04063nam a2200457 4500 20260817163511.0 080998 th eng .b10098628 AIT Thesis no. ET-82-4 Mohanty, Brahmanand Assessment of a directly coupled wind-powered compression refrigeration system Bangkok : Asian Institute of Technology, 1982 x, 87 p. Thesis ; no. ET-82-4 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Environment, Resources and Development Thesis (M.Sc.) - Asian Institute of Technology, 1982 A variable speed compression refrigeration test set-up was designed and fabricated to investigate the feasibility of its direct coupling with compatible windmills. The system was experimented with in order to evaluate the effect of "cold production" with various power input patterns and to pinpoint those parameters that severely affect its desired cooling performance due to the instantaneous fluctuations and intermittent availability of power. Suggestions have been made at a later section for possible solutions to the problems encountered in direct coupling. In the indoor test set-up a variable speed thyristor controlled eddy current motor was used to simulate a few ideal windmill output patterns. An input/output port with analog-digital and digital-analog converters was tested and developed to interface with a Z-80 microcomputer. The microprocessor was programmed to: i. control the variable speed motor; ii. track the variations of different parameters critically with respect to time; iii. process the acquired data from various transducers. Finally an analytical procedure has Been described to assess the viability and applicability· of such a system for a specified refrigeration requirement at a site of known wind regime, It has been experimentally proved that such a system is feasible with a slight modification in its designing to withstand large fluctuations in the windspeed, and to preserve the additional cooling effect during strong winds for later usage during low-winds or no wind periods. As the condenser and the compressor irreversibilities increase with increasing compressor speed, suggestions have been incorporated to improve the heat transfer area and orientation to take advantage of the strong winds and increase the heat transfer rate. Wind power Refrigeration and refrigerating machinery Research Walter, Despiegelaere, Ir., Chairperson Prida Wibulswas, Examination Committee Exell, Robert H.B., Examination Committee Bhattacharya, Sribas C., Examination Committee Carl Duisberg Gesellschaff (Federal Republic of Germany), Scholarship Donor Asian Institute of Technology. Thesis ; no. ET-82-4 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B21158 .b10098628 mnait x 240829 3 951012 m a x 0 mnait mnait mnait mnarc 20 40 Barcode : 30050003103461 CREATED : 1995-10-13 RECORD # : i10108890 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050003103487 CREATED : 1995-10-13 RECORD # : i10108907 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050003103479 CREATED : 1995-10-13 RECORD # : i10108919 LPATRON : 1023339 LCHKIN : 2012-07-26 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 1 TOT RENEW : 0 Barcode : 30050120352710 CREATED : 2016-10-06 RECORD # : i13032203 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 8950 8950 0 0 0 0 MAIN MAIN mnait 2026-08-17 10.00 0 AIT Thesis no. ET-82-4 30050003103461 2026-08-17 16:35:11 2 2026-08-17 20 0 0 0 0 MAIN MAIN mnait 2026-08-17 10.00 0 AIT Thesis no. ET-82-4 30050003103487 2026-08-17 16:35:11 3 2026-08-17 20 0 0 0 0 MAIN MAIN mnait 2026-08-17 10.00 0 AIT Thesis no. ET-82-4 30050003103479 2026-08-17 16:35:11 1 2026-08-17 20 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no. ET-82-4 30050120352710 2026-08-17 16:35:11 2026-08-17 40