390 results found
Shearing PR, Howard LE, Jorgensen PS, et al., 2010, Characterization of the 3-dimensional microstructure of a graphite negative electrode from a Li-ion battery, ELECTROCHEMISTRY COMMUNICATIONS, Vol: 12, Pages: 374-377, ISSN: 1388-2481
Zhao Y, Shah N, Brandon N, 2010, The Development and Application of a Novel Optimisation Strategy for Solid Oxide Fuel Cell-Gas Turbine Hybrid Cycles, FUEL CELLS, Vol: 10, Pages: 181-193, ISSN: 1615-6846
Maher RC, Brightman E, Heck C, et al., 2010, Monitoring Solid Oxide Fuel Cell Processes Using In-Situ Raman Spectroscopy, 22nd International Conference on Raman Spectroscopy, Publisher: AMER INST PHYSICS, Pages: 550-550, ISSN: 0094-243X
Brandon NP, Matian M, Marquis AJ, et al., 2010, THERMAL MANAGEMENT ISSUES IN FUEL CELL TECHNOLOGY, 14th International Heat Transfer Conference, Publisher: AMER SOC MECHANICAL ENGINEERS, Pages: 591-599
Panos C, Kouramas KI, Georgiadis MC, et al., 2010, Modelling and Explicit MPC of PEM Fuel Cell Systems, 20TH EUROPEAN SYMPOSIUM ON COMPUTER AIDED PROCESS ENGINEERING, Vol: 28, Pages: 517-522, ISSN: 1570-7946
Offer GJ, Howey D, Contestabile M, et al., 2010, Comparative analysis of battery electric, hydrogen fuel cell and hybrid vehicles in a future sustainable road transport system, ENERGY POLICY, Vol: 38, Pages: 24-29, ISSN: 0301-4215
, 2010, Performance investigation of a SOFC-GT hybrid system based on thermodynamic optimization strategies, Proceedings of the 23rd International Conference on Efficiency, Cost, Optimization, Simulation, and Environmental Impact of Energy Systems, ECOS 2010, Vol: 5, Pages: 9-16
A thermodynamic optimization methodology is developed to model, analyze, and predict the system behaviour of a combined SOFC-GT cycle. The system efficiency and power output are used as a basis to optimize the whole hybrid power plant. The optimized performance characteristics are presented and discussed in detail through a parametric analysis. Simulations of the effects that various design and operating parameters have on system performance have led to some interesting results. This study can be considered as a preliminary investigation of more complex fuel cell and gas turbine hybrid systems incorporating additional practical irreversible losses.
Matian M, Marquis A, Brett D, et al., 2010, An experimentally validated heat transfer model for thermal management design in polymer electrolyte membrane fuel cells, PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY, Vol: 224, Pages: 1069-1081, ISSN: 0957-6509
Cai Q, Adjiman CS, Brandon NP, 2010, Modelling the dynamic response of a solid oxide steam electrolyser to transient inputs during renewable hydrogen production, Frontiers of Energy and Power Engineering in China, Vol: 4, Pages: 211-222
Hawkes AD, Brett DJL, Brandon NP, 2009, Fuel cell micro-CHP techno-economics: Part 2-Model application to consider the economic and environmental impact of stack degradation, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, Vol: 34, Pages: 9558-9569, ISSN: 0360-3199
, 2009, The impact and mitigation of carbon formation on Ni-YSZ anodes from biomass gasification tars, Pages: 111-117, ISSN: 1938-5862
The combination of Solid Oxide Fuel Cells (SOFCs) and biomass gasification has the potential to become an attractive technology for the production of clean renewable energy. However the impact of tars, formed during biomass gasification, on the performance and durability of SOFC anodes has not been well established experimentally. This paper reports on an experimental study assessment of the performance and mitigation of carbon formation on the anodes of SOFC button cells from synthetic model tars arising from the gasification of biomass material. The anode material was a 60:40 wt.% NiO/YSZ cermet, which was tested in a synthetically generated syngas containing a concentration of up to 15 g/Nm3 biomass gasification tars. It was found that carbon formation in dry conditions significantly damaged the anode of the fuel cell resulting in decreased cell performance and excessive anode polarization resistances. These effects were reduced by applying a load to the cell, and were essentially inhibited once the steam content of the input fuel was > 2%. © The Electrochemical Society.
