Secondary reflectors for solar collectors and methods of making the same

Zhu, Guangdong

Secondary reflectors for solar collectors and methods of making the same

Patent · Tue May 09 00:00:00 EDT 2023

OSTI ID:1998356

Zhu, Guangdong

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.

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

Sponsoring Organization:: USDOE

DOE Contract Number:: AC36-08GO28308

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

Patent Number(s):: 11,644,219

Application Number:: 16/984,254

OSTI ID:: 1998356

Country of Publication:: United States

Language:: English

References (6)

Solar linear Fresnel collector using molten nitrates as heat transfer fluid Grena, Roberto; Tarquini, Pietro Energy, Vol. 36, Issue 2 https://doi.org/10.1016/j.energy.2010.12.003	journal	February 2011
Thermal performance of linear Fresnel reflecting solar concentrator with trapezoidal cavity absorbers Singh, Panna Lal; Sarviya, R. M.; Bhagoria, J. L. Applied Energy, Vol. 87, Issue 2 https://doi.org/10.1016/j.apenergy.2009.08.019	journal	February 2010
Technical note Singh, P. L.; Ganesan, S.; Yàdav, G. C. Renewable Energy, Vol. 18, Issue 3 https://doi.org/10.1016/S0960-1481(98)00805-2	journal	November 1999
New adaptive method to optimize the secondary reflector of linear Fresnel collectors Zhu, Guangdong Solar Energy, Vol. 144 https://doi.org/10.1016/j.solener.2017.01.005	journal	March 2017
Line-focusing concentrating solar collector-based power plants: a review Desai, Nishith B.; Bandyopadhyay, Santanu Clean Technologies and Environmental Policy, Vol. 19, Issue 1 https://doi.org/10.1007/s10098-016-1238-4	journal	June 2016
An experimental and computational study of the heat loss characteristics of a trapezoidal cavity absorber Reynolds, D. J.; Jance, M. J.; Behnia, M. Solar Energy, Vol. 76, Issue 1-3 https://doi.org/10.1016/j.solener.2003.01.001	journal	January 2004

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