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Showing posts with label cambridge. Show all posts
Showing posts with label cambridge. Show all posts

Wednesday, 10 April 2013

Spring Meeting in Cambridge: biomass power and carbon capture



British Section spring meeting, coinciding with an evening meal to celebrate the 75th birthday of Allan Hayhurst.
  

Biomass Fuelled Power Generation with CO2 Capture

Friday 24 May 2013

The Møller Centre, Cambridge

Click here for registration and full programme of speakers.

What is it about?
Biomass is a flexible resource, capable of conversion to heat, power and transport fuel energy vectors (as well as bio-materials). Biomass produced in the UK has the potential to provide 10% of UK Energy mix in 2050. Currently, on practical scales biomass co-firing has been implemented in several fossil-fired power plants. However, more effort in terms of realisation of large scale dedicated biomass combustion, gasification or pyrolysis plants is still required. Further, combined with Carbon Capture and Storage (CCS) technologies, biomass conversion to heat and/or power could provide the UK with substantial net negative CO2 emissions, with the potential to remove 50 to 100 MT of CO2 from the atmosphere on an annual basis (depending on capture rates) and provide 80 to 120 TWhr of electricity annually.

The Conference

This conference focuses on the scientific developments and techno-economic issues related to realisation of biomass (both co-fired and dedicated) based power generation through combustion, gasification and pyrolysis, with or without the various pre-, post- and oxy-combustion CO2 capture technologies.
This conference is suitable for industrial researchers, process engineers, technical managers, and the academic community interested in carbon-negative power generation. 

Monday, 16 April 2012

Publishing Science, Profits and the Public Interest

Invited article written by Professor Simone Hochgreb, University of Cambridge, Secretary of the Committee of the Combustion Institute British Section.

News erupted over the past year, starting with an article by George Monbiot on the obscene profits of academic publishers in August 2011. This has been followed by a number of articles, and the announcement by Fields Medal Winner Timothy Gowers not to submit articles to Elsevier journals on 21 January 2012, leading to a movement which collected 9000 signatures of scholars who pledged to refrain from working for publishers which restrict free sharing as authors, reviewers or editors.

Newton's Principia
Philosophiae Naturalis Principia Mathematica (wikipedia)
In parallel, Sir Mark Walport, director of Wellcome Trust, the second largest non-governmental funder of medical research, found out from moving from his prior job as an academic that he could not download publications which he might have published himself at his new organization. As a result, the Wellcome Trust is now launching a high calibre scientific journal free on the web. The momentum behind open source publishing is clearly gaining ground by the day.But first, let's do the numbers that have led to the belated outrage directed in particular at Elsevier:

1) The market: the academic publishing market was around 19 million USD, 43% controlled by Elsevier, Springer and Wiley, whilst the remainder fragmented among over 2000 publishers [1]. These numbers are from 2002, so assuming steady growth of 3%, the absolute numbesr could be over 30% higher.

2) These big three publishers control all top journals (Nature, Science, and the top journals in other scientific realms). Given that most libraries need these subscriptions, and most authors need to be published in the top journals to be considered for academic promotion, this gives the journals stupendous bargaining powers. Interestingly, the numbers on what they charge different universities are not necessarily available, as prices paid by universities are covered by confidentiality clauses with publishers. According to David Prosser, executive director of Research Libraries UK, "British universities spend around £200m a year on subscriptions to electronic databases and journals, which is around 10% of the block grants the institutions receive from government", that means, a sizable fraction of the overhead.

3) As a result, profit margins for these publishers are mind-boggling: Elsevier has just boasted results for 2011, with a profits/revenue ratio of (27%) which are similar to 2010 (27%) [2], and Springer not far behind with 18.6% for 2011 [3].

Before we all run out and buy some stock, let us consider for a moment what allows this state of affairs:

1) Research is produced, written up, reviewed, corrected, formatted and uploaded by each one of us, with additional hours devoted by the many editors and assistant editors -- for no pay.

2) We give the publishers the rights to own the labour and the good name of the journals, which are associated with the eminence of the editorial boards, for historical reasons: the various societies outsourced the formerly tedious job of editing to companies. Interestingly, the companies have automated the publishing job, but we still do all the editing, proofreading and fact checking.

3) We pay them through our university overheads or our direct downloads for the privilege of maintaining the servers that automate the process, and for the pleasure of negotiating bulk deals to buy back what we produced for incredibly high prices.

4) We proudly point to our list of publications on these journals during promotion and tenure decisions. The more prestigious and expensive (which correlates with the number of citations, as these are disseminated further) the journal, the more points we get.

In summary, this is a strange state of affairs, which is maintained through our complacent inertia, as this seems too big a problem to attack. It is also not a new issue, but one which has proven resilient to change, which is why the profits and the charges to our libraries continue. Other societies in our field of fluid mechanics in combustion (SAE, AIAA, ASME) can be even worse, providing less service in readying papers for publishing than journals, for higher charges, but creating an audience and the appearance of peer review.
Whereas there continues to be significant movement in open source publishing, the evolving picture of open access may not lend itself to a grand ending, but rather a series of small steps.

