Air Gap between Protective Screen and Surface of Reinforced Concrete Cooling Tower

Abstract:

The article considers the problem of effective protection of the cooling tower shell using the screen with a ventilated air gap. The aim is to determine the optimal parameters of the air gap. In operation, the calculations were performed showing the effects of temperature conditions and the thickness of the gap on the aerodynamic and thermal modes of operation. The article made conclusions based on the done calculations. The optimum thickness of the gap, provided heating air inlet, which provides the ability to assimilate air moisture throughout the layer and delete it in the atmosphere, which in the future will eliminate condensation on the cold surface of a concrete shell.

• Periodical: Advanced Materials Research (Volumes 1044-1045)
• Pages: 457-461
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1044-1045.457
• Online since: October 2014
• Authors: Yury G. Barabanshikov, Svetlana Belyaeva, Maria Antonova*, Mihail Zapoev
• Keywords: Air Gap, Air Ventilated Gap, Cooling Tower, Corrosive Effect, Fiberglass Screen, Vapourproof Screen, Warm Moisture Protection

References

[1] A.S. Denisov, L.A. Gamynina, V.A. Shvyrjaev, A. Yu. Volodina: Study of resistance of concrete in terms of concrete shells tower coolers. Research, construction and operation of cooling. Proceedings coordination meetings on Hydraulic Engineering, Leningrad: Energiya, (1968).

[2] J.F. Batista, R.F.C. Pereira, J.M. Lopes, M.F.M. Carvalho, M.J. Feio and M.A.M. Reis: In situ corrosion control in industrial water systems. Biodegradation, no. 6, vol. 11, (2000), pp.441-448.

DOI: 10.1023/a:1011620023116

[3] Wu Shihong: Zhongguo dianli/Electric Power, vol. 34, no. 12, (2001), pp.19-21.

[4] S.N. Popchenko: Waterproofing of structures and buildings. Leningrad: Stroyizdat, (1981), p.304.

[5] I.A. Rybev: Technology of waterproofing materials. Moscow: Higher School, (1964), p.307.

[6] V.P. Osolovskij: Condition of operation, maintenance, implementation of new technologies and materials in reconstruction of cooling towers. Safety of Energy Facilities, no. 9, (2001), pp.73-82.

[7] T.A. Zatvornitskja, A.S. Magiton, A.O. Zatvornitskja, G.N. Kozlov: New effective materials Emako, for repair and construction of thermal power structures. Safety of Energy Facilities, no. 9, (2001), pp.88-95.

[8] V.P. Osolovskij: Problems of increasing the service life of industrial buildings and structures of energy companies. Safety of Energy Facilities, no. 9, (2001), pp.83-87.

[9] T.N. Terjaeva, V.V. Pershin, V.V. Doroguncov, A.P. Gajdin, P.A. Filippov: Restoring method of thermal insulation and corrosion protection of buildings and structures. Construction of mines and urban underground structures. Proceedings of Russian-Chinese Symposium, (2000).

[10] Schnell Wolf-Dieter: Sanierung von Kuhlturmen. Technologie Bau, no. 3, (2001), pp.79-82, 87.

[11] Frielingsdorf Joachim, Falk Helwig: Schutz vor Kalte und Warme. DE: Elektro und Gebaudetechnik, no. 3, vol. 77, (2002), pp.28-29.

[12] V. Epshtain, J. Zabicky, E. Goncharov, A. Millionschchik, M. Taig: Concrete protection in the aggressive conditions of Sdom on the Dead Sea shore. Bd 1. - Weimar, (2000), p.1/0889-1/0899.

[13] Tollner Fritz, Best Walter: Intelligenter Oberflachenschutz. Betonwerk Fertigteil-Technik, no. 7, vol. 67, (2001), pp.32-36, 38, 40-42, 44.

[14] Zhongguo Dianli: Electric Power, no. 2, vol. 35, (2002), pp.1-5.

[15] V.G. Petrov-Denisov, A.N. Moro, K.V. Guseva, L.A. Gamynina: Thermomoist mode shells cooling towers. Research, construction and operation of cooling. Proceedings coordination meetings on Hydraulic Engineering, Leningrad: Energiya, (1968).

[16] V.A. Kalatuzov: Problems of reliability of reinforced concrete stacks of coolers. Energy, no. 8, (2001), pp.23-26.

[17] S.L. Chernov, I.V. Dolinin, F.P. Duzhih: The retrofit of a reinforced-concrete stack with a backpressure in the air clearance. Thermal Engineering, no. 2, (2002), pp.29-32.

[18] M.V. Petrochenko, D.I. Golubev: Thermal and moisture protection shield of the concrete shell of the cooling tower. Scientific and technical statements SPbSPU, T. 1, no. 89, (2009), pp.65-68.

[19] O.V. Kuntcevich: The concrete of high frost resistance for structures of the far north. Leningrad: Stroyizdat, (1983), p.132.

[20] V.B. Sudakov: Frost resistance of concrete at different ages. Leningrad: Energiya, (1964), p.174.

[21] G.I. Gorchakov, M.M. Kapkin, B.G. Skramtaev: The increase frost resistance of concrete in constructions of industrial and hydraulic structures. Moscow: Stroyizdat, (1965), p.195.

[22] A.V. Lykov, Ju.A. Mihajlov: Theory of heat and mass transfer. Leningrad: Gosenergoizdat, (1963), p.535.

[23] N.V. Churaev: Physico-chemistry of mass transfer processes in porous solids. Moscow: Chemistry, (1990), p.272.

[24] B.S. Farforovskij, V.B. Farforovskij: Cooling the circulating water of thermal power plants. Leningrad: Energiya, (1972), p.112.

[25] N.I. Vatin, D.V. Nemova, P.P. Rymkevich, A.S. Gorshkov: Influence of building envelope thermal protection on heat loss value in the building. Magazine of Civil Engineering, no. 8, (2012), pp.4-14.

DOI: 10.5862/mce.34.1

[26] S.V. Belyaeva, Yu.G. Barabanshchikov: Calculation of air gap between the protective screen and the shell of reinforced concrete cooling tower. Construction of Unique Buildings and Structures, no. 4, (2013), pp.18-28.

[27] M.R. Petrichenko, M.V. Petrochenko, E.B. Yavtushenko: A hydraulically optimum ventilated gap. Scientific and technical statements SPbSPU, no. 159, (2012), pp.221-226.

DOI: 10.5862/mce.37.5

[28] D.V. Nemova: Integrated characteristics of thermogravitational convection in the air layer of ventilated facades. Magazine of Civil Engineering, no. 2, (2013), pp.25-34.

DOI: 10.5862/mce.37.4

[29] M.R. Petrichenko, M.V. Petrochenko: Hydraulics of natural convection flows in building walling with air gap. Magazine of Civil Engineering, no. 8, (2011), pp.51-56.

DOI: 10.5862/mce.26.8