ABB Variable Frequency Drives for cooling systems


Optimize the uptime of your vessel(s) with ABB quality technology.

Optimized operations

Lowering the fuel consumption and reducing emissions with proven ABB technology.


From easy installation to sustainable operation.

A reduction of the pump speed of
10% will save 27% of the
consumed power.

There are always cooling systems on board vessels,such as sea water cooling system and engine room ventilation. These processes are always dimensioned according to the design point so that they can deliver the cooling demand for all the extreme conditions that the vessel may operate in. However, how often do these vessels operate in these extreme conditions? Some of them operate very much in these conditions, but most of the vessels do not approach these conditions in everyday operation.

The easiest and most efficient way to reduce the power consumption is to install a VFD to control the cooling capacity when operating at less than extreme conditions. ABB provides specialized solutions and services to improve the energy efficiency in these processes. Average annual savings are 40-60%. Pumps and fans on board vessels are mainly of a centrifugal type, which means that a speed reduction of 10%, will give 27% power savings.

• Soft starting – no high starting currents causing disturbance on the network
• No process disturbance due to voltage drops; no trips of other electrical devices connected to same bus
• No excessive thermo-mechanical stress on the motor; longer lifetime of the motor
• Immediate start-up without warming-up delays (e.g. steam turbines)
• Controlled and smooth start-up
• Risk of cavitation in the pump is minimized
• Passenger comfort (in air conditioning applications)
• Reliability/technical improvement
• Environmental compliancy
• Lower energy bills

Other solutions with variable frequency drives

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