It is defined as the temperature of a parcel of air cooled to saturation (100% relative humidity) by the evaporation of water into it.ĭry bulb temperature: Dry Bulb Temperature refers to the ambient air temperature. Wet bulb temperature: Wet-bulb temperature (WBT) is the temperature measured by a thermometer covered in water-soaked cloth/muslin over which air is passed. Prior to know what is cooling tower approach and cooling tower range, let us know what is wet bulb temperature and dry bulb temperature. Let go deep and be familiar with these terminologies and derive cooling tower efficiency. Cooling tower performance depends on various parameters which are cooling tower approach, range. Δt = Temperature difference between inlet and outletĪs you had read, there are different cooling tower term which are associated with the equation to derive cooling tower equations. COC = Cycle of ConcentrationĬoncentration of Cycle :This is dimensionless number and it is ration difference between parameter in solid of cooling water and solid in makeup water. Δt = Temperature difference between inlet and outlet 3. Cooling tower makeup calculation Water Make Up = D + E +Bī = Blow loss 2.
Makeup water:- Water quality which is added to maintain level of cooling tower which is lost due to drifting and evaporative loss while cooling tower operation is called makeup water.Ĭooling Tower Approach 1.
Nozzles: Hot water is sprayed through this device to increase surface area of water and to distribute water evenly in cooling tower Louvers : Horizontals in a cooling tower wall to provide the opening through which enters into system falling water within the tower. Concentration : The process of increasing solids per unit volume of ncentration of liquid in cooling towers according due to evaporation that cools the water.īlow Down To maintain TDS/ concentration of salt water discharged/removed from the system of cooling tower is known as cooling tower blowdown water.Įvaporation Loss : During operation, due air and hot water inter Water evaporated from circulating water into atmosphere.ĭrift eliminators : To Minimize the water drifted with air, drift eliminator and hence water loss in cooling water.Ĭooling water : Water circulated through cooling the system to cooling system remove heat from areas.Įxhaust Air : The mixture of air and its vapor leaving the cooling tower system.
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