Search for: energy-supplies
0.005 seconds
Total 23 records

    Blockchain technology application challenges in renewable energy supply chain management

    , Article Environmental Science and Pollution Research ; 2022 ; 09441344 (ISSN) Almutairi, K ; Hosseini Dehshiri, S. J ; Hosseini Dehshiri, S. S ; Hoa, A. X ; Arockia Dhanraj, J ; Mostafaeipour, A ; Issakhov, A ; Techato, K ; Sharif University of Technology
    Springer Science and Business Media Deutschland GmbH  2022
    With the advent of new technologies and globalization of business, supply chains have turned into indispensable tools for gaining competitive advantage. The application of new technologies like blockchain can benefit sustainable energy supply chains by improving chain and logistics operations in the areas of trust, transparency and accountability, cooperation, information sharing, financial exchanges, and supply chain integration. However, the efforts to adopt such technologies in supply chains tend to face many challenges and challenges, which can seriously threaten their success. Therefore, it is crucial to carefully examine the challenges to blockchain technology application. This... 

    Development and Application of a Model for Assessment of Energy Sector in Middle East and the Role of Iran

    , M.Sc. Thesis Sharif University of Technology Moayed, Mojtaba (Author) ; Saboohi, Yadollah (Supervisor)
    The Middle-East with its enormous fossil fuel resources is considered as one of the most important regions with regard to the future world energy outlook. The region produced more than 32% and 16% of the world oil and gas, respectively, in 2012 and contains more than 48% of proven oil and 43% of proven gas reserves in the world and with 78 years of reserves-to-production ratio (RPR or R/P) has a key role in global energy provision. However, the energy issues in the region are intensifying. For instance, the fossil resources are pushed to the second half of their life time due to massive exploitation which results in change in production processes and raises the need for energy investment, on... 

    Future Studies of Sustainability Indicators of Iranian Supply Energy System

    , M.Sc. Thesis Sharif University of Technology Nejatian, Mohammad Ebrahim (Author) ; Maleki, Abbas (Supervisor)
    According to current trend of energy production and consumption in the world, economic problems in various countries and too many eco-system disorders in which created by an unsustainable trend in development, recently, the concept of “sustainability” and in the following “sustainable development” has been featured by scientists, researchers and policy makers in different scientific disciplines specially energy system engineering. Therefore exact recognition of unsustainability of local and global energy supply and demand system is very essential. In this research after selection of five energy indicators for sustainable development by Delphi and MCDM methods, future perspective of Iranian... 

    An optimization model for the long-term energy planning based on useful energy, economic and environmental pollution reduction in residential sector: a case of Iran

    , Article Journal of Building Engineering ; Volume 30 , 2020 Ahmadi, S ; Fakehi, A. H ; Vakili, A ; Moeini Aghtaie, M ; Sharif University of Technology
    Elsevier Ltd  2020
    Energy developments plays a crucial role in the political power, economic growth, social development and environmental degradation of developing countries. Energy consumption in residential sector is an essential issue for providing a large variety of services that are necessary for social life tasks such as heating, cooling, and lighting. Therefore, there is a need for depiction of energy outlook and selection of appropriate strategies as the main pillars of economic and political stability in each society. The main objective of this research is to design and apply a methodology that helps decision makers for simulation, optimization and analysis of the residential sector energy system. The... 

    Technical and Economic Evaluation Model for Sustainable Combining of Diverse Technologies for Optimized Supplying of Water, Energy and Feed in Greenhouse

    , M.Sc. Thesis Sharif University of Technology Hezarkhani, Mohammad Hossein (Author) ; Saboohi, Yadollah (Supervisor)
    One of the ways to solve the problem of water scarcity in the agricultural sector is the development of the greenhouse. Using greenhouse and control of its internal conditions can increase productivity and reduce water consumption. But the issue that needs to be noted is higher energy consumption in greenhouses in comparison to traditional agriculture. The purpose of the present research is to evaluate the various technologies of supplying water and energy with a view to the climate, type of equipment and economic parameters. An analytical tool for designing and operation of the greenhouse have been developed and presented that may be applied in greenhouse sector. It is possible to evaluate... 

