Addressing Water Consumption of Evaporative Coolers with Greywater

Evaluating the potential use of direct evaporative cooling in Australia

“…• Evaporative coolers require a constant supply of water to wet the pads, which may lead to high water consumption. Varying with climate, it is estimated that water consumption due to evaporative coolers ranges from 200 to 650 L/household/day [26]. A previous study also indicated that potentially up to 1800 ML/year of water could be saved in Victoria, Australia, by optimizing the water consumption of evaporative air coolers in the non-residential sector [27].…”

Reverse Osmose Effluent as an Alternative for Air Conditioning in Technology Parks

“…Nevertheless, this utilization carries substantial implications for water and energy consumption, especially for air dehumidification, particularly in regions characterized by water scarcity and predominantly hot climates (Luqman & Al-Ansari, 2021). Depending on the water efficiency rating of an evaporative cooler and the prevailing local climate conditions, water consumption for cooling a building can vary from 450 to 850 litters per day (Sahai, 2012;Sahai et al, 2012), which further escalation in buildings experiencing high occupancy rates. Yan et al (2010) undertook pilot-scale research investigating the use of ultrafiltration (UF) followed by reverse osmosis (RO) to treat the blowdown, which refers to the concentrated cooling water discharged by cooling towers, with the aim of reintroducing it into the cooling system.…”