DUCT DIAMETER SELECTION
DUCT DIAMETER SELECTION
(OP)
I WOULD LIKE TO KNOW,IF THERE IS A FREE TECHINCAL DATA IN SOMEWHERE ABOUT HOW TO CALCULATE THE DUCT DIAMETER OR CROSS SECTIONAL AREA WHILE CONSIDERING THE FLOW RATE AND THE PRESSURE. FOR INSTANCE, IN A VESSEL WE HAVE 2 ELECTRIC DRIVEN FANS WHICH SUPPLY 92,000 cbm/h AIR @ ATMOSPHERIC CONDITION AND WE HAVE TO CALCULATE THE MAIN DUCT(s) TO THE MAIN ENGINE. WHAT SHOULD BE CONSIDERED ? THE OPENINGS ON THE DUCT ? THE EXHAUST OPENINGS FROM THE FUNNEL ? THANKS IN ADVANCE
GOKHAN
GOKHAN





RE: DUCT DIAMETER SELECTION
1 Available Space
2 Pressure capability of the fan.
ASHRAE has published pressure drop tables for round duct.
Also the Trane Corporation has a nomographic device called a ductilator which will tell you the static pressure drop of the duct. I suggest you contact them. They can also help you size the fan if you need that also.
Sincerely,
Stan Simon
RE: DUCT DIAMETER SELECTION