Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
November 10, 2009
Patent Application Number
11800321
Date Filed
May 4, 2007
Patent Primary Examiner
Patent abstract
In a gravity fed cooling tower liquid return system having a common header with a plurality of valved sub-headers, a distributive control system, risers on the sub-headers, and sensor/transmitters on the risers, some of the sensor/transmitters controlling the valves on their respective sub-headers, sensing the liquid level in each of the sub-headers, comparing the sensed liquid levels in the distributive control system, and controlling the liquid levels in the sub-headers in response to the sensed liquid levels.
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