International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056 Volume: 03 Issue: 04 | Apr-2016 www.irjet.net p-ISSN: 2395-0072 © 2016, IRJET | Impact Factor value: 4.45 | ISO 9001:2008 Certified Journal | Page 1321 PERFORMANCE AND ANALYSIS OF COOLING TOWER A. VIJAYARAGAVAN 1 ,S. ARUNRAJ 2 , P. PARTHASARTHY 3 ,M.SUNDAR RAJ 4 Mr. A. AKBAR ALI Professor of Assistant Mechanical Engineering Chettinad College of Engineering & Technology, Karur-639 1144 ---------------------------------------------------------------------------------------------------------------------------------------------------------------- Abstract- In thermal power plant one of the main parts is consider, which cools the refrigerant. When cooling the refrigerant, the cold water becomes the hot water. The hot water temperature is reduced by cooling towers. When hot water enters into the induced draft cooling tower and sprayed by nozzles. So hot water is converted into cold water .The effective cooling of water depends upon the dry bulb temperature and wet bulb temperature, size, height of the cooling tower and velocity of air .The project deals with the performance study and analysis of induced draft cooling tower, which is one of the deciding factors used for increasing the power plant efficiency also modelling and analysis of flow using software .A cooling tower is an enclosed device for the evaporative cooling of water by contact with the air. Cooling tower is a heat rejection device. Common application includes cooling the circulating water used in oil refineries, petrochemical, and other chemical plants, thermal power stations and HVAC system for cooling buildings. The efficiency and effectiveness of cooling tower depends on number of parameter like inlet air angle, inlet and outlet temperature of air and water, fill materials, fan speed etc. Keywords: inlet air angle, inlet and outlet temperature of air and water, fill materials, fan speed etc. . LIST OF SYMBOLS T Temperature ºC P Pressure N/mm 2 WBT Wet bulb temperature ºC DBT Dry bulb temperature ºC Q Convective heat transfer KJ/hr V Velocity m/s ᵟa Density of air kg/m 3 Pmotor Motor power KW Mw Mass of water vapour Kg K Overall enthalpy coefficient J/kg C pw Specific heat J/kgK ɛ Efficiency % I.INTRODUCTION The steam thermal power stations are requiring the steam to be condensate to return to the boiler in a liquid phase; i.e., water. The condensation process involves heat rejection from the working fluid, the steam. The heat rejection process requires cold water to be supplied to the condenser. Usually, this cold water is supplied from continuous water resource. This type of cold water supply to the condenser is cold "Open Cooling System". In cases of shortage of the cold water supply for any reason, the designers intend to compensate by using "Closed Cooling System". In such case, the cooling water is circulating in a close loop consisting tower unit to reject the heat from the cooling water to the open atmosphere. In some cases, some percent of the cooling water is added from the available water resources to the closed system to reduce the size of the cooling tower. The percentage of the added water is called mixing ratio. When the mixing ratio is zero, it is completely closed system. When the mixing ratio is 100%, it is an open system.One of the important cooling tower components is the tower fill or packing. The tower till can be classified into two types: film type or splash type. In either case, the main function is to increase the contact area between the cooling water and air and to maximize the resident time for the cooling water in the tower. In general, the film type packing has a denser configuration than do the splash-type fills. Thus less volume of film-type packing is required to remove a given heat load. II.TYPES OF COOLING TOWER This section describes the two main types of cooling towers is  Natural draft cooling tower  Mechanical draft cooling tower