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Integrated Green Vendor Managed Inventory Model with Truckload Transportation Mode Selection
, M.Sc. Thesis Sharif University of Technology ; Akhavan Niaki, Taghi (Supervisor)
Abstract
Nowadays, due to various reasons awareness of environment preservation has increased throughout the supply chain. So supply chain owners revise their carbon footprint. Among different methods of reducing, operational decisions (e.g. ordering quantity or transportation method) has less cost and time for observing outcomes. Our main focus is on inventory models that taking account environment considerations especially carbon emissions. Through these models, vendor-managed inventory model for reducing total cost of chain gets more attention than past. The purpose of this work is to develop a two echelon supply chain with multi-item for replacing inventory. This model includes warehouse capacity...
Location and Allocation Problem with Environmental Regulations
, M.Sc. Thesis Sharif University of Technology ; Shavandi, Hassan (Supervisor)
Abstract
In This article, we aimed to estimate impact of dual sourcing strategy on environmental implication and show how this strategy can ameliorate the emission of greenhouse gases. For this purpose, first we define comprehensive NLP models for splitting order problem with carbon emission cap and carbon emission Trade-Cap policy. Then customized sequential quadratic programming approach had been developed for solving these models. In addition, customized Genetic Algorithm validated this approach. Finally numerical results show that order splitting strategy cause to reduction in costs and emission at same time. Beside this outcome, we show the so-called Trade- Cap policy almost performs better than...
Solving a Flexible, Multi-Objective Multi-Depot VRP and IRP Considering 3DP and Sustainability with Several Levels in the Transportation Network
, M.Sc. Thesis Sharif University of Technology ; Haji, Alireza (Supervisor) ; Fatahi Valilai, Omid (Supervisor)
Abstract
A sustainable supply chain requires constant sustainable changes in the design and performance of its steps. The main characteristic of sustainability is the consideration of social, environmental and economic criteria in strategic and operational decisions. Due to the great importance of the sustainability in transportation network, proper planning and careful design for this issue in recent years has been considered and welcomed by relevant researchers. In this research we want to provide an integrated frame work for transportation network design toward sustainability. In this regard, we also use 3D printing technology as our innovation in operations. Our main issue is the Inventory...
Greenhouse gas emission measurement and economic analysis of Iran natural gas fired power plants
, Article Energy Policy ; Volume 60 , 2013 , Pages 200-207 ; 03014215 (ISSN) ; Kiyoumarsioskouei, A ; Asheri, M. H ; Naemi, S ; Shahsavari Alavije, H ; Basirat Tabrizi, H ; Sharif University of Technology
2013
Abstract
This study attempts to examine the natural gas fired power plants in Iran. The required data from natural gas fired power plants were gathered during 2008. The characteristics of thirty two gas turbine power plants and twenty steam power plants have been measured. Their emission factor values were then compared with the standards of Energy Protection Agency, Euro Union and World Bank. Emission factors of gas turbine and steam power plants show that gas turbine power plants have a better performance than steam power plants. For economic analysis, fuel consumption and environmental damages caused by the emitted pollutants are considered as cost functions; and electricity sales revenue are...
Investigating the impacts of retrofitted CNG vehicles on air pollutant emissions in Tehran
, Article International Journal of Environmental Research ; Volume 7, Issue 3 , 2013 , Pages 669-678 ; 17356865 (ISSN) ; Mansouri, N ; Morady, M. A ; Sharif University of Technology
2013
Abstract
The present study was conducted to investigate the impacts of retrofitted CNG vehicles on air pollutant emissions in Tehran over a 20 years period using available statistical data, precise automobile tests, data analysis, and LEAP Software. The obtained results revealed an increase in air pollutant emissions including CO (equal to 1030.77 thousand tons), NOx (equal to 1030.77 thousand tons), THC (269.02 thousand tons) and CO2 (equal to 38.43 thousand tons) resulting from utilizing retrofitted CNG vehicles within the studied period. Considering the obtained results, if the current trend of producing retrofitted CNG vehicles continues, a total cost of 435 million USD will impose on the...
