fresh water generator on board ship

1. PRESENTED
BY
JIBRIN HABIBU

2. OUTLINES
 What is a fresh water generator?
 Important of fresh water generators on ships
 Basic concept of fresh water generator
 primary component
 Conclusion
 QUESTIONS

3. What is a fresh water generator?
Fresh water generator is a machine
that converts salt water from seas and
oceans into fresh water for domestic
uses.
FRESH WATER GENERATOR IS AN AUXILARY ENGINE
OF THE MAIN ENGINE.

4. F.W.G

5. F.WG

6. Important of fresh water generator
on ships
 Ships and ocean liners often take weeks if not months
to complete their voyages, and a lot of fresh water is
usually required to sustain operations for this long.
The crew and passengers need water to drink, cook
and other domestics purpose.

7. Basic concept of fresh water
generator
 The concept of a freshwater
generator is usually quite
simple. First, sea water is
evaporated using a heat
source, separating pure
water from salt, sediment
and other elements.
Generators often use the
diesel engine jacket as a
heat source, although steam
can also be used for this
purpose.

8. Primary components
 There are three main elements in fresh water
generator.
 1. filter
 2. heat exchanger
 3. salinometer

9. filters Is a fine mesh screen which is
used to remove impurities.
 Sea water from sea chest pass
through the filter before
entering the fresh water
generator.

10. Heat exchangers
 There are two heat exchangers
in F.W.G
one evaporates the sea water, and
another condenses the fresh
water vapor into drinking water.
In the condenser element, the
vapor is condensed through
cooling, often simply using cold
seawater to cool the outside of
the unit.

11. F.W.G

12. salinometer
 This is a device used
to monitor the salt
content of the
distilled water. Alarm
is sounded
automatically when
the salt content
exceed the set point
value.

13. conclusion
 FRESH WATER GENERATOR IS ONE OF THE
IMPORTANT MACHINERY ONBOARD A SHIP
BECAUSE IT PRODUCE FRESH WATER FOR
DOMESTIC USES AND ALSO A MEDIUM OF
COOLING FOR THE MAIN ENGINE.
 FRESH WATER GENERATOR PRODUCES 30
TONNES OF FRESH WATER DAILY.

14. Q
 QUESTIONS

15. V
 THANK YOU