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Mathematical Modeling and Optimization of Vanadium-Titanium Black Ceramic Solar Collectors

Ding, D, He, W and Liu, Chunlu 2021, Mathematical Modeling and Optimization of Vanadium-Titanium Black Ceramic Solar Collectors, Energies, vol. 14, no. 3, pp. 1-20, doi: 10.3390/en14030618.

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Title Mathematical Modeling and Optimization of Vanadium-Titanium Black Ceramic Solar Collectors
Author(s) Ding, D
He, W
Liu, ChunluORCID iD for Liu, Chunlu orcid.org/0000-0003-1144-4355
Journal name Energies
Volume number 14
Issue number 3
Article ID 618
Start page 1
End page 20
Total pages 20
Publisher MDPI
Place of publication Basel, Switzerland
Publication date 2021
ISSN 1996-1073
Keyword(s) solar absorber
vanadium extraction
ceramic coating
mathematical model
Summary The vanadium-titanium black ceramic (VTBC) coating on all-ceramic solar collectors has both high absorptance (0.94) and high emissivity (90%). However, the thermal conductivity of ceramic is very low (1.256 W/mK). To improve the heat collection efficiency of VTBC solar collectors, this paper establishes a mathematical model based on the energy-conservation relationships under steady-state conditions and creates a corresponding computer program. Key parameters for VTBC solar collectors include the heat-removal factor, effective transmittance-absorptance product for the absorber, total heat loss coefficient, etc. Then, via experimental testing, this study proposes a reference model for domestic VTBC solar collectors in a cold location (η = 0.89 − 2.20Tm*). Last, this work analyzes the influences of fin design and transparent cover design on VTBC solar collectors individually, using the created computer program. Results show that the most effective optimization method is to increase the transmittance of the transparent cover. By increasing the transmittance from 0.93 to 0.96, this study creates an optimized VTBC solar collector theoretical model (η = 0.92 − 2.20Tm*).
Language eng
DOI 10.3390/en14030618
Indigenous content off
Field of Research 02 Physical Sciences
09 Engineering
HERDC Research category C1 Refereed article in a scholarly journal
Free to Read? Yes
Persistent URL http://hdl.handle.net/10536/DRO/DU:30147707

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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.