04-08: Update on the Impact of Water Immersion for Pultruded FRP Cooling Tower Water Blowdown Treatment

04-08: Update on the Impact of Water Immersion for Pultruded FRP Cooling Tower Water Blowdown TreatmentThe development of CTI Standard 137 generated some questions regarding the performance of pultruded structural shapes in a water immersion environment. No data existed for pultruded Fiberglass Reinforced Plastic (FRP), but there was some concern regarding a reduction of properties. Three pultruders who supply the Cooling Tower Industry with structural shapes submitted samples for a water immersion analysis that has been underway with periodic testing

Cooling towers are the largest water using utility in buildings

A project was started in which the water distribution system and the splash pack grids of four existing natural draft cooling towers at a large petrochemical plant were to be replaced without shutting down the water flow to the cooling towers

Closed loop cooling systems deliver many benefits compared to traditional open loop systems

but methods to do so require careful planning and selection

This list of potentially corrosive conditions is a rather heterogeneous one

innovative companies have been improving this 'standard' product and have engineered traveling water screens that have an extended life

misting and blowdown

mechanical cleaning and chemical cleaning affect wetted surface lifetimes

Existing technology for biological control of cooling water systems uses costly

The numerous design assumptions required for San Juan and the assumptions required for similar applications are reviewed

This paper discusses the differences between bromine and chlorine chemistry especially the effects of pH and ammonia

The evaluations were conducted at pH 7