Design of a wind tunnel for separating flower parts of saffron

• Autorzy: Emadi B. , Yarlagadda P. K. D. V.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The separation possibility of stigma from the other parts of saffron flower using its aerodynamic properties was studied and a vertical wind tunnel was designed on the basis of the obtained results. Design/methodology/approach: Terminal velocities of three parts of saffron flower, including petal, stigma and anther within four days after harvest were investigated. Significant difference between terminal velocity of stigma (2.4-2.8 m/s) and the other parts (1-2 m/s) of flower on the first day after harvesting, revealed that accurate separation using air stream is possible. Equal friction method was applied for design. A vertical wind tunnel applying a fan with a flow rate of 1700 m3/h and a static pressure of 0.82 cm was designed for stigma separation of saffron flower from the other parts. The duct of introduced wind tunnel was sized equal to 40.6 x 40.6 cm for main, 40.6 x 33 and 40.6 x 18 cm for lateral branches. Research limitations/implications: Operation mechanization of harvest and post-harvest of saffron flower is economically important due to time limitation, daily harvesting, and possible contamination due to manual operations. Practical implications: A vertical wind tunnel aimed to use for processing of saffron flower was designed. The investigation result on terminal velocity measurement of three main parts of the flower showed that separation stigma from the other parts of flower is possible. Originality/value: The results showed that the separation of stigma from the other parts is definitely possible due to a significant difference of their terminal properties, especially on the first day of harvesting. Therefore, a vertical wind tunnel on the basis of obtained results was designed.

Słowa kluczowe

EN

technological devices and equipment; aerodynamic properties; wind tunnel; saffron

PL

tunel aerodynamiczny; właściwości aerodynamiczne

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2008
• Tom: Vol. 31, nr 2
• Strony: 635--638
• Opis fizyczny: Bibliogr. 7 poz., wykr., tab., il.

Twórcy

autor

Emadi B.

autor

Yarlagadda P. K. D. V.

• Ferdowsi University of Mashhad, Department of Agricultural Machinery P.O.Box 1163, Mashhad, Iran,

Bibliografia

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• [3] H. Ebrahimzadeh, T. Rajabian, P. Abrishamchi, R. Karamian, O. Sabura, Iranian Saffron in a Research View, Nashr e Ettlaat Publisher, 2006.
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• [5] F. Demir, I. Akinci, Physical and nutritional properties of four major commercial Turkish hazelnut varieties, Journal of Food Engineering 63 (2004) 341-347.
• [6] N. N. Mohsenin, Physical properties of plant and animal materials, New York: Gordon and Breach Science Publishers 2 (1980) 238-241.
• [7] F. Ozguven, K. Vursavus, Some physical, mechanical and aerodynamic properties of pine (Pinus pinea) nuts, Journal of Food Engineering 68 (2005) 191-196.