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Fabrication of Self-cleaning CNT-Based Near-Perfect Solar Absorber Coating for Non-Evacuated Concentration Solar Panels Applications

Kumar Bera, Raj and Binyamin, Yaniv and Frantz, Cathy and Uhlig, Ralf and Magdassi, Shlomo and Mandler, Daniel (2020) Fabrication of Self-cleaning CNT-Based Near-Perfect Solar Absorber Coating for Non-Evacuated Concentration Solar Panels Applications. Energy Technology. Wiley. doi: 10.1002/ente.202000699. ISSN 2194-4288.

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Abstract

We demonstrated the broadband and near-perfect solar absorption of carbon nanotube (CNT) based black coating prepared by low-cost wet-deposition method on reflective metal surface for mid-temperature non-evacuated Concentrated Solar Power (CSP) application. The controlled density of CNTs in the ceramic matrix exhibits absorptance of 0.985 in the entire solar spectrum and emittance of 0.90 in IR region. The coating exhibits durable superhydrophilic property with 0° contact angle after plasma treatment without affecting the solar absorptance and excellent coating adhesion measured at 85-95% of the area. The efficiency of the coating was evaluated by analytical models and it reveals that the CNT-based coating shows higher efficiency at low temperature and at high concentration ratio than that of selective coatings.

Item URL in elib:https://elib.dlr.de/136604/
Document Type:Article
Title:Fabrication of Self-cleaning CNT-Based Near-Perfect Solar Absorber Coating for Non-Evacuated Concentration Solar Panels Applications
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Kumar Bera, RajInstitute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 9190401, IsraelUNSPECIFIED
Binyamin, YanivInstitute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 9190401, IsraelUNSPECIFIED
Frantz, Cathycathy.frantz (at) dlr.deUNSPECIFIED
Uhlig, RalfRalf.Uhlig (at) dlr.deUNSPECIFIED
Magdassi, Shlomomagdassi (at) mail.huji.ac.ilUNSPECIFIED
Mandler, Danieldaniel.mandler (at) mail.huji.ac.ilUNSPECIFIED
Date:2020
Journal or Publication Title:Energy Technology
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1002/ente.202000699
Publisher:Wiley
ISSN:2194-4288
Status:Published
Keywords:absorptance, carbon nanotubes, concentrated solar power, solar absorber, coatings, solar-thermal coatings
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Concentrating Solar Thermal Technology
DLR - Research area:Energy
DLR - Program:E SW - Solar and Wind Energy
DLR - Research theme (Project):E - Advanced Heat Transfer Media (old)
Location: Stuttgart
Institutes and Institutions:Institute of Solar Research > Solar High Temperature Technologies
Deposited By: Uhlig, Tamara
Deposited On:19 Oct 2020 10:25
Last Modified:21 Oct 2020 10:56

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