Combustion:

Combustion

  • PhD scholarship: Deposition prevention for future power stations – an international collaboration with USA

    PhD scholarship: Deposition prevention for future power stations – an international collaboration with USA

     

    The concern over the environment impact of burning fossil fuels for power generation and fluctuations in the fuel price have led to the power plants increasingly using variable fuels and biomass. Some of these fuels often have very different chemical compositions and can cause severe deposition inside the combustion furnace and this can potentially lead to a substantial reduction in the efficiency of the boiler and unscheduled boiler shutdown. This has become a significant operational constraint for existing power stations to expand their range of fuel diet. Thus predicting deposition and slagging propensity is of vital importance to power plants running new fuels.

    This PhD Studentship will support the research on particulate behaviours of new fuels and develop novel predictive models for slagging and fouling in industrial furnaces. The project will be built on existing research, which has previously been carried out for many years by the Sheffield team, with the measurement data from the national PACT facilities and in collaboration with Electric Power Research Institute in the USA.

    The studentship will be available for a period of 3.0 years at the standard EPSRC rate which covers UK/EU fees and includes a non-taxable stipend, currently of £14,296p.a., and a budget for IT equipment, books, software and travelling to conferences, and/or project meetings.

    Potential applicants should have, or are expecting to obtain in the near future, a first class honours degree in engineering, mathematics, or science. The studentship is open to UK/EU candidates only and therefore the successful candidates should fulfil the eligibility criteria for EPSRC funding through UK nationality and/or residency status.

    The research work will be based in the Energy 2050 initiative, the Department of Mechanical Engineering, to develop world-leading activity in energy research. The student will be working within an exciting and dynamic group with approximately 40 PhD researchers and over 12 postdoctoral research fellows undertaking a broad area of energy research with strong links to industry.

    The Department of Mechanical Engineering has been a major discipline in the University since its foundation in 1905. The Research Excellence Framework (REF, December 2014) placed the Department within the Top 5 for Mechanical Engineering in the UK.

    For further information please contact Professor Derek Ingham (D.Ingham@Sheffield.ac.uk)

  • PhD scholarship: Deposition prevention for future power stations – an international collaboration with USA

    PhD scholarship: Zero emissions power plants through combustion optimisation

    The combustion of fossil fuels for power generation will remain to play a significant role to meet the increasing energy demand in the foreseeable future. Improving the fundamental understanding of the combustion and pollutant formation processes can lead to improved plant performance and substantially reduce the pollutant emission.

    Computational Fluid Dynamics (CFD) modelling is a powerful tool that, due to recent advances in computational power, has become useful in aiding the design and development of advanced power generation technologies with significant climate change mitigation potential. This project will use CFD as a tool, including using the Reynolds Average NS equations (RANS) and the Large Eddie Simulations (LES) and develop advanced new models to investigate the combustion phenomena that drive the heat transfer, pollutant emissions of thermal fired power plants. The research will be supported from the data collected from the national PACT facilities as validation and verification. The research output will directly contribute to the next generation flexible and low emission burner designs for stable and efficient operation of power plants.

    The studentship will support a highly motivated researcher to undertake this cutting edge research for future energy and power generation technologies. The successful applicants will receive appropriate training to work at the forefront of research.

    The studentship will be available for a period of 3.0 years at the standard EPSRC rate which covers UK/EU fees and includes a non-taxable stipend, currently of £14,296p.a., and a budget for IT equipment, books, software and travelling to conferences, and/or project meetings.

    Potential applicants should have, or are expecting to obtain in the near future, a first class honours degree in engineering, mathematics, or science. The studentship is open to UK/EU candidates only and therefore the successful candidates should fulfil the eligibility criteria for EPSRC funding through UK nationality and/or residency status.

    The research work will be based in the Energy 2050 initiative within the University of Sheffield, and the Department of Mechanical Engineering to develop world-leading activity in energy research. The student will be working within an exciting and dynamic group with approximately 40 PhD researchers and over 12 postdoctoral research fellows undertaking a broad area of energy research with strong links to industry.

    The Department of Mechanical Engineering has been a major discipline in the University since its foundation in 1905. The Research Excellence Framework (REF, December 2014) placed the Department within the Top 5 for Mechanical Engineering in the UK.

    For further information please contact Professor Derek Ingham (email: d.ingham@sheffield.ac.uk)

  • PhD scholarship: Deposition prevention for future power stations – an international collaboration with USA

    Enhance the resilience of the UK gas networks to meet the future challenges   

    The natural gas networks have played an important role in the energy supply to both domestic and industrial users in the UK – and will need to continue to do so.  However as the energy supply diversifies and localized renewable energy production emerges and needs to be integrated into the system, the gas networks face increasing pressure.  Considerable upgrading and adaptations of the network will consequently be required to meet the market changes.  This project will investigate the effect of adding the gas produced from renewable technologies into the network and examine their effects on the network safety level and integrity. The project will involve both experimental investigation and chemical kinetic modelling of mixtures of natural gas, syn-gas and hydrogen.   Case studies will be carried out on a variety of systems, including the wind-to-gas mini grid based in Sheffield.

     

  • PhD scholarship: Deposition prevention for future power stations – an international collaboration with USA

    Novel technology to control the fire and explosion hazards of hydrogen fuel

    Safe pressure relief systems are essential to protect high pressure storage tanks in emergency situations. Hydrogen fuel has wide flammability limits and very low minimum ignition energy; therefore it could easily be ignited during the pressure release phase using the traditional pressure systems and therefore poses a significant fire and explosion hazard – both to the storage tanks themselves and to surrounding equipment and buildings. This project will develop advanced hydrogen pressure relief systems, incorporating some novel safety measures to prevent fires and explosions during hydrogen tank pressure relief processes. The project will involve experimental investigations and chemical kinetic modelling of the mixtures of hydrogen/hydrocarbon/quenching agent.

     

  • PhD scholarship: Deposition prevention for future power stations – an international collaboration with USA

    Turbulence modelling of combustion using Large Eddie Simulations (LES)

    Computational Fluid Dynamics modelling is a powerful tool that, due to recent advances in computational power, has become useful in aiding the design and development of advanced power generation technologies with significant climate change mitigation potential. Large Eddie Simulations (LES) is an advanced turbulence modelling approach with the potential to more accurately predict the combustion phenomena that drive the heat transfer, pollutant emissions, and fuel burnout of coal, gas and biomass fired power plants. However, development work based on experimental validation is necessary to make the technique more reliable and commercially applicable to the power generation sector.

    The project will characterise the near burner velocity field of a 250 kW test furnace at the Pilot Scale Advanced Capture Technology (PACT) Facilities using a velocity measurement probe.  This experimental data will be used to develop and validate advanced LES modelling approaches as part of a large CFD group focused on energy research.

    The aim will be to improve the existing LES turbulence modelling methods and drive forward the commercialisation of the approach to the power generation sector.