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Journal of Mining Sciences

2018 year, number 4

Improving Efficiency of Fan Control in Shallow Subway Tunnels

D. V. Zedgenizov, N. A. Popov
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630091 Russia
Keywords: тоннельный вентилятор, частота вращения ротора, расход воздуха, поршневое действие поездов, Tunnel fan, rotor speed, air flow rate, piston effect

Abstract

The data of the full-scale experiment on adjustment of VOMD-24 fan rotor speed with a view to controlling the fan efficiency under impact of the piston effect are presented. The reduction in actual air flow rate at the passenger platform of subway due to decreased fan efficiency is estimated at different intensity of traffic along the subway line. The algorithm of the tunnel fan rpm adjustment per day in conformity with the train traffic density and the architecture of automated control of the tunnel fan efficiency by frequency transducer are proposed.