https://ogma.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:49011 Wed 03 May 2023 12:24:44 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:19130 Tue 24 Aug 2021 14:29:11 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:36243 Tue 17 Mar 2020 13:42:30 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:33569 Tue 01 Oct 2019 16:14:24 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39804 Thu 23 Jun 2022 15:58:16 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:38733 Thu 20 Jan 2022 14:25:01 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:31513 Sat 24 Mar 2018 08:44:17 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:10819 Sat 24 Mar 2018 08:13:37 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:10884 Sat 24 Mar 2018 08:11:33 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:10283 Sat 24 Mar 2018 08:09:10 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:20837 Sat 24 Mar 2018 08:05:57 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:19015 Sat 24 Mar 2018 08:05:28 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:17892 Sat 24 Mar 2018 07:56:26 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:20673 Sat 24 Mar 2018 07:55:38 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:20579 Sat 24 Mar 2018 07:55:31 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:27709 Sat 24 Mar 2018 07:40:09 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:28496 Sat 24 Mar 2018 07:29:17 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26545 Sat 24 Mar 2018 07:26:09 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:27493 Sat 24 Mar 2018 07:25:39 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24402 Sat 24 Mar 2018 07:14:27 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24088 Sat 24 Mar 2018 07:11:46 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:32956 -3) spherical glass beads particles of diameter 3, 5 and 8 mm and water as fluidising medium with different particle mass ratios varying from 0.17 to 6.0. In the expanded bed, both segregated and intermixed zones were observed depending on the different particle diameter combinations. In a completely segregated SLFB, the bottom monosized layer exhibited a negative deviation ~23% whereas a positive deviation ~25% was found in the top monosized layer when compared with the corresponding pure monosized system. A small mixing zone spanning approximately two particle diameters thick was observed to exist even in a completely segregated SLFB for higher diameter ratio cases. A slight decrease in the mixing zone height was noted with increasing liquid superficial velocity. For lower diameter ratio cases, a relatively lager mixing zone height was observed which increased with increasing liquid superficial velocity. The bed expansion ratio was noted to decrease with increasing solid mass ratio however it increased with increase in the fluidising velocity ratio following a reasonable power law trend. The expanded bed height of the binary mixture was not entirely additive of its corresponding mono-component bed heights and both positive and negative deviations were observed. Finally, a two-dimensional (2D) Eulerian-Eulerian (E-E) model incorporating the kinetic theory of granular flow (KTGF) was used to quantify the binary system hydrodynamics. The model predicted expanded bed height agreed with experimental measurements within ±6% deviation. Presence of a mixing zone was also confirmed by the CFD model and simulated particle phase volume fraction distribution qualitatively agreed with the experimental visualisations.]]> Sat 06 Jul 2024 14:56:03 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30858 Mon 12 Apr 2021 15:42:21 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:34734 0.5Sr_0.5Co_0.8Fe_0.2O_3−δ (LSCF5582) membranes prepared at sintering temperatures of 1200–1300 °C, with the aim of gaining an insight into their performance in the surface reaction limited regime for oxygen separation applications. The findings of this work are then compared with our experimental data on Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3−δ (BSCF5582) membranes. It is demonstrated that the adsorption rate constants of both membranes are two orders of magnitude greater than their respective oxygen desorption rate constants as the oxygen adsorption occurs in less than 24 s whilst the oxygen desorption takes approximately one hour to reach equilibrium. The activation energy for oxygen adsorption of LSCF5582 reduced to a quarter of its value with increasing the sintering temperature from 1200 °C to 1300 °C. This is attributed to the oxygen exchange occurring more rapidly along the grain boundaries resulting in a lower activation energy. The LSCF5582 grain sintered at 1200 °C is the optimum selection for oxygen separation applications at an operating temperature of 850 °C and oxygen partial pressure of 0.21 bar.]]> Fri 31 May 2019 12:54:50 AEST ]]>