Study on thermal performance of new finned heat exchange tube bundles in cooling tower

Abstract The way of heat exchange in the closed wet cooling tower is through the direct contact between the air in the tower and the process water, so as to achieve the purpose of reducing the temperature of the process water. In order to improve the thermal performance of closed wet cooling tower and solve the problem of low heat transfer efficiency, a new elliptical finned tube of cooling tower is proposed, and a mathematical model is established. The process of heat and mass exchange in the tower is studied by numerical method. The effects of wind velocity and spray density on the thermal performance of cooling towers under different structures are analyzed. The results show that the whole velocity field is uniformly distributed, and there is an obvious flow around the cylinder on both sides of the pipe wall, and with the increase of air velocity in the tower, the flow around the cylinder is more obvious, compared with the traditional circular heat exchanger tube, the new elliptical finned tube can significantly improve the thermal performance of the closed wet cooling tower, meet the needs of practical engineering, and reduce the energy consumption of the cooling tower.