Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors

# Four Useful Centrifugal Pump Calculators for Pump Professionals

Energy Efficiency

# Four Useful Centrifugal Pump Calculators for Pump Professionals

If you are required to perform centrifugal pump calculations in your current job assignment, we think you are going to find this website useful.  The site contains numerous on-line calculators.  At this time, we want to introduce you to four handy, easy-to-use centrifugal pump calculators:

• The Brake Horsepower calculator can be used to determine the required centrifugal pump brake horsepower (BHP) for a given flow rate (Q), head (H), specific gravity (S.G.), and efficiency (Eff). When you enter any four of these variables as inputs, the calculator will automatically determine the fifth variable. This is a handy calculator for sizing centrifugal pump driver requirements.
• The Pump Efficiency with Electric Motor Driver is a unique calculator that can be used to determine the centrifugal pump efficiency (effp) of a motor driven pump. If you know these five inputs:
1. Motor KW,
2. Discharge pressure (Pd),
3. Suction pressure (Ps)
4. Flowrate (Q), and
5. Electric motor efficiency (effm).

the calculator will automatically determine the current pump efficiency. This is a handy calculator for evaluating a centrifugal pump’s hydraulic condition in the field.

• The Specific Speed (US) calculator can be used to determine a centrifugal pump’s specific speed (Ns) if you know the flow rate (Q), head (H), rotational speed (N). If you enter any three of these variables as inputs, the calculator will determine the fourth variable.  A pumps specific speed is an indicator of the basic geometry of the impeller, i.e. low specific speed pumps tend to have large outside diameters and narrow, radial flow passages while high specific speed pumps tend to have small outside diameters and large, more axial flow passages. Pumps of the same specific speed can be scaled up or down for greater or less flow and head requirements.
• The Suction Specific Speed calculator can be used to determine a centrifugal pump’s suction specific speed (Nss) for a given flow rate (Q), suction head required (NPSHr), rotational speed (N). If you enter any three of these variables as inputs, the calculator will determine the fourth variable. A pump’s suction specific speed is an indicator of an impellers flow stability at low flows.

Give these calculators a try and let us know what you think.

# ABB helps business map a route to energy efficiency savings with new online calculator

With the International Energy Agency (IEA)’s 9th Global Conference on 21-22 May in Nairobi, Kenya, approaching fast, businesses across the…

# Let’s heat up Net Zero by 2050 in the U.S. with Naomi Jabbari

Empowering Pumps & Equipment is committed to working towards achieving sustainable development goals as outlined by the UN. We are…

# Net Zero by 2050: The Hydrogen Boom

The first human walked on the moon in 1969 when Apollo 11 lunar module landed on the moon surface using…

## Related Whitepapers

### Specification Tips to Maximize Heat Transfer: Plate and Frame Exchangers

Choosing the right plate and frame heat exchanger for your application Heat exchangers are widely used in various industries including chemical, oil & gas, power…

### Selecting Pump Upgrades and Operating Modifications for Existing Chilled Water System

Problem Natraj Arjunan, engineer at L&T Technology Services in Chennai India, was tasked with reviewing and simulating an existing chilled water system to diagnose system…

### All-New Hydraulic Design of an Electrical Automotive Coolant Pump

CFturbo presentation at ISimT-24 in Munich/Germany! The paper “All-new Pump Design of an Electric Automotive Coolant Pump” describes a joint development between TENGAM Engineering and…

### How to Read a Pump Curve (and Why you Want to)

If you have ever worked with pumps before, be it in an installation, maintenance, or engineering capacity, chances are high you have seen a pump…