Abstract: To enhance the heat transfer and flow，both special-shape tubes including bullet-tube and twist-tube were used in the evaporative condenser，and compared with the existing round-tube. An experimental system wasset up，heat transfer coefficient and power performance of the evaporative condenser were investigated with changing operation parameters. The results indicated that heat transfer coefficient and power performance were better when the sprayed water flow rate ranged 0.05—0.065 kg/(m·s) and airflow velocity ranged 2.6—3.4 m/s. The heat transfer coefficient of the bullet-tube was 9.2%—19.0% higher than that of round-tube，while the power decreased by 2.6%—4.9%. The heat transfer coefficient of the twist-tube was 18.0%—33.1% higher than that of round-tube，and the power increased by 2.6%—4.9%. Finally，the two new types of evaporative condenser were used in industry with obvious energy and water saving.