Shay L. Simpson, Texas A&M University, Dept. Bio and Agricultural Engineering, 2117 TAMU, College Station, TX 77843-2117 and Calvin B. Parnell, Jr., Department of Biological and Agricultural Engineering, TAMU 2117, College Station, TX 77843.
A new Low Pressure Cyclone (LPC) was design and evaluated for use on axial-flow fan exhausts and high fibrous trash exhausts. Axial-flow fan exhausts in cotton gins can not operate with large back pressures. Typical "high-efficiency" cyclones generate 996 to 1245 Pascals (4 to 5 in wg) pressure. The pressure drop across the newly-designed LPC was 373 Pascals (1.5 in wg) at the optimal design inlet velocity of 732 m/min ± 122 m/min (2400 fpm ± 400 fpm). The LPC has a body section one diameter (D) in length and cone section two diameters in length (1D2D). The dust outlet is wider than conventional cyclone dust outlets at D/2 as is the air exit tube at D/1.6. Theoretical equations were used to determine the 1D2D LPC has a cut-point of 6 μm.
Presentation