Crosswinds Effect on the Thermal Performance of Wet Cooling Towers Under Variable Operating Conditions

2017 International Conference on Power and Energy Engineering

Chen, You Liang^1 ; Shi, Yong Feng^1 ; Hao, Jian Gang^1 ; Chang, Hao^1 ; Sun, Feng Zhong^2

Huadian Electric Power Research Institute, No. 2 Xiyuan Ninth Road, Hangzhou

310030, China^1

Shandong University, No. 17923 Jingshi Road, Jinan

250061, China^2

关键词: Cooling performance;    Natural draft wet cooling towers;    Operating parameters;    Temperature and humidities;    Temperature decrease;    Temperature increase;    Thermal Performance;    Variable operating condition;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/114/1/012007/pdf
DOI  :  10.1088/1755-1315/114/1/012007

来源: IOP

【 摘 要 】

In order to quantitatively analyze the influence of the variable operating parameters on the cooling performance of natural draft wet cooling towers (NDWCTs), a hot model test system was set up with adjustable ambient temperature and humidity, circulating water flowrate and temperature. In order to apply the hot model test results to the real tower, the crosswind Froude number is defined. The results show that the crosswind has a negative effect on the thermal performance of the cooling tower, and there is a critical crosswind velocity corresponding to the lowest cooling efficiency. According to the crosswind Froude number similarity, when the ambient temperature decreases, or the circulating water flowrate and temperature increase, the cooling tower draft force will increase, and the critical crosswind velocity will increase correspondingly.