ABSTRACT
This paper presents preliminary studies on the global solar radiation in a horizontal surface along with the prevailing meteorological conditions measured during the period 1999-2001 in Mbalmayo, Cameroon. Hourly, daily, and mean monthly values of global solar radiation and meteorological data were obtained from the International Institute of Tropical Agriculture automatic weather station of Mbalmayo. The data were processed as daily, hourly, sum of 10-day data for 8.00/12.00/16.00/20.00 hours, decadal hourly, decadal daily, and mean monthly data. The highest measured daily, decadal hourly, decadal daily, and mean monthly data for global solar radiation in Mbalmayo was found to be 29.7, 2.76, 21.8, and 20.1 MJm2, respectively. The highest hourly global solar radiation value up to 182.44 MJm2 was observed between March 21-31, 1999. Apart from the global solar radiation measurements, the main observed meteorological parameters were, soil temperature, temperature, wind speed, precipitation, and relative humidity. The results show that there exist seasonal tendencies in the variation of global solar radiation. The range of variation of these radiations and the distribution puts Mbalmayo has a high potential for solar energy utilization.
KEYWORDS
PAPER SUBMITTED: 2008-05-16
PAPER REVISED: 2008-08-28
PAPER ACCEPTED: 2008-09-12
THERMAL SCIENCE YEAR
2009, VOLUME
13, ISSUE
Issue 4, PAGES [207 - 211]
- Massaquoi, J. G. M., Global Solar Radiation in Sierra Leone (West Africa), Solar Wind Technol., 5 (1988), 1, pp. 281-283
- Ibrahim, S. M. A., Predicted and Measured Global Solar Radiation in Egypt, Solar Energy, 35 (1985), 1, pp. 185-188
- Nguyen, B. T., Pryor, T. L., The Relationship between Global Solar Radiation and Sunshine Duration in Vietnam, Renewable Energy, 11 (1997), 1, pp. 47-60
- Akpabio, L. E., Comparison between Solar Radiation Energy and the Characteristic of Wind Power Calculations in South Eastern Nigeria, Nig. J. Phys., 4 (1992), 1, pp. 15-20
- Akpabio, L. E., Eno, E. E., Monthly Average Daily Global and Diffuse Solar Radiation in Uyo, Nigeria, Integrated Journal of Sciences and Engineering, 3 (2001), 1, pp. 7-15
- Akpabio, L. E., Ukpong, U. A., Etuk, S. E, Analysis of Solar Radiation at Uyo, Nigeria, JAS, 6 (2003), 2, pp. 3607-3613
- Akpabio, L. E., Udoimuk, A. B., Characteristic Distribution of Total, Diffuse and Direct Solar Radiation at Calabar, GJPAS, 9 (2003), 1, pp.139-145
- Akpabio, L. E., Etuk, S. E, Relationship between Global Solar Radiation and Sunshine Duration for Onne, Nigeria, Turk. J. Phys., 27 (2003), 2, pp. 161-167
- Akpabio, L. E., Udo, S. O., Etuk, S. E, Empirical Correlations of Global Solar Radiation with Meteorological Data for Onne, Nigeria, Turk. J. Phys., 28 (2004), 3, pp. 205-212
- Akpabio, L. E., Udo, S. O., Etuk, S. E., Modeling Global Solar Radiation for a Tropical Location: Onne, Nigeria, Turk. J. Phys., 29 (2005), 1, pp. 63-68
- Udo, S. O., Aro, T. O., Akpabio, L. E., Characteristic of Diurnal Pattern of Global Photosynthetically Active Radiation at Ilorin , Nigeria, Nig. J. Phys., 18 (2006), 2, pp. 223-226
- Gopinathan, K. K., Polokoana, P., Estimation of Hourly Beam and Diffuse Solar Radiation, Solar and Wind Technology, 3 (1986), 3, pp. 223-229
- Dragicevic, S. M., Vuckovic, N. M., Evaluation of Distributional Solar Radiation Parameters of Cacak Using Long-Term Measured Global Solar Radiation Data, Thermal Science, 11 (2007), 4, pp. 125-134
- De Miguel, A., et al., Solar Radiation and Sunshine Hour Maps in Castilla and Leon Region (Spain), Renewable Energy, 4 (1994), 8, pp. 933-940
- Aksakal, A., Rehmann, S., Global Solar Radiation in Northeastern Saudi Arabia, Renewable Energy, 17 (1999), 2, pp. 461-472
- Raja, I. A., Twidell, J. W., Distribution of Global Insulation over Pakistan, Solar Energy, 44 (1990), 3, pp. 63-71
- Muneer, T., Solar Radiation and Daylight Models for the Energy Efficient Design of Buildings, Architectural Press, Oxford, UK, 1997
- Elagib, N. A., Alvi, S. H., Mansell, M. G., Correlationships between Clearness Index and Relative Sunshine Duration for Sudan, Renewable Energy, 17 (1999), 2, pp. 473-498
- Udo, S. O., Contribution to the Relationship between Solar Radiation and Sunshine Duration in the Tropics: A Case Study of Experimental Data of Ilorin, Nigeria, Turk Journal of Physics, 26 (2006), 3, pp. 229-236
- Udo, S. O., Aro, T. O., Measurement of Global Solar Radiations, Global Photosynthetically - Active and Downward Infrared Radiation at Ilorin, Nigeria, Renewable Energy, 17 (1999), 1, pp.113-122
- Frangi, J. P., Yahaya, S., Piro, J., Characteristics of Solar Radiation in the Sahel; Case Study; Niamey, Niger, Solar Energy, 49 (1992), 3, pp.159-166
- Ododo, J. C., Usman, A., Correlation of Total Solar Radiation with Common Meteorological Parameters for Yola and Calabar, Nigeria, Energy Conversion and Management, 37 (1996), 5, pp. 521-530
- Kuye A., Jagtap, S. S., Analysis of Solar Radiation Data for Port Harcourt, Nigeria, Solar Energy, 49 (1992), 2, pp. 139-145