Over the past several years, the frequency of fan air flow testing to verify new or existing fan performances in cooling towers and air-cooled heat exchangers has increased. Whether for new or replacement fans, customers want to verify that they are getting all the performances they were promised by the fan manufacturer - (i.e. does the fan air flow test meet or exceed what the fan manufacturer predicted). Proper fan air flow testing, while not an exact science, can usually spell the difference between a satisfied or unsatisfied customer. Two fan testing methods - one for wet cooling towers and one for air cooled heat exchangers - will be discussed in detail as well as examples given of actual performance versus predicted performance.
05-07: Fan Air Flow Testing on Cooling Towers and ACHEs
Robert Giammaruti, Hudson Production Corporation