Numerical Investigation of Recirculation of Air-Cooled Condensers for a Large Power Plant

Abstract:

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In order to minimize the recirculation to ensure normal operation of the air-cooled condensers (ACC) system, the recirculation phenomenon and its dependence on ambient winds are numerically simulated by using the computational fluid dynamics code, FLUENT. Under the constant ambient temperature, the effects of different wind speed and wind direction on the recirculation are qualitatively considered by applying the concept of the recirculation rate. The mechanism of occurrence of recirculation are presented and analyzed. It was found that when considering about the existing and normally operating power plants, the recirculation is more sensitive to wind direction and wind speed. Based on the above results, three improved measures increasing the wind-wall height and accelerating the rotational speed of the fans near the edge of the ACC platform and lengthen or widen the platform are developed to effectively reduce the recirculation.

Info:

Periodical:

Advanced Materials Research (Volumes 516-517)

Edited by:

Jinyue Yan, Charles C. Zhou, Rutang Liao and Jianwen Wang

Pages:

355-359

DOI:

10.4028/www.scientific.net/AMR.516-517.355

Citation:

W. L. Zhao et al., "Numerical Investigation of Recirculation of Air-Cooled Condensers for a Large Power Plant", Advanced Materials Research, Vols. 516-517, pp. 355-359, 2012

Online since:

May 2012

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Price:

$35.00

[1] Wanli Zhao, Experimental Research on Thermal Flow Field Characteristics of a Direct Air-cooled System for a Large Power Plant[D], Doctoral Dissertation, Beijing University of Aeronautics and Astronautics, Dec. (2008).

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DOI: 10.1109/appeec.2009.4918319

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DOI: 10.1016/j.applthermaleng.2008.09.011

[6] Zhao Wanli, Liu Peiqing, Experimental Investigation on Thermal Flow Field Characteristics of a Direct Air-cooled System for a Large Power Plant[J], Journal of Basic Science and Engineering, 2009, 17(4): 605-613.

DOI: 10.1109/appeec.2009.4918319

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DOI: 10.1109/appeec.2009.4918319

[8] Wanli Zhao, Peiqing Liu, The Experimental Investigation of Thermal Flow Field on Recirculation of Air-cooled Tower for a Power Plant, Asia-Pacific Power and Energy Engineering Conference 2011[C] Mar23-25, 2011, Wuhan, China.

DOI: 10.1109/appeec.2011.5747709

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