Local Exhaust Ventilation

This book examines the computations of gas-borne dust flows in local exhaust ventilation systems and provides practical recommendations for the energy-efficient containment of dust emissions. It discusses basic approaches to operational energy savings for local exhaust ventilation systems, including shaping intake openings of open local exhaust devices after determining boundaries of vortex areas, increasing the working distance of suction openings, inhibiting carryover of dust into aspiration network by promoting rotational aerodynamic fields, and more. Color photos throughout illustrate dust behavior, flow lines, and patterns.

Ivan Nikolayevich Logachev holds a doctorate in engineering and is a professor and academician at the Russian Academy ofNatural Sciences, Moscow, Russia. He graduated from the Kharkiv Engineering-Building Institute in 1962, with a specialization in heat and ventilation. For more than 30 years he worked in the All-Union Scientific Research Institute of Safety and Environment in the Mining and Metallurgical Industry (Krivoy Rog), where he was promoted from research assistant to the head of the laboratory of industrial ventilation. Dr. I. Logachev is the author of more than 300 scientific papers, more than 50 inventions, and several monographs. Konstantin Ivanovich Logachev holds a doctorate in engineering and is a professor at Belgorod State Technological University, Belgorod, Russia, where he has been working since 1995. He graduated from the Dnepropetrovsk State University in 1992, with a specialization in "hydroaerodynamics." Dr. K. Logachev has authored more than 150 scientific publications. Olga Aleksandrovna Averkova received a Candidate of Technical Sciences degree from the Belgorod State Technological University, Belgorod, Russia in 2004, and is currently an associate professor at the university. She has authored more than 100 scientific publications.

AERODYNAMICS OF DUST AIRFLOWS IN THE SPECTRA OF AIR EXHAUST DUCTS. Determination of the Velocity Field by Conformal Mapping Methods. Calculation of Flat Potential Flows by the Boundary Integral Equation Method. Calculation of Vortex Flows. Behavior of Dust Particles in the Suction Range. RECIRCULATION OF EJECTED AIR IN CHUTES. Specific Features of Air Ejection in a Perforated Duct with a Bypass Chamber. Air Ejection in a Porous Pipe with Linear Cross-Flow Pattern. Specific Features of Air Ejection in Elevator Handling of Grain. Measures for Reducing Aspiration Volumes in Elevator Handling of Grain. References.