Knowing how to read a centrifugal pump curve is essential to the health of your system. Running too far out on the curve, or too far back, can cause damage to the pump, excessive energy consumption, and overall poor performance.
Main principles of pumps selection. Calculation of pumps
Selection of the pumping equipment is a crucial point that determines both process parameters and in-use performance of the unit under development. During selection of the type of pump three groups of criteria can be distinguished:
COPs, EERs, and SEERs
This note discusses performances of air conditioning systems, including heat pumps and chillers. It describes the efficiencies of systems so you can estimate how much energy a system may use. The discussion applies equally to residential, commercial, and industrial systems.
IMPORTANT! There are major changes to APEP Policies and Procedures regarding project eligibility and calculation of incentives that become effective January 1, 2018. Applications received on or after January 1, 2018, will be processed with the new Policies and Procedures.
Centrifugal pumps are the most common type of pumps used to move fluids through a system. Centrifugal pumps are used for high flow, low pressure systems. Positive displacement pumps are required for high pressure, low flow systems. In this 2-part GATEKEEPER series, we will discuss how centrifugal pumps work and what information is needed to determine the pump needed for a particular application.
Research on Pump Volute Design Method Using CFD
In this study, a single-stage centrifugal pump was designed. Effects of volute main geometric parameters like throat area, cross-section shape, design rule of spiral development areas, and radial gap between impeller and volute tongue to the performance of pump were carried out using numerical method. The performance curves of pump with different geometric parameters were acquired. Through analysis of these performance curves, a high-efficiency volute design method was developed.
Centrifugal Pump Lexicon
For the normal operating range of centrifugal pumps (n, Q and H all positive), it is sufficient to plot the characteristic curve in the first quadrant of the H-Q coordinate system.Figs. 1 to 4 Characteristic curve
How do we measure the horsepower or kilowatts coming out of the pump? All we have to do is multiply the pump head by the pump’s capacity, and then use a simple conversion number. Let’s take an example: