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07-09: Twenty-Year's of Cooling Water Treatment Experience in ManhattanTwenty years ago, Hartz Mountain was concerned about water quality issues on their new HVAC system. Pollen, dust and insects would surely be scrubbed from the atmosphere by the large roof top cooling tower that was to provide cooling water to a package unit designed to condense water from a nearby commercial building to condition indoor air. The protection provided by the original solution and minimal maintenance are what convinced management to

Cooling towers are often located in areas where a visible plume is objectionable

but this type of confidence or 3rd party validation for published sound levels does not exist within the industry

This paper explores the application of a Life-Cycle Cost Analysis (LCCA) as a useful tool to predict and schedule maintenance and repair tasks for concrete cooling towers

Sulfur dioxide and ferrous sulfate are the reducing agents that are commonly used

A simple mathematical method will be proposed to estimate the cooling tower performance at off-design ambient conditions

Targeted recirculating cooling water "pH" not only dictates the cost of pH adjustment chemicals

An explanation is offered for some of the silica specie reactions that are

This paper will discuss results of current testing and features of the web-based monitoring system with graphs and charts illustrating its performance

and suggests corrective action

pure compression)

is a fairly good biological nutrient medium

resulting in a noticeable reduction of the vibration level introduced by the fan in the supporting structure

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