Colfax: Pump Monitoring for Intelligent Sea Water Cooling
The pump monitoring system CM-1000 Series is now available with a new active valve control functionality. This option delivers energy savings of potentially up to 85 percent. It also reduces maintenance by up to 50 percent and provides safer operation, short term return-on-investment and long term savings for total ownership.
The CM-1000 Series with active valve control utilizes sensors to monitor real-time operating conditions such as temperatures in the freshwater cooling loop, as well as the pumps’ suction and discharge pressure. The sensor signals enable the CM-1000 Series controller to regulate the flow of sea water to the coolers according to varying heat loads from the main engine and generators.
The CM-1000 Series controller checks pump status based on the pumps’ performance curve, then opens and closes valves in the sea water cooling system to adjust the pumps’ duty point for optimal operation. In the case of a 3 x 50% pump setup, Active Valve Control also allows for an intelligent cascading pump operation.
Because valve adjustments are made automatically, the risk for incorrect manual valve settings is eliminated and incremental energy savings and overall system efficiency are enhanced.
Active Valve Control also reduces system complexity on the coolers’ freshwater side, significantly reducing pipe turbulence and essentially allowing the removal of the three-way valve and by-pass line, reducing both equipment cost and their associated maintenance costs.
Designed to work effectively with both 2 x 100% and 3 x 50% pumping configurations, the Smart Technology CM-1000 Series with Active Valve Control also features:
Variable Speed Operation that adjusts and lowers motor and pump speed, providing energy savings between 40 and 80 percent and reducing the loads to provide longer equipment life and minimize maintenance; this replaces the traditional system design that features continuously-running pumps at full speed plus a bypass control. Worst-case conditions (32 °C sea water, full load of all equipment) can still be met.
Condition Monitoring that detects potential wear and/or fault conditions such as bearing damage, misalignment or coupling damage, mechanical seal damage and dry running, to help to prevent catastrophic breakdown and to increase uptime.
Operation Control that extends mean time between failures (MTBF) by avoiding partload and overload operation to decrease bearing load and cavitation occurrences and to provide safe operation and consistent pump performance.
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