Influence of steel tower on the heat transfer characteristics of indirect air cooled radiator
SHI Lei
WANG Jin
XUE Haijun
SHI Cheng
Abstract：By using the numerical heat transfer software FLUENT,the flow and thermal characteristics of the first 2 × 660 MW units indirect air cooled radiator(IACR) in China is numerically simulated,analyzed and studied under natural draft,whose steel-structured air cooling tower is coated with aluminum sheet.Under the performance assessment working condition set in this paper,the difference value of the heat transfer amount of IACR and ventilation volume of steel tower between units with and without horizontal stiffening rings takes up about 2.7％ of the designed heat transfer amount.The heat transfer amount of aluminum plates takes up about 0.6 ％ of the power units' heat rejection amount.The driving force of steel tower decreases as wind speed increases.Hot air in steel tower flow out through cooling column as wind speed is greater than 10m/s.Wind gust through the tower appears as wind speed is greater than 20m/s,and the heat transfer amount of IACR and ventilation volume of steel tower apparently increase.When environmental wind speed is less than 12m/s,heat transfer amount of IACR and air flow rate of steel tower gradually decrease as wind speed increases.When environmental wind speed is greater than 12m/s,heat transfer amount of IACR and air flow rate of steel tower tend to increase as wind speed decreases.When environmental wind speed is greater than 12m/s,heat exchange rate of IACR and air flow rate of steel tower show the tendency of increase as wind speed decreases.
Keywords：steel towerindirect air cooled radiatornumeral simulationair cooling towernatural draftoptimal design
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 70-76 )