Modern-day vessels are designed to run at their lowest cost and rather than carrying tonnes of quantity of freshwater vessel owners prefer to carry cargo instead. So, it is common practice that freshwater tanks are limited to a few hundred tons depending on the consumption of a particular vessel.
Fresh Water Generator Evaporator Plates are best for domestic use, for boilers and cooling systems, and if the vessel is a cattle carrier for animals we have to use a considerable amount of water per day. Because of reason, the vessel can't wait until reaching a port to take freshwater but to produce it onboard. So it is more practicable to produce freshwater on board by using a freshwater generator.
Distillation
The seawater has total dissolved solids content and the potable water for crew requirements contains less than 500 mg/lt of suspended solids. Good quality boiler feed will contain less than 2.5 mg/lt and the potable water taken on in port is not suitable for use in water tube boilers unless further tre ated by distillation.
When you use the Fresh Water Generator Evaporator Plates they clean water and make it free from impurities that are essential for engines and also boilers.
- Impurities in Shorewater
- Chlorine and suspended solids
- Unsuitable for consumption
- Unsuitable for boiler and engine cooling because it has dissolved solids
- Impurities of the seawater
- Salts and other particles
- Unsuitable for consumption
Working for freshwater generators
When the seawater is pumped from the sea chest to the FWG condenser then it passes through the condenser and after that finally through the ejector. Fresh Water Generator Evaporator Plates divert the seawater from the condenser to the ejector and this maintains the vacuum within the shell.
When the jacket water is pumped from the main engine to the FWG plates then its temperature changes. Also, it is important not to evaporate too much seawater as this will lead to salt forming over the plates. The evaporated water passes through the demister and removes any carry-over salts. The water mist then reaches the condenser and the water mist will condense over the plates.
You might also need the other Ship Engines Spare Parts when working with FWG because your process might affect the parts of the engine.
Water treatment
Fresh water that passes after the evaporator plates is now called distilled water and is used for washing and cleaning applications. To make it suitable for drinking it passes through a mineralizer and bacterial treatment then it becomes perfect for you.
Water hardness is a concern due to its tendency to form scale upon system surfaces and the heat exchanger surfaces and more. Water softeners with water with sodium reduce the water's hardness and make it perfect for drinking.
Final note!
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