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Spectrally Selective Coatings for Concentrated Solar Power Systems

Detailed Technology Description

University researchers have developed spectrally selective coatings (SSCs) with ultra-high optical performance and a highly scalable process to make them. The invention's SSCs exhibit the combined features of ultra-high solar absorptivity, low IR emissivity, low cost and high temperature durability. The SSC can be applied to the solar collector used in solar hot water panels, to the receiver of concentrated solar power systems for electricity generation and in tandem with a thermoelectric generator to capture heat from sunlight for conversion into electricity.

Supplementary Information

Inventor: JIN, Sungho | CHEN, Renkun | LIU, Zhaowei | KIM, Tae, Kyoung
Priority Number: WO2013166521A1
IPC Current: F24J000202 | G02B000500
Assignee Applicant: The Regents of the University of California
Title: SPECTRALLY SELECTIVE COATINGS FOR OPTICAL SURFACES | REVÊTEMENTS SPECTRALEMENT SÉLECTIFS POUR SURFACES OPTIQUES
Usefulness: SPECTRALLY SELECTIVE COATINGS FOR OPTICAL SURFACES | REVÊTEMENTS SPECTRALEMENT SÉLECTIFS POUR SURFACES OPTIQUES
Novelty: Spectrally selective coating for optical surfaces in solar thermal application, has composite material for forming coating for absorbing solar energy in selected spectrum and reflecting solar energy in another selected spectrum

Industry

Environmental/Green Technology

Sub Category

Solar Cell

Application No.

20150107582

Others

Intellectual Property Info

The technology is available for sponsorship and/or licensing.

Tech ID/UC Case

22392/2012-233-0

Related Cases

2012-233-0

*Abstract

Concentrated solar power and solar hot water systems convert sunlight to thermal energy (heat) by using solar absorbers. For efficient operation, the solar absorber has to effectively absorb the solar energy without emitting much of its own blackbody radiation. As most materials do not possess such features naturally, a spectrally selective coating (SSC) is usually needed. Ideally SSCs would possess: (a) high absorption (0.95) in the solar spectrum (0.3-1.5 microns); (b) low emissivity in the IR spectrum (1.5-2 microns) corresponding to the blackbody radiation of the surface temperature of the solar receiver; and, (c) excellent durability at elevated temperatures, preferably in air and with humidity. Further, the coating performance should not degrade significantly during the lifetime of a solar thermal system, and the coating and its adhesion to the substrate must have excellent thermal cyclability due to the intermittent nature of solar irradiation.

*IP Issue Date

Apr 23, 2015

*Principal Investigator

Name: Renkun Chen

Department:

Name: Sungho Jin

Department:

Name: Zhaowei Liu

Department:

Name: Tae Kyoung Kim

Department:

Country/Region

USA