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WÄRTSILÄ SERCK COMO MULTI STAGE FLASH (MSF) EVAPORATOR FOR MARINE APPLICATIONS - 4 Pages

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Catalogue excerpts

Waste, Oil & Fresh Water Management WÄRTSILÄ SERCK COMO MULTI STAGE FLASH (MSF) EVAPORATOR FOR MARINE APPLICATIONS Wärtsilä develops, manufactures and distributes thermal desalination plants for cruise ships, merchant vessels and offshore applications. We offer an extensive range of services, from commissioning and start-up throughout the operational lifecycle, including maintenance and the supply of spare parts. Wärtsilä’s multi-stage flash principle is the most reliable thermal seawater desalination process in the world, and is the only evaporation principle where heat transfer and evaporation are strictly separated. This minimises the risk of scaling and reduces maintenance costs. The Wärtsilä Serck Como multi-stage flash (MSF) evaporator is utilised for producing fresh water from seawater, well water or industrial water. A special advantage of the multistage flash technology is that the specific heat consumption (or thermal efficiency) can be continuously adapted to the individual requirements of each application. The produced distillate has a very low salt content which makes it suitable as technical water (e.g. boiler feed water). The distillate quality and quantity are independent from the seawater temperature which makes the MSF technology a reliable source for freshwater. CHARACTERISTICS • Capacity up to 1500 t/d. • Steady production of freshwater at seawater temperatures between 0-32°C. • Either steam, engine jacket water or a combination of these can be utilised for heating. • Full-automatic or semi-automatic operation.

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ADVANTAGES • Heat transfer and evaporation takes place in different areas, resulting in a minimised risk of scaling (flash). • Sturdy construction with low maintenance demands resulting in high availability. • Lowest sensitivity to malfunction or maloperation. • Components in contact with seawater or distillate are manufactured with corrosion resistant materials (e.g. copper- nickel). • Technology with the lowest lifecycle costs. • Flexible dimensions allow for the best utilisation of space. • Operating frequency converter for pumps saves energy. • Salt content of the distillate ≤ 4 ppm NaCI.

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PRINCIPLE OF OPERATION After leaving the first stage condenser (3), the seawater flows through the brine heater (1), where the heat input to the plant (steam or engine jacket water) causes a further temperature increase. The seawater leaves the brine heater (1) and enters the first flash chamber (2), reaching a brine top temperature of approx. 80°C. At this point the pressure of the incoming seawater is suddenly reduced, by means of an orifice, below its equilibrium vapour pressure resulting in explosive boiling or evaporation (flashing). The pure vapour produced is then condensed giving up its...

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EXPERIENCE AND RECENT SUCCESSES QUEEN VICTORIA CORAL PRINCESS Scope of supply: 2 x Wärtsilä Serck Como MSF evaporators each with a capacity of 650m3/day and 6 stages. Scope of supply: 3 x Wärtsilä Serck Como MSF evaporators each with a capacity of 600m3/day and 6 stages. Scope of supply: 4 x Wärtsilä Serck Como MSF evaporators each with a capacity of 825m3/day and 8 stages. WÄRTSILÄ® is a registered trademark. Copyright © 2014 Wärtsilä Corporation. Specifications are subject to change without prior notice. Wärtsilä supports its customers throughout the lifecycle of their installations by optimizing...

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