Secondary reflectors for solar collectors and methods of making the same

Zhu, Guangdong

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Title: Secondary reflectors for solar collectors and methods of making the same

Abstract

A secondary reflector for receiving light from a plurality of primary reflectors that includes a reflecting surface having a length aligned along a first axis (z), where a cross-section of the reflecting surface in a plane perpendicular to the first axis (z) forms a curve comprising a concave section positioned between a first endpoint and a second endpoint, at least a portion of the concave section is accurately approximated by a polynomial equation, an aperture is formed by a straight line connecting the first endpoint to the second endpoint, and the concave section is configured to focus a plurality of beams of light passing through the aperture onto a focal point.

Inventors:: Zhu, Guangdong

Issue Date:: 2023-05-09

Research Org.:: National Renewable Energy Laboratory (NREL), Golden, CO (United States); California Energy Commission

Sponsoring Org.:: USDOE

OSTI Identifier:: 1998356

Patent Number(s):: 11644219

Application Number:: 16/984,254

Assignee:: Alliance for Sustainable Energy, LLC (Golden, CO)

DOE Contract Number:: AC36-08GO28308; EPC-14-047

Resource Type:: Patent

Resource Relation:: Patent File Date: 08/04/2020

Country of Publication:: United States

Language:: English

Citation Formats


                    Zhu, Guangdong. Secondary reflectors for solar collectors and methods of making the same.  United States: N. p., 2023. 
        Web.

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                    Zhu, Guangdong. Secondary reflectors for solar collectors and methods of making the same.  United States.

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                    Zhu, Guangdong. Tue .  
        "Secondary reflectors for solar collectors and methods of making the same".  United States.  https://www.osti.gov/servlets/purl/1998356.

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@article{osti_1998356,

  title        = {Secondary reflectors for solar collectors and methods of making the same},

  author       = {Zhu, Guangdong},

  abstractNote = {A secondary reflector for receiving light from a plurality of primary reflectors that includes a reflecting surface having a length aligned along a first axis (z), where a cross-section of the reflecting surface in a plane perpendicular to the first axis (z) forms a curve comprising a concave section positioned between a first endpoint and a second endpoint, at least a portion of the concave section is accurately approximated by a polynomial equation, an aperture is formed by a straight line connecting the first endpoint to the second endpoint, and the concave section is configured to focus a plurality of beams of light passing through the aperture onto a focal point.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2023},

  month        = {5}

}

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Works referenced in this record:

System and Method for Manipulating Solar Energy
patent-application, January 2017

Holman, Zachary C.; Angel, Roger; Wheelwright, Brian
US Patent Application 15/116442; 20170012155
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20170012155

Off-Axial Three-Mirror Optical System with Freeform Surfaces
patent-application, September 2015

Zhu, Jun; Yang, Tong; Jin, Guo-Fan
US Patent Application 14/571965; 20150253552
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20150253552

Off-Axial Three-Mirror Optical System with Freeform Surfaces
patent-application, September 2015

Zhu, Jun; Yang, Tong; Jin, Guo-Fan
US Patent Application 14/571952; 20150253553
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20150253553

Reflective Optical System and Astronomical Observation Device Using the Same
patent-application, September 2014

Katashiba, Yuji; Matsuda, Toru
US Patent Application 14/197074; 20140254003
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20140254003