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Efecto de la temperatura de operación en la calibración de pirheliómetros según ISO 9059
| Name: | Description: | Size: | Format: | |
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| 1.59 MB | Adobe PDF |
Advisor(s)
Abstract(s)
RESUMEN: La calibración de la sensibilidad S o responsividad de piranómetros y pirheliómetros, con trazabilidad a la WRR, se realiza mediante procedimientos sencillos descritos en las normas ISO 9847 e ISO 9059, entre otras, que permiten una medida de los sensores y de la irradiancia solar de forma homogénea y equivalente en todo el mundo. La demanda de medidas de irradiancia cada vez más precisas hace necesario mejorar los resultados y fiabilidad de las calibraciones y reducir su incertidumbre, tanto en la parte técnica como en los métodos de medida. En particular, este trabajo analiza la influencia de la temperatura de operación de los pirheliómetros en su sensibilidad y en la irradiancia directa calculada. En base a la experiencia en su calibración, se sugiere la aplicación del mismo método de corrección en S de pirheliómetros que el admitido para piranómetros (ISO 9847), mediante un coeficiente de temperatura lineal. Se muestra el resultado de la aplicación del método en ejemplos reales de calibración y se hacen algunas recomendaciones para fabricantes, sistemas de monitorización y laboratorios de ensayo.
ABSTRACT: Calibration of sensitivity S or responsivity of pyranometers and pyrheliometers, traceable to WRR, is performed through simple procedures described in ISO 9847 and ISO 9059 Standards, among others, allowing an homogeneous and equivalent measurement of sensors and of solar irradiance all around the world. The demand for measurements of solar irradiance of increased accuracy makes necessary an improvement on calibration results and reliability and on reducing their uncertainty, both in the technical aspects as in the design of measurement methods. In particular, this work analyzes the influence of operating temperature of pyrheliometers in their sensibility and in the direct irradiance calculated. Application of the same correction method for S as that used for pyranometers (ISO 9847), based on a linear temperature coefficient, is suggested here for pyrheliometers. Results of application of this method on real examples of calibration are shown. Recommendations for manufacturers, monitoring systems and test laboratories are also included.
ABSTRACT: Calibration of sensitivity S or responsivity of pyranometers and pyrheliometers, traceable to WRR, is performed through simple procedures described in ISO 9847 and ISO 9059 Standards, among others, allowing an homogeneous and equivalent measurement of sensors and of solar irradiance all around the world. The demand for measurements of solar irradiance of increased accuracy makes necessary an improvement on calibration results and reliability and on reducing their uncertainty, both in the technical aspects as in the design of measurement methods. In particular, this work analyzes the influence of operating temperature of pyrheliometers in their sensibility and in the direct irradiance calculated. Application of the same correction method for S as that used for pyranometers (ISO 9847), based on a linear temperature coefficient, is suggested here for pyrheliometers. Results of application of this method on real examples of calibration are shown. Recommendations for manufacturers, monitoring systems and test laboratories are also included.
Description
CIES2020 - XVII Congresso Ibérico e XIII Congresso Ibero-americano de Energia Solar
Keywords
Solar radiation Pyrheliometer Calibration Standardisation
Citation
Balenzategui, J.L... [et.al.] - Efecto de la temperatura de operación en la calibración de pirheliómetros según ISO 9059. In: CIES2020: As Energias Renováveis na Transição Energética: Livro de Comunicações do XVII Congresso Ibérico e XIII Congresso Ibero-americano de Energia Solar. Helder Gonçalves, Manuel Romero (Ed.). Lisboa, Portugal: LNEG, 3-5 Novembro, 2020, p. 943-950
Publisher
LNEG - Laboratório Nacional de Energia e Geologia