Development and application of cooling and water-saving analysis software for dry-wet hybrid cooling tower

doi:10.16085/j.issn.1000-6613.2020-1475

Abstract

Abstract:

In order to realize comprehensive analysis the cooling and water-saving characteristics of dry-wet hybrid cooling towers, established the check calculation process of dry-wet hybrid cooling tower and based on the Visual Studio development platform, a software for analysis and optimization of cooling, water-saving characteristics of dry-wet hybrid cooling tower was developed. The accuracy of the software was verified by calculating the water-saving and cooling characteristics of a dry-wet hybrid cooling tower in operation. On the basis of the calculation results of plume abatement and water saving, according to the standard dry-wet hybrid plume abatement cooling tower acceptance test code, the fogging frequency curves, water consumption curves, tower plume indictor and cooling characteristic curves were generated. Thus, the optimum operating condition of the dry-wet hybrid cooling tower was determined. At the same time, the coupling effects of design dry section radiator area on the plume abatement, water-saving and cooling characteristics of the cooling tower were compared and analyzed by using the developed software, and the influence of the louver opening on the performance of the dry-wet hybrid cooling tower was analyzed, which can provide instrumental software support for the operation optimization and design optimization of the dry-wet hybrid cooling tower.

Key words: dry-wet hybrid cooling tower, evaporation, optimal design, computer simulation, cooling and water-saving analysis software

摘要：

为实现对干湿联合冷却塔冷却特性、节水特性的综合分析，编制干湿联合冷却塔校核计算流程，基于Visual Studio开发平台，本文开发了干湿联合冷却塔冷却节水特性分析优化软件。通过对某在运干湿联合冷却塔进行冷却节水特性计算，验证了所开发软件计算结果的准确性；在消雾节水计算结果基础上，对标干湿联合消雾冷却塔验收测试规程，生成其成雾频率曲线、耗水量曲线、塔雾指数、冷却特性曲线，综合分析其消雾特性、节水特性及冷却特性，从而确定了干湿联合冷却塔的最佳运行工况。同时运用所开发软件对比分析了某冷却塔设计干段散热面积对其消雾特性、节水特性及冷却特性的耦合影响，并分析了百叶窗开度对干湿联合冷却塔性能的影响，为干湿联合冷却塔的运行优化和设计优化提供了工具性软件支持。

关键词: 干湿联合冷却塔, 蒸发, 优化设计, 计算机模拟, 冷却节水分析软件

CLC Number:

TK-9

Shaohua HU, Shasha GAO, Zhongchao LIU, Yanchun ZHAO, Xiangyang XU, Yuanbin ZHAO. Development and application of cooling and water-saving analysis software for dry-wet hybrid cooling tower[J]. Chemical Industry and Engineering Progress, 2020, 39(S2): 447-453.

胡少华, 高沙沙, 刘忠超, 赵延春, 许向阳, 赵元宾. 干湿联合冷却塔冷却节水分析软件开发及应用[J]. 化工进展, 2020, 39(S2): 447-453.

