11-14: Practical Evaluation Of Treatment Chemicals For Scale Inhibition In Open Fans & Associated Equipment

11-14: Practical Evaluation Of Treatment Chemicals For Scale Inhibition In Open Fans & Associated EquipmentIn certain parts of the world seawater has become the makeup water of choice for evaporative cooling water systems. The use of seawater is generally limited by the ability to control scaling of mineral deposits. To address the need for more effective deposit control and the ability to operate at higher cycles of concentration, scale inhibitors were evaluated under evaporative conditions that simulated the operation of a cooling water system. This

Among the water quality factors that determine the ability of a water to support life are the pH

The role of cooling towers in the hydraulic scheme and the re-examination of methods of treatment of these cooling water systems is discussed

we will use the mathematical modeling as the methodology for the determination of the thermal performance of a cooling tower located in an oil refinery in the state of Bahia

This paper will follow the design process and installation then follow up with detailed results

Laboratory studies demonstrated that the selection of specific chemistry for scale and deposit control could materialize in operation of seawater cooling systems at higher concentration factors than is normal practice

Although the paper deals primarily with large electric utility plants

In a recirculated cooling water system

the results from a molybdate based treatment program will be reviewed

Northern States Power Co

Samples of the cooling water were collected

Beginning in September 1975

The water flow to typically 10% of a given tower was shut off after the installation of butterfly valves