Completed Tasks
TASK 17 - MEASURING AND MODELLING
SPECTRAL RADIATION
DURATION: 1991 - 1994
OPERATING AGENT: Germany
» SCOPE
- Characterization of measurement instruments
- Data acquisition and evaluation
- Improvement and validation of models
The performance of solar materials, systems and buildings is influences not only by the total solar radiation but also by a certain spectral band of solar radiation or by its spectral distribution. Examples of technologies sensitive to spectral radiation are high performance glazings, daylighting systems, and PV modules.
Task 17 is addressing the need for more and better spectral radiation data for design and analysis purposes. Three types of data are included: narrow band spectral radiation, broad-band spectral radiation in the visible range, and broad-band spectral radiation in the infrared range.
Task participants are undertaking laboratory and field tests of various instruments to determine their performance, followed by reccommendations for calibration procedures and operation procedures. Improved instruments are being used to measure, compile and analyze needed spectral data, partly in support of the International Daylighting Measuring Programme. In addition, models for generating needed spectral radiation data from available meteorological data are being improved and validated.