16-27: Use Of Large Diameter Fans On Air Cooled Heat Exchangers Iron Rot Attack

16-27: Use Of Large Diameter Fans On Air Cooled Heat Exchangers Iron Rot AttackA significant improvement in air cooled heat exchanger technology was implemented at U. S. Geothermals Neal Hot Springs power plant. Large induced draft cooling tower fans were used to reduce the total number of fans from 270 to 30. O&M and power savings total $1. 6 million dollars present value. Use of VFD controlled direct drive motors yielded additional power savings of $3. 1 million dollars present value. Higher capital first costs were offset by

mechanical and chemical cleaning of process equipment)

This tower's maintenance and operations history

The liquid for the slurries of material can be distilled water

rates of strength degradations are computed for critical components

excessive amounts of cooling water loss requiring "make-up water" has become a larger issue

it seemed more appropri­ate to look at a specific segment of our "Take It For Granted

The spray patterns of eight different nozzles from the international cooling tower market were investigated inside a hall with the result that there are no nozzles available which provide an even water distribution as it is achieved in other industries

In particular power consumption which in some cases may be as low as 15%

But these fans actually available on the market

can usually spell the difference between a satisfied or unsatisfied customer

irrigation

resulting in a significant improvement in overall thermal performance