Extra-low Water Consumption System

An interesting variation on a re-circulating system is one which allows use of city water without increasing facilities water consumption by much. It does this by tying the heat exchanger into the domestic water supply in such a location that whenever any water is used for any domestic purposes the light cooling system is also cooled. Depending on where one puts the reservoir it can also provide heating for a solarium or greenhouse too. While it does require a fair sized reservoir, a considerable number of lights can be cooled with very little extra water, which is a great advantage for the areas where water is metered.