Diffuse irradiance is a fundamental component in solar resource considerations. Diffuse irradiance can be accurately determined by calculation from global and beam normal (direct) measurements. However, beam solar measurements can be expensive and therefore shadow bands are often used along with pyranometers to mask the solar disk. The errors that result from the use shadow bands are well known and have been studied by numerous authors. The thrust of this article is to examine four recognized correction techniques for correcting shadow band based diffuse irradiance and statistically evaluate their individual performances using data collected in Almerı´a, Spain. Almerı´a is located in southern Spain and has a healthy solar irradiation budget.
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e-mail: gabriel.lopez@dfaie.uhu.es
e-mail: T.Muneer@napier.ac.uk
e-mail: R.Claywell@napier.ac.uk
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Comparative Study of Four Shadow Band Diffuse Irradiance Correction Algorithms for Almerı´a, Spain
G. Lo´pez,
e-mail: gabriel.lopez@dfaie.uhu.es
G. Lo´pez
Department Ingenierı´a Ele´ctrica y Te´rmica, EPS La Ra´bida, Universidad de Huelva, Ctra. Palos de la Frontera s/n., Huelva (Spain)
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T. Muneer,
e-mail: T.Muneer@napier.ac.uk
T. Muneer
School of Engineering, Napier University, 10 Colinton Road, Edinburgh EH10 5DT, UK
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R. Claywell
e-mail: R.Claywell@napier.ac.uk
R. Claywell
School of Engineering, Napier University, 10 Colinton Road, Edinburgh EH10 5DT, UK
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G. Lo´pez
Department Ingenierı´a Ele´ctrica y Te´rmica, EPS La Ra´bida, Universidad de Huelva, Ctra. Palos de la Frontera s/n., Huelva (Spain)
e-mail: gabriel.lopez@dfaie.uhu.es
T. Muneer
School of Engineering, Napier University, 10 Colinton Road, Edinburgh EH10 5DT, UK
e-mail: T.Muneer@napier.ac.uk
R. Claywell
School of Engineering, Napier University, 10 Colinton Road, Edinburgh EH10 5DT, UK
e-mail: R.Claywell@napier.ac.uk
Contributed by the Solar Energy Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF SOLAR ENERGY ENGINEERING. Manuscript received by the ASME Solar Energy Division, Jan. 2003, final revision, Oct. 2003. Associate Editor: A. Walker.
J. Sol. Energy Eng. May 2004, 126(2): 696-701 (6 pages)
Published Online: May 4, 2004
Article history
Received:
January 1, 2003
Revised:
October 1, 2003
Online:
May 4, 2004
Citation
Lo´pez, G., Muneer, T., and Claywell, R. (May 4, 2004). "Comparative Study of Four Shadow Band Diffuse Irradiance Correction Algorithms for Almerı´a, Spain ." ASME. J. Sol. Energy Eng. May 2004; 126(2): 696–701. https://doi.org/10.1115/1.1666895
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