Browsing by Author "Simms, Nigel J."

Advanced reliability analysis of complex offshore Energy systems subject to condition based maintenance.

Elusakin, Tobiloba (Cranfield UniversitySWEE, 2021-04)

As the demand for energy in our world today continues to increase and conventional reserves become less available, energy companies find themselves moving further offshore and into more remote locations for the promise ...

Analysis of combined static load and low temperature hot corrosion induced cracking in CMSX-4 at 550°C

Brooking, Laurie; Gray, Simon; Dawson, K.; Nicholls, John R.; Simms, Nigel J.; Sumner, Joy; Tatlock, G. J. (Elsevier, 2019-10-18)

A CMSX-4 3-point bend specimen was statically loaded under hot corrosion conditions and SEM, (S)TEM and EDX techniques were used to analyse the cracking generated. Sulphur, chlorine, sodium and oxygen were found at the ...

Analysis of high temperature steam oxidation of superheater steels used in coal fired boilers

Dudziak, T.; Lukaszewicz, Mikolaj; Simms, Nigel J.; Nicholls, John R. (Springer, 2015-10-30)

The present work compares the behaviour of four steels: (T23, T92, T347HFG, Super304H) in the temperature range 600–750 °C. This study focuses on the analysis of the oxidation kinetics in terms of mass change, metal loss ...

Approaches to modelling fireside corrosion of superheater / reheater tubes in coal and biomass fired combustion power plants

Simms, Nigel J.; Ekpe, Blessing; Riccio, Chiara; Mori, Stefano; Sumner, Joy; Oakey, John E. (ASM International, 2019-10-24)

The combustion of coal and biomass fuels in power plants generates deposits on the surfaces of superheater / reheater tubes that can lead onto fireside corrosion. This type of materials degradation can limit the lives of ...

Assessment of Coating Performance on Waterwalls and Superheaters in a Pulverised Fuel-Fired Power Station

Simms, Nigel J.; Seraffon, Maud; Pidcock, Andrew; Davis, Colin (Springer, 2017-01-11)

Protective coatings offer one route to increase the lives of heat exchangers in pulverised fuel power plants. A range of candidate coatings have been exposed on the waterwall and superheaters of a 500 MWe UK power station ...

Assessment of corrosive attack of Fe9Cr1Mo alloys in pressurised CO2 for prediction of breakaway oxidation

Gong, Yilun; Gill, Simon P. A.; Yan, Sabrina; Higginson, Rebecca; Sumner, Joy; Simms, Nigel J.; Larsson, Henrik; Shin, Aya; Pearson, Jonathan M.; Young, David J.; Atkinson, Colin; Cocks, Alan C. F.; Reed, Roger C. (Elsevier, 2023-07-27)

To provide clarity on the poorly-understood mechanism of breakaway oxidation, corrosion of Fe9Cr1Mo steel in pressurised CO is quantified and modelled. The temperature range 400–640 , relevant to nuclear power plants, ...

Biomass thermal conversion : pelletisation of lignocelluloses and the effect on the gasification process

Kallis, Kyriakos Xenofon (Cranfield University, 2012-03)

Agricultural residues and energy crops constitute an important part of the energy chain although they are not being used extensively in the energy generation processes since they are associated with disadvantages such ...

Characterization of full-scale carbon contactors for siloxane removal from biogas using online Fourier transform infrared spectroscopy

Hepburn, C. A.; Martin, B. D.; Simms, Nigel J.; McAdam, Ewan J. (Taylor & Francis, 2014-07-31)

In this study, online Fourier transform infrared (FTIR) spectroscopy has been used to generate the first comprehensive characterization of full-scale carbon contactors for siloxane removal from biogas. Using FTIR, two clear ...

Co-firing fossil fuels and biomass: combustion, deposition and modelling

Khodier, Ala H. M. (Cranfield University, 2011-01)

The application of advanced technologies employing combustion/co-firing of coal and biomass is seen as a promising approach to minimising the environmental impact and reducing CO2 emissions of heat/power production. The ...

Combined hot corrosion and static stress or fatigue of single crystal superalloys.

Brooking, Laurie Finian (2018-09)

It has been observed that gas turbine (GT) blades operating in harsh environments can undergo material degradation in the form of crack initiation and propagation before that predicted by fatigue lifing. It is thought that ...