Figures/Tables 18

References 21

1	王为术, 张斌, 赵鹏飞, 等. 机械通风冷却塔水蒸气冷凝回收方法[J]. 低温与超导, 2015, 43(6): 76-78.
	WANG Weishu, ZHANG Bin, ZHAO Pengfei, et al. A condensate recovery method for water vapor in mechanical wet cooling tower[J]. Cryogenics & Superconductivety, 2015, 43(6): 76-78.
2	徐永君, 鄂学全, 阚常珍. 利用旋转流动提高冷却塔汽水回收效率的实验研究[C]//第十七届全国水动力学研讨会暨第六届全国水动力学学术会议文集, 上海, 2003: 1025-1031.
	XU Yongjun, Xuequan E, KAN Changzhen. Experimental study on increasing water saving efficiency in cooling tower by using swirling flowmethod[C]//17th National Symposium on Hydraulics and 6th National Academic Conference on Hydraulic, Shanghai, 2003: 1025-1031.
3	董京甫. 冷却塔水蒸发损失减少的方法和实施该方法的装置: CN1699908A[P]. 2005-11-23.
	DONG Jingpu. Method for reducing evaporation loss of cooling tower water and device for implementing the same: CN1699908A[P]. 2005-11-23．
4	吕扬. 冷却塔水损失变化规律及节水方法的研究[D]. 济南: 山东大学, 2009.
	Yang LYU. Research on change law of water loss and method of water-saving in cooling towers [D]. Jinan: Shandong University, 2009.
5	王天正, 王佩璋. 自然通风冷却塔内加装高压静电吸浮收水装置的节水技术[J]. 中国电力, 1995(9): 65-67.
	WANG Tianzheng, WANG Peizhang. Water saving technology for installing highvoltage electrostatic suction and water collecting device in natural ventilation cooling tower[J]. Electric Power, 1995(9): 65-67.
6	吴晓敏, 张天敏. 降雾节水型冷却塔的研究开发及应用[J]. 中国石油和化工标准与质量, 2008, 28(10): 41-41.
	WU Xiaomin, ZHANG Tianmin. Research and development and application of fog-saving water-saving cooling tower[J]. China Petroleum and Chemical Standard and Quality, 2008, 28(10): 41-41.
7	李楠. 干湿两用闭式冷却塔的结构设计及性能分析[D]. 济南: 山东建筑大学, 2011.
	LI Nan. Configuration design and performance analysis on dry and wet closed cooling tower[D]. Jinan: Shandong Jianzhu University, 2011.
8	刘乃玲, 李楠, 李伟. 干湿两用冷却塔的结构设计[J]. 制冷, 2010, 29(3): 23-27.
	LIU Nailing, LI Nan, LI Wei. Configuration design on dry and wet cooling tower[J]. Refrigeration, 2010, 29(3): 23-27.
9	贾明晓, 胡三季, 李昊, 等. 冷凝式消雾节水冷却塔消雾节水性能试验研究[J]. 中国电力, 2020, 52(2): 180-184.
	JIA Mingxiao, HU Sanji, LI Hao, et al. Experimental study on performance of plume abatement and water-saving cooling tower condensate method[J]. Electric power, 2020, 52(2): 180-184.
10	李芳, 王景刚, 刘金荣. 热管技术应用于冷却塔节水的理论分析[C]//第三届制冷空调新技术研讨会, 杭州, 2005: 445-449.
	LI Fang, WANG Jinggang, LIU Jinrong. Analysis of saving water in the cooling tower using heat pipe[C]//Third Symposium on New Technologies of Refrigeration and Air Conditioning, Hangzhou, 2005: 445-449.
11	吕梁. 利用静电技术对水蒸气中水分回收的应用探讨[J].节能技术, 2005, 23(6) : 502-504.
	Liang LYU. Study on the application of electrostatic precipitator to the recovery of water in vapor[J]. Energy Conservation Technology, 2005, 23(6): 502-504.
12	LEMOUARI M, BOUMAZAB M, KAABI A. Experimental investigation of the hydraulic characteristics of a counter flow wet cooling tower[J].Energy, 2011, 36(10): 5815-5823.
13	李建锋, 吕俊复. 热力塔系统用于湿冷火电厂余热利用及水回收研究[J].中国电机工程学报, 2010, 30(23): 24-33.
	LI Jianfeng, Junfu LYU. Application of chimney power system in watercooling power plants for waste heat utilization and water recovery[J]. Proceedings of the CSEE, 2010, 30(23): 24-33.
14	HAJIDAVALLOO E,SHAKERI R,MEHRABIAN M A. Thermal performance of cross flow cooling towers in variable wet bulb temperature[J]. Energy Conversion & Management, 2010, 51(6): 1298-1303.
15	BESEKAR S V, NITHIARASU P, SEETHARAMU K N. Experimental investigation of the performance of a counter-flow, packed-bed machanical cooling tower[J]. Energy, 1998, 23(11): 943-947.
16	HEYNS J A, KROGER D G. Experimental inverstigation into the thermal-flow performance characteristics of an evaporative cooler[J]. Applied Thermal Engineering, 2010, 30(5): 492-498.
17	IBRAHIM G A, NABHAN M B W, ANABTAWI M Z. An investigation into a falling film type cooling tower[J]. International Journal of Refrigeration, 1995, 18(8): 557-564.
18	张子倩, 张早校, 张强. 干湿联合冷却系统技术发展现状及展望[J]. 化工进展, DOI: 10.16085/j.issn.1000-6613. 2020-0287.
	ZHANG Ziqian, ZHANG Zaoxiao, ZHANG Qiang. Development and prospect of combined dry and wet cooling system technology[J]. Chemical Industry and Engineering Progress, DOI: 10.16085/j.issn. 1000-6613. 2020-0287..
19	李文娟. 《节水型社会建设“十三五”规划》印发要求完善节水标准体系[J]. 工程建设标准化, 2017(2): 20.
	LI Wenjuan. The 13th five year plan for the construction of water-saving society requires the improvement of water-saving standard system[J]. Standardization of Engineering Construction, 2017(2): 20.
20	Cooling Technology Institute. Acceptance test procedure for wet-dry plume abatement cooling towers. ATC-150(99): 1999[S].
21	王曰锋, 张瑞梅, 刘野. 机械通风冷却塔节水技术方案分析及工程应用[J]. 工业用水与废水, 2019, 50(1): 76-80.
	WANG Yuefeng, ZHANG Ruimei, LIU Ye. Analysis and engineering application of water-saving technical scheme for mechanical draft cooling tower[J]. Industrial water & wastewater, 2019, 50(1): 76-80.

