A preliminary analysis of solar irradiance measurements at TNB solar research centre for optimal orientation of fixed solar panels installed in selangor Malaysia

A. M. Hashim, M. A M Ali, B. Ahmad, R. M. Shafie, R. Rusli, M. A. Aziz, J. Hassan, Mohd Z. Bin Che Wanik

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2 Citations (Scopus)


The well established rule for orienting fixed solar devices is to face south for places in the northern hemisphere and northwards for the southern hemisphere. However for regions near the equator such as in Selangor Malaysia, the position of the sun at solar noon is always near zenith both to the north and south depending on location and month of year. This paper reports an analysis of global solar radiation data taken at TNB Solar Research Centre, Malaysia. The solar radiation is measured using both shaded and exposed pyranometers together with a pyrheliometer which is mounted on a sun-tracker. The analysis on the solar measurements show that a near regular solar irradiation pattern had occurred often enough during the year to recommend an optimum azimuth orientation of installing the fixed solar panels tilted facing towards east. Even though all the solar measurements were done at a single location in TNBR Solar Research Centre at Bangi, for locations near the equator with similar weather pattern, the recommended azimuth direction of installing fixed solar panels and collectors tilted eastward will also be generally valid.

Original languageEnglish
Article number012001
JournalIOP Conference Series: Earth and Environmental Science
Issue number1
Publication statusPublished - 2013
Externally publishedYes


ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Environmental Science(all)

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