Document Type : Original Article
Authors
1 PhD student of agricultural machinery, Science and research branch, Islamic azad university
2 Department of Mechanical engineering of biosystems, science and research branch, islamic azad university, Tehran, Iran.
3 Retired from Tehran University
Abstract
One of the important processes in agriculture is separating of agricultural products. The use of cyclones is one of the methods that with lower costs, shorter separation time and simpler operation, has a high efficiency compared to other separation methods (Such as separation by hand and so on). The aim of this research is to designing, simulation and construction a cyclone separation device and evaluation it in order to separate the stigma from the saffron petals. In this research, cyclone simulation was performed using ANSYS FLUIN software and computational fluid dynamics (CFD) analysis method and the separation efficiency was obtained. The device was designed using SOLID WORKS software and its prototype was made and evaluated at three levels of 1.5, 2.5 and 3.5 m/s of air speed and at five levels of moisture content (10, 20, 40 and 60)%wb. For this purpose, a factorial experiment with completely randomized design with three replications was used. The evaluation results of the device showed that the highest separation of the device at 20% moisture content and 3.5 m/s air speed was 80% efficiency and the lowest was 11% efficiency for 80% moisture content and 1.5 m/s air speed which was very close to the best result of simulating the device in ANSYS FLUINT software which it was 89% efficiency at 3.5 m/s air speed.
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