New retrofit method to improve the thermal performance of natural draft wet cooling towers based on the reconstruction of the aerodynamic field

2019 ◽  
Vol 132 ◽  
pp. 671-680 ◽  
Author(s):  
Xuehong Chen ◽  
Fengzhong Sun ◽  
Youliang Chen ◽  
Ming Gao
Keyword(s):  
Thermal Performance ◽  
Cooling Towers ◽  
Natural Draft ◽  
Aerodynamic Field

scholarly journals A new theoretical method for predicating the part-load performance of natural draft dry cooling towers

2015 ◽  
Vol 91 ◽  
pp. 1106-1115 ◽  
Author(s):  
Huan Ma ◽  
Fengqi Si ◽  
Yu Kong ◽  
Kangping Zhu ◽  
Wensheng Yan
Keyword(s):  
Theoretical Method ◽  
Cooling Towers ◽  
Part Load ◽  
Natural Draft ◽  
Dry Cooling

scholarly journals On Thermal Performance of Seawater Cooling Towers

2010 ◽  
Author(s):  
Mostafa H. Sharqawy ◽  
John H. Lienhard ◽  
Syed M. Zubair
Keyword(s):  
Thermal Conductivity ◽  
Power Generation ◽  
Thermal Performance ◽  
Cooling Tower ◽  
Cooling Towers ◽  
Governing Equations ◽  
Detailed Model ◽  
Salt Deposition ◽  
Transfer Processes ◽  
Mass Transfer Processes

Seawater cooling towers have been used since the 1970’s in power generation and other industries, so as to reduce the consumption of freshwater. The salts in seawater are known to create a number of operational problems including salt deposition, packing blockage, corrosion, and certain environmental impacts from salt drift and blowdown return. In addition, the salinity of seawater affects the thermophysical properties which govern the thermal performance of cooling towers, including vapor pressure, density, specific heat, viscosity, thermal conductivity and surface tension. In this paper, the thermal performance of seawater cooling towers is investigated using a detailed model of a counterflow wet cooling tower. The model takes into consideration the coupled heat and mass transfer processes and does not make any of the conventional Merkel approximations. In addition, the model incorporates the most up-to-date seawater properties in the literature. The model governing equations are solved numerically and its validity is checked by data in the literature. Based on the results of the model, a correction factor is obtained which characterizes the degradation of the cooling tower effectiveness when seawater is used.

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