    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... 

    Model for analysis of energy flow from tank-to-wheel in a passenger vehicle

    , Article 2005 IEEE Vehicle Power and Propulsion Conference, VPPC, Chicago, IL, 7 September 2005 through 9 September 2005 ; Volume 2005 , 2005 , Pages 150-153 ; 0780392809 (ISBN); 9780780392809 (ISBN) Farzaneh, H ; Saboohi, Y ; Sharif University of Technology
    Analysis of multi dimensional interactions of flow of energy in passenger vehicle is a complex task that necessitates development and utilization of analytical tools. Development of analytical tools with high complexity is usually based on conclusions of many concepts and theories from different scientific disciplines. In this approach, Passenger vehicle is supposed to be organized in the form of a firm and appears in the market that oriented towards establishing an effective energy supply system which may be identified as delivering the product (person per mileage removable) with minimum operation costs. To this end, an optimization model named POWER software founded on theory of firm of... 

    An optimization study of a palm oil-based regional bio-energy supply chain under carbon pricing and trading policies

    , Article Clean Technologies and Environmental Policy ; Volume 20, Issue 1 , 2018 , Pages 113-125 ; 1618954X (ISSN) Memari, A ; Ahmad, R ; Abdul Rahim, A. R ; Akbari Jokar, M. R ; Sharif University of Technology
    Springer Verlag  2018
    Biomass residues due to their low bulk density typically require frequent transportation from biomass plantations in rural areas to conversion bio-energy power plants. This issue contrasts with environmental protection strategies, especially when power plants are facing different carbon reduction policies that enforce them to emit less than a given specific carbon amount. Although several researchers have investigated bio-energy supply chains concerning environmental policies, the majority of studies have been devoted to strategic decisions over a single planning period. This paper presents a multi-period bio-energy supply chain under carbon pricing (carbon tax) and carbon trading... 

    Pollution Cost assessment of Energy Systems; Case Study: Guilan Province

    , M.Sc. Thesis Sharif University of Technology Noorikhah, Mahyar (Author) ; Saboohi, Yadollah (Supervisor)
    The energy section has a significant share in the emission of environmental pollutants. Based on the recent investigations about 80 percent of greenhouse gases are emitted into the environment from this sector. This present research has focused on estimating costs of pollution control, using the energy system model. In order to have a better understanding of the relationship between energy and environment, the reference energy system for Guilan Province has been developed; then by having energy demand data, historical capacity data for each technologies and potential of energy resources as well as, the development of provincial energy system has been studied. After the model verification and... 

    Optimisation of Energy Flow Model for an Educational Building

    , M.Sc. Thesis Sharif University of Technology Ghomian, Atefe (Author) ; Saboohi, Yadollah (Supervisor) ; Roshandel, Ramin (Supervisor)
    Increase in energy consumed by buildings, which constitute about 40% of the global final energy consumption and their respective contribution to CO2 emmission has led the building owners and users toward using on–site energy production systems and especially clean energy sources. The present research aims to find the optimal solution to the building energy supply problem under current and other possible circumstances. Energy Engineering Department of Sharif University of Technology has been selected in representation of educational buildings in Iran for case study. ESM software which is based on the MESSAGE model has been used as the modeling tool. Results state that under the current... 

    Resilience Analysis of Energy Supply Networks by Agent-based Modelling and Simulation

    , M.Sc. Thesis Sharif University of Technology Adelipour, Sajjad (Author) ; shadrokh Sikari, Shahram (Supervisor)
    In this thesis, the resilience of energy supply networks and the application of Agent Based Modeling in the resilience analysis of power microgrids are studied. The main idea is to use microgrids as a solution to make power systems resilient. A microgrid with autonomous agents consisting of renewable resources, non-dispatchable generators, dispatchable generators, residential loads, critical loads, battery storages, and microgrid controller is investigated. Each agent is autonomous and has independent behavior such that the interaction between these agents produces emergent phenomena at the system level in the microgrid. In the developed model, residential consumers try to optimize their... 

