TITLE

Performance of empirical correlations for predicting monthly mean daily diffuse solar radiation values at Kampala, Uganda

AUTHOR(S)
Mubiru, J.; Banda, E. J. K. B.
PUB. DATE
March 2007
SOURCE
Theoretical & Applied Climatology;2007, Vol. 88 Issue 1/2, p127
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Existing literature lacks information on formulation and performance assessment of diffuse solar radiation models in the Eastern African region yet this region has a high potential for the utilization of solar energy. The objective of this paper is to assess the performance of seventeen diffuse solar irradiation empirical correlations, at Kampala, Uganda. The best performing correlations were determined using the ranking method. The normalized absolute mean bias error and root mean square error were computed and utilized in the ranking process. The results indicated that the correlations relating diffuse transmittance $(\bar{H}_d/\bar{H}_0)$ with relative sunshine duration $(\bar{S}/\bar{S}_0)$ are more reliable for diffuse solar radiation predictions at least in the Uganda environment. These models are expressed in terms of first, second and third order polynomials of the relative sunshine duration and are particularly recommended for their simplicity and worldwide applicability.
ACCESSION #
23616428

 

Related Articles

  • Growing demand for solar power also calls for new material designs. Gee, James // Laser Focus World;May2004, Vol. 40 Issue 5, p150 

    Delves into solar power. Discovery of the fact that crystalline silicon remains the dominant semiconductor material used for solar cells; Discussion of the material designs of a solar cell; Disadvantages of using a process and design with a screen-printed silver grid on the front surface of the...

  • A new formulation for solar irradiation and sunshine duration estimation. Şahin, Ahmet Duran // International Journal of Energy Research;Feb2007, Vol. 31 Issue 2, p109 

    In solar engineering and atmospheric sciences solar irradiation and sunshine duration estimations are very important for different problems. Classical approaches that based on Angström equation for estimating global solar irradiation in terms of sunshine duration are abundant in the...

  • Utility-Scale Solar Ramps Up. Morse, Frederick H. // Solar Today;Nov/Dec2006, Vol. 20 Issue 6, p22 

    The article focuses on utility-scale solar, a concentrating solar power (CSP) system in the U.S. Here, questions on why utility-scale solar is not growing at an impressive rate are discussed. One reason why utility-scale is not widely used because of its high cost. Another reason is the land...

  • Capturing the Sun.  // Governing;May2004, Vol. 17 Issue 8, p76 

    Provides data on the growth in grid-connected solar power capacity by megawatts per year from 1996 to 2002.

  • Product focus--Hot Water.  // Market: Latin America;Apr2006, Vol. 14 Issue 4, p2 

    Focuses on the market and economic potential of solar water heater in Latin America. Importance of sun as a source of energy; Comparison of the cost of water heated by sunlight and of water heated by electricity; Information on project in Brazil that aims to tap solar water heater.

  • Increase in Solar Thermal Energy Storage by using a Hybrid Energy Storage System. Zohoor, Hassan; Moosavi, Zaeem M. // International Journal of Mathematical, Physical, & Engineering S;2010, Vol. 4 Issue 1, p39 

    The intermittent nature of solar energy and the energy requirements of buildings necessitate the storage of thermal energy. In this paper a hybrid system of storing solar energy has been analyzed. Adding a LHS medium to a commercial solar water heater, the required energy for heating a small...

  • Estudio del Potencial de Radiaciòn Solar y de la Temperatura Ambiente en Lorica-Córdoba. Narvaez, J. R.; Dielman, G.; Gordillo, G. // Revista Colombiana de Física;2008, Vol. 40 Issue 2, p392 

    In this work, a station with facilities for measuring the global solar radiation and the room temperature was developed and implemented. The system for the acquisition and processing of data was developed using the virtual instrumentation concept and the package LabVIEW 7,1. The station was set...

  • YATAY YÃœZEYE GELEN ANLIK GLOBAL GÃœNEÅž IÅžINIMIN TAHMÄ°NÄ° İÇİN BASÄ°T BÄ°R HESAPLAMA METODU. Bakirci, Kadir // Isi Bilimi ve Teknigi Dergisi / Journal of Thermal Science & Tec;2009, Vol. 29 Issue 2, p53 

    In the design of systems running with solar energy, it is an important parameter that solar radiation data of a region is known. In the locations where no solar radiation data is available, this parameter can be determined by performing reasonable correlations. In this study, the instantaneous...

  • SOLAR STEAM GENERATING SYSTEM FOR COOKING. Gondkar, Vinod D.; Pangavhane, Dilip. R.; Gaikwad, R. W. // Journal of Solid Waste Technology & Management;Feb2010, Vol. 36 Issue 1, p44 

    India has a significant level of solar insolation over wide regions. The total solar energy received by our land mass annually is about 60×1013 MWH. There are between 250-300 days of useful sunshine per year in most parts of the country. Over 3000-3200 hours of bright sunshine are received...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics