The Estimation of Clear Sky Global Horizontal Irradiance at the Equator

We analyse Singapore global horizontal irradiance (GHI) measurements to estimate clear sky GHI in the equator region. The data consists of a one-year period of clear sky GHI at three solar irradiance monitoring stations in Singapore, namely, First Zero Energy House in Singapore (1.3094∘N, 103.9160∘E...

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Bibliographic Details
Published in:Energy procedia 2012, Vol.25, p.141-148
Main Authors: Dazhi, Yang, Jirutitijaroen, Panida, Walsh, Wilfred M.
Format: Article
Language:English
Subjects:
Clear sky global solar irradiance
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Summary:We analyse Singapore global horizontal irradiance (GHI) measurements to estimate clear sky GHI in the equator region. The data consists of a one-year period of clear sky GHI at three solar irradiance monitoring stations in Singapore, namely, First Zero Energy House in Singapore (1.3094∘N, 103.9160∘E) located in the east of the country, Solar Energy Research Institute of Singapore (1.3007∘N, 103.7718∘E) in the mid-west, and Nanyang Technology University Intelligence Systems Center (1.3436∘N, 103.6792∘E) in the west. Several empirical clear sky models are considered for a Singapore case study. An regression method is proposed to parameterise the model of choice for Singapore's measured GHI. The developed model is validated using GHI measurements from difference stations over different time periods.
ISSN:1876-6102
1876-6102
DOI:10.1016/j.egypro.2012.07.019