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Improved Method to Measure Glare and Reflected Solar Irradiance

Sandia National Laboratories

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Publications:

PDF Document PublicationMarket Sheet (767 KB)

Solar glare from aerial view
Solar glare from aerial view

Typical solar glare
Typical solar glare

Technology Marketing Summary

Sandia has developed a cheap, efficient, and accurate method of measuring the irradiance from solar reflections using a digital camera. Measurements of reflected solar irradiance is of great importance to industry, military, and government agencies to assess potential impacts of glint and glare from growing numbers of solar power installations around the world. In addition, this measurement technique can be used to monitor and maintain system performance for concentrating solar power applications.

Description

This disclosure also covers the development of a web-based tool that allows users to upload images of the sun and reflection to automatically calculate the irradiance distributions and the potential impact of glare. Current methods use moving wands which are more expensive and require more complex machinery and operating procedures.

Benefits
  • Significantly cheaper, faster, and easier to implement than current methods for measuring solar irradiance
  • Measurement technique can also be used to help monitor and maintain system performance for concentrating solar power applications
  • Can be coupled with a Sandia-developed web-based tool that will calculate the irradiance distributions and the potential impact of glare
Applications and Industries
  • Concentrated solar power
  • Electric utility
  • Photovoltaics
  • Public safety
Patents and Patent Applications
ID Number
Title and Abstract
Primary Lab
Date
Patent 9,103,719
Patent
9,103,719
Computation of glint, glare, and solar irradiance distribution
Described herein are technologies pertaining to computing the solar irradiance distribution on a surface of a receiver in a concentrating solar power system or glint/glare emitted from a reflective entity. At least one camera captures images of the Sun and the entity of interest, wherein the images have pluralities of pixels having respective pluralities of intensity values. Based upon the intensity values of the pixels in the respective images, the solar irradiance distribution on the surface of the entity or glint/glare corresponding to the entity is computed.
Sandia National Laboratories 08/11/2015
Issued
Technology Status
Technology IDDevelopment StageAvailabilityPublishedLast Updated
SD# 11722Development - Sandia estimates this technology’s TRL at level 9. The technology is in its final form and has been proven to work in its field of use under expected conditions.Available - Various license and partnering options are available. Please contact the Intellectual Property department to discuss.06/16/201103/12/2013

Contact SNL About This Technology

To: Technology Inquiries<ip@sandia.gov>