuzabad, M. F ; Sharif University of Technology
    Elsevier Ltd  2021
    Thermal power generation needs great volumes of water for cooling purposes. A multi-period Low Water Generation Expansion Planning (LW-GEP) model is proposed to plan the future generation mix including type, capacity, time of installation, and proper cooling system of generation technologies to supply the future electric peak loads under the water resource limitations. Different types of generation technologies with conventional and modern cooling systems are considered as expansion candidates in the proposed LW-GEP model. The access of candidate and existing power plants to the water resources are considered. Renewable resources as water smart solutions are integrated in the proposed energy... 

    An autonomous demand response program for electricity and natural gas networks in smart energy hubs

    , Article Energy ; Volume 89 , September , 2015 , Pages 490-499 ; 03605442 (ISSN) Sheikhi, A ; Bahrami, S ; Ranjbar, A. M ; Sharif University of Technology
    Elsevier Ltd  2015
    The development of technologies such as micro turbines and gas furnaces has been the major driving force towards integration of electricity and natural gas networks in the EH (energy hubs). Besides, the existing power grids are getting smarter by implementing the new generation of information technologies and communication systems. In smart grid, the electricity suppliers can modify the customers' electrical load consumption by employing appropriate scheduling schemes such as DR (demand response) programs. In this paper, we consider the S. E. Hubs (smart energy hubs) framework, in which the customers can use EMS (energy management system) to access to the electricity and natural gas prices... 

    Power sector development in Iran: a retrospective optimization approach

    , Article Energy ; Volume 140 , 2017 , Pages 330-339 ; 03605442 (ISSN) Manzoor, D ; Aryanpur, V ; Sharif University of Technology
    This paper provides an overview of the power sector development in Iran for the period 1984–2014. A retrospective optimization approach is applied to assess economic and environmental benefits that would have been achieved through appropriate long-term planning. MESSAGE, a systems engineering optimization model, is used for this analysis. Two alternative scenarios are defined to explore the impact of supply- and demand-side strategies on the power generation mix, fuel consumption and CO2 emissions. The focus on the past choice of energy scenarios provides some insights for future scenario design. The results of the cost-optimal scenarios with international fuel prices are compared with the... 

    Development of a multi-objective decision-making model to recover flare gases in a multi flare gases zone

    , Article Energy ; Volume 203 , 2020 Hamidzadeh, Z ; Sattari, S ; Soltanieh, M ; Vatani, A ; Sharif University of Technology
    Elsevier Ltd  2020
    In this paper, a systematic investigation and modeling of all available technologies (such as NGL, injection in pipelines, LNG, GTL, NGH, and CNG plants, EOR, electricity production by thermal power plants, and water generation by MED technologies) for flare gas recovery has been developed. An optimal combination of the technologies has been proposed for flare gas recovery of five oil wells in the south of Iran with different specifications as case studies. The optimal combinations of all the technologies have been investigated with minimizing the payback period of capital costs (economical) and maximizing CO2 pollutant reduction (environmental) objective functions by using the genetic...