Chilled water air conditioning systems are commonly used in applications that need large cooling capacity such as hypermarkets, hospitals and factories. This chilled water technology is increasingly being used in residential buildings as well. Additionally, in some areas, chiller systems are actually mandated and required by local building codes for buildings over a certain square footage due to their superior energy efficiency.
If you are not yet convinced that water-chilled climate control is a real and valuable way to cool your garden, maybe a short explanation of how the system works will ease your mind.
Water-chilled climate control uses water, instead of air, to cool a space. A reservoir holds a water and glycol mixture that is circulated throughout the building through pipes. Inside each room, there are air handlers, which work in the same way as traditional air conditioning. The cold water is run over cooling coils inside the air handler and a fan blows the air from the room over the coils.