Reducing energy consumption and how this can contribute to profitability is an important issue for the offshore and marine industry to consider. Castle Pumps have a range of solutions that can have a considerable impact on vessel owners’ bottom line.
The sea water cooling pump systems in a vessel’s engine room are often designed to cope with worst-case scenarios; they continuously operate as though the sea water temperature is at around 40 degrees Celsius. However, in most cases it is unlikely that the vessel is operating in such conditions, and therefore the pumping system is working inefficiently and energy consumption is much above actual requirements.
To ensure that on board energy costs are not unnecessarily inflated, Azcue Pumps have the ability to control pump speed and energy consumption via AC frequency inverters. A frequency drive can provide savings of up to 80%, substantially reducing the on-board energy costs for vessel owners, with a typical payback period of one year. These frequency inverters reduce fuel consumption, limit mechanical stress, lower CO2 emissions and enable the pumps to have a longer lifetime.
Furthermore, the use of a frequency inverter also reduces the wear on spare parts meaning lower maintenance costs and a reduction in pump spare purchases. It also reduces the risk of cavitation as the NPSH needed is reduced with the pump operating at its best efficiency point.