Numerical simulation of heat transfer performance of an air-cooled steam condenser in a thermal power plant |
| |
Authors: | Xiufeng Gao Chengwei Zhang Jinjia Wei Bo Yu |
| |
Institution: | (1) State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, 710049 Xi’an, China;(2) Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, China University of Petroleum (Beijing), Beijing, China; |
| |
Abstract: | Numerical simulation of the thermal-flow characteristics and heat transfer performance is made of an air-cooled steam condenser
(ACSC) in a thermal power plant by considering the effects of ambient wind speed and direction, air-cooled platform height,
location of the main factory building and terrain condition. A simplified physical model of the ACSC combined with the measured
data as input parameters is used in the simulation. The wind speed effects on the heat transfer performance and the corresponding
steam turbine back pressure for different heights of the air-cooled platform are obtained. It is found that the turbine back
pressure (absolute pressure) increases with the increase of wind speed and the decrease of platform height. This is because
wind can not only reduce the flowrate in the axial fans, especially at the periphery of the air-cooled platform, due to cross-flow
effects, but also cause an air temperature increase at the fan inlet due to hot air recirculation, resulting in the deterioration
of the heat transfer performance. The hot air recirculation is found to be the dominant factor because the main factory building
is situated on the windward side of the ACSC. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|