- Home
- Conference Proceedings
- Qatar Foundation Annual Research Forum Proceedings
- Conference Proceeding
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
201 - 220 of 281 results
-
-
Investigation of Synthetic Paraffinic Kerosene Compositions on Aviation Turbine Altitude Ignition and Combustion Performance
Authors: Thomas Mosbach, Gregor C. Gebel, Patrick Le Clercq, Reza Sadr, Kumaran Kannaiyan and Ali Al-SharshaniAbstract The interest in using alternative fuels in commercial aviation has substantially grown, as it is anticipated to be the principal means of mitigating rising fuel costs, fuel supply security, and environmental impact of aviation. Synthetic paraffinic kerosenes (SPKs), such as gas-to-liquid (GTL) derived from the Fischer- Tropsch route using natural gas, have been approved by the ASTM International committee for use as su Read More
-
-
-
Use of Surrogate Bends to Explore Performance-Composition Links for Synthetic Paraffinic Kerosines
Authors: Ali Alsharshani, Joanna Bauldreay and Paul BogersAbstract Fischer-Tropsch synthetic paraffinic kerosines (FT-SPKs), such as Gas-to- Liquids (GTL) Kerosine, are now accepted as suitable blend components for Jet fuel production, via ASTM D7566. This sets limitations on distillation profiles for the final fuel and neat SPK, and the cycloparaffin content of the neat SPK. SPKs, from FT and other production routes, can be envisaged that would fall outside these limits yet produce p Read More
-
-
-
On the Conceptual Design of Integrated National Renewable Energy and Water Desalination Infrastructure Systems
Authors: Wajih Idriss, Patrick Linke and Hamad Al-ThaniAbstract The Qatar National Food Security Programme (QNFSP) is an initiative by the Heir Apparent of the State of Qatar, HH Sheikh Tamim bin Hamad Al-Thani, with the broad remit of developing a sustainable solution to the Nation's current food insecurity due to almost complete dependency on food imports. QNFSP develops a comprehensive solution that covers multiple dimensions from policies and regulations t Read More
-
-
-
Kinetic Models for Fischer-Tropsch Synthesis over a Ru-Promoted Co/Al2O3 Catalyst in a Slurry Reactor
Authors: Tejas Bhatelia, Bransislav Todic, Dragomir Bukur, Wenping Ma, Burtron Davis and Gary JacobsAbstract Increasing oil prices, strict environmental regulations and lack of sufficient growth in renewable energy sector have led to renewed interest in Fischer- Tropsch technology. Improved understanding of reaction mechanisms and development of detailed kinetic models for Fischer-Tropsch synthesis (FTS) would facilitate better design and optimization of all FTS reactor configurations. In this work, detailed kinetic mo Read More
-
-
-
Condition-Based Maintenance for Systems with Dependent Failure Modes
Authors: Abdel Magid Hamouda, Khalifa Al-Khalifa, Elsayed Elsayed, David Coit and Liu XiaoAbstract Many complex maintainable systems are subject to multiple dependent failure modes. In this research, we introduce a new model for modeling the stochastically dependent time-to-maintenance and time-to-failure of different failure modes. The model is then utilized to obtain the optimum Condition-Based Maintenance (CBM) schedules that maximizes the system availability over its life cycle, or, minimizes the long- Read More
-
-
-
New Catalysts for Next Generations of Plastics
Authors: Manal Sami, Hind Mamlouk and Martine SlawinskiAbstract Plastics, which are basically polymer materials, are now an integral part of our daily lives: packaging, transport, textile, Hi-technology… Total Petrochemicals produces and develops useful lightweight and durable plastics that play a key role in the sustainable development of our world, making our lives easier, cleaner, safer and more enjoyable. These products include polyethylene, polypropylene, polystyrene but also si Read More
-
-
-
Theoretical Efficiency Limits for Alternative Solar Cell Device Concepts
More LessAbstract As the demand for renewable energy sources is increasing, many alternative concepts have been explored to enrich the prospects. In the solar cell field, multi carrier generation, spectrum manipulation, thermo-photoelectric cells, hot carrier, intermediate band, and many other techniques have been studied as new concepts. In this work, the theoretical limits of multi-carrier generation and multi-interface pre sp Read More
-
-
-
The Utilization of Industrial Waste Heat for the Production of Fresh Water by Membrane Distillation: Industrial Case Studies in the Petrochemical and Gas Industry in Qatar
Authors: Majeda Khraisheh, Farid Benyahia, Samer Adham, Amna Hassan and Mariam JassimAbstract Membrane distillation differs from other membrane technologies in that the driving force for desalination is the difference in vapor pressure of water across the membrane, rather than total pressure. The membranes for MD are hydrophobic, which allows water vapor (but not liquid water) to pass. The vapor pressure gradient is created by heating the source water thereby elevating its vapor pressure. The majo Read More
-
-
-
Velocity Dependent Mobility Calculation Implemented in Finite Element Reservoir Simulator
Authors: Ahmad Abushaikha, Martin Blunt, Tara La Force and Olivier GosselinAbstract We implement a novel up-winding scheme for the mobility calculation using the computed velocities in an adaptive finite element (FE) unstructured-mesh reservoir simulator. In the finite-element finite-volume (FEFV) numerical method, the pressure and transport equations are decoupled. The pressure is calculated using finite elements, and the saturation is calculated using finite volumes. Each element is share Read More
-
-
-
Development of a Spray Characterization Experimental Facility
