DESIGN AND FABRICATION OF DISTILLATION EQUIPMENT OF FRESH WATER FROM THE SEAWATER BY THE USE OF THE WASTE HEAT FROM DIESEL ENGINES

Abstract

Although freshwater distilled from poor seawater, the amount of impurities is very small, does not meet the needs of the human body but is very good for machinery (such as cooling for machinery , equipment used for boilers), it is less corrosive or deposits on the cooling surface. Distilled water is often used for crew activities (bathing, washing, ...). In order to ensure the health for crew members, in addition to fresh water systems, on board the ship is also equipped with drinking water systems (drinking water) to provide drinking water and cooking. If this amount of fresh water must be purchased from the port, it will be costly for the ship owner and especially not to be able to take advantage of the fresh water on the vessel when operating a long route or buying fresh water of poor quality. In order to overcome this problem, on the large vessels, the international route owners have all equipped fresh water distillation equipment to take advantage of waste heat from the main diesel engine. Fresh water is created according to the principle of evaporation and condensation of seawater at temperature and pressure. The capacity of freshwater distillation equipment is installed depending on the tonnage of the vessel and the number of crew members working on board or in other words the demand for fresh water on board. The paper presents a method for designing and manufacturing a freshwater distillation device for use on small vessels.

Keywords

• distillation
• seawater
• freshwater
• design