Evaporative Cooling Tower Design

An evaporative cooling tower system capable of achieving these goals has the potential to earn points toward energy optimization credit.

Evaporative cooling tower design.

Evaporative cooling towers typically cool water to approximately 85 f but may cool as low as 65 f. Moreover since they use 100 outside air for cooling the right evaporative cooling system can improve indoor air quality while reducing overall operating cost and energy consumption content source. Evaporative cooling uses the fact that water will absorb a relatively large amount of heat in order to evaporate. A cooling tower is a heat rejection device that rejects waste heat to the atmosphere through the cooling of a water stream to a lower temperature.

The required cooling tower design and size will be a function of following values. 46 3774 btu lb dry air download the example file exe1 1 zip this file covers the examples of 1 1 through 1 4. 14 3309 ft3 lb dry air air enthalpy. Evaporating water at the top of a cooling tower creates a downdraft of cooler air that can then be circulated to a specific space or area.

For new buildings design teams can demonstrate the cooling tower s contribution to indoor water reduction with makeup water meters conductivity controllers and overflow alarms and drift eliminators. Evaporative cooling differs from typical air conditioning systems which use vapor compression or absorption refrigeration cycles. They are the most economical approach to cool large amounts of water. Cooling tower thermal design manual air density.

Cooling towers may either use the evaporation of water to remove process heat and cool the working fluid to near the wet bulb air temperature or in the case of closed circuit dry cooling towers rely solely on air to cool the working fluid to near. In hot dry climates evaporative cooling towers will cool outdoor air and circulate it to a space or building. Cooling towers work on the principle of heat rejection. The towers themselves are enclosed steady flow devices for cooling water by evaporation through direct contact with air.

An evaporative cooling tower provides cooling based on a design wet bulb temperature. 0 0714 lb ft3 air specific volume. This is the 43 tower fan evaporative cooler from comfyhome that doubles as an energy efficient air conditioning source and a regular house fan that oscillates. An evaporative cooler also swamp cooler swamp box desert cooler and wet air cooler is a device that cools air through the evaporation of water.

Design considerations of cooling tower. Energy design resources e news april 2010. They extract heat to the atmosphere through evaporative cooling.