    A comprehensive energy supply model in an office building based on the reference energy system

    , Article International Journal of Sustainable Energy ; Volume 35, Issue 1 , 2016 , Pages 88-102 ; 14786451 (ISSN) Masoumzadeh, A ; Rasekhi, H ; Fathi, A ; Sharif University of Technology
    Taylor and Francis Ltd 
    In the last decade, technological innovations have resulted in considering distributed generation with heat recovery capability in addition to centralised generation. This work aims to develop a comprehensive model analysing techno-economic parameters of energy supply in an office building. The energy model is developed on the basis of the reference energy system with the linear programming technique. The objective function is the annual value of total costs of the energy supply system. The results of the model for the building of Sharif Energy Research Institute indicate that the most appropriate generation technology is an internal combustion engine of 461 kW and a water boiler of 152 kW.... 

    Multi objective planning for sustainable retrofit of educational buildings

    , Article Journal of Building Engineering ; Volume 24 , 2019 ; 23527102 (ISSN) Soleimani Javid, A ; Aramoun, F ; Bararzadeh, M ; Avami, A ; Sharif University of Technology
    Elsevier Ltd  2019
    The sustainable retrofit options may significantly improve the energy consumption and the environmental impacts of the existing buildings. This paper presents a multi objective optimization framework to reach the minimum economic costs and Global Warming Potential (GWP) impact of existing buildings. New energy-efficient technologies for the supply side of the energy system are considered which may minimize life cycle environmental impacts of buildings. Two educational buildings in the campus of Sharif University of Technology are studied. The results show that utilizing reciprocating engine and exhaust-fired absorption chiller reduce the GWP to 133 tons (17.79% of reduction) and 190 tones... 

    A thorough analysis of renewable hydrogen projects development in Uzbekistan using MCDM methods

    , Article International Journal of Hydrogen Energy ; Volume 46, Issue 61 , 2021 , Pages 31174-31190 ; 03603199 (ISSN) Mostafaeipour, A ; Hosseini Dehshiri, S. S ; Hosseini Dehshiri, S. J ; Almutairi, K ; Taher, R ; Issakhov, A ; Techato, K ; Sharif University of Technology
    Elsevier Ltd  2021
    The energy supply system of Uzbekistan is not well positioned to meet the rapidly rising domestic energy demand of this country. Uzbekistan's current energy supply system is outdated and has very low diversity, as most of its energy comes from natural gas. In addition to producing immense amounts of greenhouse gas and environmental pollution, this situation is untenable considering the eventual depletion of fossil fuel reserves of this country. Uzbekistan's renewable energy sector is highly undeveloped, a situation that can be attributed to the lack of coherent policies for the advancement of renewable power and the low price of natural gas. However, this country has significant untapped... 

    Stochastic modeling of the energy supply system with uncertain fuel price - A case of emerging technologies for distributed power generation

    , Article Applied Energy ; Volume 93 , 2012 , Pages 668-674 ; 03062619 (ISSN) Mirkhani, S ; Saboohi, Y ; Sharif University of Technology
    A deterministic energy supply model with bottom-up structure has limited capability in handling the uncertainties. To enhance the applicability of such a model in an uncertain environment two main issues have been investigated in the present paper. First, a binomial lattice is generated based on the stochastic nature of the source of uncertainty. Second, an energy system model (ESM) has been reformulated as a multistage stochastic problem. The result of the application of the modified energy model encompasses all uncertain outcomes together and enables optimal timing of capacity expansion. The performance of the model has been demonstrated with the help of a case study. The case study has... 

