ORCID Profile
0000-0001-7923-6857
Current Organisation
University of Western Australia
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In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Organic Chemistry | Colloid and Surface Chemistry | Chemical Engineering | Materials Engineering Not Elsewhere Classified | Geochronology | Chemical Thermodynamics And Energetics | Geology | Geochemistry | Organic Green Chemistry | Organic Chemical Synthesis | Carbon Capture Engineering (excl. Sequestration) | Heat And Mass Transfer Operations | Membrane and Separation Technologies | Alloy Materials | Physical Organic Chemistry | Resources Engineering and Extractive Metallurgy not elsewhere classified | Nanomaterials | Nanotechnology | Ore Deposit Petrology | Materials Engineering | Geochemistry not elsewhere classified | Electrochemical energy storage and conversion | Water Resources Engineering | Solid State Chemistry | Physical Chemistry (Incl. Structural) | Environmental Technologies | Nanoscale Characterisation | Industrial Chemistry | Plant Cell and Molecular Biology | Chemical Engineering Design | Carbon sequestration science |
Organic industrial chemicals not classified elsewhere | Expanding Knowledge in the Chemical Sciences | Expanding Knowledge in the Biological Sciences | Physical sciences | Alumina production | Oil and Gas Extraction | Coal Mining and Extraction | Renewable energy not elsewhere classified (e.g. geothermal) | Manufactured products not elsewhere classified | Energy storage | Energy transformation | Gas—conversion to liquid fuels | Expanding Knowledge in Technology | Geothermal Energy | Industrial chemicals and related products |
Publisher: AIP Publishing
Date: 05-05-2004
DOI: 10.1063/1.1738939
Abstract: We unambiguously identify and derive the irreversibilities and entropy fluxes of the quantum and classical processes that intrinsically limit the performance of thermionic and tunneling chillers. The fundamental tradeoff between cooling flux and efficiency can then be evaluated, including the ramifications for feasible cooling regimes. Quantitative illustrations are provided for real solid-state devices. We cast these results as trajectories in the temperature-entropy plane and unify the thermodynamic perspective of these quantum chillers with that of conventional cooling cycles.
Publisher: Hindawi Limited
Date: 11-08-2021
DOI: 10.1002/ER.7133
Publisher: Elsevier BV
Date: 12-2002
Publisher: American Concrete Institute
Date: 2001
DOI: 10.14359/10202
Publisher: AIP Publishing
Date: 15-02-1998
DOI: 10.1063/1.366983
Abstract: The thermodynamic behavior of conventional chillers (generalized air conditioning and refrigeration systems) is acutely sensitive to internal dissipation. Previous chiller analyses have excluded entropy production in the evaporator and condenser heat exchangers, on the assumption of its being negligible. With experimental measurements from a commercial chiller, we demonstrate that heat exchanger internal dissipation is not inconsequential, and that ignoring its contribution can lead to substantial errors in chiller diagnostics and in the prediction of chiller performance curves. To evaluate the impact of this dissipation on chiller efficiency, one needs to define a proper process average temperature (PAT). In addition to discussing the fundamental significance of the correct PAT, we will show that earlier conventional definitions of PAT, where internal irreversibilities in chiller heat exchangers have been overlooked, result in inaccurate and sometimes unphysical predictions.
Publisher: Elsevier BV
Date: 09-2001
Publisher: Elsevier BV
Date: 11-2001
Publisher: Elsevier BV
Date: 07-2006
Publisher: AIP Publishing
Date: 07-2000
DOI: 10.1063/1.373679
Abstract: This article develops the theoretical foundation for the temperature–entropy (T–s) diagram for irreversible absorption chillers that employ either a volatile or nonvolatile working pair. The representation of a real absorption refrigeration cycle on a T–s diagram can directly depict the energetic superiority of one design over another. For practical usage, this diagrammatic approach only requires as inputs the inlet and outlet state points that can be computed based on the corresponding temperatures, pressures, and component concentrations of each of the heat-and-mass exchanger modules within a chiller system and can therefore also be employed as a useful tool for system analysis and diagnosis. The same method is also applicable to any continuously operating thermodynamic system that is wholly or partially driven by thermal power.
