KEEPEING OF MICROCLIMATE PARAMETERS AT TERMINAL STATION OF SUBWAY LINE

In the work results of field studies of speed of air flows initiated by piston effect of trains on terminal station Ploshad Garina-Mikhaylovskogo of Novosibirsk Subway are represented. Actual volumes of cold outside air inflowing into the station and dependences of air flow speeds on movement speed of trains are determined. It is shown when temperature of outside air is below than -10 °, warm air curtains in operation do not provide heating up inflowing into the station cold air to standard temperature. Results of calculating experiments at math model of air distribution are represented, calculated dependences of speed of air flows movement through halls of the station on train movement speed at block “Sibirskaya - Ploshad Garina-Mikhaylovskogo” are discovered. It is shown that the most effective way of reduction of intensity of cold outside air inflowing into the station is change of speed modes of arriving and departing trains. Values of required heat power of warm air curtains at station halls in dependence on outside air temperature and speed mode of trains are determined. Variant of speed mode when train arrives to the station with the speed 60 km/h and departures with the speed 30 km/h is recommended. In this case average rate of inlowing to the hall air is reduced into 2 times compared with air rate of actual train movement schedule. In the context of this variant, power of operated warm air curtains is enough for keeping standard temperature at the halls of the stations when outside air temperature is above -27 °С.