hi
as you know the 45 deg. elbow looks like one quarter of a circle and you have two major radii ( Heel & Throat) ; so :
1st two surfaces( top&bottom) are equals to 0.25*(A1 - A2) where:
A1 = pi*Rh^2 ---- Rh : Heel Radius
A2 = pi * Rt^2 ----- Rt: Throat Radius
2nd Areas ( sides) are equals to rectangular areas ; so it's:
A3 = A4 = W*H ,, Now you have 4 surfaces ,,
Good Luck,,
Moath
(Pi*(Center of elbow - od/2)^2-(pi*(Center of elbow+od/2)^2)÷4)÷100000=0.221 Square Meter
9 aboveXP...
Please provide contact surface area of multimill
Area of Duct = (Weidth+Height) X 2 X (Length1+Length2)
Find the area of each face separately and then add them together for the total surface area.
The formula used to calculate the surface of a 90 degree elbow is pi^2 *. This formula is taught in geometry class.
pai/4xdsquare
Lol at your life
(Pi*(Center of elbow - od/2)^2-(pi*(Center of elbow+od/2)^2)÷4)÷100000=0.221 Square Meter
A= 2*(w+h)*(l1+l2) W=width H=Height L1, L2 Length of Elbow
9 aboveXP...
to calculate the area of the front surface of a box you should
You need to:* Calculate the surface area * Calculate the volume * Divide the surface area by the volume
To calculate the square meters of a duct you must add the total length of the straight duct work plus the loss of length from the elbows. A standard elbows measurement is 15 feet for each elbow with a 4 inch diameter or 20 feet for an elbow with a 6 inch diameter.
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.
surface area divided by volume
To calculate the surface area of a shape find the area of each side, and then, add all of the areas together. The sum of the areas is the surface area.