Publisher: American Chemical Society (ACS)
Date: 10-03-2010
DOI: 10.1021/JE900959W
Publisher: Elsevier BV
Date: 05-2016
Publisher: Elsevier BV
Date: 05-2002
Publisher: Springer Berlin Heidelberg
Date: 2014
Publisher: Elsevier BV
Date: 06-2015
Publisher: Elsevier BV
Date: 11-2000
Publisher: Elsevier BV
Date: 12-2018
Publisher: Elsevier BV
Date: 12-2010
Publisher: IOP Publishing
Date: 21-06-1998
Publisher: The Royal Society
Date: 13-01-2010
Abstract: We present an application of entropy production as an abstraction tool for complex processes in geodynamics. Geodynamic theories are generally based on the principle of maximum dissipation being equivalent to the maximum entropy production. This represents a restriction of the second law of thermodynamics to its upper bound. In this paper, starting from the equation of motion, the first law of thermodynamics and decomposition of the entropy into reversible and irreversible terms, 1 we come up with an entropy balance equation in an integral form. We propose that the extrema of this equation give upper and lower bounds that can be used to constrain geodynamics solutions. This procedure represents an extension of the classical limit analysis theory of continuum mechanics, which considers only stress and strain rates. The new approach, however, extends the analysis to temperature-dependent problems where thermal feedbacks can play a significant role. We apply the proposed procedure to a simple convective/conductive heat transfer problem such as in a planetary system. The results show that it is not necessary to have a detailed knowledge of the material parameters inside the planet to derive upper and lower bounds for self-driven heat transfer processes. The analysis can be refined by considering precise dissipation processes such as plasticity and viscous creep.
Publisher: Elsevier BV
Date: 09-2000
Publisher: WORLD SCIENTIFIC
Date: 20-11-2017
Publisher: Elsevier BV
Date: 07-2023
Publisher: Elsevier BV
Date: 2012
Publisher: Elsevier BV
Date: 10-2002
Publisher: Elsevier BV
Date: 05-1997
Publisher: Springer Science and Business Media LLC
Date: 10-07-2007
Publisher: AIP Publishing
Date: 05-2001
DOI: 10.1063/1.1360697
Abstract: This article presents a general thermodynamic framework for the temperature-entropy (T-s) diagram of batchwise operating thermodynamic cooling cycles. Our approach is fully consistent with the rigor of classical thermodynamics and captures accurately characteristics of cyclic-steady-state performance of a batchwise operating cooling cycle. The Eulerian viewpoint is adopted to allow for a time invariant description of such a cycle on a T-s plane, and this results in the formation of close loops at all internal energy storage components and their connection(s).
Publisher: Elsevier BV
Date: 09-2010
Publisher: American Chemical Society (ACS)
Date: 26-06-2002
DOI: 10.1021/JE0255067
Publisher: Elsevier BV
Date: 1994
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3CC41647J
Abstract: Aqueous based controlled decoration of platinum nanoparticles on plasma treated carbon nano-onions (CNOs) occurs within the shear flow generated by a vortex fluidic device (VFD), using ascorbic acid as the reducing agent, with the electrocatalytic potential of the resulting Pt-NPs@CNOs nano-composites demonstrated.
Publisher: Elsevier BV
Date: 02-2017
Publisher: Elsevier BV
Date: 06-2015
Publisher: American Vacuum Society
Date: 05-2009
DOI: 10.1116/1.3117354
Abstract: An integrated bake/chill thermal processing module is developed and experimentally evaluated to achieve spatial temperature uniformity of a silicon wafer throughout the entire processing temperature cycle of r , hold, and quench in lithography. The module uses a set of thermoelectric devices which are used to provide distributed heating and cooling to the substrate for uniformity and transient temperature control. The experimental results demonstrate that the wafer spatial temperature uniformity is within ±0.3 and ±0.1°C during transient and steady-state thermal processing, respectively.
Publisher: Elsevier BV
Date: 11-2012
Publisher: American Chemical Society (ACS)
Date: 20-03-2013
DOI: 10.1021/IE3017434
Publisher: Elsevier BV
Date: 11-2007
Publisher: Elsevier BV
Date: 09-2023
Publisher: Elsevier BV
Date: 12-2002
Publisher: SAGE Publications
Date: 11-1994
DOI: 10.1243/PIME_PROC_1994_208_045_02
Abstract: A thermodynamic model with a novel method of describing the performances of centrifugal chillers for air-conditioning is presented. It is based on the first and second laws of thermodynamics which captures the overall entropy change due to non-isentropic compression and expansion of the thermodynamic cycle. The model gives the fundamental relation between the coefficient of performance (COP) and the cooling rates (Q e ) for (a) the modulating and (b) the throttling actions of the inlet guide-vanes of the compressor. The usefulness and the accuracy of the model are demonstrated here by analysing the in situ performance of two commercial, installed centrifugal chillers of an air-conditioning plant as well as comparing the available performance data of another chiller in the literature.
