| Author | Exell, Robert H. B. |
| Call Number | AIT Research Report no. 134 |
| Subject(s) | Wind power--Thailand
|
| Note | A research report submitted in partial fulfilment of the requirements for a Degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | Hourly wind data from Chiang Mai, Ubon, Bangkok and Hatyai during the year 1974 have been used to determine wind speed distributions at these stations in four three-month seasons of the year. Calm conditions occur
from 23% to 71% of the time. In the non-calm periods the wind speeds have Weibull distributions with constant shape parameters ·ranging from 1.2 at Ubon to 2.0 at Hatyai, and mean wind speeds from 1 m/s to over 4 m/s, varying with location and season. The diurnal variations in mean wind speed and in the frequency of calm have also been studied in each season at Ubon, Bangkok and Hatyai. The seasonal and geographical variations of wind over Thailand have been determined from monthly mean wind speeds and directions at 44 stations. Mean wind speeds vary only slightly with season. They are generally less than 2 m/s in the north of Thailand but exceed 4 m/s at some stations near the sea coast. The prevailing wind directions are controlled by the south-westerly monsoon in summer and autumn, and by the easterly trade wind in winter and spring. The maximum wind velocities reported during the 25-year period are in the range 20-40 m/s, depending on location. |
| Year | 1981 |
| Type | Research Report |
| School | School of Environment, Resources, and Development |
| Examination Committee(s) | Thavapalachandran, S. ; Mukhia, P. |
| Scholarship Donor(s) | The John F. Kennedy Foundation of Thailand, and published by the Renewable Energy Resources Information Center,
Asian Institute of Technology |
| Degree | Research Report (M. Eng.) - Asian Institute of Technology, 1981 |