, 2009, Characterization of SOFC electrode microstructure using nano-scale X-ray Computed Tomography and Focused Ion Beam techniques: A comparative study, Pages: 51-57, ISSN: 1938-5862
In solid oxide fuel cells (SOFC) the redox reactions are supported by composite porous materials and, therefore, the electrochemical activity of an electrode is a direct function of its microstructure. Ni-YSZ (Yttria Stabilized Zirconia) is a common choice for the anode material in SOFC. Recently advances in tomographic techniques have enabled researchers to probe electrode microstructures providing unprecedented access to a wealth of microstructural information regarding the distribution of ionic, electronic and pore phases in three dimensions. In this paper nano-scale X-ray Computed Tomography (nCT) and Focused Ion Beam (FIB) techniques have been used to characterize microstructures from the same Ni-YSZ anode sample, 3D reconstruction from both techniques are presented and a quantitative and qualitative comparison is provided. An advanced technique for sample preparation for nCT is also presented. ©The Electrochemical Society.
Lawrence I, Cordner M, Brandon NP, 2009, Fuel cell racing: Imperial College London presents the Racing Green team, Pages: 302-311
Imperial Racing Green is a major initiative at Imperial College London to design, build and race zero emission vehicles in order to give students hands-on experience in the design, development and construction of fuel cell and battery vehicles, and win competitions like Formula Zero and Formula Student Class 1A, run by the Institute of Mechanical Engineers. The former competition is a time trial series for fuel cell go-carts, the latter is for single seat race cars and accommodates a wider range of technologies. The Imperial Racing Green entry to Formula Zero, codenamed IRG02, is a go-cart powered by a Hydrogenics 8kW PEM fuel cell coupled via a DC/DC converter in a current control loop to two banks of 165F Maxwell ultra-capacitors. Overall vehicle control is achieved with a National Instruments CompactRio, which also acts as a data logger. The Imperial Racing Green entry to Formula Student Class 1A, codenamed IRG03, has a modular 25kW electric drive, braking and suspension assembly at each corner. Racing Green will continue to compete in the Formula Zero Championship throughout 2009, and will compete in Formula Student Class 1A at Silverstone in July 2009. This project has demonstrated that new approaches to project based learning can generate enormous student interest and international media attention, while being rewarding to the academics and researchers involved too. This paper gives detailed information of the design of IRG02 and presents data recorded during the Formula Zero race of August 2008. A summary of the design of IRG03 is also given, concluding with lessons learnt and future plans.
Hawkes AD, Brett DJL, Brandon NP, 2009, Fuel cell micro-CHP techno-economics: Part 1-model concept and formulation, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, Vol: 34, Pages: 9545-9557, ISSN: 0360-3199
Mermelstein J, Brandon N, Millan M, 2009, Impact of Steam on the Interaction between Biomass Gasification Tars and Nickel-Based Solid Oxide Fuel Cell Anode Materials, ENERGY & FUELS, Vol: 23, Pages: 5042-5048, ISSN: 0887-0624
Shearing PR, Golbert J, Chater RJ, et al., 2009, 3D reconstruction of SOFC anodes using a focused ion beam lift-out technique, CHEMICAL ENGINEERING SCIENCE, Vol: 64, Pages: 3928-3933, ISSN: 0009-2509
Bidault F, Brett DJL, Middleton PH, et al., 2009, A new application for nickel foam in alkaline fuel cells, 4th Dubrovnik Conference on Sustainable Development of Energy, Water and Environment Systems, Publisher: PERGAMON-ELSEVIER SCIENCE LTD, Pages: 6799-6808, ISSN: 0360-3199
Lorente E, Cai Q, Pena JA, et al., 2009, Conceptual design and modelling of the Steam-Iron process and fuel cell integrated system, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, Vol: 34, Pages: 5554-5562, ISSN: 0360-3199
