Efficient Pumps And VFDs Bring Fast Payback On A Rhode Island Plant Upgrade

A Rhode Island town expects payback of 3 1/2 years on an extensive project to upgrade inefficient pumps and install variable-frequency drives.
Efficient Pumps And VFDs Bring Fast Payback On A Rhode Island Plant Upgrade
New motors and pump at the Marshall Avenue Booster Pump Station. New motors with variable-frequency drives were placed on all three pumps at this station, and one pump (painted blue) was replaced with a smaller pump suitable for lower flows.

Easing the ratepayers’ burden and shrinking the carbon footprint were the twin objectives of the Cumberland Water Department’s modernization and upgrade of four pumping stations, including the main water treatment plant.

Improvements to date have earned an incentive payment...

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