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Manufacturer: Facet

Fresh Water Generator - Model J (J-10 to J-50)

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SKU: JG_1403

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Models J-10 to J-50

These units are designed to produce fresh water for use on-board. The PECOFacet models J-10 to J-50 produce between 1.5 to 10 m³/day of fresh water. All produced water is monitored by the salinity control system with automatic dumping should the water contain more than 4 ppm of salt.

Operation Description

Hot engine cooling water is pumped by the engine circulating pump through the seawater heater and back to the engine circulating system. This water is not affected in any way except that some heat is removed. This is the heat that boils the seawater in the distilling shell. As this takes place under deep vacuum, the seawater is boiled at a very low temperature. Raw seawater is pumped continuously through the fresh water condenser. Most of the seawater is then discharged to sea. A certain quantity, however, is fed into the distilling shell where it is boiled. The seawater concentrate, or brine, is continuously drawn off from the distilling shell by a venturi ejector and discharged to sea. The vapor or steam, produced by boiling the seawater, passes through a monel mesh separator where any droplets of water or entrained particles are removed. Thus, only pure vapor enters the fresh water condenser section. This vapor passes over the tubes of the fresh water condenser where it is condensed by the cool seawater flowing through the tubes. The resultant fresh water is pumped from there to the storage tank by the fresh water pump. The distilling shell vacuum is maintained by evacuating the non-condensable gases from the shell with a venturi ejector. All fresh water is monitored by the salinity control system with automatic dumping should the water contain more than 4 ppm of salt. Safe design against failure protects valuable freshwater storage from possible salt contamination.

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