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MEP CONSTRUCTION MANAGER

what is the required velocity and friction losses in duct design

Arif Iqubal Ajazi

HVAC Engineer at Eastern International,Bukhatir Group, Sharjah (SHJ)

6mo

As per ASHRAE design of duct base upon wht type of building u hv either residential,Commercial & industrial.Different hv different air Velocity(FPM).

MD ASHFAQUE

MEP Supervisor, Productions engineer, Diploma in Mechanical Engineer , project's co-ordinator , Mechanical Technician , contact+97470783701,+918700834160

6mo

For designing branch ductwork I shoot for under .08"/100ft and for ducts mains over occupied areas with CFM over 8,000 CFM, then I use 1600FPM.

MD ASHFAQUE

MEP Supervisor, Productions engineer, Diploma in Mechanical Engineer , project's co-ordinator , Mechanical Technician , contact+97470783701,+918700834160

6mo

Duct systems are divided into three pressure classifications A velocity of 1,000 to 1,500 fpm for main ducts and a velocity of 700 to 1,000 fpm for the branch take offs are recommended.

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MD ASHFAQUE

MEP Supervisor, Productions engineer, Diploma in Mechanical Engineer , project's co-ordinator , Mechanical Technician , contact+97470783701,+918700834160

6mo

Air should be conveyed as directly as possible to save space, power and material. Sudden changes in directions should be avoided. Diverging sections should be gradual. Aspect ratio should be as close to 1.0 as possible.

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