Comparison between Ventilation Modes of Large Direct Air-Cooling System

doi:10.11930/j.issn.1004-9649.2014.4.14.7

Abstract

Abstract: In this paper, a new hybrid ventilation system is introduced to improve the performance of the direct air-cooling systems. Two 1 000-MW direct air-cooling units are taken as the example to compare the hybrid ventilation cooling system with the mechanical and natural ventilation direct air-cooling systems with numerical simulation method. The back pressure variation obtained under typical summer wind speed conditions indicates that the hybrid ventilation direct air-cooling system has better operational economy in light winds and better security performance in strong winds than the mechanical and natural ventilation direct air-cooling systems. Therefore, it is very suitable for using in the areas of bad wind conditions.

Key words: direct air-cooling system, hybrid ventilation, mechanical ventilation, natural draft, numerical simulation

CLC Number:

TK264.1

LEI Ping-he. Comparison between Ventilation Modes of Large Direct Air-Cooling System[J]. Electric Power, 2014, 47(4): 14-21.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2014.4.14.7

https://www.electricpower.com.cn/EN/Y2014/V47/I4/14

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