Evaporative Cooling Tower Design

They are the most economical approach to cool large amounts of water.

Evaporative cooling tower design. 46 3774 btu lb dry air download the example file exe1 1 zip this file covers the examples of 1 1 through 1 4. 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. Energy design resources e news april 2010. Evaporative cooling differs from typical air conditioning systems which use vapor compression or absorption refrigeration cycles.

14 3309 ft3 lb dry air air enthalpy. When evaporative cooling is used with supplemental dx cooling it can reduce the dx cooling required. Design considerations of cooling tower. 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.

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. Cooling towers work on the principle of heat rejection. In hot dry climates evaporative cooling towers will cool outdoor air and circulate it to a space or building. Cooling tower thermal design manual air density.

The required cooling tower design and size will be a function of following values. 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. They extract heat to the atmosphere through evaporative cooling. An evaporative cooling tower provides cooling based on a design wet bulb temperature.

0 0714 lb ft3 air specific volume. An evaporative cooling tower system capable of achieving these goals has the potential to earn points toward energy optimization credit. For most industrial manufacturing electric power generation and even air conditioning needs cooling towers are a critical element of the design. 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.

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 uses the fact that water will absorb a relatively large amount of heat in order to evaporate. The efficiency of this device depends essentially on climatic conditions in particular the wet bulb temperature and the relative humidity of the ambient air.