System Design of Small-scale Seawater Desalination Device

Abstract

Water is of great significance to the subsistence and development of human beings. As we all know, fresh water issues have always been a major problem to the ocean navigation, as the existing desalination devices generally have the disadvantages of large volume, highenergy consumption, which would bring pollution to the environment. Basing on the study results in existence, this paper presents a new system design of small-scale seawater desalination device, which founds on the enhanced heat transfer processes of fluid phase change, including loop heat pipe technology, new type of heat-sink type spoiler evaporator and integrated soaking plate fin condenser to implement the low-power and low-temperature system. This system covers an area of only 1.8m2, as the energy consumption is 62.5% of the reverse osmosis desalination method and 20% of the multistage distillation desalination method under the same conditions. What’s more, the system consists of the loop heat pipe based on the phase change thermal principle, integrated soaking plate fin condenser and the new type of heat-sink type spoiler evaporator, improves the heat transfer efficiency, besides it has low pollution.