03483nam a2200421 4500 20260818171528.0 080598 th eng .b10494893 AIT Thesis no. AE-93-46 Roongruang Kalsirisilp Performance evaluation of a Thai-made rice combine harvester Bangkok : Asian Institute of Technology, 1993 85 leaves : ill. Thesis ; no. AE-93-46 Thesis (M.Eng.) - Asian Institute of Technology, 1993 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering. This research was carried out to investigate the problems associated with the working of locally- made rice combine harvester used by the farmers and the contractors in Thailand. The study was divided into four sections. Firstly the farmer's opinion was obtained about rice combine harvester during the process of data collection. Secondly, the information about the machine performance and field problems was gathered from the contractors through a comprehensive questionnaire. Thirdly, the manufacturing process was observed, analyzed and evaluated. Lastly, the field performance of the machine was evaluated through observations in 29 fields in the four provinces in the Northern Thailand. The results of the study infer that the farmers were satisfied with the performance of the machine. The contractors were not satisfied and wanted improvements in the machine and the availability of the spare parts. The design of the threshing unit and its position, and the transmission system of the rice combine harvester needed improvements. Effective field capacity of the rice combine harvester ranged from 0.1- 0.7 ha/h, with an average of 0.4 ha/h and the total grain losses varied from 1.3- 10.8% of grain yield, with an average of 4.8%. The field efficiency varied from 28% to 92% with an average of 66%. Considering the present rate of manual harvesting as Bht 3,206/ha, the break ·even area was found to be 105 ha. The economic analysis further showed that the pay back period was less than two years, if the machine could harvest 640 ha/year. Harvesting machinery Singh, Gajendra, Chairperson Gee-Clough, D., Examination Committee Salokhe, Vilas M., Examination Committee Gupta, C. P., Examination committee Rajamangala Institute of Technology, Scholarship donor Asian Institute of Technology. Thesis ; no. AE-93-46 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B16155 .b10494893 mnait x 240403 2 951012 m a x 0 mnait mnait mnarc 20 40 Barcode : 30050003009197 CREATED : 1994-05-18 RECORD # : i10620710 LPATRON : 1019658 LCHKIN : 2006-12-07 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 1 TOT RENEW : 0 Barcode : 30050003009221 CREATED : 1994-05-18 RECORD # : i10620722 LPATRON : 1016860 LCHKIN : 2003-10-13 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 7 TOT RENEW : 1 Barcode : 30050120375802 CREATED : 2016-01-06 RECORD # : i13010657 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 86610 86610 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. AE-93-46 30050003009197 2026-08-18 17:15:28 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. AE-93-46 30050003009221 2026-08-18 17:15:28 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. AE-93-46 30050120375802 2026-08-18 17:15:29 2026-08-18 40