17-19: Should EDF Switch from EN 14705 Long Term Performance Tests to ATC-105 Legionnaires' Disease

17-19: Should EDF Switch from EN 14705 Long Term Performance Tests to ATC-105 Legionnaires' DiseaseAs the owner of 32 large cooling towers, EDF has been performing its own thermal performance acceptance tests during the past 30 years. The company invests a lot in verifying as accurately as possible that a cooling tower reaches the guaranteed year average performance. EDF uses a long term test procedure developed by EDF Research department during the 80s. Long Term means data acquisition running from 3 to 9 months which implies specific attention

We report efficacy of CMIT/MIT against microorganisms

This has been found to have the effect of reducing the performance of the packing

As towers discharge water vapor

illustrates damage caused to mechanical components and recommends prevention

Cleaning methods for high-performance film fills are discussed

selection of critical parameters and performance standards

Reviewed July 2011

Underlying matters are Safety

Traced biocides are a major step forward in biocontrol technology

these inefficiencies can be masked by market driven cyclic operation

elevated temperature capability

especially considering the technological advances in VFD's during the last two decades