03039nam a2200397 4500 20260818154603.0 280998s1986 th r 0000|0 eng d .b10426942 AIT Thesis no.ET-86-7 Navaratnam, Sivasakthy Mathematical modelling of a down draft wood gasifier Bangkok : Asian Institute of Technology, 1986 81 p. Thesis ; no. ET-86-7 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development Thesis (M.Eng.) - Asian Institute of Technology, 1986 In this study, a review of the available literature on kinetics of wood pyrolysis has been made. Available literature shows wood pyrolysis is a complex process and need to be studied further experimentally, to develop a fairly realistic theoretical model for pyrolysis zone of a wood gasifier. Since no data are available on pyrolysis product distribution in fixed bed wood gasifier, an attempt was made to estimate the pyrolysis product distribution theoretically assuming pyrolysis reactions to be autothermic. Thermal Analysis was carried out to analyze the kinetics of pyrolysis process qualitatively. The results show that heat of reaction of pyrolysis process is different at different temperatures. Major weight loss occurred in the .temperature range of 280 to 450 C. A steady state model for a downdraft wood gasifier has been developed based on kinetics and mechanisms of chemical reactions, mass and heat transfer and conservation of mass and energy. Wood gasifier model is subjected to constraints such as pyrolysis product composition. Parametric studies were made on wood and air flow rates, reaction multiplier and particle diameter. Also, an attempt has been made to incorporate porosity effect, in the model developed by BASAK(1985) for charcoal gasifier. Incorporation of porosity effect was found to improve the reaction rates . Pyrolysis Biomass energy Bhattacharya, Sribas C., Chairperson Prida Wibulswas, Examination Committee Tentscher, Wolfgang, Examination Committee CIDA, Scholarship Donor Asian Institute of Technology. Thesis ; no. ET-86-7 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B19621 .b10426942 mnait x 240401 2 951012 m a x 0 mnait mnarc 22 40 Barcode : 30050120678403 CREATED : 2014-12-02 RECORD # : i12762489 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120345011 CREATED : 2016-06-15 RECORD # : i13039143 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 73970 73970 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.ET-86-7 30050120678403 2026-08-18 15:46:03 3 2026-08-18 22 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no.ET-86-7 30050120345011 2026-08-18 15:46:03 2026-08-18 40