Cooling Water Pump Case Study
INCREASING RELIABILITY AND EFFICENCY SAVING £16,000 P.A. IN ELECTRICITY ALONE
A cooling water pump was suffering from vibration and poor efficiency.
The breakdown frequency averaged 5 months. An investigation of the machine found that the wear ring clearances were excessive leading to excessive recirculation causing excessive power consumption.
The demand on the pump had changed and thus the impeller was incorrectly sized.
The pump bowl was lined to reduce friction losses, the bearing bushings and wear rings were replaced with polymeric materials and the tolerances were reduced.
This improved the efficiency of the pump and eliminated the vibration problem. The improved efficiency alone saved the operator £16,000 p.a. in electricity and the improved reliability of the equipment reduced plant downtime and repair costs.
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