Comparative evaluation of SRF and RDF co-combustion with coal in a fluidised bed combustor

Garg, A.; Smith, Richard; Longhurst, Philip J.; Pollard, Simon J. T.; Simms, Nigel J.; Hill, D. (2007-10-01)

The experimental study reported here was carried out to assess the feasibility of municipal solid waste (MSW) derived solid recovered fuel (SRF) in energy recovery applications. SRF was prepared by grinding and blending ...

Comparison of coal/solid recovered fuel (SRF) with coal/refuse derived fuel (RDF) in a fluidised bed reactor.

Wagland, Stuart Thomas; Kilgallon, P.; Coveney, R.; Garg, A.; Smith, Richard; Longhurst, Philip J.; Pollard, Simon J. T.; Simms, Nigel J. (Elsevier Science B.V., Amsterdam., 2011-06-01)

An experimental study was undertaken to compare the differences between municipal solid waste (MSW) derived solid recovered fuel (SRF) (complying with CEN standards) and refuse derived fuel (RDF). Both fuels were ...

Concurrent combustion of biomass and municipal solid waste

Laryea-Goldsmith, Rene (Cranfield University, 2010-09-30)

This PhD research project is primarily an investigation of the gaseous pollutant emissions arising from concurrent combustion of biomass and municipal solid wastes materials, using a fluidized bed combustor. Of the wide ...

Degradation of Environmental Protection Coatings for Gas Turbine Materials

Nalin, Laura (Cranfield University, 2008-12)

Nowadays, problems of component materials reliability in gas and oil-fired gas turbines focus on assessing the potential behaviour of commonly employed coatings, in order to avoid expensive and unpredictable failure in ...

Deposition onto heat exchanger surfaces from the co-firing of coal and biomass

Legrave, Nigel A (Cranfield University, 2011-12)

In the latter part of the 20th century, there has been a continuing global concern of the consumption of fossil fuels used in power production. There is further concern of the gaseous emissions that are created from ...

Development of a techno-economic framework for life extension decision making of safety critical installations

Shafiee, Mahmood; Animah, Isaac; Simms, Nigel J. (Elsevier, 2016-09-22)

One of the major decisions in management of the industrial assets is to ensure the feasibility of life extension process for safety critical components when they reach end-of-life. Most of the existing life extension ...

Development of novel coatings to resist fireside corrosion in biomass-fired power plants

Orlicka, Dominika (Cranfield University, 2016-07)

The emission of CO2 to the atmosphere from firing conventional fossil fuels has become a major concern for the power industry, due to the enhanced greenhouse effect and global warming predictions. The increasing ...

Development of on-line FTIR spectroscopy for siloxane detection in biogas to enhance carbon contactor management

Hepburn, Caroline; Vale, P.; Brown, A. S.; Simms, Nigel J.; McAdam, Ewan J. (Elsevier, 2015-04-04)

Activated carbon filters are used to limit engine damage by siloxanes when biogas is utilised to provide electricity. However, carbon filter siloxane removal performance is poorly understood as until recently, it had not ...

Effect of co-firing coal and biomass blends on the gaseous environments and ash deposition during pilot-scale oxy-combustion trials

Jurado Pontes, Nelia; Simms, Nigel J.; Anthony, Edward J.; Oakley, John (Elsevier, 2017-02-20)

This paper presents the experimental results from co-firing blends of El Cerrejon (EC) coal and cereal co-product (CCP) using several ratios (100/0; 75/25; 50/50; 0/100 (w/w)) under air- and oxy-firing conditions, in a ...

Effect of stress state and simultaneous hot corrosion on the crack propagation and fatigue life of single crystal superalloy CMSX-4

Brooking, Laurie; Gray, Simon; Sumner, Joy; Nicholls, John R.; Marchant, G.; Simms, Nigel J. (Elsevier, 2018-05-03)

Operating conditions within industrial gas turbines are changing in response to pressures to reduce environmental impact and enable use of renewable sources. This is driving an increase in the operational temperatures and ...

Browsing by Author "Simms, Nigel J."

Browsing by Author "Simms, Nigel J."

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