Developed by Alfa Laval specifically for use offshore, the Orca range is constructed from titanium and other corrosion-resistant materials to a simple design that ensures a long working life and low operating and maintenance costs.
The core of the equipment is a Plate Heat Exchanger with titanium plates that acts as both an evaporator and a condenser. Thanks to its corrosion resistance, Titanium is the ideal material for seawater desalination systems and, compared to a shell and tube exchanger with its greater surface area and welding, the compact and light weight Orca plate heat exchanger represents a distinctly less expensive proposition.
Over the years, Alfa Laval has built a market leading position in plate technology and its application to desalination processes. Much of the world’s merchant fleet uses Alfa Laval desalination equipment for the generation of potable water on-board. This experience is reflected in the energy-efficiency of the Offshore Orca. For instance, the largest model – the Orca Offshore 70 – consumes just 19 kWh to produce each cubic metre of fresh water. The quality of the water generated complies with World Health Organisation standards with salinity levels of less that 5 parts per million (ppm).
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