Solar enhanced natural draft dry cooling tower for geothermal power applications

被引：57
|
作者：
Zou, Zheng [1 ]
Guan, Zhiqiang [1 ]
Gurgenci, Hal [1 ]
Lu, Yuanshen [1 ]
机构：
[1] Univ Queensland, Queensland Geothermal Energy Ctr Excellence, Sch Mech & Min Engn, Brisbane, Qld 4072, Australia
来源：
SOLAR ENERGY | 2012年 / 86卷 / 09期
关键词：
Cooling towers; Solar chimney; Geothermal power plants; Modeling; FLOWS; PLANT;
D O I：
10.1016/j.solener.2012.06.003
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
This paper presents a new concept of hybrid cooling, named solar enhanced natural draft dry cooling tower (SENDDCT), in which solar collectors are added to traditional natural draft dry cooling towers to increase their performance. The purpose of using solar energy in this new cooling system is to increase the suction through the tower so that more air flow is achieved through the compact heat exchangers that cool condensers of a geothermal power plant. For the same size of the cooling tower, more air flow across the heat exchangers means more heat can be rejected by the system. The governing equations for the SENDDCT are similar to those of a conventional natural draft dry cooling tower except that solar heating is added after the heat exchanger bundles. Performance comparisons show that SENDDCT has substantial advantages over conventional natural draft dry cooling towers for geothermal power plants as well as standalone solar chimney power plants. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2686 / 2694
页数：9
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