What is demister in FWG?

What is demister in FWG?

A demister is installed between the condenser and evaporator. The condenser, evaporator and demister are housed within the FWG shell. Fresh water from the FWG condenser is pumped to a storage tank by a fresh water pump (usually a small centrifugal pump).

What are the different components in a fresh water generator?

A fresh water generator consists of parts such as; heat exchanger, demister, ejector pump, distillate pump, salinometer, sea water pump, orifice and control panel. For both plate and shell type fresh water generator; everything remains the same other than heat exchanger.

What is the purpose of air ejector brine ejector in fresh water generator?

– A small part of the seawater flow is used as feed water to the evaporation section, where it is then divided into each second channels. – Through a suction process the air-brine ejector removes the air from inside the casing and the excesive feed water.

What is the meaning of Demist?

: to remove condensed moisture from : defog demist a car’s windows.

What is the principle of fresh water generator?

Fresh Water Generator Working Principle. Basic principle of all low pressure freshwater generator is that, boiling point of water can be reduced by reducing the pressure of the atmosphere surrounding it. By maintaining a low pressure, water can be boiled at low temperatures say 50 degree Celsius.

How do you Demist the front windscreen?

How to demist your car windows fast

1. Turn your air-conditioning ON: AC dries out air, meaning it will absorb more liquid from inside your car.
2. Turn OFF air recirculation: Air outside your frosty cabin is cold, and therefore doesn’t contain as much water vapour so will help in demisting.

What makes a freshwater generator a freshwater distiller?

A unit used for conversion of seawater into fresh water by vacuum distillation based on evaporation and condensation. Single-stage freshwater generator consists of a chamber with two titanium plate packs acting as an evaporator and a condenser respectively. A vacuum of 85-95% is maintained in the system by a brine/air ejector.

What are the components of a fresh water generator?

If the condenser and evaporator Heatexchangers of a fresh water generator is composed of plates then that type of freshwater generator is called Plate type freshwater generator. Main components are condenser and evaporator heatexchangers, brain air ejectors, sea water pump, Distillate pump, salinometer, Demister, Water flow meter etc.

How does a freshwater generator work on a ship?

A freshwater generator is a machine, usually on board a ship but in some shore-based industrial settings too, that converts salt water from seas and oceans into drinkable fresh water. The machines tend to be quite complex and rely on a series of pumps and pressure chambers as well as high temperatures to prompt both boiling and evaporation.

How are water droplets re-entrained in the demister?

Re-entrainment of the collected water droplets with the vapor flowing in the demister occurs because the shearing energy per unit volume of liquid droplet is sufficient to create liquid droplets having a large ratio of surface to volume. This will increase the drag force exerted by the vapor on the droplets external surface.