METHODS OF REDUCING THE POWER REQUIREMENTS OF VENTILATION SYSTEMS. PART 1. DERIVATION OF HYDRODYNAMIC EQUATIONS OF AIR EJECTION BY A STREAM OF FREE-FLOWING MATERIAL IN A PERFORATED TROUGH WITH BYPASS CHAMBER

摘要

Hydrodynamic equations for the study of air recirculation in a vertical perforated tube situated in a bypass chamber as a stream of free-flowing material and ejected air travels through the chamber are obtained. The case in which recirculation of air ascending in the bypass chamber is realized both through holes in the uniform perforation of the walls of the trough as well as through the end holes at the ends of the bypass chamber is considered.