Publisher: Elsevier BV
Date: 11-2015
Publisher: Elsevier BV
Date: 07-1996
Publisher: Elsevier BV
Date: 05-1997
Publisher: Elsevier BV
Date: 12-2003
Publisher: Elsevier BV
Date: 03-2001
Publisher: Elsevier BV
Date: 10-2016
Publisher: IEEE
Date: 2005
Publisher: SPIE
Date: 14-03-2008
DOI: 10.1117/12.772719
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2CC35017C
Abstract: Size selective growth of palladium nano-particles 2-7 nm in diameter on the surface of carbon nano-onions (CNOs) (derived from catalytic cracking of methane) in water involves pretreating the CNOs with p-phosphonic acid calix[8]arene then H(2)PdCl(4) followed by dynamic thin film processing under hydrogen in a vortex fluidic device.
Publisher: Elsevier BV
Date: 09-2000
Publisher: American Chemical Society (ACS)
Date: 14-04-2014
DOI: 10.1021/JP410873V
Publisher: Springer Science and Business Media LLC
Date: 30-01-2015
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C4NJ01378F
Abstract: Well dispersed platinum nanoparticles (∼2 nm) on carbon nano-onions are accessible using a simple and scalable one-step batch method.
Publisher: Elsevier BV
Date: 12-2002
Publisher: Elsevier BV
Date: 02-2007
Publisher: Elsevier BV
Date: 04-2009
Publisher: Elsevier BV
Date: 07-2017
Publisher: Springer Science and Business Media LLC
Date: 02-2017
Publisher: Elsevier BV
Date: 10-2008
Publisher: World Scientific Pub Co Pte Lt
Date: 08-2005
DOI: 10.1142/S0219581X05003723
Abstract: The paper presents the fabrication of nanotips cold-end contact for microcooling system. The fabrication process is based on an optimized isotropic plasma etching in SF 6 / O 2 using an ICP-deep RIE system from STS. We managed to fabricate the radius of the nanotips which are below 50 nm.
Publisher: Elsevier BV
Date: 02-2016
Publisher: Elsevier BV
Date: 02-2002
Publisher: SAGE Publications
Date: 11-1997
Abstract: This paper investigates the robustness of a diagnostic model for the performance evaluation of reciprocating chillers. The model, which is described by three adjustable parameters of the chiller, is verified by experimental results with three purpose-built system configurations. It is found that the model is both flexible and accurate with respect to changes in the system layout and the predictions of chiller coefficients of performance (COP) are well within the experimental uncertainties.
Publisher: American Scientific Publishers
Date: 07-2020
Abstract: We have successfully enhanced the performance of commercial supercapacitors that use Japan Kuraray 80F activated carbon and Super-P conductive carbon black as the conductive agent with reduced graphene oxide (rGO) additive. The ratios of conductive carbon black to rGO studied are 3:1, 5:1, 10:1, 15:1 and 1:0. The enhancement is most pronounced at 15:1, and the specific capacitance being 137.5 F g −1 , which is a 23.8% improvement over the 1:0 control. The specific capacitance retention is 70.1% after 10000 cycles. The impedance resistance is also reduced to 1.5 Ω, which is 3.3 times lower than the 1:0 control. Additionally, the rGO additive does not alter the favorable pore size distribution of the primary matrix and successfully preserves its small mesoporous structure, which facilitates facile transport of electrolyte.
Publisher: Elsevier BV
Date: 03-2014
Publisher: Elsevier BV
Date: 10-2021
Publisher: IOP Publishing
Date: 23-07-2013
DOI: 10.1088/0957-4484/24/33/335603
Abstract: We report a reasonably high yield (~50%) synthesis of silicon carbide (SiC) nanowires from silicon oxides and carbon in vacuum, by novel solar and l photothermal ablation methods that obviate the need for catalysis, and allow relatively short reaction times (~10 min) in a nominally one-step process that does not involve toxic reagents. The one-dimensional core/shell β-SiC/SiOx nanostructures-characterized by SEM, TEM, HRTEM, SAED, XRD and EDS-are typically several microns long, with core and outer diameters of about 10 and 30 nm, respectively. HRTEM revealed additional distinctive nanoscale structures that also shed light on the formation pathways.
