Space and Weight Requirement:
The space requirement and weight of the equipment onboard a ship today is more important than ever. Therefore it is very important to choose the right equipment.
The difference between a traditional tubular heat exchanger and a Sondex plate heat exchanger is major. In space- as well as in weight-requirements there is a lot to save with a Sondex plate heat exchanger:The weight of the plate heat exchanger only has 20%.
The size is only 30%. The K-value is 4-6 times higher. Easier to service. Longer durability time and less prices raising costs.

The Cooling System:
Most cooling systems are made as central cooling systems, which means that there is only one or two bigger plate heat exchangers equipped with titanium plates.
Titanium is the only material that can withstand the aggressive seawater without corrosion damages on the plates in the heat exchanger. This means that the central cooler operate without problems using seawater as the cooling media for the internal freshwater cooling system.
The advantage of a central cooler is that the use of the corrosive seawater is limited to a minimum, which will reduce the corrosion damage in the cooling system.
The rest of the plate heat exchangers is normally equipped with stainless steel plates there is no corrosion risk as the heat exchangers work with freshwater.

Freshwater Distiller:
The Sondex freshwater distiller utilizes the heat from diesel engine jacket cooling water to produce pure drinkable water by evaporating sea water under high vacuum, enabling the feed water to evaporate at temperatures below 48°C. Steam can also be used as the heat source instead of the hot jacket water. The Sondex freshwater distiller is based on two Sondex titanium plate heat exchangers, acting as an evaporator and a condenser respectively.

Design and function of the heat exchanger:
The specially developed Sondex plate and shell heat exchanger "SPS", has proven to be a heavy fuel oil pre-heater in the Marine Industry. With it is unique design and many advantages this type of heat exchanger has now become the standard fuel oil heater on many ships.

This heat exchanger works in the same way as an ordinary tubular unit, however, it is more efficient because plate have been used instead of tubes. The plates are laser/TIG welded in order to form a plate pack, which is then mounted inside a traditional cylindrical shell. Pressure rating: PN16/PN25. Max. temp.: Up to 250°C. The heat exchanger is produced as an all welded exchanger or with flanges. This makes manual cleaning possible.