A novel pyrheliometer of high accuracy

In this paper, analyses have been carried out for a novel blackbody model, which is made by employing a hemispheric mirror. It is calculated that the effective absorptance of the model can approach unity by correctly choosing the coatings and the geometric parameters. Based on the analyses, a new ty...

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Bibliographic Details
Published in:Solar energy 1987, Vol.39 (5), p.371-377
Main Authors: Zhang, Z.M., Ge, X.S., Wang, Y.F.
Format: Article
Language:English
Subjects:
Earth, ocean, space
Exact sciences and technology
External geophysics
Meteorology
Radiative transfer. Solar radiation
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Summary:In this paper, analyses have been carried out for a novel blackbody model, which is made by employing a hemispheric mirror. It is calculated that the effective absorptance of the model can approach unity by correctly choosing the coatings and the geometric parameters. Based on the analyses, a new type of absolute pyrheliometer was designed and constructed. The uncertainty of the device is indicated to be ±0.4%. Comparisons have been made with cavity-type pyrheliometers. The agreement is satisfactory. † Member of ISES.
ISSN:0038-092X
1471-1257
DOI:10.1016/S0038-092X(87)80055-5