Models for the estimation of diffuse solar radiation for typical cities in Turkey

Bakirci K.

ENERGY, cilt.82, ss.827-838, 2015 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 82
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1016/j.energy.2015.01.093
  • Dergi Adı: ENERGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.827-838
  • Anahtar Kelimeler: Diffuse radiation, Sunshine duration, Clearness index, Diffuse fraction, Turkey, SUNSHINE-BASED MODELS, OPTIMUM TILT ANGLE, MONTHLY-AVERAGE, EMPIRICAL-MODELS, HORIZONTAL SURFACE, BRIGHT SUNSHINE, REGION, STATIONS, FRACTION, EGYPT
  • Atatürk Üniversitesi Adresli: Evet

Özet

In solar energy applications, diffuse solar radiation component is required. Solar radiation data particularly in terms of diffuse component are not readily affordable, because of high price of measurements as well as difficulties in their maintenance and calibration. In this study, new empirical models for predicting the monthly mean diffuse solar radiation on a horizontal surface for typical cities in Turkey are established. Therefore, fifteen empirical models from studies in the literature are used. Also, eighteen diffuse solar radiation models are developed using long term sunshine duration and global solar radiation data. The accuracy of the developed models is evaluated in terms of different statistical indicators. It is found that the best performance is achieved for the third-order polynomial model based on sunshine duration and clearness index. (C) 2015 Elsevier Ltd. All rights reserved.