Coupled optimization of enhanced gas recovery and carbon dioxide sequestration in natural gas reservoirs: Case study in a real gas field in the south of Iran
, Article International Journal of Greenhouse Gas Control ; Volume 17 , 2013 , Pages 515-522 ; 17505836 (ISSN) ; Jamshidi, S ; Soltanieh, M ; Sharif University of Technology
2013
Abstract
Since the beginning of industrial age the atmospheric concentration of greenhouse gases has been increased significantly due to excessive use of fossil fuels. An effective way for decreasing emission of greenhouse gases is injection of CO2 in geological formations. Moreover, from the reservoir engineering point of view, CO2 injection has been considered as a method of enhancing oil and gas recovery. While using CO2 for enhanced oil recovery (EOR) has been the subject of several studies in the past decades, enhanced gas recovery (EGR) has not been fully studied in the gas reservoirs, mainly because of high recovery factor of gas reservoirs and mixing of the reservoir gas and CO2. In this...
Post-2012 CDM multi-criteria analysis of industries in six Asian countries: Iranian case study
, Article Climate Policy ; Volume 13, Issue 2 , 2013 , Pages 210-239 ; 14693062 (ISSN) ; Abbaspour, M ; Soltanieh, M ; Atabi, F ; Rahmatian, M ; Sharif University of Technology
2013
Abstract
The prospects of the Clean Development Mechanism (CDM) and for carbon income, up to and beyond 2012, in the industrial sectors of Iran and five other Asian countries are investigated. The attractiveness and suitability of each host country, the status of their industrial sectors (based on four post-2012 scenarios), and the post-2012 potential of the CDM (or similar carbon projects) in these sectors are all examined. A multi-criteria analysis of Iran, Saudi Arabia, the UAE, Qatar, China, and India, based on seven sets of criteria (institutional, regulatory, economic, political, social, CDM experience, and energy production/consumption), is conducted, and the post-2012 potential carbon incomes...
What is energy efficiency and emission reduction potential in the Iranian petrochemical industry?
, Article International Journal of Greenhouse Gas Control ; Volume 12 , 2013 , Pages 460-471 ; 17505836 (ISSN) ; Soltanieh, M ; Abbaspour, M ; Atabi, F ; Sharif University of Technology
2013
Abstract
In this study, the prospects of energy efficiency potential, clean development mechanism (CDM) and carbon income up to and beyond 2012 are investigated in the petrochemical industries of Iran as a major oil-producing country. This paper is to address four questions of: (1) the GHGs emission in Iranian petrochemical complexes, (2) the most energy-consuming processes, (3) units with the highest energy efficiency potentials and (4) potentials of CDM or similar carbon projects based on post-2012 scenarios. The petrochemical processes are investigated in two categories of non-polymeric and polymeric productions. Based on capital expenditure, economic saving, simple payback period, CO2 equivalent...
Development of a zero emission integrated system for co-production of electricity and methanol through renewable hydrogen and CO 2 capture
, Article International Journal of Greenhouse Gas Control ; Volume 7 , 2012 , Pages 145-152 ; 17505836 (ISSN) ; Azar, K. M ; Saber, M ; Sharif University of Technology
Abstract
In order to decrease CO 2 emission into the atmosphere and develop renewable energy sources for carbon capture, an integrated system is considered for co-production of electricity and methanol. In this research, methanol synthesis unit through captured CO 2 from fossil fuel power plant and produced H 2 from water electrolysis unit by wind renewable energy is developed. An oxy-fuel combustion carbon capture method is considered in large scale Matiant power plant based on utilization of oxygen from water electrolysis unit. Technical and economical analysis of the proposed system shows that when the price of natural gas is 7.8US$/GJ, the total CO 2 avoided cost is 93US$/(tonne of CO 2) and...
Optimal deployment of renewable electricity technologies in Iran and implications for emissions reductions
, Article Energy ; Volume 91 , 2015 , Pages 882-893 ; 03605442 (ISSN) ; Shafiei, E ; Sharif University of Technology
Elsevier Ltd
2015
Abstract
In this paper, special focus is paid to the long-term adoption of renewable electricity technologies and their implications for emissions reductions in Iran. MESSAGE, as a bottom-up energy supply optimization model, is used to assess the lowest-cost technology options. The potential impacts of transitioning to a renewable electricity supply are quantified, and the investment requirement to achieve a low-carbon generation mix is estimated. Alternative scenarios are defined to evaluate the impact of fossil fuel prices, the carbon tax and government incentives on the utilization of renewable resources, national renewable targets, and emissions reductions. The prioritization of non-hydro...
