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Radiometric Standards and Best Practices: Recent Progress

Conference ·
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International standards and best practices for solar resource assessments provide assurance for traceable measurements associated with a low uncertainty. This benefits the solar energy industry by reducing the investment risks through heightened confidence in the solar resource information. NREL, in collaboration with international organizations, such as subcommittees G03 of ASTM (Radiometry) and TC180/SC1 of ISO (Climate measurement and data), recently revised some standards that are widely used by the solar industry. These include radiometric standards that assist in (i) maintaining calibration traceability; (ii) uncertainty analysis; (iii) measurement quality assurance, and (iv) establishing reference spectral irradiance distributions. The latter are widely used by the solar community to evaluate the actual absorptance, reflectance, and transmittance of solar energy materials, or the performance of solar energy devices and systems, relative to standard conditions. This paper provides a summary of the recent changes brought to these standards as a way to better support the solar energy industry.
Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE National Renewable Energy Laboratory (NREL)
DOE Contract Number:
AC36-08GO28308
OSTI ID:
2305658
Report Number(s):
NREL/CP-5D00-88842; MainId:89621; UUID:1e9baae9-5805-44c5-8b00-c93f504e2c42; MainAdminId:71831
Country of Publication:
United States
Language:
English

References (6)

A reevaluation of the solar constant based on a 42-year total solar irradiance time series and a reconciliation of spaceborne observations journal July 2018
Standard Practice for Estimation of UV Irradiance Received by Field-Exposed Products as a Function of Location standard July 2021
Solar energy. Specification and classification of instruments for measuring hemispherical solar and direct solar radiation standard November 2018
Revised composite extraterrestrial spectrum based on recent solar irradiance observations journal July 2018
The SMARTS spectral irradiance model after 25 years: New developments and validation of reference spectra journal July 2019
Standard Solar Constant and Zero Air Mass Solar Spectral Irradiance Tables standard April 2014

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Related Subjects

SOLAR ENERGY
industries
measurement uncertainty
photovoltaic systems
reflectivity
solar energy
standards organizations
uncertainty