84-08: Field Measurements of Chiller Heat Transfer CoefficientsField measurements can be made to determine the heat transfer coefficient of operating chiller condensers. The heat transfer coefficient can be used to identify condenser fouling, a major cause of increased energy usage in chiller systems. Case studies are used to show how heat transfer coefficients can be used to detect fouling of condensers and the economic impact of condenser fouling on chiller operation.

potable water sourced outbreaks and discusses the Bronx outbreak from those perspectives

At present

Improving the performance of heat sink systems can generate considerable gains ofplant output by increasing the overall plant efficiency

particle material

explain how they are designed

and economic considerations

A laboratory investigation was undertaken to assess the performance of a conventional HEDP-Zinc package and HEDP-Low Zinc package and a proprietary Phosphonate-Low Zinc (PPLZ) package relative to that of the existing program

virtually all reclaim waters contain elevated concentrations of ammonia

The particle size characterization was performed by passing the wet sample stream through a heated quartz tube to dry the drift droplets followed by separating the particles by size using an Anderson Mark 111™ cascade impactor

From an operational perspective

But this approach has many drawbacks and does not work under certain operating conditions

The “Stabilized Phosphate” category of cooling water treatments has become an industry standard since the banning of chromate inhibitors in the late 1970’s