Effect of Pressure on Salt Water Spray as Alternative Methods of Desalination Using Droplet Evaporation-Air Entrainment

Abstract

It is necessary to utilize desalination technology to clear the water available, including seawater, to meet the increasing need for clean water due to population growth. Several desalination methods, such as thermal methods, membranes, freezing g, and ion exchange, continue to be developed but have not overcome some deficiencies. Therefore, new alternative desalination methods with droplet atomization, which utilizes the air entrainment phenomena, are being developed. Research on non-dimensional fluid atomization is the basis for designing this method. The study used brine pumped through a nozzle with a small diameter to become mist or vapor. This study carried out variations of research parameters on the configuration of the experimental apparatus in the form of pressure, the diameter of the nozzle, and the number of nozzles. Quantitative data from experimental results obtained from measurement instruments and qualitative data in videos obtained using a camera are to be processed into quantitative data using image processing. The results showed that pressure affects the characteristics of a full cone-shaped water spray. It was found that the best spray system configuration with two nozzles with a diameter of 0.5 mm in a pressure of 9 bar.

Keywords

• desalination
• droplet
• non-dimensional
• pressure
• water spray characteristics