Blades as the core part of the pump, which can not only influence the hydraulic performance, but also affect the strength of the impeller
. In recent year, plenty of the efforts have been taken in the blade performance optimization.
Measured mass flow ([??]), inlet pressure ([P.sub.in]), inlet temperature ([T.sub.in]), outlet pressure ([P.sub.out]), outlet temperature ([T.sub.out]), and shaft speed ([N.sub.phys]) or impeller
tip speed (U, and impeller
diameter [D.sub.2]) are used with ratio of specific heats ([gamma]) for air to calculate corrected speed ([N.sub.C]), corrected air flow ([[??].sub.corr]), pressure ratio ([[pi].sub.C]), and isentropic efficiency ([[eta].sub.C]), using Equations 1 through 4.
For cast pump components, and especially for the core and impeller
, 3D printing of the sand casting molds now eliminates the need for an entire post-processing step.
It has external impeller
adjustment and the semi-open impeller
design for passage of solids or fines.
The design of desulfurization dust removal centrifugal pump is a single suction impeller
: pump specific speed ns = (3.65n [square root of (Q)])/[H.sup.3/4] = 65.95, hydraulic efficiency [[eta].sub.h] = 1 + 0.0835lg(Q/n)1/3 = 0.860, volumetric efficiency [[eta].sub.v] = 1/(1 + 0.68n-2/3) = 0.960, and mechanical efficiency [[eta].sub.m] = 1 - 0.07 (1/ ([n.sub.s]/100)7/6) = 0.886.
* Efficient, high solids passage impeller
and volute design, coupled to a high torque 4-pole motor (2, 3 and 5 hp).
diameter is a crucial design parameter because it can easily affect the performance of pumps [20-23].
During the past several decades, researches have been carried out experimentally and numerically to study the effects of impeller
or guide vane geometries and operating conditions on pressure pulsations in a mixed-flow pump.
Being the component with the highest level of contact with transferred liquid, the material used in the impeller
is a crucial factor as it is heavily affected by wear and erosion-corrosion.
Large centrifugal impeller
compressors are commonplace throughout the petrochemical sector, where they usually operate on a continuous duty basis.
Most J-Series pumps can quickly be converted from High Volume to High Head (or vice-versa) by merely changing the impeller
and the suction plate.