Thinking of pump efficiency !!! Pumps taking more power than output !!!
Energy auditing of those pumps should be very 1st thing you have to do.
As we know cost of operating a pump is much higher than buying and maintaining it because 95% cost of operation is incurred by electricity consumption.
Hence energy audit of pump is must to save large amount of energy potential in plants.
Pumping Energy Audit – Steps
- This is the basic step devoted to collection and collation data existing pumping system, pumps, their installation and application along with energy consumption pattern, etc.
- The saving potential is estimated based on this.
- Audit is taken up after the written confirmation from customer. This audit involves:
- Determination of actual pumping requirement at each location from process point of view.
- Study the current installations vis-à-vis actual requirement by observing the basic running parameters and measurement of actual reading of total operating head, discharge and power consumption for each location. High accuracy, calibrated equipments are used for all measurements.
Pumping System Efficiency = Pump Efficiency X Motor Efficiency X Piping Efficiency X Foot Valve Efficiency
Selection of Right Pump
- Calculate total head & required discharge.
- Choose suitable pipe diameter, material and layout to limit frictional losses to max. 10%
- Choose suitable foot valve with ‘K’ factor less than 0.8
- Choose the suitable type of pump set to be used.
- With help of Efficiency Graph provided by firm of pumps, Select a suitable pump with maximum efficiency at Duty Point i.e. matching of Best Efficiency Point with Operating Point so that efficiency zone for the maximum period of pump operation and also ensure that pump works at Peak Load Conditions.