الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
 |  | from | 106 |  |  |
| | | from | 106 | | |
Abstract
The Problem of drinking water shortage is becoming more crucial nowadays as a result of the increased demand due to the population growth and the rise in the standard of living. In recent years, Desalination using Electrodialysis powered by solar energy (PV-ED) is being widely used to help provide treated water and reduce the scarcity in water supply. In the present study, a water desalination laboratory scale ED cell with a fixed bed circulation system was designed,developed and tested. The poles of the cell are made of silver-coated stainless steel sheets and pellets. The cell consists of three chambers, the first and third chambers contain the concentrated NaCl solution whereas the middle compartment contains the desalinated NaCl solution. The effect of three parameters (namely; cell voltage, flowrate and salt concentration) on the removal percentage of salt ions was studied. The cell voltage was adjusted at 3,4 and 6 volts. A flow rate >of 5, 10 and 20 ml/s and an initial salt concentration of 2000, 5000 and 7000 ppm were investigated. The maximum salt percentage removal obtained was 52.5% at the lowest initial concentration (2000 ppm) and at the highest cell voltage (6v). The flowrate was varied from 5 to 20 ml/s and it was found that the lowest flowrate has the highest percentage of separation and other graphs show no significant effect of flowrate on the percentage removal within this range.Models of PV module And ED have also been developed using Matlab software. The PV module is applied to study the impact of different inputs (Temperature and solar radiations) on the values of photovoltaic power which can be measured by calculating the values of voltage and current.The ED modeling has been designed in order to calculate the total cell voltage at different conditions of current and concentrations.