In Fig. 5, Sections 1, 2, and 3 respectively represent the ejector’s
entrance, suction, and discharge locations. The driving and suction
flows and the pressures at Points A and C ~Fig. 4! were
measured and the heads at ejector Sections 1 and 3 ~Fig. 5! were
calculated by the energy equation. The friction head losses involved
in energy balance were calculated by the Darcy-Weisbach
equation.