Influence of aerosols pollution on the amount of collectable solar energy

► A parametric clear sky model for solar irradiance is established. ► Energy loss in pollution episodes with aerosols is evaluated. ► Significant loss of collectable solar energy of over 20% may occur. ► The study is conducted with data collected in Timisoara, Romania. The paper is focused on the es...

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Bibliographic Details
Published in:Energy conversion and management 2013-06, Vol.70, p.76-82
Main Authors: Calinoiu, Delia, Paulescu, Marius, Ionel, Ioana, Stefu, Nicoleta, Pop, Nicolina, Boata, Remus, Pacurar, Angel, Gravila, Paul, Paulescu, Eugenia, Trif-Tordai, Gavrilă
Format: Article
Language:English
Subjects:
Aerosols
Applied sciences
Coefficients
Energy
Equipments, installations and applications
Exact sciences and technology
Natural energy
Photovoltaic conversion
Photovoltaics
Pollution abatement
Sky
Solar energy
Turbidity
Water pollution
Water vapor
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Summary:► A parametric clear sky model for solar irradiance is established. ► Energy loss in pollution episodes with aerosols is evaluated. ► Significant loss of collectable solar energy of over 20% may occur. ► The study is conducted with data collected in Timisoara, Romania. The paper is focused on the estimation of collectable solar energy losses in aerosol pollution events. To do this, a parametric clear sky solar irradiance model has been built and validated. For applying the model, a set of four meteorological parameters (ozone, nitrogen dioxide, water vapor column content and the Ångström turbidity coefficient) are required at input. The energy loss in a pollution episode was evaluated as the difference between the clear sky solar irradiation computed in two situations: (1) Using measured values for all inputs and (2) using measured values for all inputs excepting the Ångström turbidity coefficient, for which a climatological reference value has been assumed. The calculations show that the aerosol pollution can lead to a significant loss of collectable solar energy, of over 20%. Overall results drive to the generic conclusion that the pollution episodes should be considered in both stages of a photovoltaic plant: in development, by taking them into account when the typical meteorological year is constructed, and in the exploiting stage, by accounting them in the forecasting procedure of the output power. The study was conducted with data collected in Timisoara, Romania, during 2011 and 2012.
ISSN:0196-8904
1879-2227
DOI:10.1016/j.enconman.2013.02.012