What are the basic differences between API -661 and non-API coolers?
Sample differences required for API: – tube diameter minimum 1″ – geometry with regards to fan proximity to bundle – temperature limitations for considering split headers – lateral movement allowance of bundle – sloping on multi-pass condensers – header velocity limitations – minimum header material thickness – minimum nozzle dimensional tolerances, and maximum allowable nozzle loads – tube gauge minimums – restrictions on fan capacity, tip speeds, and motor minimum sizing – natural frequency, vibration limitations – minimum specifications on mechanical design of transmission components – louver minimal construction specifications – limitations on structural steel design, loads, and construction – minimum restrictions on welding procedures – specified noise measurement criteria and guidelines for winterization
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