Performance Evaluation of Floating Fish Feed Extruder
| Autor: | T. O. Aduewa, O. J. Olukunle, S. T. Ojo, A. G. Ukwenya |
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| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | IOSR Journal of Agriculture and Veterinary Science. 7:103-113 |
| ISSN: | 2319-2380 2319-2372 |
| Popis: | The performance of a developed floating fish feed extruder was evaluated. The effect of some parameters such as; screw speeds (100 rpm, 150 rpm, and 200 rpm), moisture content of ration (20 %, 25 %, 30 % and 35 %), and die diameters (3 mm, 5 mm, 9 mm) on specific mechanical energy requirements, expansion ratio, bulk density and pelleting efficiency were determined. Results showed that increasing the screw speed from 100 rpm to 150 rpm tend to increase in extrusion efficiency from 63.25 % to 68.50 %. And decrease in bulk density from 1.05 g/cm 3 to 0.94 g/cm 3 ; decrease in specific mechanical energy from 24.70 kJ/kg to 22.30 kJ/kg. By increasing the die diameter from 3 mm to 5 mm, the specific mechanical energy tends to reduce from 28.44 kJ/kg to 26.46 kJ/kg, reduce bulk density from 1.05 g/cm 3 to 0.97 g/cm 3 . And increase extrusion efficiency from 63.25 % to 68.00 %. Results also showed that increase in moisture content from 20 % to 25 % tend to reduce the specific mechanical energy from 28.44 kJ/kg to 24.99 kJ/kg, reduce bulk density from 1.05 g/cm 3 to 1.01 g/cm 3 . And increase the extrusion efficiency from 63.25 % to 72 %. |
| Databáze: | OpenAIRE |
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