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energy-system
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A comprehensive energy supply model in an office building based on the reference energy system
, Article International Journal of Sustainable Energy ; Nov , 2013 ; 14786451 (ISSN) ; Rasekhi, H ; Fathi, A ; Sharif University of Technology
2013
Abstract
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....
Thermoeconomic analysis and multi-objective optimization of an integrated solar system for hydrogen production using particle swarm optimization algorithm
, Article Journal of Thermal Engineering ; Volume 7, Issue 4 , 2021 , Pages 746-760 ; 21487847 (ISSN) ; Assareh, E ; Moltames, R ; Taghipour, A ; Barati, H ; Sharif University of Technology
Yildiz Technical University
2021
Abstract
This study aims to investigate the hydrogen production process using an integrated system based on solar energy. This system includes an evacuated tube collector to absorb solar energy as input energy of the system. A parametric analysis was conducted to determine the most important design parameters and evaluate these parameters' impact on the system's objective functions. For identifying the optimum system conditions, multi-objective optimization was performed using particle swarm optimization (PSO) algorithm. The results obtained from the parametric analysis show that an increment in the collector mass flow rate and the turbine inlet temperature, as well as a decrement in the collector...
Model for Evaluation of Integration of Biomass Systems and Energy Service
, M.Sc. Thesis Sharif University of Technology ; Saboohi, Yadollah (Supervisor) ; Avami, Akram (Supervisor)
Abstract
With regards to depleting of fossil energy sources and the country increasing need to energy, some efforts had been done to replacing renewable sources. To do this, due to decreasing greenhouse gasses, increasing the energy the protection sources, rural development and stable fuel supply in future, the biomass sources are take into consideration but one of considered problems of these sources is high cost and lack of infrastructures. Iran is among the countries that its fossil sources are coming to end and also has high potential of biomass sources. This research aim is developing of a model for evaluation of biomass utilization system to finding a path for supplying biomass energy and...
Environmental responsibility accounting in complex energy systems
, Article Journal of Cleaner Production ; Volume 166 , 2017 , Pages 998-1009 ; 09596526 (ISSN) ; Saboohi, Y ; Tsatsaronis, G ; Sharif University of Technology
Abstract
Environmental considerations have imposed new restrictions in the planning and management of energy systems. This research aims at describing the necessity and application of a new concept in environmental responsibility accounting. The method is based on physical quantities to overcome the weaknesses of already developed allocation approaches, and to internalize the external environmental damages using the exergy concept. The proposed method is a modification of the exergoenvironmental analysis in order to take into account the effect of non-energy streams in a macro-level energy system. In the proposed method, environmental responsibilities are to be calculated based on the exergy...
Assessment of Greenhouse Gas Mitigation Potential from Energy System
, M.Sc. Thesis Sharif University of Technology ; Soltanieh, Mohammad (Supervisor) ; Saboohi, Yadollah (Supervisor)
Abstract
Globally energy system is the main source of green house gas emission. 60-90 percent of manmade CO2 is due to energy sector. Pollutants like NOx, CO, Non Methane Hydrocarbons which may cause indirect effect on climate system are mainly emitting from energy sector. Gas, Oil and Coal extraction and transmission are responsible for more than 15% of Methane emission globally. Therefore it is important to consider all types of GHGs emission as well as all sectors of energy system to assess the GHGs mitigation potential throughout the energy system. Considering the significance of energy sector in GHGs emission, in this study we developed an optimized model for Iran’s energy sector in which we ran...
Model of Sustainable Development of Energy System for Hamedan Provincce
, M.Sc. Thesis Sharif University of Technology ; Saboohi, Yadollah (Supervisor)
Abstract
Energy is a production factor and its availability and accessibility contributes to the improvement of the social welfare. Sustainable supply of energy is a prerequisite to the social and economical development. Over-exploitation of exhaustible energy resources along with the destruction caused by human activities has caused the environmental degradation. Therefore sustainable economic growth and improvement of the social welfare depend upon efficient supply of energy which ought to be compatible with the environment. Sustainable development is a concept which depicts a compromise between three aspects of development which are economical, social and environmental compatibility.
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Demand side management for a residential customer in multi-energy systems
, Article Sustainable Cities and Society ; Volume 22 , 2016 , Pages 63-77 ; 22106707 (ISSN) ; Rayati, M ; Ranjbar, A. M ; Sharif University of Technology
Abstract
Today, as a consequence of the growing installation of efficient technologies, e.g. micro-combined heat and power (micro-CHP), the integration of traditionally separated electricity and natural gas networks has been attracting attentions from researchers in both academia and industry. To model the interaction among electricity and natural gas networks in distribution systems, this paper models a residential customer in a multi-energy system (MES). In this paper, we propose a fully automated energy management system (EMS) based on a reinforcement learning (RL) algorithm to motivate residential customers for participating in demand side management (DSM) programs and reducing the peak load in...
