| Autor: |
Biweta, Worku, Tekeste, Solomon |
| Předmět: |
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| Zdroj: |
IUP Journal of Mechanical Engineering; Aug2012, Vol. 5 Issue 3, p68-75, 8p, 2 Black and White Photographs, 2 Diagrams, 2 Charts |
| Abstrakt: |
Engine-driven chopper has been developed for chopping of crop residue and hay. The machine was designed with the following main components: feed chopper, rotating drum with swinging knives, casing with fixed knives welded on it, a screen and stands. The machine was tested to evaluate its performance. The test was conducted using three levels of drum speeds: 960, 1200 and 1400 rpm, and three feed rates: 420, 540 and 660 kg h-1. The test result showed that the optimum drum speed and feed rate values for both maize stalk and grass were 1200 rpm 540 kg h-1 respectively. The average size reduction percentage using these optimum combinations was 92.0% and 79.5% for maize stalk and grass respectively. The machine performed well with output rate ranging from 420 to 660 kg/h and specific energy requirement of 11 to 20 KJ kg-1 output. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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