| Author | Anwar, Muhammad Tahir |
| Call Number | AIT Thesis no. AE-87-46 |
| Subject(s) | Threshing machines--Pakistan
|
| 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 axial flow grain legume thresher CAGAD thresher Model C)
was tested for field performance and economic evaluation on a
chickpea variety CM- 72. By having 3 variations of cylinder
speeds, 3 variations of concave clearances and 3 variations of
feed rates: it was found to be that the thresher worked best with
cylinder speed 580 rpm, feed rate 430 kg/hr and concave clearance
3. 0 cm, at which the thresher capacity was measured to be 190
kg/hr with a threshing efficiency of 93% and a fuel consumption
of 5 . 7 l/h. For this combination the total machine loss and grain
damage were measured to be 9. 1 % and 2. 2%, respectively.
A comparative field study was also undertaken between
mechanical and traditional threshing systems. For threshing
normal mature crop the mechanical threshing system resulted in
the total machine loss of 9. 8%; compared to 11. 9% and 12% by
traditional threshing (bullock and tractor) systems respectively.
The labour requirement for threshing one ton of grain by machine
was about 8. 52 man- hrs, whereas, 31. 35 man- hrs and 16. 29 man - hrs
per ton of grain were required for bullock and tractor systems
respectively. |
| Year | 1987 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Gupta, Chandra P.
|
| Examination Committee(s) | Gee-Clough, D. ;Singh, Gajendra
|
| Scholarship Donor(s) | DAAD, West Germany |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1987 |