Studies on the Properties of Solar Radiation in Taiwan
| Autor: | Yuan-Hua Chang, 張原華 |
|---|---|
| Rok vydání: | 2008 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 96 Because of the energy crises and the rise of environmental awareness recently, accelerate the development of renewable energy. Taiwan is located in the subtropical zone and the amount of sun light exposure is extremely sufficient in the whole year. The important advantage of solar energy is its inexhaustible, clear nature and hazard guarantee; further, it’s indomitable by any country. So it is very suitable to develop the solar energy in Taiwan. If the development of solar energy to be carried out, the best important work is to understand the various zone of the properties of solar radiation in Taiwan. The main purpose of this study is to utilize statistical methods and harmonic analysis to understand the properties of solar radiation in Taiwan. Liu (2006) found that the CWB pyranometers had been not any corrected from the installation to 2003. In order to avoid the use of incorrect data, this study designation the CWB pyranometers all completed adjustment from April, 2003 to March, 2006 for this study material analysis time sector, carried on the analysis. In order to understand the difference between them, compare this result of this study with Liu's result. The results indicate that the maximum value of monthly mean daily solar radiation falls in July, and its corresponding minimum value falls in January. The map of annual mean daily solar radiation for spatial interpolations in Taiwan has an increase trendy from north to south, with the maximum in the Chiayi station and the minimum in the Chutzehu station. The distribution types of daily solar radiation in different months are closest to be Weibull distribution. With regards to harmonic analysis, the study finds the third harmonic which is related to annual cycle almost dominant the trend of the original data. East area is affected by the third harmonic more than the west and the north area is affected by the third harmonic greater than the south. The Taichung station is influenced by the third harmonic minimumly. We find that the maximum value of the third harmonic falls during July to August. The annual mean daily solar radiation and the total solar radiation almost has gradually decreasing trend besides the Taichung station. This phenomenon should relate to the decline of annual duration of sunshine. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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