Heating a gas to over 1,000°C with concentrated sunlight can enable advanced high-performance applications such as solar-driven combined cycles and solar thermo-chemical processes. Solar receivers using volumetric porous absorbers are intended to produce the ‘volumetric effect’ leading to reduced heat loss and high absorber efficiency. However, experiments on volumetric absorbers have not shown this effect, and the absorbers’ efficiency is usually in the range of 70–80% rather than the desirable range of over 90%. Several porous structure geometries, including the well-known ceramic honeycomb and ceramic foam, were investigated with a numerical model. The results show that even optimal configurations still fall short of the desired range of absorber efficiency. A new candidate structure, a dense wire mesh, was investigated and compared to the conventional absorbers. The volumetric convection coefficient was also measured experimentally to provide validation of the single report found in the literature for this structure. An attractive solution with high efficiency of 90% was found for a dense wire mesh with pore diameter of 1 mm and porosity of 0.83. This geometry seems then a promising candidate for future volumetric absorbers.
Skip Nav Destination
ASME 2017 Heat Transfer Summer Conference
July 9–12, 2017
Bellevue, Washington, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-5788-5
PROCEEDINGS PAPER
Dense Wire Mesh as a High-Efficiency Solar Volumetric Absorber
Maya Livshits,
Maya Livshits
Tel Aviv University, Tel Aviv, Israel
Search for other works by this author on:
Lior Avivi,
Lior Avivi
Tel Aviv University, Tel Aviv, Israel
Search for other works by this author on:
Abraham Kribus
Abraham Kribus
Tel Aviv University, Tel Aviv, Israel
Search for other works by this author on:
Maya Livshits
Tel Aviv University, Tel Aviv, Israel
Lior Avivi
Tel Aviv University, Tel Aviv, Israel
Abraham Kribus
Tel Aviv University, Tel Aviv, Israel
Paper No:
HT2017-5080, V001T09A011; 8 pages
Published Online:
October 18, 2017
Citation
Livshits, M, Avivi, L, & Kribus, A. "Dense Wire Mesh as a High-Efficiency Solar Volumetric Absorber." Proceedings of the ASME 2017 Heat Transfer Summer Conference. Volume 1: Aerospace Heat Transfer; Computational Heat Transfer; Education; Environmental Heat Transfer; Fire and Combustion Systems; Gas Turbine Heat Transfer; Heat Transfer in Electronic Equipment; Heat Transfer in Energy Systems. Bellevue, Washington, USA. July 9–12, 2017. V001T09A011. ASME. https://doi.org/10.1115/HT2017-5080
Download citation file:
16
Views
Related Proceedings Papers
Related Articles
A Local Thermal Nonequilibrium Analysis of Silicon Carbide Ceramic Foam as a Solar Volumetric Receiver
J. Sol. Energy Eng (May,2012)
New Model of a Basin-Type Solar Still
J. Sol. Energy Eng (August,2002)
Tomography-Based Heat and Mass Transfer Characterization of Reticulate Porous Ceramics for High-Temperature Processing
J. Heat Transfer (February,2010)
Related Chapters
The Special Characteristics of Closed-Cycle Gas Turbines
Closed-Cycle Gas Turbines: Operating Experience and Future Potential
Completing the Picture
Air Engines: The History, Science, and Reality of the Perfect Engine
Future Solar Energy Applications
Solar Energy Applications