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Sasakura Engineering (Japan)

Fresh Water Generator (Vacuum Evaporator)

Sasakura Engineering Co., Ltd. ist der weltweit führende Hersteller von marine Frischwasser-Generatoren (Vakuumverdampfer) mit geschätzt 40% Marktanteil. Die VS-Serie nutzt die Abwärme der Hauptmaschinen-Kühlwasserjacke zur Verdampfung von Seewasser unter Vakuum (ca. 40°C Siedepunkt bei 0,07 bar). Auf praktisch jedem Seeschiff weltweit ist ein FWG installiert — Sasakura oder Alfa Laval sind die beiden dominanten Hersteller.

5-100 t/day freshwater
Capacity
Seawater → Freshwater
Medium

Components & Design

Component data being added…

Technical Data

type Vacuum Evaporator (Plate or Shell & Tube)
variant count approx 5
period start year 1960
drive type Passive (uses engine jacket water waste heat)
construction Titanium/CuNi evaporator plates, vacuum shell, ejector

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Common failures & inspection points

●Evaporator plate scale buildup from high seawater temperature (>32°C tropics)
●Ejector nozzle erosion from seawater
●Demister pad fouling causing salinity in product water
●Vacuum loss from gasket/seal degradation

Service & Maintenance

Chemical descaling every 500-1,000 hrs. Product water salinity check daily (<10 ppm). Ejector nozzle inspection annually. Demister pad cleaning/replacement at drydock.

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Replacement Parts

Sasakura (Osaka, Japan). Lead time: 3-5 weeks Asia, 6-8 weeks elsewhere. Evaporator plates: 8-12 weeks. Keep onboard: descaling chemicals, salinity monitor.
Equipment Model #37744 · ✓ still in production