| Author | Sahu, Mahesh Kumar |
| Call Number | AIT Thesis no. AE-89-26 |
| Subject(s) | Rice--Drying
|
| Note | A thesis submitted in partial fulfillment of the requirements for the
degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | The performance of an axial flight prototype rotary dryer
using heated air for driving paddy was investigated. Drying air
temperature in the range of 60 to 100 ·c was used for paddy
having initial moisture content in the range of 18 to 24% w. b.
A two stage paddy drying operation was found suitable to
minimise the reduction in head yield with provision of tempering
inbetween the drying stages. Paddy could be dried to about 14%
w.b . and. the driving characteristics could be well represented by
simple logarithmic model.
For comparison paddy was dried using conduction heating .
Also a combination drying consisting of first stage conduction
heating and second stage heated air drying was tried. The
moisture canoe used was same in all the systems but the
temperature used was different in conduction heating depending on
the optimum conditions found from the earlier studies on
conduction drying to paddy.
The milling quality was found to be same in all the systems.
The drying efficiency was higher in heated air drying than in
conduction heating. The energy efficiency was almost same in all
the systems . Cost comparison showed t h at conduction drying
incurred minimum operating cost per ton of paddy followed by
combination drying. Heated air drying incurred maximum cost. |
| Year | 1993 |
| Type | Thesis |
| School | School of Environment, Resources, and Development |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Illangantileke, Sarath G.
; |
| Examination Committee(s) | Athapol Noomhorm ;Jindal, Vinod Kumar ;Waibel, Hermann ; |
| Scholarship Donor(s) | Royal Government of The Netherlands.
; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1989 |