    Dynamic economic evaluation of distribution automation systems

    , Article 2009 International Conference on Electric Power and Energy Conversion Systems, EPECS 2009 ; 2009 ; 9789948427155 (ISBN) Rahmani, S ; Ehsan, M ; Sharif University of Technology
    In a deregulated environment of power distribution industry, a comprehensive economic evaluation for the implementation of distribution automation (DA) systems is inevitable. Using the presented methodology in this paper and system dynamics approach, it is efficiently possible to deal with variation of the economic parameters such as the interest rate, inflation rate, energy supply cost, load growth, etc. In this paper, economic short-run and long-run impacts of DA systems are evaluated from utility point of view. Also economic benefits from customers' point of view are analyzed. A practical pricing strategy for maximizing the utility profit is suggested depending on the underlying market... 

    Development of Energy Supply Model under Uncertainty

    , Ph.D. Dissertation Sharif University of Technology Mirkhani, Shahin (Author) ; Saboohi, Yadollah (Supervisor)
    Energy supply system model (ESM) is used as an analytical tool for policy making and optimizing the allocation of energy resources, selecting the best combination of energy carriers and technologies, and also determining required investments for development and operation of energy supply system, in order to meet the useful demand of energy. Although the modeled process in this Bottom-Up mathematical tool has deterministic characteristics, but evolution of exogenous parameters for energy sector have uncertainty which may impact on results of energy model. Limitations of applied methods for application of deterministic energy models under uncertain conditions result that all uncertain... 

    Extended energy return on investment of multiproduct energy systems

    , Article Energy ; Volume 192 , 2020 Salehi, M ; Khajehpour, H ; Saboohi, Y ; Sharif University of Technology
    Elsevier Ltd  2020
    Energy Return on Investment (EROI) is an indicator of how efficient is an energy supply system. In the present study, the conventional approach of EROI assessment is extended to include the equivalent energy investment needed for offsetting the life cycle environmental impacts. Moreover, the issue of allocation of the invested energy among different by-products is addressed. The EROI of multiple products has been specified using different benchmarks of price, energy content, exergy content, and exergy costs. The application of the concept is demonstrated through a case study of an Iranian oil production unit. The overall conventional and environmentally-extended EROI values of the produced... 

    Multi objective distributed generation planning using NSGA-II

    , Article 2008 13th International Power Electronics and Motion Control Conference, EPE-PEMC 2008, Poznan, 1 September 2008 through 3 September 2008 ; 2008 , Pages 1847-1851 ; 9781424417421 (ISBN) Ahmadi, M ; Yousefi, A ; Soroudi, A ; Ehsan, M ; Sharif University of Technology
    With the increasing share of distributed generation in electrical energy supply, the proper planning procedure for using these units, has become more vital for power system planners. In this paper, the application of multi-objective optimization techniques for siting, sizing and determination of the proper technology to be used, has been investigated in such a way that, the load demand during the planning horizon is met and the technical and environmental constraints are satisfied. Unlike the traditional optimization methods used in power system optimization, NSGA-II multi-objective optimization algorithm does not consider techno-economical and environmental parameters in the constraints of... 

    Determination of optimal renewable energy growth strategies using SWOT analysis, hybrid MCDM methods, and game theory: a case study

    , Article International Journal of Energy Research ; 2021 ; 0363907X (ISSN) Almutairi, K ; Hosseini Dehshiri, J ; Hosseini Dehshiri, S ; Mostafaeipour, A ; Hoa, A. X ; Techato, K ; Sharif University of Technology
    John Wiley and Sons Ltd  2021
    Due to population growth and industrial development, Iran is facing the challenge of energy supply in various industrial, power plant, agricultural, and residential sectors. While most of Iran's energy supply comes from fossil fuels, these fuels have devastating environmental impacts. Therefore, Iran has to invest more in its renewable energy sources. Given that many locations of Iran have significant wind, solar, and geothermal potential, this study used a combination of SWOT, multicriteria decision-making approaches, and game theory to identify the best renewable energy development plans for the country. The Stepwise Weight Assessment Ratio Analysis (SWARA) technique was applied to weight...