Page 490 - Chemical process engineering design and economics
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Design of Flow Systems                                        467


            Re        Reynolds number
                      hydraulic radius
            R H
            S         allowable stress
            T         absolute temperature
            v         average velocity
            V         volume
            W         work
            z         elevation

            Greek
            a         kinetic energy correction factor
            p         ratio of the orifice to pipe diameter
            5         annular thickness

            E         roughness
            r)        specific  gravity or efficiency
            0         rotameter-tube taper

            ^         viscosity
            p         density




            Subscripts



            B         brake or buoyant
            D         discharge side of the pump or drag
            F         float or friction
            G         gravity
            h         height

            i         pump inlet
            O         orifice
            p         pressure




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