Sharif Digital Repository

Nowadays best using of fossil fuels sources of the country (and) importance of comparison against lack of capacity in petrol production make determined the programmers and the directors to foresee and design expanded programs of the goals, to use natural gas for car fuels. To reach fulfillment of these programs, the confirmed needs of the natural gas cylinders are improved and make it essential to invest on producing compressive natural gas cylinders. In this way economical and technical change researches has been done in order to construct on department to produce 200,000 compressive natural gas cylinders in a year during two sets.(shifts) According to the results of technical researches... 

Mini-Refinery is a small refinery that would need less time, effort and expenses to build in comparison with current refineries but it would have less capacity of operation. This type of refineries could create the opportunity to refine materials in place and reduce overload pressure on main refineries. In addition, private companies would be able to build them easier, due to their low cost and since the desired capacity of their equipment would be lower than current refineries, more companies would be able to fabricate and sell them. This research has two main chapters to assess the possibility of building a Mini-Refinery, to produce 30000 barrel a day of LPG, Gasoline, Kerosene, Diesel and... 

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... 

Refer to increasing importance of logistic and influences of it on economy improvements and increasing the number of third party logistic users in all around the world and also lack of such companies in Iran, this thesis is going to discuss about feasibility study for using TPLs in automotive industry. After study and review on literature and statements of the subject and representing features of TPLs compared with other logistic companies and identifying important logistic companies, this thesis is going to identify local and over the seas companies and study them, study current rules and regulations in country and present legal defects for TPL companies. Finally it represent the technical... 

Incereasing trend of energy consumtion and limited sources of conventional energy carriers causes an increase of carrier’s price and as a result nowdays more attention is focused on unconventional energy carriers. One of these unconventional carries is flare gas, which has a high potentioal for recovery.There are different methods for flare recovery and electricity generation is one of the most economic solutions for flare gas. The purpose of this project is technical and economical investigation of electricity generation using flare gas and to study impact of important parameters on economy of design. Reciprocationg engin, gas turbine and steam turbine are chosen for investigation. Capital... 

Environmental pollution and depleting the resources of energy are two significant crises which has been caused by excessive Energy consumption in all over the world. One of the most appropriate and reproducible energies is the Biogas energy. Huge amount of sewages and dry wastes are produced in cities every day can causes devastated damages to environment. All types organic matter extracted from different processes of treating sewages are influenced by germ activities and will be transformed to mineral structures and the final product of these reactions would be gases which can be used as enormous sources of fuel and energy. There are different devices made all over the world to be utilized... 

Today, the increase in greenhouse gases and the accumulation of thesegases in the atmosphere has caused a destructive environmental impact. Transportation systems in the country consume 25 % of the energy, which isalso the main cause of air pollution in addition to the imposition of fuelconsumption and fuel imports this has led to the design and deployment of vehicles with new technologies, necessity and importance that hybridvehicles is one of the new technologies. Considering that the average speedin road traffic is low and internal combustion engines have lower efficiencyand higher emissions, the hybrid vehicle reduces the current costs (fuelconsumption) and external costs (air pollution)... 

Today, with increasing population and technological advances, the use of energy and fuel has greatly increased, and since the main source of energy supply in the world is fossil fuels, this increase plays a significant role in air pollution, climate change and the most importantly environmental degradation.One of the basic methods whose technology has developed rapidly in the last decade is the use of fuel cells to supply electricity and heat simultaneously electrochemically. In this method, which can be considered as reverse electrolysis, the chemical energy stored in fossil fuels is extracted without combustion. These systems are more efficient than other methods and produce very little... 

This research examines the produced water conditions in Iran and different ways of dealing with it; it looks forward to provide effective treatment system in order to confront the economic and environmental problems associated with the current operations and facilitate the exploitation of oil resources. Produced water in Iran have poor quality and high salinity, so the number of disposal options or use of it is very limited and non-industrial uses become non-economic and uncertain option. Seventy percent of Iranian oil reservoirs in onshore areas and reduced salinity concentration is a big challenge in produced water management. The first step in this project is finding an efficient and... 

In this thesis, the application of solar energy in the steam injection as a thermal enhanced oil recovery (TEOR) is evaluated. The motivations of this project are using a renewable energy, suitable solar potential of Iran, successful experience in the world, undeveloped heavy oilfield reservoirs in Iran. This application is investigated by three aspects which are:Reservoir Engineering aspect: the heavy oilfield are determined and then screening for selection good candidate of steam injection are done. One of the reservoirs is analyzed by simulation and optimization the steam injection to determine how much it’s production will be improved by using steam injection (contionous and cyclic)... 

Population growth require increasing demand of Energy. The fossil fuels are the main source of energy. However, they are main source of carbon dioxide emissions. Considerable amount of fossil fuels is used in the power plants. Increasing trend of electricity consumption as well as the lack of alternative fuels such as renewables in the short time will increase the consumption of fossil fuels and emissions. The most important greenhouse gas emitted from the power plants is carbon dioxide. That's why the separation of carbon dioxide from the gas stream of power plants is necessary.Separation of the carbon dioxide by adsorption is considered in this project both experimentally and... 

process design and decision-making about it are challenging activities that involve optimizing conflicting goals such as cost, technical feasibility, and environmental impacts. These conflicting goals can be analyzed by considering the complete life cycle of a process or product in the initial design and decision-making. Life cycle analysis follows the environmental effects throughout the life cycle of a product, including extraction, transportation, production, consumption, and disposal. Life cycle assessment includes four fundamental stages: goal and scope definition, inventory analysis, life cycle impact assessment, and interpretation of results. The aim of this project is to investigate...