
Glossary
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Dual voltage
Some watermakers operate with dual-voltage systems, meaning they can be powered by 12/24V (batteries) or 24V (voltage) currents.
220/110V (generators).
Production capacity
It is a measure of the volume of fresh water that a watermaker can produce per hour, expressed in liters per hour (L/h).
Chlorination
A process sometimes used to disinfect watermaker systems or fresh water tanks to prevent bacterial growth. However, chlorine must be used with caution to avoid damaging reverse osmosis membranes.
The membrane preservative
Chemical used to preserve the membrane when it is not used for a long time. It prevents the
bacterial growth and fouling.
The flow meter
Instrument used to measure the amount of fresh water produced by the desalinator. This allows the user to monitor production in real time.
Activated carbon filters
Filters used to improve water quality by removing odors, chlorine, and some organic impurities after fresh water production.
The reverse osmosis membrane
The reverse osmosis membrane is a semi-permeable element in a watermaker that allows the separation of salts and other impurities from seawater to produce fresh water.
Reverse osmosis
Reverse osmosis is a filtration process where seawater is pressurized through a semi-permeable membrane that retains salts and other impurities, allowing only fresh water to pass through.
Pre-filtration
Pre-filtration is an initial step in the filtration process, where seawater
passes through filters (5 or 20 microns depending on the model) to eliminate suspended particles before reaching the reverse osmosis membrane.
The pressure
Pressure is a key element in the operation of a watermaker, as it is needed to force seawater through the reverse osmosis membrane which then gets rid of the salt and other elements it contains. It is usually between 50 and 70 bars.
Rinsing
Flushing is a process of rinsing the membrane and lines of the
desalinator with fresh water after use, to prevent salt build-up and extend membrane life.
The salinometer
The salinometer is an instrument used to measure the salinity of water produced by the
desalinator. If the salinity exceeds a certain threshold, the water is rejected to avoid any consumption of non-potable water.
The energy recovery system
This is a technology used in some watermakers to recycle some of the energy used in the reverse osmosis process, thereby reducing overall energy consumption.