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Title: Durable solar mirror films

Abstract

The present disclosure generally relates to durable solar mirror films, methods of making durable solar mirror films, and constructions including durable solar mirror films. In one embodiment, the present disclosure relates to a solar mirror film comprising: a multilayer optical film layer including having a coefficient of hygroscopic expansion of less than about 30 ppm per percent relative humidity; and a reflective layer having a coefficient of hygroscopic expansion.

Inventors:
; ; ; ; ; ;
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1343757
Patent Number(s):
9,568,653
Application Number:
14/398,485
Assignee:
3M INNOVATIVE PROPERTIES COMPANY NREL
DOE Contract Number:
AC36-08GO28308
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Apr 22
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE

Citation Formats

O'Neill, Mark B., Henderson, Andrew J., Hebrink, Timothy J., Katare, Rajesh K., Jing, Naiyong, North, Diane, and Peterson, Eric M. Durable solar mirror films. United States: N. p., 2017. Web.
O'Neill, Mark B., Henderson, Andrew J., Hebrink, Timothy J., Katare, Rajesh K., Jing, Naiyong, North, Diane, & Peterson, Eric M. Durable solar mirror films. United States.
O'Neill, Mark B., Henderson, Andrew J., Hebrink, Timothy J., Katare, Rajesh K., Jing, Naiyong, North, Diane, and Peterson, Eric M. Tue . "Durable solar mirror films". United States. doi:. https://www.osti.gov/servlets/purl/1343757.
@article{osti_1343757,
title = {Durable solar mirror films},
author = {O'Neill, Mark B. and Henderson, Andrew J. and Hebrink, Timothy J. and Katare, Rajesh K. and Jing, Naiyong and North, Diane and Peterson, Eric M.},
abstractNote = {The present disclosure generally relates to durable solar mirror films, methods of making durable solar mirror films, and constructions including durable solar mirror films. In one embodiment, the present disclosure relates to a solar mirror film comprising: a multilayer optical film layer including having a coefficient of hygroscopic expansion of less than about 30 ppm per percent relative humidity; and a reflective layer having a coefficient of hygroscopic expansion.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 14 00:00:00 EST 2017},
month = {Tue Feb 14 00:00:00 EST 2017}
}

Patent:

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  • A metallized polymer mirror construction having improved durability against delamination and tunneling, comprising: an outer layer of polymeric material; a metal oxide layer underlying the outer layer of polymeric material; a silver reflective layer underneath the metal oxide layer; and a layer of adhesive attaching the silver layer to a substrate.
  • A corrosion and ultra violet-resistant silver mirror for use in solar reflectors; the silver layer having a film-forming protective polymer bonded thereto, and a protective shield overlay comprising a transparent multipolymer film that incorporates a UV absorber. The corrosion and ultraviolet resistant silver mirror retains spectral hemispherical reflectance and high optical clarity throughout the UV and visible spectrum when used in solar reflectors.
  • A durable highly reflective silver mirror characterized by high reflectance in a broad spectral range of about 300 nm in the UV to the far infrared (.about.10000 nm), as well as exceptional environmental durability. A high absorptivity metal underlayer is used which prevents the formation of a galvanic cell with a silver layer while increasing the reflectance of the silver layer. Environmentally durable overcoat layers are provided to enhance mechanical and chemical durability and protect the silver layer from corrosion and tarnishing, for use in a wide variety of surroundings or climates, including harsh or extreme environments.
  • A metallized polymer mirror construction is disclosed having improved durability against delamination and tunneling, comprising: an outer layer of polymeric material; a metal oxide layer underlying the outer layer of polymeric material; a silver reflective layer underneath the metal oxide layer; and a layer of adhesive attaching the silver layer to a substrate. 6 figs.
  • The present invention relates to a concave mirror composed of a plurality of planar facets. According to the invention, all the facets are identical and the two dimensions of said facets are such that the square root of their product is at least approximately equal to the ratio of the focal distance of the mirror and of the square root of the rate of concentration of the mirror. The invention finds application in the concentration of solar energy in solar generators.