Results of experimental and computational analysis of air flow in the circle channels of the air-cooled condensers of steam power plants
Authors: Fedorov V.A., Milman О.О., Ananyev P.A., Ptahin A.V., Zhinov A.A. , Karyshev A.K., Shevelev D.V. | Published: 06.10.2015 |
Published in issue: #5(104)/2015 | |
Category: Power Engineering | |
Keywords: air-cooled condenser, steam turbine plant, water steam, speed, pulsations, circle channel |
The article describes experimental and computational methods used for calculating some current aerodynamic characteristics of the air-cooled condenser circle channel. It also determines the temperature fields at the diffusor outlet as well as the condenser surface of an area-averaged heat-transfer coefficient as a function of the air speed at the inlet of the heat-exchange units. The authors registered spatial velocity fields at both the inlet and outlet of the air-cooled condenser circle channels as well as an active pulsation of the air speed. The authors establish the technical basis for estimating metering and pressure characteristics of both the air-cooled condensers and a heat-transfer coefficient.
References
[1] Mil’man O.O., Fedorov V.A. Vozdushno-kondensatsionnye ustanovki [Air-condensing plant]. Moscow, MPEI Publ., 2002.
[2] Fedorov V.A., Mil’man O.O., Artemov V.I., Fedorov D.V., Anan’ev P.A., Kiryukhina A.A. A recent trend in developing high performance capacitors of the steam-turbine plants. MPEI Vestnik, 2010, no. 3, pp. 37-43 (in Russ.).
[3] Fedorov V.A., Mil’man O.O., Anan’ev P.A., Dunaev S.N., Kolesnikov N.V., Shifrin B.A. Thermohydraulic processes in air-cooled condensers of the steam-turbine plants. MPEI Vestnik, 2012, no. 2, pp. 5-12 (in Russ.).
[4] Milman O.O., Spalding D.B., Fedorov V.A. Steam condensation in parallel channels with nonuniform heat removal in different zones of heat-exchange surface. International Journal of Heat and Mass Transfer, 2012, vol. 55, iss. 21-22, pp. 6054-6059.
[5] Kryukov N.P. Apparaty vozdushnogo okhlazhdeniya [Air-cooled heat exchanger]. Moscow, Khimiya Publ., 1983. 168 p.
[6] Xiufeng Gao, Chengwei Zhang, Jinjia Wei, Bo Yu. Numerical simulation of heat transfer performance of an air-cooled steam condenser in a thermal power plant. China, Heat Mass Transfer, 2009, pp. 1423-1433.
[7] Rogers J.A. McDermott Technology, Inc., K.K. Won, Hudson products Corp., W.Stang, Argium Inc. Validation of CFD Models for Evaluating Hot-Air Recirculation in Air-Cooled Heat Exchangers. Houston, Texas, McDermott Technology Inc., 1999, no. 5, pp. 65-79.
[8] Yang Li Jun, Du Xiao Ze, Zhang Hui, Yang Yong Ping. Numerical investigation on the cluster effect of an array of axial flow fans for air-cooled condensers in a power plant. China, Engineering Thermophysics, 2011, no. 21, pp. 2272-2280.
[9] Owen M.T.F., Kroger D.G. Numerical Investigation of Air-Cooled Steam Condenser Performance under Windy Conditions. California Energy Commission, PIER Energy-Related Environmental Research Program, 2011.
[10] Loytsyanskiy L.G. Mekhanika zhidkosti i gaza [Fluid mechanics]. Moscow, Drofa Publ., 2003.
[11] Chung TJ. Computational Fluid Dynamics. Cambridge University Press, 2002. 1012 p.
[12] Abramovich G.N. Prikladnaya gazovaya dinamika [Applied gas dynamics]. Moscow, Izd. Tekhniko-teoreticheskoy literatury Publ., 1953, 736 p.
[13] Patankar S.V. Numerical Heat Transfer and Fluid Flow. N.Y., Hemisphere Publishing Corporation, Taylor & Francis Group, 1980.