How does a Cooling Tower Work? A cooling tower enhances natural evaporative cooling processes by increasing the contact surface area and time of exposure between the circulating water and ambient air.
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To cool the systems, heat is transferred from the systems to the water stream. This warm water is then pumped to the top of the cooling tower, where it is sprayed or dripped through internal fill (i.e., a
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Technically, wet bulb temperature is important because any increase in entering air wet bulb temperature will increase the minimum temperature to which a tower can perform, and thus, lower its
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Cooling towers are designed according to the highest geographic wet bulb temperatures. This temperature will dictate the minimum performance available by the tower.
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When operating fans are running at minimum speed and the tower supply water temperature is five (5) degrees below the current tower leaving water setpoint, the most lag tower fan shall be turned off.
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Cooling towers operating in economizer mode must produce water temperatures that are at least equal to, or lower than the chilled water temperatures that would otherwise be produced during
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The Texas Commission on Environmental Quality (TCEQ) offers guidelines for designing and operating cooling towers, highlighting practices such as water recycling, minimizing chemical
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These technologies store cool energy in the form of ice at 32°F; the ice absorbs heat during its phase change to water, with a heat of fusion of 144 Btu/lb. Ice storage systems require a charging fluid at
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Use outdoor conditions of 95 degree F dry bulb and 64 degree F wet bulb to size cooling tower capacity. Consider closed loop, evaporative sprayed cooling towers to use in conjunction with heat exchangers
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In this series on water-side economizers, learn about cooling tower temperatures, wet bulbs, and more.
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