A Study of the Flow and Heat Transfer Performance of a Direct Air-cooled Condenser Sample Unit

A direct air-cooled condenser consists of several direct air-cooled elements. A study of its elements is of major impor-tance. Based on a practical engineering project,the flow and heat transfer performance of a 135 MW direct air-cooled con-denser sample unit has been studied. By using a numerical heat transfer(NHT) software Fluent,a numerical simulation has been performed of the air-cooled sample unit at its design and test operating conditions. The reason why the simulation re-sults differ from the design and test data was analyzed. The simulation,analysis and study of the external air speed and temperature field of the direct air-cooled condenser can be helpful for the optimized design of the systems in question.