基于翅片管温度特征的空冷风机群分区控制OA

To explore the industrial implementation of divisional control for air-cooled fan groups,the heat transfer process of finned tubes is simulated,and the tube's temperature distribution laws,especially its characteristic parameter and influencing factors,are obtained.Relying on a 660 MW direct air-cooled unit,a large number of digital temperature sensors arranged on the upper side of the air-cooled condenser are used to capture the characteristic parameter of finned tubes for each fan cooling cell online,and the divisional control strategy of the fan group taking the characteristic parameter as the core is proposed and achieved industrial application,in which the 64 fans are divided into 16 parts to be controlled separately.The operation results show that after the partition control of the air-cooled fan cluster,the power saving rate of the fans can reach over 48.77％,and the effective area of the entire air-cooled condenser increases.The work provides theoretical basis and engineering implementation methods for industrial applications of divisional control of the fan cluster,and presents the improvement for anti-freezing of air condensers and optimization of unit backpressure.