University of Tehran Journal of Computational Applied Mechanics 2423-6713 45 1 2014 09 01 Effect of Wind on Thermal Performance of Heller Dry Cooling Tower 1 8 52310 10.22059/jcamech.2014.52310 EN Mohammad Ali Ardekani Associate Professor, Iranian Research Organization for Science and Technology (IROST), Tehran, Iran Foad Farhani Assistant Professor, Iranian Research Organization for Science and Technology (IROST), Tehran, Iran Mohsen Mazidi Instructor, Iranian Research Organization for Science and Technology (IROST), Tehran, Iran Journal Article 2014 07 24 In a steam power plant, the temperature of the cooling water leaving the condenser for recycling<br />should decrease. This is achieved in a cooling tower. The Heller cooling tower does not require water<br />for operation, thus, it is a suitable system for use in thermal power plants throughout Iran. Wind is an<br />environmental factor that unfavorably affects the performance of a cooling tower. Previous studies<br />have not considered real prevailing conditions appropriately; their conclusions are incomplete and, at<br />times, contradictory. The present field study of the cooling tower at Montazer-Ghaem Power Plant in<br />the city of Karaj in Iran investigated the effect of wind on the thermal performance of the cooling<br />tower. Wind velocity was measured using blade-and-cup type digital anemometers. The direction of<br />the wind around the cooling tower was determined using tufts. Ultrasonic flow meters and resistance<br />thermometers were used to measure the flow rates and temperatures of the water at the inlet and outlet,<br />respectively. Results show that, despite air suction, no separation occurred at the periphery of the<br />cooling tower. The front cooling sectors that face the wind and the back sectors that do not directly<br />face the wind were more thermally efficient. They transferred about 60% more heat than did the<br />cooling sectors parallel to the wind direction at the periphery of the cooling tower. The results also<br />showed that thermal performance in the front and back cooling sectors increased as the wind velocity<br />increased and that in the peripheral sectors decreased. https://jcamech.ut.ac.ir/article_52310_9aec4b63c59a44b15ff9a5e28e42781e.pdf