July 2006

Bonus Report: Heat Transfer Developments

Optimize air-cooled heat exchanger performance

Use these guidelines to troubleshoot and correct cooling problems

Agius, N., Commercial Solutions

If air-cooled heat exchangers (ACHEs) are not meeting the required cooling demands, they need to be examined in the following areas and the necessary data collected. This will allow the end user to make an informed decision on options to improve the particular ACHE situation. Are the fans leaking air? What is the actual pitch? Is it the same as originally designed? What is the actual horsepower (hp) being used? Is there further potential in the motor? What kind of drives are installed – V-belt, timing belt or gearbox? What is the "tip clearance"? Are "inlet bells" installed? Are "seal discs" or "air seals" installed? If not, is the ACHE design lacking seal discs,

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