Solar Energy and Sustainable Development

Published by Center for Solar Energy Research and Studies, Tajoura - Tripoli-Libya

ISSN: 2411-9636 (P) , ISSN: 2414-6013 (e) 

The General Impact Factor is 2.1779 for year 2018

Arabic Impact Factor - 1.0

Editor-in-Chief: Dr. Wedad A. El-Osta

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Authors:

Y. Aldali
Omar Almokhtar University, Faculty of Engineering, Derna, Libya
Email:This email address is being protected from spambots. You need JavaScript enabled to view it.

K. Morad
Port Said University, Faculty of Engineering, Egypt
 

Nabil A.S. Elminshawy
Port Said University, Faculty of Engineering, Egypt
 

F. Ahwi
Omar Almokhtar University, Faculty of Engineering, Derna, Libya
 


 

Abstract:

A mathematical model is developed to predict the performance of the integrated solar/hybrid desalination system. The novel hybrid desalination system in this study consists of multi-stage thermal vapor compression (TVC) system and spiral wound air-gap membrane desalination (AGMD) units. The hot brine rejected from each evaporator stage of TVC system is used as the hot feed to the AGM unit. The parabolic trough collectors (PTCs) field with direct steam generation was considered as solar system. At solar time, the solar field generates a portion of motive steam required to operate the TVC system while the remaining part is generated by the boiler. The results of this study show that the rate of distilled water from TVC system is 3415 L/h (20.56 L/h.m2) and from the AGMD units is 150 L/h (6.944 L/h.m2) and the annual saving of natural gas (NG) consumption by using PTCs field is 24 tons. The economic study has indicated that the benefit/cost ratio from of the use of PTCs field to generate a portion of motive steam is 2.1 and the production cost of 1 m3 of distilled water from AGMD units is 0.9 $ in comparison with 0.45-2.51 $ from different types of water desalination systems. .

Keywords:

Integrated solar-hybrid desalination system, parabolic trough collectors, thermal vapor compression, air-gap membrane, benefit/cost ratio.

Download PDF:

"Numerical Simulation of the Integrated Solar/Hybrid Desalination System"

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