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https://hdl.handle.net/2440/123905
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Type: | Journal article |
Title: | Contactless thermal diagnostics of acoustically levitated biomass under uniform high flux radiation |
Author: | Zhao, W. Sun, Z. Alwahabi, Z.T. |
Citation: | Energy and Fuels, 2020; 34(1):530-534 |
Publisher: | ACS Publications |
Issue Date: | 2020 |
ISSN: | 0887-0624 1520-5029 |
Statement of Responsibility: | Wanxia Zhao, Zhiwei Sun, Zeyad T. Alwahabi |
Abstract: | This study reports a contactless optical system developed for investigating the fast-thermal processes of biomass under high-flux radiation, particularly for understanding the synergy of renewable biomass and concentrated solar energy. A biomass tablet was successfully suspended using a home-built acoustic levitator in a well-controlled oxygen-lean atmosphere and was irradiated under uniform radiation with a high flux of approximately 1 MW/m2, i.e., ∼1000 suns. The biomass temperature profile was spatio and temporally recorded using an infrared thermographic camera. Several key thermal parameters of the biomass were determined, including the time-resolved heating rate and the ignition temperature. Three different thermal processes were identified from the temperature profiles. These are an initial fast-heating process, a following slow-heating process, and a final biomass ignition depending on the flux of radiation. At high flux, these three processes are merged, and only a steep linear increase in temperature was observed. The contactless apparatus provides the high-fidelity data of the heating rates of biomass and can benefit the understanding of the fast-thermal process associated with biomass under high flux concentrated solar radiation. |
Rights: | © 2019 American Chemical Society. |
DOI: | 10.1021/acs.energyfuels.9b03367 |
Grant ID: | http://purl.org/au-research/grants/arc/LE130100127 http://purl.org/au-research/grants/arc/DP180102045 |
Published version: | http://dx.doi.org/10.1021/acs.energyfuels.9b03367 |
Appears in Collections: | Aurora harvest 4 Chemical Engineering publications |
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