https://nova.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:33519 Wed 14 Nov 2018 14:00:23 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:18751 Wed 11 Apr 2018 15:10:45 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:25467 Wed 11 Apr 2018 11:56:06 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:15502 Wed 11 Apr 2018 10:04:17 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:47890 Wed 06 Mar 2024 15:27:37 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:55238 Wed 01 May 2024 15:41:08 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:32403 -1. The deposition prediction indicates that coal dust particles (50-212 µm) could be deposited in the VAM capture duct within 55 m to 217 m depending on the particles size, particle velocity. MIE tests for three size ranges of coal dust particles were undertaken. Results showed that the MIE of coal dust particles in the 0-74 µm size range, ignited in a range of 100-300 mJ. However, for the coal dust particles in the size range from 74-125 µm and 125-212 µm the MIE measured was in the range of 300-1000 mJ. The ignition coal dust concentration was varied between 150 g.m^-3 to 1500 g.m^-3 for the tests.]]> Thu 31 May 2018 09:12:19 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:32404 Thu 31 May 2018 09:12:12 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:34921 R using an indirect-fired absorption chiller while 780 kW_R was produced via a direct-fired absorption chiller. Assuming a total ventilation air flow rate of 300 m³/s, fifteen 20 m³/s modules would be required, producing a total of up to 11,700 kW_R of cooling. The net power produced was zero between reactor temperatures of 500 and 700 °C at the investigated steam pressures (2.0–7.0 bar). Excess net power was produced at reactor temperatures greater than 700 °C due to the restriction of the inlet VAM temperature to 600 °C (to prevent auto-ignition of the methane upstream of the reactor). At low reactor temperatures the steam flow rate decreased with both reactor temperature and steam pressure but remained constant at reactor temperatures of 750 and 800 °C. The methane abatement plant would be able to operate without an external power supply through the utilisation of the process heat. The plant would produce adequate cooling for a typical gassy underground coal mine in Australia. Such mines are located in the Bowen Basin of Queensland; a region characterised by high virgin rock temperatures with cooling requirements of up to 7000 kW_R.]]> Thu 11 May 2023 13:15:08 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:18747 Sat 24 Mar 2018 08:02:48 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:30647 50), and moisture content, impact on the MAIT. For coal dust concentrations less than 1000 g.m⁻³, the MAIT decreases with increasing coal dust concentrations. On the other hand, for low concentrations of 100 to 15 g.m⁻³, the MAIT becomes more reliable for particle size D₅₀ rather than for volatile matters.]]> Sat 24 Mar 2018 07:33:22 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:23115 (v) or D₂O_(v) respectively, the rate of reaction decreases significantly in the presence of a high concentration of water vapour (ca 12,000 ppm) but the overall rate ratio, CH₄ / H₂O_(v) vs CD₄ / D₂O_(v) increases only slightly, to 3.2 ±0.6. This suggests that the effect of water vapour on the reaction rate is attributable to an equilibrium isotope effect (EIE) but under all reaction conditions studied at 270 °C, the rate limiting step involves methane activation.]]> Sat 24 Mar 2018 07:15:30 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:24953 Sat 24 Mar 2018 07:14:18 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:22729 Sat 24 Mar 2018 07:12:25 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:32222 Mon 23 Sep 2019 11:52:02 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:36498 Fri 22 May 2020 15:46:02 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:41067 2-equivalent) which was about 4.0% of Australia's national greenhouse gas emissions. Therefore, an optimised process of heat recovery from a fluidised-bed VAM abatement reactor, to produce power and cooling was studied. For a ventilation flow rate of 20 m³/s, the minimum methane concentration for a direct gas turbine was 0.45 vol. % at a reactor temperature of 630°C and compressor pressure of 1.5 bar. An indirect gas turbine process operated with a minimum methane concentration was 0.4 vol. % at a reactor temperature of 630°C, compressor pressure of 4.0 bar and turbine flow rate of 2.2 kg/s.]]> Fri 22 Jul 2022 15:47:19 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:51081 Fri 18 Aug 2023 09:32:00 AEST ]]>