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Qatar Foundation Annual Research Forum Volume 2011 Issue 1
- Conference date: 20-22 Nov 2011
- Location: Qatar National Convention Center (QNCC), Doha, Qatar
- Volume number: 2011
- Published: 20 November 2011
221 - 240 of 281 results
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A New Control Strategy for Air/Fuel Regulation of Spark Ignition Engines to Maximize Energy Economy and Minimize Environment Pollution
Abstract The gasoline for cars and light trucks accounts for more than 40% of the total oil consumption worldwide. More important is the environment subjected to the pollution emitted by spark ignition engine's tailpipe. Spark ignition engines are commonly equipped with electronic control systems whose task is to provide desired air-fuel ratio (AFR) signal tracking to improve fuel energy economy and reduce exhaust Read More
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An Improved Photovoltaic Power Generation System with Quasi-Z-Source Inverter and Battery Storage
Authors: Yushan Liu, Baoming Ge and Haitham Abu-RubAbstract I. Introduction Photovoltaic (PV) energy generation has been one of the most active research areas in the past decades, because it is essentially inexhaustible and environmental friendly with respect to the conventional energy sources. However, nowadays the higher initial installation cost, lower efficiency and reliability of the PV system still block its widespread application. To overcome these problems, our Read More
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Lipids Profiles of Free Fatty Acids from Olive Oil Triglycerides - The Development of a New Method for Profiling Lipids from Photosynthetic Micro-organisms, a Potential Candidate for the Production of Biofuel
Authors: Shana Sunny Jacob and Amira Al-JabiryAbstract Currently intensive global research efforts are being made to increase and modify the accumulation of lipids, alcohols, hydrocarbons, polysaccharides, and other energy storage compounds in photosynthetic organisms, such as yeast, and bacteria. Qatar is in a unique position in the world because it has a rich biodiversity of photosynthetic micro-organisms and the climate and space to lead the world in the research a Read More
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Characterization of Synthetic Gas-to-Liquid Jet Fuel Blends and Properties Correlation with Hydrocarbon Groups
Authors: Nimir Elbashir, Bilal Raza, Elfatih Elmalik, Haider Ramadhan, Dhabia Al-Mohandi and Mariam Al-MeerAbstract This paper highlights the recent work carried out at Texas A&M University at Qatar (TAMUQ) in the development of novel synthetic fuels geared towards the aviation industry's utilization. The research activities implemented involve a unique multi-disciplinary collaboration between academia and industry, which was facilitated by QF through funding provided by the Qatar Science and Technology Park (QSTP) and Roll Read More
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Fischer-Tropsch Synthesis Over Co/Al2O3 Catalyst-Effect of Pretreatment Procedures
Authors: Dragomir Bukur, Zhendong Pan and Matin ParvariAbstract Due to high activity of cobalt metal in syngas conversion to higher hydrocarbons and long chain normal paraffins, supported cobalt catalysts have been widely used for Fischer-Tropsch synthesis (FTS) reaction. We investigated effect of pretreatment procedures on catalytic performance of 15wt% Co/Al2O3 catalyst prepared by incipient wetness impregnation (IWI). Catalyst was characterized by different met Read More
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Phase Equilibrium and Calorimetric Properties of Mixtures Using the Mattedi-Tavares-Castier Equation of State
Abstract Natural gas and oil processing, among many other applications in the chemical industry, depends on accurate predictions of the thermodynamic and transport properties for their accurate and reliable design. Especially in the energy sector, in which the flow rates of process streams are large and equipment is big, improper design can be costly, both in terms of investment and operating costs. Equations of st Read More
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Complex Flow and Composition Path in CO2 Injection Schemes from Density Effects
Authors: Hadi Nasrabadi, Tausif Ahmed and Abbas FiroozabadiAbstract CO2 injection has been used to improve oil recovery for the last four decades. In recent years, CO2 injection has become more attractive because of the dual effect; injection in the subsurface 1) allows reduction of CO2concentration in the atmosphere to reduce global warming, and 2) improves the oil recovery. One of the screening criteria for CO2 injection as an enhanced oil recovery method is based on measurement Read More
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Optimal Waste Heat Recovery and Reuse in Industrial Zones
Authors: Mirko Stijepovic and Patrick LinkeAbstract Many developed and developing economies are seeking to mitigate future climate change risks by developing strategies to reduce carbon emissions and the use of fossil fuels. Industrial energy use efficiency can be significantly enhanced by better energy recovery and integration promises significant potential to reduce emissions at low cost. These approaches are seen as crucial enablers of sustainable solutions in Read More
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Heat Transfer Measurements of Supercritical Carbon Dioxide in a Horizontal Circular Straight Tube
Authors: Katsuyoshi Tanimizu, Mohammed A Mohamed, Reza Sadr and Devesh RanjanAbstract Supercritical fluids have been drawing attention to many researchers as heat transfer media for power plant cycles, for refrigeration and heat pump applications. The exceptional heat transfer characteristics of supercritical fluids are key parameters for those applications. Above critical pressure, especially, in pseudocritical region, small temperature and pressure variations can lead to significant changes in the th Read More
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Smart Production Metering Field Pilot: the Benefits from a Virtual Approach
Authors: Adrien Tessier, Mohamed Haouche, Younes Deffous and Jean-Francois AuthierAbstract To face new hydrocarbon production metering systems and back allocation challenges, Total E&P Qatar and its Research Center (TRC-Q), located in the Qatar Science and Technology Park (QSTP), test novel approaches to improve current production metering system in the Al-Khalij field. This field is operated under a Production Sharing Agreement (PSA) with Qatar Petroleum (QP). A field pilot, which involves three pl Read More
