Affiliation:
1. Department of Mechanical Engineering, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
Abstract
Air-cooled steam condensers (ACSCs) are increasingly employed to reject heat in modern power plants. Unfortunately, these cooling systems become less effective under windy conditions and when ambient temperatures are high. A better understanding of the fundamental air flow patterns about and through such ACSCs is essential if their performance is to be improved under these conditions. The present numerical study models the air flow field about and through a particular ACSC. The performance of the fans is modeled with the aid of a novel numerical approach known as the “actuator disc model.” Distorted air flow patterns that significantly reduce fan performance in certain areas and recirculatory flows that entrain hot plume air are found to be the reasons for poor ACSC performance. It is found that the reduction in fan performance is the main reason for the poor ACSC performance while recirculation of hot plume air only reduces performance by a small amount.
Subject
Mechanical Engineering,Energy Engineering and Power Technology,Aerospace Engineering,Fuel Technology,Nuclear Energy and Engineering
Reference9 articles.
1. Van Aarde, D. J., and Kröger, D. G., 1990, “Vloeiverliese deur ’n A-Raam Vinbuisbundel in ’n Lugverkoelde Kondensator,” M.Sc.Eng thesis, University of Stellenbosch Stellenbosch, South Africa.
2. Lessons Learned From the World’s Largest Air Cooled Condenser;Goldschagg
3. Effect of Inlet Flow Distortions on Fan Performance in Forced Draught Air-Cooled Heat Exchangers;Salta;Heat Recovery Syst. CHP
4. The Influence of Wind on the Performance of Forced Draft Air-Cooled Heat Exchangers;Duvenhage;J. Wind. Eng. Ind. Aerodyn.
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