Evaluating one of renewable electricity generation technologies: PEM fuel cells
, Article EPEC 2010 - IEEE Electrical Power and Energy Conference: "Sustainable Energy for an Intelligent Grid", 25 August 2010 through 27 August 2010, Halifax, NS ; 2010 ; 9781424481880 (ISBN) ; Sadeghzadeh, S. M ; Fathi, A. H ; Nasiri, M ; Sharif University of Technology
2010
Abstract
Proton Exchange Membrane (PEM) Fuel Cells are attracting most of the electricity consumers because of high efficiency, zero carbon emissions and high reliability. There are many parameters influencing on this power source's operation. A model of PEM fuel cell will be presented and the sensitivity of the fuel cell's parameters will be analyzed. Multi Parameters Sensitivity Analysis is used next to examine the relative importance of the influential parameters on the PEM fuel cell operation
Investigation of oil recovery and CO2 storage during secondary and tertiary injection of carbonated water in an Iranian carbonate oil reservoir
, Article Journal of Petroleum Science and Engineering ; Volume 137 , 2016 , Pages 134-143 ; 09204105 (ISSN) ; Ayatollahi, S ; Riazi, M ; Sharif University of Technology
Elsevier
Abstract
Gas injection process for more oil recovery and in particular CO2 injection is well-established method to increment oil recovery from underground oil reservoirs. CO2 sequestration which takes place during this enhanced oil recovery (EOR) method has positive impact on reducing the greenhouse gas emission which causes global warming. Direct gas injection into depleted oil reservoirs, encounters several shortcomings such as low volumetric sweep efficiency, early breakthrough (BT) and high risk of gas leakage in naturally fractured carbonate oil reservoirs. Carbonated water injection (CWI) has been recently proposed as an alternative method to alleviate the problems associated with gas...
Fair profit contract for a carrier collaboration framework in a green hub network under soft time-windows: Dual lexicographic max-min approach
, Article Transportation Research Part E: Logistics and Transportation Review ; Volume 91 , 2016 , Pages 129-151 ; 13665545 (ISSN) ; AkhavanNiaki, S. T ; Sharif University of Technology
Elsevier Ltd
2016
Abstract
This paper models a novel and practical bi-objective hub-location problem under a centralized carrier collaboration framework between one holding company and multiple carriers. The holding company first establishes a hub-and-spoke network in order to locate p hubs and to assign the center nodes to the located hubs. Then, it allocates the transportation routes of the hub network to the carriers. In contrast, the carriers should select an appropriate vehicle type to serve the transportation requests in a green hub network. The carriers are also able to meet the transportation requests within a certain time-window based on a soft time-window mechanism. Moreover, aiming to emphasize green...
Techno-economic and environmental analysis of an integrated standalone hybrid solar hydrogen system to supply CCHP loads of a greenhouse in Iran
, Article International Journal of Green Energy ; Volume 14, Issue 3 , 2017 , Pages 295-309 ; 15435075 (ISSN) ; Roshandel, R ; Hamidi, A. A ; Sharif University of Technology
Abstract
The techno-economic and environmental performance of hybrid solar hydrogen energy systems was investigated to provide combined cooling, heating and power (CCHP) demands of a standalone greenhouse in Iran to achieve sustainable agriculture based on an optimization procedure. From the environmental point of view, by deploying hybrid energy systems, 83%, to 100% of emissions can be avoided. Also a sensitivity analysis was performed on the hybrid energy systems in order to study the effect of major parameter variation on the systems justification. It was concluded that hybrid solar systems are economically competitive with conventional systems, for high solar intensity locations with high diesel...
