EXERGY ASSESSMENT FOR A TYPICAL MULTI-EFFECT THERMAL VAPOR COMPRESSION DESALINATION UNIT (MED-TVC)

Giuma Fellah; Essaied Shuia; Abdulhafid Rohoma

doi:10.66411/jer.v20i.277

Authors

Giuma Fellah Department of Mechanical and Industrial Engineering, Faculty of Engineering, University of Tripoli Author
Essaied Shuia Department of Mechanical Engineering, Faculty of Engineering, University of Zawia Author
Abdulhafid Rohoma Department of Mechanical Engineering ,Faculty of Engineering, University of Zawia Author

DOI:

https://doi.org/10.66411/jer.v20i.277

Keywords:

Desalination, Exergy, Irreversibility, Thermal Vapor Compression, effectiveness

Abstract

The aim of this paper is devoted to assess the thermodynamics performance of unit one of Zawia city desalination plant. The plant was supplied by French company SIDEM and constructed by Turkish ENKA TEKNIK Company started producing distillate water in July 2010. The plant is based on multiple-effect distillation with thermal vapor compression technology and consists of four units with total capacity of 80,000 m3/day. Design and realtime data in summer and winter sessions are adopted for the analysis. The analysis reveals that the thermal vapor compression and the effects are the main source of exergy destruction. The major exergy destruction takes place during the thermal vapor compression processes, which contribute to an average value of 45.76%% of the consumed exergy. Losses contribute to about 22.25% of the consumed exergy. Effects, pre-heaters and final condenser contribute on average to 16.13%, 7.84%, and 8.02% of the consumed exergy, respectively.

References

[1] Mistry K., McGovern R. and G. Thiel, Entropy Generation Analysis of Desalination Technologies, Entropy, 13, 2011, 1829-1864. DOI: https://doi.org/10.3390/e13101829

[2] Hamed O., Zamamiri A., Aly S. and N. Liorand, Thermal performance and exergy analysis of a thermal vapor compression desalination system, Energy Conversion Mgmt, 37, 1996, 379-387. DOI: https://doi.org/10.1016/0196-8904(95)00194-8

[3] Al-Najem N., Darwish M and F. Youssef, Thermo-vapor compression desalination: energy and availability analysis of single and multi-effect systems, Desalination, 110, 1997, 223. DOI: https://doi.org/10.1016/S0011-9164(97)00101-X

[4] Alasfour F, Darwish M and A. Bin Amer, Thermal analysis of ME-TVC-MEE desalination systems, Desalination, 174, 2005, 39-61. DOI: https://doi.org/10.1016/j.desal.2004.08.039

[5] Choi H, Lee T., Kim Y. and S. Song, Performance improvement of multiple-effect distiller with thermal vapor compression system by exergy analysis. Desalination, 182, 2005, 239-249. DOI: https://doi.org/10.1016/j.desal.2005.03.018

[6] Wang Y., Lior N., Performance analysis of combined humidified gas turbine power generation and multi-effect thermal vapor compression desalination systems, Desalination, 196, 2006, 84-104. DOI: https://doi.org/10.1016/j.desal.2006.01.010

[7] Sayyaadi H., Saffaria H., Thermo-economic optimization of multi effect distillation, Applied Energy, 87, 2010, 1122-1133. DOI: https://doi.org/10.1016/j.apenergy.2009.05.023

[8] Muftah A., Fellah G., Exergy analysis for Zuara desalination plant in Libya, International conference of chemical engineering, 2009, Tripoli – Libya.

[9] Bin Amer A., New Trend in the Development of ME-TVC Desalination System, Kuwait Foundation for the Advancement of Sciences (KFAS), Research Directorate, Water Resources Program Kuwait, 2010, 211. DOI: https://doi.org/10.5772/14799

[10] Al-Kharabsheh S., Theoretical and experimental analysis of water desalination system using low grade solar heat. Ph.D. Thesis University of Florida, Florida USA, 2003. DOI: https://doi.org/10.1115/ISEC2003-44009