Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/14171
Title: Performance of MED evaporators with different tube profiles and materials
Authors: PRASANTA KUMAR DEY
Keywords: Desalination; Tube-profile; concentration; performance ratio; simulated seawater; multi-effect.
Issue Date: 12-Aug-2004
Source: PRASANTA KUMAR DEY (2004-08-12). Performance of MED evaporators with different tube profiles and materials. ScholarBank@NUS Repository.
Abstract: Comprehensive numerical and experimental investigations were made on a single-effect desalination system. Four different types of tube-profiles were considered, such as, Single-fluted Aluminum, Smooth Copper-Nickel (90-10), Corrugated Copper-Nickel and Poly-Teflon (PTFE) coated Aluminum for the design of the evaporator. A series of experiments were performed in different operating conditions and variable concentrations of simulated seawater. Hot water was used as the heating fluid. A simulation model was developed and used to find the performance of the system in single and multi-effect mode. A fresh water yield of 4 m3/day and performance ratio of 0.98 was obtained from the system when operated with corrugated Cu-Ni (90-10) tube-bundle. The simulation results showed good agreement with the experimental results and predicted that the desalination system can extend up to 5 effects with a performance ratio of 5.12. The product water concentration was found between 20 to 30 ppm which is fairly below the potable water standard set by WHO (500 ppm).
URI: http://scholarbank.nus.edu.sg/handle/10635/14171
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