Offer GJ, Brandon NP, 2009, The effect of current density and temperature on the degradation of nickel cermet electrodes by carbon monoxide in solid oxide fuel cells, CHEMICAL ENGINEERING SCIENCE, Vol: 64, Pages: 2291-2300, ISSN: 0009-2509
Kim P, Brett DJL, Brandon NP, 2009, The effect of water content on the electrochemical impedance response and microstructure of Ni-CGO anodes for solid oxide fuel cells, JOURNAL OF POWER SOURCES, Vol: 189, Pages: 1060-1065, ISSN: 0378-7753
Offer GJ, Mermelstein J, Brightman E, et al., 2009, Thermodynamics and Kinetics of the Interaction of Carbon and Sulfur with Solid Oxide fuel Cell Anodes, JOURNAL OF THE AMERICAN CERAMIC SOCIETY, Vol: 92, Pages: 763-780, ISSN: 0002-7820
Blanchard R, Brandon NP, Infield D, et al., 2009, UK microgeneration. Part I: Policy and behavioural aspects, Proceedings of Institution of Civil Engineers: Energy, Vol: 162, Pages: 23-36, ISSN: 1751-4223
A critical review of the literature relating to government policy and behavioural aspects relevant to the uptake and application of microgeneration in the UK is presented. Given the current policy context aspiring to zero-carbon new homes by 2016 and a variety of minimum standards and financial policy instruments supporting microgeneration in existing dwellings, it appears that this class of technologies could make a significant contribution to UK energy supply and low-carbon buildings in the future. Indeed, achievement of a reduction in greenhouse gas emissions by 80% (the UK government's 2050 target) for the residential sector may entail substantial deployment of microgeneration. Realisation of the large potential market for microgeneration relies on a variety of interrelated factors such as microeconomics, behavioural aspects, the structure of supporting policy instruments and well-informed technology development. This paper explores these issues in terms of current and proposed policy instruments in the UK. Behavioural aspects associated with both initial uptake of the technology and after purchase are also considered.
Mermelstein J, Millan M, Brandon NP, 2009, The impact of carbon formation on Ni-YSZ anodes from biomass gasification model tars operating in dry conditions, CHEMICAL ENGINEERING SCIENCE, Vol: 64, Pages: 492-500, ISSN: 0009-2509
Bidault F, Brett DJL, Middleton PH, et al., 2009, Review of gas diffusion cathodes for alkaline fuel cells, JOURNAL OF POWER SOURCES, Vol: 187, Pages: 39-48, ISSN: 0378-7753
Liu YH, Wu ZQ, Lin SJ, et al., 2009, Application of the Power Flow Calculation Method to Islanding Micro Grids, International Conference on Sustainable Power Generation and Supply, Publisher: IEEE, Pages: 750-+
, 2009, Comparison of two novel optimization strategies for solid oxide fuel cell-gas turbine hybrid systems, Pages: 265-266
A novel methodological and structured optimization procedure has been developed to model, analyze, and predict the system behavior of a SOFC-GT hybrid cycle under different optimal conditions. Performance characteristics of the hybrid system based on two optimization strategies are discussed and compared through a detailed parametric analysis. Simulation of the effects that various parameters have on the system performance has led to some interesting results, and some new optimum performance criteria have been obtained.
Hawkes A, Staffell I, Brett D, et al., 2009, Fuel cells for micro-combined heat and power generation, ENERGY & ENVIRONMENTAL SCIENCE, Vol: 2, Pages: 729-744, ISSN: 1754-5692
Adjiman C, Atkinson A, Azad A, et al., 2009, A Review of Progress in the UK Supergen Fuel Cell Programme, 11th International Symposium on Solid Oxide Fuel Cells (SOFC), Publisher: ELECTROCHEMICAL SOC INC, Pages: 35-42, ISSN: 1938-5862
Aguiar P, Brett DJL, Brandon NP, 2008, Solid oxide fuel cell/gas turbine hybrid system analysis for high-altitude long-endurance unmanned aerial vehicles, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, Vol: 33, Pages: 7214-7223, ISSN: 0360-3199
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