A= 2*(w+h)*(l1+l2)
W=width
H=Height
L1, L2 Length of Elbow
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In order to calculate the area of HVAC duct offset and elbow, one must first measure the distance between the two. Then the elbow must be larger than any cross section to maintain airflow.
(Width 1 + Height 1 + Width 2 + Height 2)* Length
To calculate the formula for duct sizing divide the room load by the whole house load. Next multiply those results by the equipment CFM.
what r the advantages of side view of duct ? why we plot side view of duct ?
width always comes first