A Slotted Wavegume Applicator for Continuous Flow Grain Drying
Source abstract
Abstract
A slotted waveguide antenna was designed and developed with series slots cut on the broad side that constituted a popular means of coupling microwaves with grain for drying. The radiating characteristics of the slotted wave guide antenna mounted in a setup that simulated the coupling to a grain conveying tube were studied at a frequency of 2.45 GHz. The antenna consisted of a WR-340 waveguide made of copper. The effect of the slot inclination angle O, moisture content and the shape of the slots were investigated. The results indicated 55 degrees as an optimum slot angle for slots having a width of 13 mm and a length 58 mm. Slots with a width of 6 mm did not exhibit any regular behavior and the effect of O was not clearly identified.
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Research context
OpenAlex topics: Radiative Heat Transfer Studies · Cyclone Separators and Fluid Dynamics · Engineering Technology and Methodologies
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References (4)
Show source-provided references
1. ASAE Standards. 1994. 41st edition. ASAE 352.2 DEC92. Moisture measurement—Unground grain and seeds. American Society of Agricultural Engineers, St-Joseph, MI, U.S.A.
2. Bialod, and Marchand. 1986. La conception des installations industrielles de chauffage dielectrique par haute frequence et micro-ondes: methode, technologie, exemple. Electricite de France. Service applications de l’Electricite et Environnement, HE 142 T 530, 68p. [Design of Industrial Dielectric Heating installations by high frequency and microwave; methodology, technology, example. Electricity of France. Electricity service applications and environment, HE 142T 530, 68p.]
3. Metaxas, A.C. and Meredith, R.J. 1983. Industrial microwave heating. IEEE Power Engineering Series 4, Peter Peregrinus Ltd., London, U.K.
4. Shivhare, U.S. 1991. Drying characteristics of corn in a microwave field. Unpublished Ph.D, Thesis. McGill University, Quebec, Canada.