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Proceedings Paper

Precision Insolation Measurement Under Field Conditions
Author(s): M. S. Reid; C. M. Berdahl; R. A. Gardner
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Paper Abstract

Interest and activity in solar energy as an alternative source of energy are rapidly increasing the world over, and this is likely to continue for years to come. No solar energy system, if it is to be efficient and economic, can be designed or constructed prior to detailed engineering study and a complete systems analysis. All such analytic work requires a detailed and accurate knowledge of insolation and other parameters. For efficient computer analysis these parameters should be expressed in the form of a probabilistic insolation model based on precision measured data over extended periods of time. Central solar station siting surveys also require accurate measured data, as do efficiency verifications and demand-load analyses. The present lack of accurate historic insolation is due mainly to the lack of precision insolation instrumentation for field work. This paper describes a precision insolation instrument developed for field survey work and for use as a calibration transfer standard. Two of these instruments have operated in the field for two years and a calibration stability analysis over this period of time is discussed.

Paper Details

Date Published: 15 February 1977
PDF: 3 pages
Proc. SPIE 0085, Solar Energy Utilization II, (15 February 1977); doi: 10.1117/12.954943
Show Author Affiliations
M. S. Reid, California Institute of Technology (United States)
C. M. Berdahl, California Institute of Technology (United States)
R. A. Gardner, California Institute of Technology (United States)


Published in SPIE Proceedings Vol. 0085:
Solar Energy Utilization II

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