| Author | Bai, Dongliang |
| Call Number | AIT Thesis no. AE-91-26 |
| Subject(s) | Peanuts
|
| Note | A thesis submitted in partial fulfillment of the requirement for the
degree of Master of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | An indent cylinder separator was designed and constructed for separating
peanut seeds according to their length. The cylinders were made from a thick
round - hole perforated metal sheet and wrapped with a th.in sheet metal. Peanut
seeds were separated into four length fractions using cylinder pocket sizes of
9.5, 13 and 14 mm, rotation speeds of 24, 32 and 40 rpm and working s lopes
of 3.6, 5.4 and 7.2 degrees. All tests were replicated twice using a sample weight
of 2 kg. Length measurements on 40 to 70 randomly selected seeds from each
separated fraction were made using a vernier caliper.
The separation of peanut seeds based on their length was successfully
achieved with indent cylinder operation. The average seed length of the lifted
fraction was more than the pocket size of 9.5 mm in first cylinder but less than
the pocket sizes of 13.0 and 14.0 mm in second and third cylinders, respectively.
Both cylinder slope and rotation speed appeared to influence the average
kernel length in separated fractions. In general, lower working slope and rotation
speed resulted in kernel sizes relatively more close to the pocket size. The
pocket size appeared to greatly influence the separation process. The standard
deviation of kernel lengths was not apparently related to the rotation speed or
the working slope. The separation efficiency was significantly decreased with
the increasing of' both rotation speed and working slope in second and third
cylinders. No such relationship was observed in first cylinder clue t o a too small
pocket size. Based on overall considerations, the cylinder rotation speed had
relatively more influence on average kernel length and separation efficiency
than the working slope.
The uplifted fraction in the third cylinder had the largest kernel size and
length decreased with an increasing in the rotation speed. The standard deviation
of kernel length increased with the increasing of both rotation speed and working
slope. |
| Year | 1991 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| 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) | Jindal, Vinod Kumar; |
| Examination Committee(s) | Gupta, C.P.;Athapol Noomhorm; |
| Scholarship Donor(s) | Canadian International Development Agency; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1991 |