1) Insist on maintaining the copyright, and deposit material in archival repository such as dspace: many journals, including Elsevier, allow this, but the fine print is still moving and uncertain.

2) Consider publishing open source journals (PLoSOne), or society journals (AIP, RSC) which charge libraries significantly less.

3) Work with the different societies in the field to understand the costs of breaking the oligopoly of publishing, given that online publishing tools are so widely available: keep the peers and their review, but understand whether the same or better service in delivering on-line archival material can be obtained.
Finally, there remains the issue of the indexing and how we are all subject to the vagaries of Thomson-Reuters and its ownership of the largest abstract indexing engine. But that will be the subject of another article.

References

1. G. S. McGuigan, R. D. Russell, The Business of Academic Publishing: A Strategic Analysis of the Academic Journal Publishing Industry and its Impact on the Future of Scholarly Publishing, Electronic Journal of Academic and Special Librarianship, v. 9, n. 3 (2008).
2. Reed Elsevier 2011 Results.
3. Springer press release 2011 Results.

Friday, 5 August 2011

Cambridge Postdoctoral Associate in Thermoacoustics

A position exists for a postdoctoral associate to work on experimental measurements and laser diagnostics of aeroengine injectors, targetting thermoacoustic characteristics. The project is funded by EPSRC and EU grants and will involve significant collaboration with Rolls-Royce. The aim of the project is to understand the origins of thermoacoustic behaviour of different aeroengine injectors and what factors control the response of the flame to thermoacoustic perturbations.

Acoustically-coupled combustion oscillations are a concern in industrial gas turbines, where they have led to long commissioning times, unplanned maintenance and gaps in operation. Such oscillations are also expected in current and next generation fuel-lean aeroengine combustors. Passive control strategies are needed to minimize the amplitude of the pulsations in order to achieve cleaner power production.

The project will be developed in the Intermediate Pressure Combustion Facility at Cambridge, investigating full size injectors at realistic operating conditions up to 10 bar and 600 oC. The successful candidate will have a background in combustion and laser diagnostics and/or thermoacoustics. Preference will be given to candidates with experience in high pressure devices or laser diagnostics (PLIF/PIV and related imaging techniques), great attention to detail and ability to work under tight deadlines.

The candidate will perform most of her/his research activities in the Cambridge Combustion Group, a large group in the overall area of combustion, with state of the art experimental facilities.

The starting salary details are dependent on experience, but will range from £27,428 to 31,798. The starting date will be as soon as possible for 18 months, with an end date of May 2013. Further details may be obtained from Prof. Simone Hochgreb, Department of Engineering, Trumpington Street, Cambridge, CB2 1PZ, (Tel +44 1223 764098, email: simone.hochgreb@eng.cam.ac.uk), to whom a letter of application, CV, sample publications and list of references should be sent as soon as possible.


Further Particulars
The research involves operation of a high pressure, high-temperature combustion rig, the Cambridge High Pressure Facility, with the assistance of a dedicated technician, with the objective of understand the behavior of self-excited and forced spray flames.

The work is funded by the EU (TECC-AE, KIAI), EPSRC and Rolls-Royce plc. There
are several interrelated work packages to be delivered, all focusing on using imaging diagnostics to measure species, liquid fuel and flame characteristics. The facility is reasonably automated, but the researcher will be expected to be adept at debugging experimental problems and coming to grips with a relatively complex system involving a number of controls. Training is available by the resident technician as well as an experienced post-doc. The researcher will be expected to comply with all safety and procedure regulations for the facility. Although some of the geometries used are proprietary, it is expected that the results will be publishable after agreement with the lead sponsors.

The candidate is expected to have experience in relevant experimental techniques in
combustion, particularly with regards to laser imaging. Essential to the position are the ability to manage a project independently, to organize the work and communication, to collaborate effectively with other members of the technical and professional staff, and to work using planned, safe and prudent practices. Excellent professional communication skills, both in writing and technical presentations, are highly desirable. Periodic reporting to sponsors and other stakeholders will be required.

Candidates are encouraged to enclose publications and a list of referees along with their CVs. Shortlisted candidates will be invited to an interview for the final selection.

Thursday, 2 September 2010

Autumn Meeting 2010: Gas Turbine Combustion

Combustion Institute Autumn Meeting and AGM 2010: Gas Turbine Combustion

The Autumn meeting of The Combustion Institute (British Section) will take place at the Department of Engineering at the University of Cambridge. The one-day meeting will cover current research in industry and academia related to problems in gas turbine combustion. The AGM for the Combustion Institute will also take place during the meeting, and all members are encouraged to attend. A poster session will be held during the meeting, and a prize will be awarded to the best contribution.

For registration and information, please check the meeting website at http://www-g.eng.cam.ac.uk/gtcombustion/cibs/

We look forward to seeing you there.