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Title: NREL Comparison Between Absolute Cavity Pyrgeometers and Pyrgeometers Traceable to World Infrared Standard Group and the InfraRed Integrating Sphere

Abstract

The comparison of the Absolute Cavity Pyrgeometers (ACPs) Comparison with a PIR Pyrgeometer Traceable to the World Infrared Standard Group (WISG) and a Kipp & Zonen (KZ) pyrgeometer traceable to the InfraRed Integrating Sphere Radiometer (IRIS) was held during the NREL Pyrheliometer Comparison (NPC-2018) from September 24 to October 5, 2018. Data from all instruments was collected during night time clear sky conditions only. The irradiance measured by the ACPs and the PIR pyrgeometer traceable to the WISG were collected every 10 seconds during the ACPs self-calibration and every 30 seconds during the measurement runs. The measurement runs were for two hours while the calibration runs were for 6 minutes. The irradiance measured by the Kipp & Zonen pyrgeometer was collected every 30 seconds. During the comparison the average (av) irradiance difference measured by three ACPs varied from 0.2 W/m 2 to -0.5 W/m 2, with a standard deviation (sd) from 0.5 W/m 2 to 0.8 W/m 2. The average irradiance difference measured by the three ACPs minus the irradiance measured by the PIR is 4.3 W/m 2 and sd 4.2 W/m 2, and that of measured irradiance by the KZ is 2.3 W/m 2 and sd 3.5 W/m 2.

Authors:
 [1];  [1]; ORCiD logo [1];  [2];  [2]
  1. National Renewable Energy Laboratory (NREL), Golden, CO (United States)
  2. Physikalisch-Meteorologisches Observatorium Davos/World Radiation Center (PMOD/WRC) (Switzerland)
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S); Atmospheric Radiation Measurement (ARM) Research Facility
OSTI Identifier:
1480239
Report Number(s):
NREL/TP-1900-72633
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 24 POWER TRANSMISSION AND DISTRIBUTION; absolute cavity pyrgeometer; InfraRed integrating sphere; ACP; IRIS; pyrgeometer; PIR; Kipp & Zonnen; longwave irradiance

Citation Formats

Reda, Ibrahim M., Dooraghi, Michael R., Andreas, Afshin M., Grobner, Julian, and Thomann, Christian. NREL Comparison Between Absolute Cavity Pyrgeometers and Pyrgeometers Traceable to World Infrared Standard Group and the InfraRed Integrating Sphere. United States: N. p., 2018. Web. doi:10.2172/1480239.
Reda, Ibrahim M., Dooraghi, Michael R., Andreas, Afshin M., Grobner, Julian, & Thomann, Christian. NREL Comparison Between Absolute Cavity Pyrgeometers and Pyrgeometers Traceable to World Infrared Standard Group and the InfraRed Integrating Sphere. United States. doi:10.2172/1480239.
Reda, Ibrahim M., Dooraghi, Michael R., Andreas, Afshin M., Grobner, Julian, and Thomann, Christian. Thu . "NREL Comparison Between Absolute Cavity Pyrgeometers and Pyrgeometers Traceable to World Infrared Standard Group and the InfraRed Integrating Sphere". United States. doi:10.2172/1480239. https://www.osti.gov/servlets/purl/1480239.
@article{osti_1480239,
title = {NREL Comparison Between Absolute Cavity Pyrgeometers and Pyrgeometers Traceable to World Infrared Standard Group and the InfraRed Integrating Sphere},
author = {Reda, Ibrahim M. and Dooraghi, Michael R. and Andreas, Afshin M. and Grobner, Julian and Thomann, Christian},
abstractNote = {The comparison of the Absolute Cavity Pyrgeometers (ACPs) Comparison with a PIR Pyrgeometer Traceable to the World Infrared Standard Group (WISG) and a Kipp & Zonen (KZ) pyrgeometer traceable to the InfraRed Integrating Sphere Radiometer (IRIS) was held during the NREL Pyrheliometer Comparison (NPC-2018) from September 24 to October 5, 2018. Data from all instruments was collected during night time clear sky conditions only. The irradiance measured by the ACPs and the PIR pyrgeometer traceable to the WISG were collected every 10 seconds during the ACPs self-calibration and every 30 seconds during the measurement runs. The measurement runs were for two hours while the calibration runs were for 6 minutes. The irradiance measured by the Kipp & Zonen pyrgeometer was collected every 30 seconds. During the comparison the average (av) irradiance difference measured by three ACPs varied from 0.2 W/m2 to -0.5 W/m2, with a standard deviation (sd) from 0.5 W/m2 to 0.8 W/m2. The average irradiance difference measured by the three ACPs minus the irradiance measured by the PIR is 4.3 W/m2 and sd 4.2 W/m2, and that of measured irradiance by the KZ is 2.3 W/m2 and sd 3.5 W/m2.},
doi = {10.2172/1480239},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {10}
}

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