Publisher: Elsevier BV
Date: 02-2004
Publisher: Springer International Publishing
Date: 2023
Publisher: Elsevier BV
Date: 05-1997
Publisher: Elsevier BV
Date: 11-2019
Publisher: Elsevier BV
Date: 08-2019
Publisher: EDP Sciences
Date: 2014
DOI: 10.1051/SMDO/2013010
Abstract: Geothermal heat is a sustainable form of alternative energy, commonly associated with the production of electricity along tectonic plate boundaries and in volcanically active zones. Outside of these special regions however it is rare to find a geothermal gradient high enough to achieve pay back on projects for generating electricity. On the other hand regions containing sedimentary aquifers are far more common and these aquifers frequently have a sufficiently high temperature gradient to make direct use of the thermal energy attractive. Meanwhile highly permeable aquifers occurring at shallow depths are possible sources for cooling water or can be both heat sources and sinks when used in combination with heat pumps. We provide a case study for the use of thermally driven absorption chillers on the University of Western Australia c us in Perth and discuss two ongoing projects: one for the heating and cooling of the offices of the Australian Resources Research Council using a reversible heat pump and the other the climate control of the planned Australian International Gravitational Observatory.
Publisher: American Physical Society (APS)
Date: 10-05-2002
Publisher: Springer Science and Business Media LLC
Date: 10-12-2011
Publisher: AIP Publishing
Date: 17-05-2004
DOI: 10.1063/1.1773179
Publisher: Springer Science and Business Media LLC
Date: 12-12-2019
Publisher: EDP Sciences
Date: 2014
DOI: 10.1051/SMDO/2013007
Abstract: Low-grade heat driven multi-effect distillation (MED) desalination is a very promising environmentally friendly, low emission technology. Many countries, such as Australia, are water short and conventional desalination technology is energy intensive. If a primary fossil fuel source is used, then desalination will significantly contribute to carbon dioxide emission. Low-grade waste heat from process plants and power plants generate minimal additional carbon dioxide. This source of energy is typically abundant at a temperature around 65–90 °C, which dovetails with MED technology. In this paper, we report on a new MED technology that couples perfectly with low grade waste heat to give at least a 25% freshwater yield improvement compared with conventional MED design. Typical applications and their expected improvement will also be reported.
Publisher: Wiley
Date: 05-07-2011
Abstract: Energy production by using hydrogen gas as a feedstock is considered to be one of the keys to creating clean energy, with the proviso that the gas is generated in a sustainable way with no emissions. A simple, self-sustaining process generating hydrogen gas from methane using inexpensive stainless steel wire-mesh catalysts at elevated temperatures (800 °C) is reported. A theoretical analysis of the production of electricity by this process revealed peak chain energy efficiencies up to 21% (emission free) when using a percentage of the produced hydrogen (approximately 40% of purified yield) as the heat source. In addition, a practical method has been developed to purify the carbon byproduct, affording essentially pure highly graphitic spheroidal carbon for advanced materials applications.
