Verification of Solar Radiation Energy Calculations Using Methods Prescott Regarding Actual Conditions
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Published: Aug 31, 2016 |
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Keywords: Sun Radiation, Energy, Tropical area, Correlation and RMSE |
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Abstract
Sun radiation is the source of energy that can give effect processes in atmosphere. Different with energy drom fossil, sun radiation is profuse energy but it depend on astronomical location. Indonesia as a country in tropical area that accept so many energy of sun radiation, so Indonesia is a potential place that can be used to using sun radiation as a source of energy. But, because of the limited of information about sun radiation in Indonesia,the profit of energy of sun radiation cannot be used maximally. So we need a formula that can be used to calculate energy of sun radiation to complete the data based on another available data. Calculation of sun radiation with Prescott method is a method that can be used to calculate energy of sun radiation based on duration of sunshine and latitude data. But, we need to know how suitable calculation with Prescott method and actual condition is, so the result data can be used maximally. Based on the comparation of calculation of sun radiation with Prescott method and actual condition, both of them have the same pattern that is showed by the high value of correlation in some places that is in Kayuwatu, Kototabang, Banjarbaru, Maros and Pondok Betung, in other side Pulau Baai has different pattern that is showed with low value of correlation but it has the lws value of Root Mean Square (RMSE) so the different value is can be tolered
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