Miscellaneous Mechanical ComponentsDOE-HDBK-1018/2-93COOLING TOWERSThe cooling of the water in a cooling tower is accomplished by the direct contact of water andair. This cooling effect is provided primarily by an exchange of latent heat of vaporizationresulting from evaporation of a small amount of water and by a transfer of sensible heat, whichraises the temperature of the air. The heat transferred from the water to the air is dissipated tothe atmosphere.InducedDraftCoolingTowersInduced draft cooling towers, illustrated in Figure 11, are constructed such that the incomingcirculating water is dispersed throughout the cooling tower via a spray header. The spray isdirected down over baffles that are designed to maximize the contact between water and air. Theair is drawn through the baffled area by large circulating fans and causes the evaporation andthe cooling of the water.Figure 11 Induced Draft Cooling TowerRev. 0ME-05Page 19
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