LOSSES IN FITTINGS
The fittings investigated by the method mentioned earlier, and shown diagrammatically in Fig.9,
were :
(a) Bend, (b) Plain Elbow, (c) Cascaded Elbow, (d) 10 ft length of sound absorbing pipe followed
by bend.
The rate of flow was kept constant throughout these tests by adjusting the diaphragm value on the fan
outlet.