Patent ID: 7726138

Claim:
A water production system for efficiently making potable water in an environment of humid air comprising: at least one heat exchanger in which a cooling fluid is drawn through internally by a negative pressure siphon, said at least one heat exchanger being disposed in a path of the humid air so that the humid air flows externally on the at least one heat exchanger to condense water vapor from the humid air and produce potable water; means for controlling the volume of the cooling fluid passing through the at least one heat exchanger in response to an amount of heat absorbed by the at least one heat exchanger in the process of condensing water vapor from the humid air; and means for enhancing the rate of at which water vapor is condensed from the humid air, the means for controlling the volume of the cooling fluid passing through the at least one heat exchanger comprises: at least one inlet reservoir open to the environment for receiving the cooling fluid, said at least one inlet reservoir comprises at least one float valve for maintaining a volume of cooling water in said inlet reservoir at a predetermined inlet upper level; at least one outlet reservoir open to the environment for receiving the cooling fluid discharged from the heat exchanger, said at least one outlet reservoir comprises a controller for controlling an outlet upper level that is below the inlet upper level; and the at least one heat exchanger has a cooling fluid circuit extending from the inlet reservoir through the heat exchanger to the outlet reservoir, the inlet end of the cooling fluid circuit is disposed below the inlet upper level, and the outlet end of the cooling fluid circuit is disposed below the outlet upper level, whereby, a regulated flow of cooling fluid is siphoned through the cooling fluid circuit by a vacuum created when the controller lowers the outlet upper level in the outlet reservoir in response to the temperature of the cooling fluid at the outlet end of the water circuit, wherein the controller comprises an actuated valve, for regulating the release of cooling fluid from the outlet reservoir and adjusting the outlet upper level, operably connected that is responsive to the temperature of the cooling fluid in the outlet reservoir.