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Unlocking the Potential of Carbonate Reservoirs through Petroleum Geochemistry and Acid Stimulation
Authors: Pascal Cheneviere, Mohammed Al Sammarraie, Hend Hassan and Ercin MaslenAbstract Approximately 50% of world's hydrocarbon resources lay in carbonate reservoirs. The main challenges involved in producing them are their natural complexity and strong geological heterogeneities. To help reducing these uncertainties, Total Research Center in Qatar (TRC-Q), as QSTP member, conducts research around two important activities, namely, acid stimulation and petroleum geochemistry. Acid Stimulati Read More
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Thermodynamic and Economic Assessment of Integrated Desalination and Power Generation
Authors: Tahira Newaz and Patrick LinkeAbstract There have been a number of studies regarding the efficiency of state-of-the-art thermal (Multi-Effect Distillation, MED), power driven (sea water reverse osmosis, SWRO) and hybrid (MED/SWRO) desalination systems. The comparisons between desalination technologies can be made on a number of critical parameters such as (i) cost of produced water, (ii) energy efficiency, (iii) environmental impact, (iv) reliability and (v) Read More
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The Impact of Qatar's Investment and Fiscal Policies on its Gas and LNG Success
More LessAbstract 1. Introduction: Qatar currently produces 77 mtpa of Liquefied Natural Gas (LNG), which dwarfs the 24 mtpa production of 2nd placed Indonesia. Production started as recently as 1997, compared to the several decades that other LNG producers have been in operation. This paper will review the key policy factors that have been responsible for Qatar's success story including leadership vision, efficient utilization of In Read More
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Innovative Solutions for Sulphur in Qatar
More LessAbstract The estimated sulphur output from Qatar is around 4 Mtpa by 2012, primarily from gas processing operations(Sulphur magazine, March/April 2009). Shell is using novel technologies to utilize sulphur in various applications such as concrete (Shell Thiocrete*), asphalt (Shell Thiopave*) and fertilizers (Shell Thiogro*). The sulphur utilization programme in Qatar Shell Research and Technology Centre is part of a Read More
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Wave Propagation in a Three-Dimensional, Fully-Nonlinear Numerical Wave Tank Based on Multi-transmitting Formula Coupled Damping Zone Method
Authors: Gang Xu, Abdelmagid Salem Hamouda and Boo Cheong KhooAbstract The objective of this work is to develop a novel numerical model solving the coupled internal sloshing and external sea-keeping interaction for small/medium liquefied natural gas (LNG) carrier. Currently, the work focuses on simulating wave propagation in a three-dimensional (3D) fully-nonlinear numerical wave tank (NWT) to model the sea. When simulating the nonlinear wave propagation through an unbounded domai Read More
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Measuring Corrosion with Laser-Ultrasound: Time-Frequency Analysis of Rayleigh Wave Propagation
Authors: Maqbool Ahmed and Uvais QidwaiAbstract Background: Laser - Ultrasound is a new non-contact technique used to detect the defects in the hot surfaces like hot billets etc. Determination of corrosion in the plates, using this non-contact technique seemed a promising research effort. Objectives: In this work, an inspection system has been presented that uses Laser-Ultrasound (LU) technique for Nondestructive testing (NDT) of metallic structures Read More
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Special Characteristics of Ingot Castings and Extrusion Ingots Produced at the Qatalum Aluminum Production Site
Abstract The quality of raw materials used for primary aluminium production vary depending on the location they originate from. Consequently, the level of trace elements found in the raw materials varies from location to location and so does the chemistry of the final product. While the effect of trace elements is difficult to quantify, they may have a significant impact on both process ability and the properties of the final produc Read More
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Reliability Modeling for Degrading System with multiple Dependent Failure Modes
Authors: Abdel Magid Hamouda, Khalifa Al-Khalifa, Elsayed Elsayed, Liu Xiao and David CoitAbstract To adequately predict reliability and optimize the time-to-maintenance for complex system design and reliability problems, this research develops a new model for complex systems, which are subject to performance degradation and multiple dependent failure modes. In particular, the hazard rate corresponding to each failure mode depends both on time and system state. The system state stochastically degrades o Read More
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Hidden Hazards of Applying Photo Voltaic Modules in Hydrocarbon Industry
Authors: Anbu Vendan D. Pandian, Pooja Agarwala, Kamal Bansal and B.S. Sundar DanielAbstract Background: Solar Photo Voltaic (PV) module based electric power supply systems are being designed for remote unmanned oil and gas facilities where grid utility power is not available within vicinity. PV modules are used in applications such as measurement of process data, telemetry, gas detection, cathodic protection and lighting with voltage levels of 12V, 24V and 48V. Majority of PV modules are made of c Read More
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Kinetics of the Fischer-Tropsch Reaction Over Alumina Supported Cobalt Catalyst in a Slurry Reactor
Authors: Karim Ibrik, Tejas Bhatelia, Dragomir Bukur, Wenping Ma, Burtron Davis and Gary JacobsAbstract Depleting oil reserves, environmental pressure, as well as abundant reserves of coal, natural gas and biomass, have all contributed to a revived interest in Fischer-Tropsch (F-T) technology for producing ultra-clean, virtually sulfurfree, transportation fuels and chemicals. F-T technology involves conversion of synthesis gas (i.e., a mixture of H2 and CO) to a wide spectrum of hydrocarbons. In this study, the kinetics of the Read More
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