Performance enhancement for the natural draft dry cooling tower under crosswind condition by optimizing the water distribution

被引：47

作者：

Li, Xiaoxiao ^{[1
]}

Xia, Lin ^{[2
]}

Gurgenci, Hal ^{[1
]}

Guan, Zhiqiang ^{[1
]}

机构：

[1] Univ Queensland, Sch Mech & Min Engn, Brisbane, Qld, Australia

[2] Hohai Univ, Coll Water Conservancy & Hydropower Engn, Nanjing, Jiangsu, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2017年 / 107卷

关键词：

Natural draft dry cooling tower; Performance enhancement; Crosswind; Water distribution; THERMO-FLOW PERFORMANCES; VERTICAL DELTA RADIATORS; AMBIENT WINDS; EFFICIENCY; SYSTEM; SIMULATION; DESIGN; LAYOUT; WALLS;

D O I：

10.1016/j.ijheatmasstransfer.2016.11.046

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Crosswind is a big challenge to the cooling performance of natural draft dry cooling towers (NDDCTs) and has attracted a lot of attention in previous research. This study proposed a new method to increase the performance of NDDCT under crosswind conditions by optimizing the hot water mass flow rate in the air-cooled heat exchangers. The 20 m UQ Gatton NDDCT was selected as a case study to test and validate this method. The cooling performance of this cooling tower under crosswind condition was evaluated by the 3-D CFD model. The results show that the crosswind redistributes the air flow and result in a non-uniform heat exchanger performance. By optimizing the hot water mass flow rate among the heat exchanger bundles, the cold fluids and hot fluids of the air-cooled heat exchanger can be better matched. The cooling performance of the NDDCT is increased by 18% when the crosswind speed is 4 m/s. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：271 / 280

页数：10

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