Priestman, Geoffrey - University of Sheffield - Department of Chemical and Biological Engineering

个人简介

BScTech, PhD, CEng, MIChemE I gained a first class honours degree in Chemical Engineering and Fuel Technology from Sheffield University and was appointed an Academic Research Assistant whilst studying for my PhD investigating instabilities in distillation systems for ICI. I then became a Research Fellow in a small research team funded by BNFL and UKAEA working on power fluidics aimed at developing new fluid handling components and systems for the nuclear industry, culminating in many of the fluid handling and ventilation systems in the Thermal Oxide Reprocessing Plant (THORP) at Sellafield. I became a lecturer in the Department in 1990, being promoted to senior lecturer in 1995. During this time I continued work on power fluidics, focusing on applications relating to oil and gas production. Between 1996 and 2000 I was the founding head of the Process Fluidics Research Group. Formerly the Director of Student Support, Director of Teaching.

研究领域

I have an established international research record working on power fluidics. My early work was aimed at developing new fluid handling components and systems for the nuclear industry. This work formed the basis of technology transfer agreements between UKAEA/BNFL and Japan and the USA. Much of the fluid handling and ventilation systems (inc. 250 fluidic pumps) in the $5.4 billion Thermal Oxide Reprocessing Plant (THORP) at Sellafield was based on the original work done at Sheffield. There is ongoing impact of this research with applications in nuclear waste handling in the US and UK, also current fuel reprocessing research in China is based on our original concepts. Various forms of fluidic switch were developed as part of this work, including flow diverters and pneumatic controllers. Further work included applications of fluidic switches to multiphase flow control (BP, EPSRC), F-duct design (F1 team) and metering within the oil and gas industry, as well as development of a fluidic level control system (Industry, EPSRC) with International Patent rights secured and sold. Further impact in the nuclear industry of work at Fluidics work at Sheffield is in the latest North Korean APR1400 nuclear Reactors reactors which incorporate fluidic safety valves derived directly our work. The valve improves both the reliability and performance in the event of loss of coolant to the reactor core. The first of advanced reactors are currently coming on line in South Korea. I also carried out significant development work with BP on the development of novel sandwash systems for primary oil-gas separators. This work has had significant global impact. The systems were initially applied within the Forties field and are now used globally by BP as one of their standard designs including at Milne Point in Prudhoe Bay. A system is also being incorporated into the current $30billion Chevron Wheatstone LNG development in Australia. Further research includes development of a novel rotating spiral contactor for which the University was granted a European patent and which has been demonstrated to offer significant potential for fluid separations at the micro-scale. It offers unique potential for compact, low inventory and rapid mass transfer operations, including potential for operation in a gravity-free environment. I have also worked on other aspects of microfluidics and flow metering including a new concept in micro-channel fluid contactor-separator. Further work on separation systems includes application of membranes in thermochemical cycles for hydrogen production as part of a major EU funded project which demonstrated that dewatering membranes can significantly improve the efficiency of thermochemical cycles for massive hydrogen production. Current research is primarily being done in conjunction with Rolls Royce and is aimed at developing fluidic control valves for applications within their Trent Engines. This work has been ongoing for several years and a US patent has recently been granted. It promises significant fuel savings and the technology has been built into engine designs due to enter service over the next five years. A recently awarded EPSRC grant in conjunction with University of Oxford is aimed at making significant new advances in this work. Research interests Power Fluidics Micro-chemical Engineering Multiphase flow transport and separation Early printed Minton pottery

近期论文

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MacInnes JM, Pitt MJ, Priestman GH & Allen RWK (2012) Analysis of two-phase contacting in a rotating spiral channel. Chemical Engineering Science, 69(1), 304-315. Atkin I, Elder RH, Priestman GH, Sinclair DC & Allen RWK (2011) High temperature oxygen separation for the sulphur family of thermochemical cycles - part I: Membrane selection and flux testing. International Journal of Hydrogen Energy, 36(17), 10614-10625. MacInnes JM, Ortiz-Osorio J, Jordan PJ, Priestman GH & Allen RWK (2010) Experimental demonstration of rotating spiral microchannel distillation. CHEM ENG J, 159(1-3), 159-169. Elder RH, Priestman GH & Allen RWK (2009) Dewatering of HIx solutions by pervaporation through Nafion (R) membranes. INT J HYDROGEN ENERG, 34(15), 6129-6136. Scanion T, Wilson P, Priestman G & Tippetts J (2009) Development of a novel flow control device for limiting the efflux of air through a failed pipe. Proceedings of the ASME Turbo Expo, 3(PART B), 1217-1227. Wang JY & Priestman GH (2009) Flow simulation in a complex fluidics using three turbulence models and unstructured grids. INT J NUMER METHOD H, 19(3-4), 484-500. Elder RH, Priestman GH, Allen RWK, Orme CJ & Stewart FF (2009) The feasibility of membrane separations in the HIx processing section of the sulphur iodine thermochemical cycle. International Journal of Hydrogen Energy, 34(16), 6614-6624. Chan TY, Priestman GH, MacInnes JM & Allen RWK (2008) Development of a micro-channel contactor-separator for immiscible liquids. CHEM ENG RES DES, 86(A1),