Comparative Runs Between the Eppley and a Pyrheliometer Having a Spherical Absorber

Miller, London

doi:10.1175/1520-0477-23.8.323

Search citation statements

Order By: Relevance

Paper Sections

Select...

According To Macdonald1

Citation Types

Supporting

Mentioning

Contrasting

Year Published

1945

1957

Publication Types

Select...

Article2

Relationship

Self Cite0

Independent2

Authors

Journals

Cited by 2 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Woertz and Hand [1941] have suggested that the deviation from a true cosine response character istic might be due to (a) sensing rings not mounted parallel, (b) irregularities in the black surface. Miller [1942] has suggested that (c) the dependence of the absorption of the lampblack on the angles of incidence might cause error. The latter appeared to be the major source of error in the experiments reported here, for visual observation of the black ened surface at various angles of incidence showed a highly specular reflectance (see Fig 4).…”

Section: According To Macdonaldmentioning

confidence: 99%

Laboratory investigation of some characteristics of the Eppley pyrheliometer

Fuquay¹,

Buettner

1957

Eos Trans. AGU

View full text Add to dashboard Cite

The pyranometer of Eppley shows the following deviations of its scale value: (1) The temperature coefficient consists of coefficients of the thermopile and of the different heat exchange parameters. (2) Air convection within the glass bulb causes a dependency of the scale value on the angle between the receiving surface and the direction of gravity. (3) Rays from below the instrument plane may be reflected by the glass ball onto the receiving surface. (4) The existing black paint has a specular reflection which causes a dependency on the angle of incidence. All deviations can be brought under control by suitable modification or calibration.

show abstract

Section: According To Macdonaldmentioning

confidence: 99%