项目	数值	项目	数值
干球温度/℃	0.98	单塔尺寸/m	18.3×18.3
湿球温度/℃	-1.18	风机直径/m	9.75
大气压/kPa	97.1	填料高度/m	1.5
相对湿度/%	64	干区进水比例/%	100
进塔水温/℃	31.3	干区进风量/m³·h^-1	1864600
干区出水温度/℃	28.21	湿区进风量/m³·h^-1	842700
出塔水温/℃	23.89

项目	数值	项目	数值
干球温度/℃	0.98	单塔尺寸/m	18.3×18.3
湿球温度/℃	-1.18	风机直径/m	9.75
大气压/kPa	97.1	填料高度/m	1.5
相对湿度/%	64	干区进水比例/%	100
进塔水温/℃	31.3	干区进风量/m³·h^-1	1864600
干区出水温度/℃	28.21	湿区进风量/m³·h^-1	842700
出塔水温/℃	23.89

项目	数值	项目	数值
干球温度/℃	0.7	单塔尺寸/m	19×19
湿球温度/℃	-0.62	填料高度/m	1.8
大气压/kPa	101.3	干区进水比例/%	45
相对湿度/%	77	干区进风量/m³·h^-1	1899000
进塔水温/℃	29	湿区进风量/m³·h^-1	1362000
出塔水温/℃	19	单塔循环水量/m³·h^-1	4800

项目	数值	项目	数值
干球温度/℃	0.7	单塔尺寸/m	19×19
湿球温度/℃	-0.62	填料高度/m	1.8
大气压/kPa	101.3	干区进水比例/%	45
相对湿度/%	77	干区进风量/m³·h^-1	1899000
进塔水温/℃	29	湿区进风量/m³·h^-1	1362000
出塔水温/℃	19	单塔循环水量/m³·h^-1	4800

散热器高度/m	干区出水温度/℃	湿区进水温度/℃	出塔水温/℃
2.7	25.86	27.587	20.17
5.4	25.33	27.348	19.70
6.7	25.29	27.33	19.04