Cooling tower and method for optimizing use of water and electricity
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Sep 10, 2002
Grant Date -
N/A
app pub date -
Oct 11, 2000
filing date -
Oct 11, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A forced air cooling tower includes an upright casing, and elevated water distribution system disposed in an upper portion of the casing and one or more fans for drawing air through the tower. The tower also includes a catch basin for collecting the cooled air and a pump for circulating the cooled water through a condenser and back to the top of the tower and to the water distribution system. The cooling tower also includes a controller and a variable frequency device for regulating the flow of air through the tower. A first temperature sensor senses the temperature T.sub.1 of the hot process water delivered to the water distribution system and a second sensor senses the dry bulb temperature of the air leaving the tower T.sub.dbt2. A third sensor senses the temperature of the cooled water leaving the tower. The controller such as a computer and variable frequency drive controls the speed of the fan to minimize the difference in T.sub.1 and T.sub.dbt2. A submaster control prevents the fan speed from being further reduced when a predetermined T.sub.2 (temperature of the cooled water) is reached.
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