A computationally efficient Li-ion electrochemical battery model for long-term analysis of stand-alone renewable energy systems
, Article Journal of Energy Storage ; Volume 17 , 2018 , Pages 93-101 ; 2352152X (ISSN) ; Dufo Lopez, R ; Roshandel, R ; Golzar, F ; Bernal Agustin, J. L ; Sharif University of Technology
Elsevier Ltd
2018
Abstract
In this paper we introduce a Simplified Single Particle Model (SSPM), which is obtained from the general mathematical formulation of Li-ion batteries. The model is validated by using different commercial graphite/LiFePO4 cells, and results show agreement with more complicated models and experimental data for low operating currents of less than 1C. A maximum relative error of less than 2% can be observed to estimate cell voltage in the plateau region of the charge/discharge curves. Therefore, the proposed model is suitable in the case of stand-alone renewable energy systems, where battery current is typically lower than C/10. By increasing the current, the SSPM deviates from more accurate...
Utilization of hybrid nanofluids in solar energy applications: A review
, Article Nano-Structures and Nano-Objects ; Volume 20 , 2019 ; 2352507X (ISSN) ; Ghazvini, M ; Sadeghzadeh, M ; Alhuyi Nazari, M ; Ghalandari, M ; Sharif University of Technology
Elsevier B.V
2019
Abstract
Hybrid nanofluids have several advantages compared with the conventional types due to their modified properties. Their enhanced thermophysical and rheological properties make them more appropriate for solar energy systems. In this review paper, an overview of solar energy systems is represented, and afterwards, applications of hybrid nanofluids in various solar technologies, especially solar thermal, are reviewed. Comparison between the nanofluidic systems, and the conventional ones is performed in order to gain a deeper insight into the advantages of using nanofluids. According to the results of the reviewed studies, the most important reason for performance enhancement of nanofluidic solar...
Development of the Energy System's Resiliency Model (Case Study:Iran)
, Ph.D. Dissertation Sharif University of Technology ; Saboohi, Yadoola (Supervisor) ; Vakili, Ali (Co-Supervisor)
Abstract
The high reliability of energy supply and the compatibility of the energy sector with the environment are essential factors in the process of the economic reconstruction and the sustainable development of countries. Thus, most of our activities, well-functioning of modern societies, and the growth of economies (such as the gross domestic product (GDP) of countries) depend on a reliable and efficient supply of energy. In today’s global and increasingly dynamic and turbulent environments, energy systems and supply energy are challenged with numerous disruptive events which threaten to disrupt the activities and performance of energy systems. There is a bilateral relation between energy sector...
Optimal charge scheduling of PHEV in a multi-carrier energy home
, Article 2014 14th International Conference on Environment and Electrical Engineering, EEEIC 2014 - Conference Proceedings ; 2014 , p. 199-203 ; ISBN: 9781480000000 ; Fotuhi-Firuzabad, M ; Sharif University of Technology
Abstract
The presence of different energy carriers as well as the advent of new multi-generation technologies such as combined heat and power (CHP) at homes necessitates designing an integrated model for optimal operation of such multi-carrier energy home. A residential energy hub model including a CHP and a Plug-in hybrid electric vehicle (PHEV) is presented in this paper to show the multi-carrier energy system operation. In addition, this paper proposes an optimization-based formulation for PHEV charging control in the residential energy hub. The payment cost is minimized for the charge scheduling of PHEV through optimization of the residential energy hub operation in response to the...
Probabilistic energy flow analysis of multi-carrier energy system in the presence of energy DR programs
, Article 2019 Smart Gird Conference, SGC 2019, 18 December 2019 through 19 December 2019 ; 2019 ; 9781728158945 (ISBN) ; Fotuhi Firuzabad, M ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2019
Abstract
In recent years, a great deal of attention has been paid to multi-energy systems that improve energy efficiency and reliability. In this respect, this paper examines the issue of energy flow of these systems in a probabilistic context in the presence of energy responsive programs. Responsive energy programs are provided by system operator of multi-carrier energy to manage these networks where energy customers can participate in it. The probabilistic method used is 2m + 1 point estimation method, which has high speed and high accuracy. The presented numerical results show the impact of each responsive energy program on the cost of operating a multi-carrier system. © 2019 IEEE
The energy hub: An extensive survey on the state-of-the-art
, Article Applied Thermal Engineering ; Volume 161 , 2019 ; 13594311 (ISSN) ; Rashidinejad, M ; Moeini Aghtaie, M ; Abdollahi, A ; Sharif University of Technology
Elsevier Ltd
2019
Abstract
Today's world energy-related challenges, ranging from anthropogenic climate change to continuous growth of demand for different energy forms, have enforced planners of energy systems (ESs) to concentrate on more optimal and eco-friendly operation and/or expansion planning methodologies. In this context, increased interdependencies of gas, heat and electricity ESs have recently encouraged the planners to design operation and/or expiation strategies in an integrated manner in favor of a new concept, the so-called “Energy Hub” (EH). Although this concept has been employed so far in a multitude of studies, but its real nature, advantages, difficulties, importance or inevitability aspect, and...
