02363cas a2200253 a 450000500170000000800410001703500150005810000350007324500560010826000520016430000100021649000270022650001560025350200580040952012830046765000240175065000220177470000400179670000410183670000520187771000560192981000590198585600650204420260817170946.0110902s1980    th uu|m rtt   0|  a1eng d  a.b101040571 aThavapalachandran, Sellathurai10aAvailable wind energy in Thailand for water pumping  aBangkok :bAsian Institute of Technology,c1980  a48 p.1 aThesis ;vno. AE-80-16  aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development  aThesis (M.Eng.) - Asian Institute of Technology, 1980  aHourly wind velocity data for one year have been used to determine the seasonal velocity distribution curves and power duration curves at four stations in Thailand (Chiangmai, Ubon, Bangkok and Hatyai), The  results were fitted to Weibull distributions, which has the form   F(v) =1 - exp [ - (c)K ]    v  where F(v) is. the cumulative relative frequency of hours at which velocity v was reported, and C and K are parameters. The parameters K were different  at different stations but the same in all seasons, varying from 1.2 t o 2.0. At each station calm conditions were reported for durations of time varying  from 25% to 71% of the total in one season. The mean wind velocities during the non-calm periods, which are related to the parameter C, range from 0.4  m/sec in the period of November to January at Chiangmai t o 3. 0 m/sec in the period of November to January at Ubon. The energy that could be extracted from the wind by means of three types of irrigation wind pump (soil rotor  type, two-bladed rotor type and fan type) has been calculated from the wind velocity distributions. The extractable from the wind for three-month season ranges from 0.28 kWH/m2 in the period of August to October at Bangkok to 132. 7 kWH/m2 in the period of November to January at Ubon.  0aWindmillszThailand 0aPumping machinery1 aOlesen, Svend Elsnab, eChairperspn1 aExell, Robert H.B., eCo-Chairperson0 aApichart Anukularmphai, eExamination Committee2 aThe Royal Norwegian Government, eScholarship Donor2 aAsian Institute of Technology.tThesis ;vno. AE-80-16  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B21912