Statistical Assessment of Average Global and Diffuse Solar Radiation on Horizontal Surfaces in Tropical Climate.

Statistical Assessment of Average Global and Diffuse Solar Radiation on Horizontal Surfaces in Tropical Climate.

ABSTRACTThe hourly and monthly average global and diffuse solar radiation on horizontal surfaces in Nsukka, a tropical climate on Lat. 60 52' N, Long. 70 24' E and 397 metres above sea level, were critically evaluated for each month of the year, starting from November 2009 to October 2010. For each month, the hourly average global and diffuse irradiance obtained were correlated with local time of the day, using second degree polynomials, while the monthly average values were correlated with the months of the year, using third degree polynomials. These correlations were performed to facilitate easy prediction of global and diffuse irradiance at any time and month of the year in Nsukka. The maximum hourly average global irradiance of 773 W/m2 was observed at 12.00 noon for the month of January 2010, while the minimum hourly average value of 426 W/m2 was observed at 2.00 pm for the month of August 2010. The monthly average global radiation varied from 243 W/m2 for the month of August 2010 to 427 W/m2 for the month of January 2010, while the monthly average diffuse irradiance varied from 28.83 W/m2 in June 2010 to 42.84 W/m2 in January 2010.
International Journal Of Renewable Energy Research-Cover
  • ISSN: 1309-0127
  • Başlangıç: 2015
  • Yayıncı: İlhami ÇOLAK
Sayıdaki Diğer Makaleler

Maximal Wind Energy Tracing of Brushless Doubly-Fed Generator under Flux Oriented Vector Control

Hicham Serhoud, Djilani Benattous

Modeling and Control of a Wind Power Conversion System Based on the Double-Fed Asynchronous Generator

Moualdia Abdelhafidh, MO. Mahmoudi, L. Nezli, O. Bouchhida

Identification of the Situation of Renewable Energy Alternatives in the Criteria known by private sector investors (Case study: Iran)

Alireza Aslani, Marja Naaranoja, Erkki Antila, Mostafa Golbaba

Combustion Characteristics of a High Pressure Fuel Injected Single Cylinder Compression-Ignition Engine, Fuelled with Diesel–Ester Blends Under Various Fuel Injection Advance Angles

Alp Tekin Ergenc, Deniz Ozde Koca, Merve Abacioglu

Statistical Analysis of Wind Resources at Darling for Energy Production

Zaccheus Olaniyi Olaofe, Komla A. Folly

Nigerian Jatropha Curcas Oil Seeds: Prospect for Biodiesel Production in Nigeria

Elizabeth Funmilayo Aransiola, Michael Olawale Daramola, Tunde Victor Ojumu, Mujidat Omolara Aremu, Stephen kolawole Layokun, Bamidele Ogbe Solomon

Evaluation of Renewable Energy Sources Exploitation at remote regions, using Computing Model and Multi-Criteria Analysis: A Case-Study in Samothrace, Greece

J. C. Mourmouris, C. Potolias, Jacob G Fantidis

Introduction to FACTS Controllers in Wind Power Farms: A Technological Review

Bindeshwar Singh

Synthesis of Carbon Nanotube Using Olive Oil and It's Application in DYE Sensitized Solar Cell

Swati Sharma, Pinaki Ranjan, Sthitadhi Das, Sushil Gupta, Ravinder Bhati, Amitava Majumdar

Derivation of Surface Roughness and Capacity Factor from Wind Shear Characteristics

Apratim Roy