The DHP vacuum evaporating distillers utilize heat from the diesel engine coolant and LP steam by using special steam jet heaters. The DHP vacuum evaporating distiller is based on DHP's titanium plate heat exchagers, one for evaporating the heated brine and the other for condensing the water vapor.

The vacuum chamber is kept by the seawater driven from condenser combination ejector.

Heated seawater is used as feed water (brine) for the evaporating and evaporating temperature is controlled by vacuum pressure. Evaporating pure water vapor passes through the deflector, demister and moving water droplets and then enters the condenser. The pure water vapor is being condensed by cold seawater. The distillated pure water is pumped out using a fresh water pump and is then checked salinity. If the salinity exceeds the specified level, solenoid valves open in the discharge line of the fresh water pump automaticly.

The excess salinity in the distilled water is returned to the evaporating chamber.