Improvement of Nozzle Design and Optimization of Mechanism of (Flash Type) Fresh Water Generator

• Main Authors: Chien, Jui-Cheng, 簡睿成
• Other Authors: Soon , Shih-Ping
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/66197897120908154081

碩士 === 國立臺灣海洋大學 === 輪機工程學系 === 102 === The purpose of this paper is to discuss the design of a vacuumed desalination mechanism. With three different nozzles, sea water will emit different levels of water mist due to their internal structure. Droplets of sea water are generated by a sudden reduction of pressure and a special designed nozzle this mechanism through.With enough temperature, droplets of sea water evaporate into steam and will be condensed into fresh water later. Examining salinity of this condensed water proves the effectiveness of this desalination mechanism. Analyzing the variance of nozzle and the generation of fresh water and its salinity,best result can be acquired for this design of vacuumed desalination mechanism. The procedures of the study include: (1) Design a vacuum desalination system, (2) Improve nozzle structure, (3) Perform experiments by using Taguchi method and orthogonal array L18( ), (4) Perform analysis of variance to determine thes production and salinity of fresh water, (5) Produce main effects plot, and (6) Find the best combination nozzle type, water temperature, time, and pressure. Indeed, a better design of desalination mechanism can be recognized by the improvement of nozzle determined through the percentage of contribution. Keywords: desalination , Taguchi method