Energy Use:

Process modelling

  • Fully Funded PhD Studentship in EPSRC Centre for Doctor Training (CDT) – Resilient decarbonised fuel energy systems

    Fully Funded PhD Studentship in EPSRC Centre for Doctor Training (CDT) - Resilient decarbonised fuel energy systems

    Supervisor: Dr Ehsan Alborzi, Prof. Mohamed. Pourkashanian; Department of Mechanical Engineering, University of Sheffield. Industrial supervisors: Mr Paul Ferra; Dr Marco Zedda, Rolls Royce, Derby

    Utilisation of Sustainable Aviation Fuel (SAF) as blend with petroleum-derived aviation fuels or standalone replacements offers an advantageous step towards decarbonised aviation, for foreseeable future, in response to the net-zero emission target by 2050. However, production of SAFs and market penetration is arduous as these fuels are subject to tighter tolerances and more certification hurdles than the petroleum-based aviation fuels due to a number of reasons amongst which safety of operation and compatibility with existing fleets are the most important criteria. For that reason, any new type of alternative fuel needs to be carefully assessed for a number physico-chemical properties. One of these properties is the propensity of aviation fuel to thermally degrade and forms gum and surface deposits in the aero-engine fuel injection system.

    We are seeking a talented and motivated individual to commence a PhD programme in September 2021. The PhD candidate will be exploring the underlying molecular interactions between agglomerated molecules and a stainless steel and nickel alloy during sustainable aviation fuel thermal oxidative degradation. The formation of agglomerated insoluble materials and deposition of these on surfaces of aero-engine fuel injection system is of great concern for both jet engine manufacturers and fuel producers.

    The PhD topic is an interdisciplinary research project which covers the following areas:

    – Ab initio quantum chemistry calculations, in vacuum and for periodic surface systems;
    – Analysis and extension of chemical kinetics mechanism for fuel thermal degradation;
    – Execution of small-scale experimental work for the acquisition of data and validation of the proposed mechanism using available equipment in Sustainable Aviation Fuel Innovation Centre (SAF-IC) at the University of Sheffield

    We are offering an opportunity for a full time, 4 year PhD programme, funded by the EPSRC Centre for Doctor Training (CDT) “Resilient decarbonised Fuel Energy Systems” and Rolls Royce. starting in September 2021. Candidates should have a first or high 2.1 class honours degree in an engineering or science discipline (e.g. chemistry, chemical engineering, mechanical engineering, or applied mathematics). A strong background in organic reactions (design and data analysis in chemical engineering), numerical work and / or chemical kinetics are desirable but not essential. A good knowledge of Linux for working with the university’s High Performance Computing (HPC) is preferable.

    The PhD candidate will be working alongside a dedicated team of researchers in Translation Energy Research Centre(TERC), Sustainable Aviation Fuel Innovation Centre (SAF-IC). As the project is partially funded by Rolls Royce, the PhD candidate will have the opportunity to work with Rolls Royce experts in Derby. The scholarship on offer (to eligible students) comprises a tax-free stipend of £18,757 (2020/2021) a year for four years, and paid UK/EU tuition fees. Due to funding restrictions, this position is only available for UK candidates.

    Informal enquiries may be sent to Dr Ehsan Alborzi e.alborzi@sheffield.ac.uk
    Please note that applications sent directly to this email address will not be accepted.
    If you are interested, please apply online at: http://www.sheffield.ac.uk/postgraduate/research/apply/applying

  • Fully Funded PhD Studentship in EPSRC Centre for Doctor Training (CDT) – Resilient decarbonised fuel energy systems

    A Societal Index Model for the Assessment of the Safety, Operability and Resilience level of Regional Mini Energy Grid

    Supervisor: Dr Y Wu, Prof M Pourkashanian,  Dr K Hughes  

    The project is aimed at developing an open expert system for the end user and also for the developer to carry out the risk analysis involved in systems utilizing upcoming new energy technologies.  This will also aid in the implementation of strategies to manage and minimize the risks involved. The system will incorporate the expert suites for risk assessment techniques and frameworks, as well as the codes/standards and numerical models to predict the consequences of fires, explosions and other accidents at data banks through the form of case studies.  The expert system will produce a societal index to aid the decision making process on the energy systems’ safety, security level, operability and resilience.

     

  • Fully Funded PhD Studentship in EPSRC Centre for Doctor Training (CDT) – Resilient decarbonised fuel energy systems

    Process Optimization of Liquid Fuel Synthesis From Renewable Energy Sources

    Supervisor: Professor Mohamed Pourkashanian, Professor Lin Ma and Dr Kevin Hughes

    Demand for energy supply in the present global environment is continuously increasing with the growth of population and economic development. This poses problems both in terms of sustainability and carbon emissions. Standard approaches to CO2 capture and storage impose a cost that discourages their implementation. This project proposes to investigate an alternative which is the conversion of CO2 with hydrogen into a commercially valuable liquid fuel. The gPROMs and ASPEN process modelling packages will be used to investigate the overall system performance and economics of various plant configurations, and propose optimal configurations for these systems.

     

  • Fully Funded PhD Studentship in EPSRC Centre for Doctor Training (CDT) – Resilient decarbonised fuel energy systems

    Dynamic simulation of load-following power plants integrated with CO2 capture technologies

    Supervisor: Professor Mohamed Pourkashanian, Dr Kevin Hughes, Professor Lin Ma and Dr Maria Elena Diego de Paz

    Flexible operation of fossil fuel power plants is becoming a hot topic in the energy generation sector due to the expected increase of intrinsically intermittent renewable technologies in the energy mix in the near future. This flexible operation mode of the energy systems is challenging, especially when these plants are coupled to CO2 capture technologies. This study aims at investigating the dynamic behavior of natural gas fired power plants integrated with a post-combustion amine CO2 capture system, using process simulation tools such as Aspen Hysys and/or gCCS (gPROMS). The performance of the whole system will be assessed under dynamic conditions. Different integration options between the power plant and the capture system will be studied and analysed from a techno-economic perspective.

     

  • Fully Funded PhD Studentship in EPSRC Centre for Doctor Training (CDT) – Resilient decarbonised fuel energy systems

    Analysis of post-combustion CO2 capture from natural gas power plants using CFD and process co-simulation

    Supervisor: Professor Mohamed Pourkashanian, Dr Kevin Hughes, Professor Lin Ma and Dr Maria Elena Diego de Paz

    The use of natural gas as a fuel for electricity production is expected to gradually increase in the next decades. Since it is acknowledged that large CO2 emission cuts should be achieved in the near future, it seems plausible that these systems may have to be coupled to CO2 capture schemes. This research project focuses on combining computational fluid dynamics (CFD) and process simulation tools to study in detail the performance of an amine capture post-combustion plant coupled to a natural gas combined cycle (NGCC) power plant using the synergetic combination between Ansys Fluent and Aspen Hysys/gCCS (gPROMS) modelling tools. The idea is to replace the typical absorber and stripper blocks present in the process simulation flowsheet by more detail-designed units built using CFD tools. This will allow for a more accurate description of the system and better characterization of the performance of the key units of the capture process. Several NGCC variants will be studied and analyzed following this procedure, including conventional NGCC plants and those incorporating exhaust gas recirculation (EGR) and selective exhaust gas recirculation (S-EGR) options. This is part of research activities that include virtual reality power industry plant simulation.