Drinkable water is needed in great amounts on a ship because once
they set sail they do not come back to the land for several days and even
weeks. A Fresh Water Generator manufactured in Singapore makes
it possible to convert salt water of sea into sweet drinkable water. This water
is then used for the purpose of drinking, cooking and washing. Not to mention,
ship mechanics demand the use of cool and salt free water in the machinery for
cooling purposes.
There are two things found abundantly in a ship, lots of heat and
lots of water to sail on. So, majorly, a ship fulfils its need of fresh water
by simply heating the salt water through any mean, making it free from salts
and minerals. Typically, the heat used in the process comes from the engine of
the ship. There is a catch by the way, as it is known that water boils at 100
degrees. The engine of ship produces only as much heat as to click 70. This is
clearly insufficient for a Fresh Water
Generator to produce pure drinking water. In order to overcome this
problem, the engineering geniuses found out a way to decrease the pressure of
atmosphere inside the heating chamber to kick the heating process up a notch. Atmospheric
pressure is decreased by creating a vacuum that also cools the evaporated water
as a bonus. This water is collected in a tank because cool water on a ship can
be a valuable resource.
Cost of drinking water generation decides which type of a ship uses
what method for water generation. In the passenger ships, where voyagers are
the ones who are to face the cost of water they consume, reverse osmosis is the
prevailing method used for generation of drinking water. Also, this method is
known to produce a lot of water in short while. However, these perks cost a
lot. On the contrary, merchant ships that have few crew members who have
nothing to call luxury use simple evaporation method that, as mentioned before,
uses sea water and ship’s engine heat.
A Fresh Water Generator
comprises of two huge containers, one is called as condenser and the other is
called evaporated. An educator produces the necessary vacuum for the process. There
are a few things to consider for the managers of the ship before they start
their Fresh Water Generator. A few
of them are mentioned here below.
- The ship needs to be at a good distance from shore and from canals to generate healthy water. When close to the shore, sewage water may be present in the sea water and where the Fresh Water Generator effectively removes salts and minerals from water, it does not remove pollutants equally well. 20 nautical miles is universally considered as a safe limit.
- The engine needs to be running at least 50 rpm at the time of water generation because otherwise it simply fails to produce enough heat and pressure to evaporate the salt water. Also, the drainage needs to be in off position at the time of water generation.
- The intake and outlet of sea water needs to be in a good shape and blockage free. Sea water needs to be filtered for small fish and weed before it goes in and needs to be flushed out very quickly from the outlet after passing through the Fresh Water Generator.
- The ideal vacuum for drinkable water generation is 90% or more, anything less than this would produce water that is not entirely free of salts and minerals. It normally takes 10 minutes for this much vacuum to create.
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