Publisher: Elsevier BV
Date: 05-1999
Publisher: Elsevier BV
Date: 05-1995
Publisher: SPIE-Intl Soc Optical Eng
Date: 2004
DOI: 10.1117/1.1626126
Publisher: Elsevier BV
Date: 12-2021
Publisher: IEEE
Date: 2005
Publisher: Elsevier BV
Date: 03-1997
Publisher: Elsevier BV
Date: 02-2006
Publisher: Elsevier BV
Date: 11-2002
Publisher: Elsevier BV
Date: 05-2008
Publisher: ETA-Florence Renewable Energies
Date: 2013
Publisher: IEEE
Date: 2007
Publisher: Elsevier BV
Date: 08-1998
Publisher: SPIE
Date: 16-03-2007
DOI: 10.1117/12.711688
Publisher: Informa UK Limited
Date: 05-1999
Publisher: Elsevier BV
Date: 10-2014
Publisher: Elsevier BV
Date: 04-2015
Publisher: Elsevier BV
Date: 12-2011
Publisher: Elsevier BV
Date: 06-2015
Publisher: American Chemical Society (ACS)
Date: 14-02-2003
DOI: 10.1021/LA0267140
Publisher: SPIE
Date: 10-03-2006
DOI: 10.1117/12.654331
Publisher: IEEE
Date: 2001
Publisher: Hindawi Limited
Date: 2015
DOI: 10.1155/2015/634347
Abstract: Adsorption chiller technology is one of the effective means to convert waste thermal energy into effective cooling, which substantially improves energy efficiency and lowers environmental pollution. This paper uses an improved lump-parameter design model to theoretically and experimentally evaluate the efficacy of the passive heat recovery scheme as applied to a four-bed adsorption chiller. Results show that the model can accurately track the experimental temporal system outlet temperatures. The performance predictions from this model compare favourably with experimental results. At rated temperature conditions and over a wide range of cycle times, both the cooling capacity and COP can be predicted to within 12.5%. The analyses indicate that the model can be used confidently as a design tool for a four-bed adsorption chiller and the passive heat recovery scheme can effectively improve the system performance.
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C2CP41756A
Abstract: A method for predicting the isosteric heat of gas adsorption on solid materials is developed which requires the measurement of a single isotherm - where previous methods, such as the Clausius-Clapeyron approach, require either multiple isotherms or complex calorimetric measurement. The Tóth potential function, stemming from the Polanyi potential function, is evaluated using the Langmuir and Tóth isotherm equations to generate new equations for the isosteric heat. These new isosteric heat equations share common parameters with the isotherm equations and are determined from isotherm fitting. This method is demonstrated in the literature for gas adsorption onto solid adsorbates including zeolites of various surface charge character and non-porous rutile phase titanium dioxide. Predictions are made using the new isosteric heat equations and then compared to calorimetric data.
Publisher: Elsevier BV
Date: 12-2007
Publisher: AIP Publishing
Date: 15-01-1999
DOI: 10.1063/1.369247
Abstract: The thermodynamic performance of real irreversible cooling and refrigeration systems (chillers) can be summarized in simple rectangular temperature-entropy diagrams, in analogy to classic pedagogical ex les for idealized reversible devices. The key to translating complex dissipative losses into this graphical framework is the process average temperature—a factor that can be calculated from nonintrusive experimental measurements, for converting entropy production into lost work. An uncomplicated thermodynamic model is used to transform the governing chiller performance equations into an easily-interpreted graph. Ex les based upon actual data from commercial work-driven (reciprocating) and heat-driven (absorption) chillers are presented, and are used to highlight the predominance of internal dissipation in determining chiller efficiency. With the thermodynamic diagram representation, the relative roles of each irreversibility source, as well as the reversible and endoreversible limits, become transparent.
Publisher: Trans Tech Publications, Ltd.
Date: 08-2009
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.79-82.585
Abstract: The catalytic cracking of methane to produce COx free hydrogen and a spectrum of advanced carbon nano materials was studied. Over several genres of catalysts by cracking of undiluted methane we produced hydrogen and highly graphitic carbon nanotubes (single-, thin- and multi-walled), straight microfibers, nano onions over the solid oxides solution, perovskite structured mixed oxides and mesoporous supported catalysts. The influences of reaction temperature on the methane conversion over various catalysts were investigated. The yields of carbon materials were monitored during the cracking running and the results indicated that these series of catalysts are promising for the commercialization of carbon nanotubes, microfibers and microballs.
Publisher: Elsevier BV
Date: 11-2003
Publisher: Elsevier BV
Date: 08-2005
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3CC47354F
Abstract: A high flux bright light-driven high temperature spinning disc processor affords carbon nanofibres within minutes and with controlled length.
Publisher: Elsevier BV
Date: 02-2007
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2015
Start Date: 2009
End Date: 12-2009
Amount: $150,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 04-2009
End Date: 07-2010
Amount: $800,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 07-2011
End Date: 12-2013
Amount: $140,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 07-2013
End Date: 04-2014
Amount: $670,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2019
End Date: 12-2020
Amount: $380,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2008
End Date: 12-2009
Amount: $220,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 03-2024
End Date: 02-2031
Amount: $35,000,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 12-2006
End Date: 12-2010
Amount: $295,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 04-2012
End Date: 03-2015
Amount: $370,000.00
Funder: Australian Research Council
View Funded Activity