Euro-Mediterranean Information System on know-how in the Water sector
International portal
 

News Theoretical simulation of small scale psychometric solar water desalination system in semi-arid region

Many countries around the world suffer from water scarcity. This is especially true in remote and semiarid regions in the Middle East and North Africa (MENA) where per capita water supplies decline as populations increase. This paper presents the results of a theoretical simulation of an affordable small scale solar water desalination plant using the psychometric humidification and dehumidification process coupled with an evacuated tube solar collector with an area of about 2 m2 .

A mathematical model was developed to describe the system’s operation. Then a computer program using Simulink Matlab software was developed to provide the governing equations for the theoretical calculations of the humidificationand dehumidification processes. The experimental and theoretical values for the total daily distillate output were found to be closely correlated.

After the experimental calibration of the mathematical model, a model simulating solar radiation under the climatic conditions in the Middle East region proved that the performance of the system could be improved to produce a considerably higher amount of fresh water, namely up to 17.5 kg/m2 day.

This work suggests that utilizing the concept of humidification and dehumidification, a compact water desalination unit coupled with solar collectors would significantly increase the potable water supply in remote area. It could be a unique solution of water shortages in such areas.

Contact information Mahmoud Shatat*, Siddig Omer, Mark Gillott, Saffa Riffat Institute of Sustainable Energy Technology, University of Nottingham, Nottingham NG7 2RD, UK (email: enxms9@nottingham.ac.uk ; mahmoodshatat@hotmail.com ; siddig.omer@nottingham.ac.uk ; mark.gillott@nottingham.ac.uk ; saffa.riffat@nottingham.ac.uk)
News type Inbrief
File link http://www.sciencedev.net/Docs/Paper_1_-Mahmoud_Shatat.pdf
Source of information SciDev.Net via @2013 Elsevier Ltd. All rights reserved
Keyword(s) desalination
Subject(s) ANALYSIS AND TESTS , CHARACTERISTICAL PARAMETERS OF WATERS AND SLUDGES , DRINKING WATER , DRINKING WATER AND SANITATION : COMMON PROCESSES OF PURIFICATION AND TREATMENT , ENERGY , HEALTH - HYGIENE - PATHOGENIC MICROORGANISM , HYDRAULICS - HYDROLOGY , INDUSTRY , INFRASTRUCTURES , MEASUREMENTS AND INSTRUMENTATION , METHTODOLOGY - STATISTICS - DECISION AID , PREVENTION AND NUISANCES POLLUTION , RISKS AND CLIMATOLOGY , SANITATION -STRICT PURIFICATION PROCESSES , SLUDGES , TOOL TERMS , WATER QUALITY
Relation http://www.semide.net/topics/Desalination
Geographical coverage United Kingdom,
News date 29/07/2013
Working language(s) ENGLISH
PDF