Energy system improvement planning under drought condition based on a two-stage optimization model: The desire for sustainability through the promoting of system's resilience
, Article Energy Reports ; Volume 7 , 2021 , Pages 3556-3569 ; 23524847 (ISSN) ; Saboohi, Y ; Tsatsaronis, G ; Vakili, A ; Sharif University of Technology
Elsevier Ltd
2021
Abstract
Energy is one of the most important social and economic infrastructures and human life is strongly depends on it. In recent years, the occurrence of natural disasters such as drought as a high-impact low-probability event is undeniable. So, energy planning in the disruption situation is necessary in order to anticipate and maintain the performance of the energy system in optimal condition. This paper focuses on developing a hybrid long-term framework for evaluating the energy system resilience based on sustainability concept against drought. The model bridges the gap between long-term energy system planning in macro level and short-term switching operations or micro level modeling approach...
Frameworks, quantitative indicators, characters, and modeling approaches to analysis of energy system resilience: A review
, Article Renewable and Sustainable Energy Reviews ; Volume 144 , 2021 ; 13640321 (ISSN) ; Saboohi, Y ; Vakili, A ; Sharif University of Technology
Elsevier Ltd
2021
Abstract
The rise of the damage to energy systems caused by both natural and man-made disruptive events and the connection between energy systems and socio-economic systems have motivated the study of energy system resilience. This paper conceptualizes and comprehensively presents a systematic review of the recent literature focused on the analytical, technical, and mathematical points from the standpoint of the energy systems facing disruptive events. To this end, five phases are developed. Firstly, the concept of the energy system resilience is presented, and then the energy resilience characters and the resilience states are introduced and connected. Thirdly, the formulation and indicators of the...
Energy system improvement planning under drought condition based on a two-stage optimization model: The desire for sustainability through the promoting of system's resilience
, Article Energy Reports ; Volume 7 , 2021 , Pages 3556-3569 ; 23524847 (ISSN) ; Saboohi, Y ; Tsatsaronis, G ; Vakili, A ; Sharif University of Technology
Elsevier Ltd
2021
Abstract
Energy is one of the most important social and economic infrastructures and human life is strongly depends on it. In recent years, the occurrence of natural disasters such as drought as a high-impact low-probability event is undeniable. So, energy planning in the disruption situation is necessary in order to anticipate and maintain the performance of the energy system in optimal condition. This paper focuses on developing a hybrid long-term framework for evaluating the energy system resilience based on sustainability concept against drought. The model bridges the gap between long-term energy system planning in macro level and short-term switching operations or micro level modeling approach...
Frameworks, quantitative indicators, characters, and modeling approaches to analysis of energy system resilience: A review
, Article Renewable and Sustainable Energy Reviews ; Volume 144 , 2021 ; 13640321 (ISSN) ; Saboohi, Y ; Vakili, A ; Sharif University of Technology
Elsevier Ltd
2021
Abstract
The rise of the damage to energy systems caused by both natural and man-made disruptive events and the connection between energy systems and socio-economic systems have motivated the study of energy system resilience. This paper conceptualizes and comprehensively presents a systematic review of the recent literature focused on the analytical, technical, and mathematical points from the standpoint of the energy systems facing disruptive events. To this end, five phases are developed. Firstly, the concept of the energy system resilience is presented, and then the energy resilience characters and the resilience states are introduced and connected. Thirdly, the formulation and indicators of the...
Developing an innovating optimization framework for enhancing the long-term energy system resilience against climate change disruptive events
, Article Energy Strategy Reviews ; Volume 40 , 2022 ; 2211467X (ISSN) ; Fakehi Khorasani, A. H ; Vakili, A ; Saboohi, Y ; Tsatsaronis, G ; Sharif University of Technology
Elsevier Ltd
2022
Abstract
The energy system is one of the major sub-sectors of the economy in every society in which both supply with high reliability and compatibility of the energy sector with the environment is a necessity in the process of economic reconstruction and sustainable development. The energy system has been more susceptible to various disruptive events in recent years. Thus, designing a resilient energy system capable of resisting and recovering rapidly from high-impact low-probability (HILP) disruptive events is essential. This paper focuses on developing a two-stage long-term optimization framework for evaluating the energy system resilience as a crucial Critical Infrastructure (CI) system against...
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 ; Saboohi, Yadollah (Supervisor)
Abstract
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...
Optimization of Hybrid Solar-Biomass based CCHP (Combined Cooling, Heating, and Power)Cycles
, M.Sc. Thesis Sharif University of Technology ; Avami, Akram (Supervisor) ; Broushaki, Mehrdad (Supervisor)
Abstract
Solar power is a clean energy resource which has been known as an important renewable energy source; however, due to the high cost of installation and the need for energy storage systems in the absence of sunlight at night, it has not been used on a large scale till now. Using the combination of solar energy and biomass energy from agriculture and urban waste in a power plant may be regarded as a commercial option due to the removal of individual solar power energy storage costs. In this study, a hybrid solar-biomass power plant will be studied. Linear Fresnelin and parabolic through technologies in the solar section and combustion and gasification technologies were used in the biomass...