Sizing and performance analysis of standalone hybrid photovoltaic/battery/hydrogen storage technology power generation systems based on the energy hub concept
, Article International Journal of Green Energy ; Volume 14, Issue 2 , 2017 , Pages 121-134 ; 15435075 (ISSN) ; Roshandel, R ; Hamidi, A. A ; Sharif University of Technology
Taylor and Francis Inc
2017
Abstract
In this study, the optimal sizing and performance analysis of a standalone integrated solar power system equipped with different storage scenarios to supply the power demand of a household is presented. One of the main purposes when applying solar energy resource is to face the increasing environmental pollutions resulting from fossil fuel based electricity sector. To this end, and to compare and examine two energy storage technologies (battery and hydrogen storage technology), three storage scenarios including battery only, hydrogen storage technology only and hybrid storage options are evaluated. An optimization framework based on Energy Hub concept is used to determine the optimum sizes...
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) ; Aryanpur, V ; Sharif University of Technology
Elsevier Ltd
2018
Abstract
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...
A closed-loop supply chain considering carbon reduction, quality improvement effort, and return policy under two remanufacturing scenarios
, Article Journal of Cleaner Production ; Volume 232 , 2019 , Pages 1230-1250 ; 09596526 (ISSN) ; Alizadeh Basban, N ; Akhavan Niaki, S. T ; Sharif University of Technology
Elsevier Ltd
2019
Abstract
In today's competitive supply chains, providing products which can stimulate the customer's demand and enhance the revenues of companies is an important objective. Therefore, three stimulating factors, including the carbon emission reduction, return policy and quality improvement efforts are taken into consideration in a supply chain (SC). In line with reducing carbon emission, two possibilities in the forward flow, including the technologies investment and the trade and cap are employed. In the reverse flow, hybrid remanufacturing of the imperfect quality products under technology license is investigated. The impacts of collecting-remanufacturing processes on carbon reduction, quality...
Economic and environmental assessment of a solar-assisted ground source heat pump system in a heating-dominated climate
, Article International Journal of Environmental Science and Technology ; Volume 16, Issue 7 , 2019 , Pages 3091-3098 ; 17351472 (ISSN) ; Saidi, M. H ; Abbaspour, M ; Sharif University of Technology
Center for Environmental and Energy Research and Studies
2019
Abstract
In recent years, increasing attention has been paid to the use of renewable energy sources in building sector. The ground source heat pumps are a promising alternative for heating and cooling applications. Despite the high coefficients of performance and significant environmental benefits, their performance may deteriorate over the long-term operation if the annual ground loads are not well balanced. An appropriate solution is the use of hybrid ground source heat pump system through which some portion of the thermal loads can be offset by supplemental components. The aim of this study is to assess the feasibility of a solar-assisted ground source heat pump system for heating a detached house...
Toward sustainable optimization with stackelberg game between green product family and downstream supply chain
, Article Sustainable Production and Consumption ; Volume 23 , 2020 , Pages 198-211 ; Shirazi, B ; Mahdavi, I ; Mahdavi Amiri, N ; Sharif University of Technology
Elsevier B.V
2020
Abstract
Green products are increasingly considered by companies, owing to the significant attention of government regulations, customers’ requests and competitors. Here, we deal with Green Product Families (GPFs) by selecting green components, modules and products which are produced based on the assembling to order (ATO) approach to cover diverse customer needs. Designing a GPFs is important but not sufficient for sustainable optimization. In fact, we need to simultaneously consider the supply chain of a GPF to control the pollution generated in the downstream supply chain. For a sustainable optimization approach, this joint configuration is usually structured based on economic, environmental and...
Strategies for utilizing alternative fuels by Iranian passenger cars
, Article International Journal of Environmental Science and Technology ; Volume 3, Issue 1 , 2006 , Pages 59-68 ; 17351472 (ISSN) ; Vaziri, M ; Azadani, A. N ; Sharif University of Technology
CEERS
2006
Abstract
The current paper is an attempt to find a sustainable fuel strategy for passenger cars in Iran. Currently, most of Iran's passenger cars consume gasoline, a non-renewable fossil fuel. This fuel has well-known environmental impacts, including various kinds of pollutions, as well as the threat of quick running out. These general negative characteristics of gasoline are amplified by the high consumption rate of Iran's transportation sector, (e.g. about three times more than that of UK). The objective of this paper is firstly selecting possible alternative fuels for Iran's transportation sector, and then proposing the percent of cars consuming these alternative fuels (along with gasoline). The...