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您的检索式：作者名="Greg Perkins"
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| 1 | A O-dimensional cavity growth submodel for use in reactor models of underground coal gasification显示文摘Modelling of the underground coal gasification process is dependent upon a range of sub-models. One of the most important is the calculation of the cavity growth rate as a function of various operating conditions and coal properties. While detailed 1-dimensional models of coal block gasification are available, it is not easy to couple them directly with reactor models, which aim to simulate the complete process. In this paper, a O-dimensional cavity growth sub-model is presented. The model is based on the concept of a surface reaction and incorporates physics to account for moisture evaporation, water influx, coal pyrolysis, coal thermo-mechanical fragmentation and the build up of an ash layer on the char. The model is validated using measurements from laboratory experiments on coal cores and coal blocks. A comparison of calculated results from several UCG field trials shows that the model can provide good estimates of cavity growth rate for reasonable input parameters. Finally, simulation results of cavity growth in the combustion and gasification zones as a function of the bulk gas temperature, gas pressure, water influx rate, ash layer thickness and coal fragmentation behaviour are presented. | Greg Perkins | 2019 | International Journal of Coal Science & Technology2019，6，3： | 2 |
| 2 | IMRT for adjuvant radiation in gastric cancer: A preferred plan?显示文摘 | Jolie Ringash Greg Perkins James Brierley Gina Lockwood Mohammad Islam Pamela Catton Bernard Cummings John Kim Rebecca Wong Laura Dawson | 2005 | International Journal of Radiation Oncology, Biology, Physics2005，，： | 1 |
| 3 | Integration of biocrude production from fast pyrolysis of biomass with solar PV for dispatchable electricity production显示文摘This article analyses the integration of distributed biocrude production facilities using fast pyrolysis with solar photovoltaic(PV)for dispatchable electricity production.The strong growth of intermittent electricity generation from solar PV and wind is leading to a greater need for energy storage at grid scale and dynamic demand management.Various forms of energy storage,including electrochemical(e.g.batteries),mechanical(e.g.flywheels)and gravitational(e.g.pumped-hydro),are being developed.This work studies the issues of integrating fast pyrolysis of biomass to produce biocrude that can be readily stored in tanks and combusted to produce electricity when required to supplement the electricity generation from a solar PV unit to meet an arbitrary energy demand curve.The use of biomass pyrolysis in this application has a range of benefits,including the flexibility to augment intermittent renewables,the integration of more bioenergy into the electricity sector and the creation of commercial quantities of biocrudes that can be refined into renewable transport fuels such as jet fuel for which few other alternatives exist.Biocrudes,especially partially upgraded,can be stored and used when required in engines and gas turbines,making them a suitable fuel for augmenting the intermittent nature of solar and wind projects.The development of the distributed 100%renewable power stations using a mix of biomass/biocrude and solar PV and/or wind would also increase the certainty of supply,knowledge of quality and price of raw biocrudes that can also be used to supply a centralized biorefinery,thereby substantially reducing the risk of investing in new biorefinery capacity. | Greg Perkins | 2018 | Clean Energy2018，2，2： | 1 |
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