Passive Evaporative Cooling Tower

This can be achieved through use of fountains or more architectural designs such as the evaporative downdraft cooling tower also called a passive cooling tower.

Passive evaporative cooling tower.

In fact plants use their own evaporative cooling process which we refer to as transpiration. Passive evaporative cooling is one of the most efficient and long recognized ways of inducing thermal comfort in predominantly hot and arid climates. Evaporative cooling is most effective in hot and dry climates. For passive cooling the combination of evaporative cooling and wind tower proves to be very effective and can reduce the temperature by up to 12 17 c.

In an induced draft counter flow cooling tower ambient air is drawn upwards through the structure by an axial flow fan mounted on the top of the tower. In hot dry climates evaporative cooling towers will cool outdoor air and circulate it to a space or building. Cooling towers the cooling tower may be used to evaporate precool ventilation air for one or more air handling units ahu reducing the load on the mechanical cooling system. Similar to humans sweating a plant transpires moisture through its stomata.

Passive cooling is a building design approach that focuses on heat gain control and heat dissipation in a building in order to improve the indoor thermal comfort with low or no energy consumption. Analysis and evaluation of a passive evaporative cool tower in conjunction with a solar chimney. Functions of a wind tower the wind tower function based on several principles cooling water in cisterns. This approach works either by preventing heat from entering the interior heat gain prevention or by removing heat from the building natural cooling.

Baruch givoni in passive and low energy ecotechniques 1985. Evaporating water is what creates the cooling and makes evaporative coolers and wind towers work. Evaporative cooling is the most economical concept for cooling of a building. 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.

In addition to passive cooling techniques one of the most common and efficient ways to cool a greenhouse is through evaporative cooling. Passive evaporative cool tower study. Passive direct evaporative cooling can occur anywhere that the evaporatively cooled water can cool a space without the assist of a fan.