Standard Skies Classification Using Common Climatic Parameters

[+] Author and Article Information
Danny H. W. Li, Chris C. S. Lau, Joseph C. Lam

Building Energy Research Group, Department of Building and Construction, City University of Hong Kong, Kowloon, Hong Kong, China

J. Sol. Energy Eng 126(3), 957-964 (Jul 19, 2004) (8 pages) doi:10.1115/1.1740776 History: Received February 01, 2003; Revised January 01, 2004; Online July 19, 2004
Copyright © 2004 by ASME
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Escuyer,  S., and Fontoynont,  M., 2001, “Lighting Controls: A Field Study of Office Workers’ Reactions,” Lighting Research and Technology, 33(2), pp. 77–96.
Li,  D. H. W., Lam,  J. C., and Wong,  S. L., 2002, “Daylighting and its Implications to Overall Thermal Transfer Value (OTTV) Determinations,” Energy–The International Journal, 27(11), pp. 991–1008.
Moon,  P., and Spencer,  D. E., 1942, “Illumination from a Non-uniform Sky,” Illum. Eng. (N.Y.), 37(10), pp. 707–726.
Littlefair,  P. J., 1994, “A Comparison of Sky Luminance Models with Measured Data from Garston, United Kingdom,” Sol. Energy, 53(4), pp. 315–322.
Perez,  R., Seals,  R., and ,  Seals,  R., 1993, “All-weather Model for Sky Luminance Distribution–Preliminary Configuration and Validation,” Sol. Energy, 50(3), pp. 235–245.
Kittler, R., Darula, S., and Perez, R., 1997, “A New Generation of Sky Standards,” Proceedings of the LUX Europa Conference, Amsterdam, pp. 359–373.
Bartzokas,  A., Darula,  S., Kambezidis,  H. D., and Kittler,  R., 2003, “Sky Luminance Distribution in Central Europe and the Mediterranean Area During the Winter Period,” J. Atmos. Sol.-Terr. Phys., 65(1), pp. 113–119.
Tregenza,  P. R., 1999, “Standard Skies for Maritime Climates,” Lighting Research and Technology, 32(3), pp. 97–106.
Li,  D. H. W., Lau,  C. C. S., and Lam,  J. C., 2003, “A Study of 15 Sky Luminance Patterns Against Hong Kong Data,” Architectural Science Review, 46(1), pp. 61–68.
Darula, S., Kittler, R., and Kmeto, P., 2001, “New CIE General Sky Defining Luminance Distributions,” Proceedings of the Sustainable Building & Solar Energy 2001 Conference, Brno, Czech Republic, pp. 52–54.
CIE S 011/E:2003, “Spatial Distribution of Daylight–CIE Standard General Sky,” Standard, CIE Central Bureau, Vienna.
Li,  D. H. W., and Lam,  J. C., 2001, “An Analysis of Climatic Parameters and Sky Condition Classification,” Build. Environ., 36(4), pp. 435–445.
Erhorn, H., and Szerman, M., 1994, “Documentation of the Software Package ADELINE (9 volumes),” Stuttgart.
DOE-2., 1993, “DOE-2 Supplement Version 2.1E,” Lawrence Berkeley Laboratory, University of California, CA.
Li,  D. H. W., Lam,  J. C., and Lau,  C. C. S., 2002, “A Study of Solar Radiation Daylight Illuminance and Sky Luminance Data Measurement for Hong Kong,” Architectural Science Review, 45(1), pp. 21–30.
Kittler,  R., Darula,  S., and Perez,  R., “Advantages of New Sky Standards: More Realistic Modeling of Daylight Conditions in Energy and Environmental Studies,” International Journal of Energy, Environment and Economics, 8(1), pp. 65–71.
Littlefair, P. J., 1994, “The Luminance Distributions of Clear and Quasi-clear Skies,” Proceedings of the CIBSE National Lighting Conference, Cambridge, UK, pp. 267–283.
Kittler,  R., Perez,  R., and Darula,  S., 1997, “Sky Classification Respecting Energy-Efficient Lighting, Glare and Control Needs,” J. Illum. Eng. Soc., 26(winter), pp. 57–68.
Kambezidis,  H. D., Oilonomou,  T., and Zevgolis,  D., 2002, “Daylight Climatology in the Athens Urban Environment: Guidance for Building Designers,” Lighting Research and Technology, 34(4), pp. 297–312.
Karayel,  M., Navvab,  M., Ne’eman,  E., and Selkowitz,  S., “Zenith Luminance and Sky Luminance Distributions for Daylighting Calculations,” Energy Build., 6(3), pp. 283–291.
Harrison,  A. W., 1991, “Directional Sky Luminance vs Cloud Cover and Solar Position,” Sol. Energy, 46(1), pp. 13–19.
Lam,  J. C., and Li,  D. H. W., 1996, “Luminous Efficacy of Daylight Under Different Sky Conditions,” Energy Convers. Manage., 37(12), pp. 1703–1711.
Iqbal, M., 1983 An Introduction to Solar Radiation, Academic Press, Toronto, Canada.
Lau, S. Y., 1989, “Global Solar Radiation in Hong Kong,” Technical Note No. 81, Royal Observatory Hong Kong, Hong Kong.
Lam,  J. C., and Li,  D. H. W., 1996, “Correlation between Global Solar Radiation and its Direct and Diffuse Components,” Build. Environ., 31(6), pp. 527–535.
Ruiz,  E., Soler,  A., and Robledo,  L., 2001, “Assessment of Muneer’s Luminous Efficacy Models in Madrid and a Proposal for New Models Based on his Approach,” J. Sol. Energy Eng., 123(3), pp. 220–224.
Li,  D. H. W., and Lam,  J. C., 2001, “Analysis of Solar Heat Gain Factors Using Sky Clearness Index and Energy Implications,” Energy Convers. Manage., 42(5), pp. 555–571.
Li,  D. H. W., and Lam,  J. C., 2001, “Development of Solar Heat Gain Factors Database Using Meteorological Data,” Build. Environ., 36(4), pp. 469–483.
Ibañez,  M., Beckman,  W. A., and Klein,  S. A., 2002, “Frequency Distributions for Hourly and Daily Clearness Indices,” J. Sol. Energy Eng., 124(1), pp. 28–33.
Muneer,  T., Gul,  M. S., and Kubie,  L., 2000, “Models for Estimating Solar Radiation and Illuminance from Meteorological Parameters,” J. Sol. Energy Eng., 122(3), pp. 146–153.
Kittler,  R., and Darula,  S., 2002, “Parametric Definition of the Daylight Climate,” Renewable Energy, 26(2), pp. 177–187.


Grahic Jump Location
(a) Frequency distribution of best-fit 15 standard skies, and (b) RMSE of the luminance distribution of actual skies to the best-fit 15 standard distributions
Grahic Jump Location
(a) Frequency distribution of best-fit 3 standard skies, and (b) RMSE of the luminance distribution of actual skies to the best-fit 3 standard distributions
Grahic Jump Location
Frequency of occurrence of cloud cover based on sky nos. 1, 6 and 13
Grahic Jump Location
Frequency of occurrence of sunshine hour based on sky nos. 1, 6 and 13
Grahic Jump Location
Frequency of occurrence of Kt based on sky nos. 1, 6 and 13
Grahic Jump Location
Measurement points for the sky scanner



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