GENERATION AND MAINTENANCE OF THE REQUIRED AIR PARAMETERS IN SUBWAY TUNNELS DURING WARM SEASONS

Heat buildup in subway tunnels in warm seasons is a major hazard which can be removed using fan units. At the present time, the problem of heat processes and microclimate maintenance in subways with double-track tunnels is studied insufficiently. This article discusses ventilation performance in subway with double-track tunnels using data on the busiest line of the Moscow Metro (Taganka–Krasnaya Presnya). Heat buildup from trains and passengers is estimated, and temperature balances are determined for tunnels at different depths of occurrence: 5, 10 and 20 m. The required and daily air flows are calculated for the hottest month of the year (July) using established standards and statistical data. The article shows that the estimated daily air flow fails to meet regulatory requirements, and the outlet air temperature greatly exceeds the standard of +33 °С. The required air flow rate in case of adjustable ventilation is determined. However, the resultant demands imposed on fan capacity considerably exceed capabilities of the available ventilation equipment: for the time span between 6 and 5 p.m. on the hottest day of the warmest month, the required capacity of a fan in the concurrent operation of two fans makes 273 m3/s. It is suggested to cool air by adiabatic humidification in air washer. Under adiabatic humidification, the outlet air temperature can be reduced on average no less than by 2 °С in warm seasons and by 5–6 °С on the hottest day of the warmest month.

Keywords

Subway, ventilation, temperature balance, occurrence depth, climatic parameters, air cooling, air humidification, warm season.

Issue number: 11
Year: 2018
ISBN:
UDK: 622.4:625.42
DOI: 10.25018/0236-1493-2018-11-0-63-69
Authors: Alferova E. L., Lugin I. V.

About authors: Alferova E.L., Junior Researcher, e-mail: alferova@mosk.ru, Lugin I.V., Candidate of Technical Sciences, Assistant Professor, Senior Researcher, Chinakal Institute of Mining of Siberian Branch of Russian Academy of Sciences, 630091, Novosibirsk, Russia.

REFERENCES:

1. Kim M., Braatz R. D., Kim J. T., Yoo C. Indoor air quality control for improving passenger health in subway platforms using an outdoor air quality dependent ventilation system. Building and Environment. 2015. No 92. Pp. 407—417.

2. Kim M., Liu H., Kim J. T., Yoo C. Sensor fault identification and reconstruction of indoor air quality (IAQ) data using a multivariate non-Gaussian model in underground building space. Energy Build. 2013, no 66. Pp. 384—394.

3. Metropoliteny SNG — statistika, available at: www.mrl.ucsb.edu/~yopopov/transit/statistics.html (accessed 20.05.2016).

4. Moskovskiy metropoliten. Godovye otchety, available at: old.mosmetro.ru/press/reports (accessed 20.05.2016).

5. Metromost. Transportnyy zhurnal. Novye vagony metropolitena v 2012—2013 godakh, available at: www.metromost.com/?p=1284 (accessed 20.05.2016).

6. Kiyanitsa L. A. Issledovanie teplovydeleniy po dline linii metropolitena s dvukhputnym tonnelem i stantsiyami zakrytogo tipa [Heat buildup along the line of subway with double-track tunnels and enclosed-type stations], Materialy Vserossiyskoy nauchno-tekhnicheskoy konferentsii «Energosberezhenie i energoeffektivnost' na promyshlennykh predpriyatiyakh i v zhilishchno-kommunal'nom khozyaystve», posvyashchennoy pamyati d-ra tekhn. nauk, professora, A.A. Sandera. Новосибирск, NGASU (Sibstrin), 2016, pp. 123—132. [In Russ].

7. Pavlov N. N. Spravochnik proektirovshchika. Vnutrennie sanitarno-tekhnicheskie ustroystva. Ch. 3. Ventilyatsiya i konditsionirovanie vozdukha. Kn. 1 [Designer’s manual. Internal sanitary-and-engineering installations. Part 3. Air ventilation and conditioning. Book 1], Moscow, Stroyizdat, 1992, 319 p.

8. Lugin I. V., Alferova E. L. Vliyanie godovoy tsiklichnosti izmeneniya teplovogo potoka v grunt na raschetnyy teplovoy balans dvukhputnogo tonnelya metropolitena [Effect of annual cycling of heat flow in soil on the estimated temperature balance in double-track subway tunnel]. Interekspo Geo-Sibir'. 2016. Vol. 2, no 3, pp. 191—196. [In Russ].

9. Krasyuk A. M., Lugin I. V. Eksperimental'noe issledovanie temperatury obdelok tonnelya i massiva okruzhayushchego grunta v metropolitenakh melkogo zalozheniya [Experimental research of temperature in tunnel lining and adjacent rock mass in case of shallow subways]. Gornyy informatsionno-analiticheskiy byulleten’. 2008, no 3, pp. 124—129. [In Russ].

10. Stroitel'naya klimatologiya SP 131.13330.2012. Aktualizirovannaya redaktsiya SNiP 23-01-99* [Construction climatology SP 131.13330.2012. Updated edition of Construction norms and regulations SNiP 23-01-99*], Moscow, 2012.

11. Metropoliteny SP 120.13330.2012. Aktualizirovannaya redaktsiya SNiP 32-02-2003 [Метрополитены СП 120.13330.2012. Актуализированная редакция СНиП 32-02-2003], Moscow, 2012, 267 p.

12. Pogoda i klimat. Klimat Moskvy, available at: http://www.pogodaiklimat.ru/climate/27612.htm (accessed 25.12.2016).

Our partners

Подписка на рассылку

Раз в месяц Вы будете получать информацию о новом номере журнала, новых книгах издательства, а также о конференциях, форумах и других профессиональных мероприятиях.