More LessAbstract In the recent years, development of alternative jet fuels is gaining importance owing to the demand for diversifying fuel and cleaner combustion. Liquid fuels have high volumetric energy content and ease of handling therefore preferred by the aviation industry. However, liquid fuels add additional complications in combustion process in thrust generation due to the needed preparatory steps of atomization and v Read More
-
-
-
Multiphase Flow Correlation Applied to Qatar's Pipelines
Authors: Mustafa Badieh Al-Waily, Ahmed Hassaan, Hadi Nasrabadi, Mohamed Haouche and Adrien TessierAbstract Multiphase flow occurs in almost all oil and gas wells and production installations. The past three decades have seen intense efforts to develop empirical correlations and modelling tools to improve the ability to predict multiphase-flow behaviour with greater accuracy. The empirical approach typically involves flowing fluids at carefully measured flow rates through a pipe, observing the flow pattern, and measuring liq Read More
-
-
-
Fischer-Tropsch Synthesis: Co turnover Frequency Rates over Co/Al2O3Catalysts with Different Reduction Promoters
Authors: Wenping Ma, Gary Jacobs, Tejas Bhatelia, Dragomir Bukur and Burtron DavisAbstract Cobalt (Co) turnover frequency (TOF) has been reported to be independent of Co dispersion and support type. However, wide discrepancies in Co TOF values exist in the literature. Differences in catalyst preparation, process conditions, and characterization technique could be major factors that may account for the discrepancies. Therefore, a more accurate assessment of Co turnover frequency (TOF) is nee Read More
-
-
-
Non-Invasive Monitoring of Oceanic Pipelines to Predict the Formation of Hydrates
Authors: Abdelwahab Aroussi, Uvais Qidwai and Mert AtilhanAbstract Hydrate formation in the Oil & Gas pipelines that runs from the off-shore wells to the on-shore facilities is one of the most serious problems that was faced during last winter season within the industrial settings in Qatar. The main reason was a sudden drop in temperature of the surrounding water that causes the condensation of hydrates, producing heavy paraffin derivatives that essentially choke the pipeline. An Read More
-
-
-
Solar to Energy: CO2 Conversion to Fuel, An Overview and Applications
Authors: Majeda Khraisheh, Elitsa Dzhongova and Junwang TangAbstract The current technology for CO2 reduction is CO2 capture and storage (CCS). An alternative technology is to capture CO2 and convert it to chemicals by thermal catalysis. The technology is not appropriate to low concentration of CO2 (<1%), such as CO2 in air except it has to be driven by thermal energy mainly produced by fossil fuel combustion. The solar energy driven CO2 conversion is an only technology without ext Read More
-
-
-
Solar Dish-Ericsson Engine: A Novel Solar Technology for the 21th Century
More LessAbstract Solar energy in Qatar promises clean electricity generation for operating air conditioning, water desalination plants, irrigation water, industrial applications, and fulfill future needs by controlling CO2 in order to achieve Qatar's Vision 2030. This solar energy potential has many economic benefits, reduces greenhouse gas emissions, and helps to comply with the Kyoto Protocol on climate change. In order to mak Read More
-
-
-
Energy Auditing: Towards Energy Balance for Qatar Vision 2030
More LessAbstract Qatar has high increasing electrical energy demand, from less than 50MW 1954 to 5,250MW in 2010. Electrical energy generating was only 1,500MW in 1995, 4,535MW in 2009, and soon will be 9,000MW. The expected additional capacity needed by 2016 is 5,500MW with high average emission CO2 of 32 tons/capita/year. Qatar has strong solar energy potential, (2070–2250)kWH/m2yr, which could takes place t Read More
-
-
-
Upon Embarking Solar Photovoltaic
Authors: Fedaa Ali and Rabi MohtarAbstract All GCC countries are projected to substantial rise in energy demand, while Qatar's share of GCC energy demand is projected to increase from around 10% to 15% from 2010 to 2020. Qatar also ranked in the top ten for GHG emissions per capita worldwide in 2008. The long-term costs of green house gas (GHG) emission reductions will depend, in part, on future technological innovations, many of which are presently unk Read More
-
-
-
Theoretical Studies on the Ethylene Purification Using Substituted Nickel Dithiolenes
Authors: Mohamed Shibl, Edward N. Brothers, Li Dang and Michael B. HallAbstract The world is running out of energy, thus energy preservation is of paramount importance. Using current technology, ethylene is purified from petroleum feed stocks using the very energy intensive cryogenic distillation method. However, a purification procedure based on the redox properties of nickel bis-dithiolene complexes has been theoretically studied, in order to design a more convenient route to ethylene purif Read More
-
-
-
Biofuel from Used Vegetable (Cooking) Oil
Authors: Sakthivel Sundaresan, Sudipta Halder, Purshottam das Gupta and Narendra AgnihotraAbstract Everyday people use cooking oil at home and various commercial establishments in the hospitability industry. Particularly hotels and restaurants are generating 0.1 million tons /year of waste cooking oil in India and other countries such as US (0.3–0.4 million tons), EU (0.7–1 million tons), United Kingdom (0.2 million tons), and Canada (0.135 million tons). However, most of the used vegetable oils are still regarded as Read More
-
-
-
Investigation of Heat Transfer Performance of Nanofluids Flow in a Microchannel
Authors: Anoop Kanjirakat and Reza SadrAbstract Miniaturization and increase in performance of electronic devices, resulted in an increase of energy density loads generated. In recent times, micro-scale cooling devices such as microchannel heat sinks have evolved as a plausible solution to the above heat transfer challenge. Nanofluids emerged as a good candidate in improving the cooling performance of micro cooling systems. Nanofluids are colloidal suspe Read More
-