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2. Technical Approach Technically, the project studied the technical characteristics of the reverse osmosis systems so as to utilize the output results in designing a new system that will be powered solely by a photovoltaic power system (PVPS). battery bank. When the batteries became well charged, the system disconnected from the utility grid and once again operated the desalination unit from the batteries. The Jordanian National Energy Research Center carried out detailed tests and analysis to study the performance characteristics of RO technology. Field tests were carried out at different operational settings. Data were collected, evaluated, and analyzed. Interesting results show that power consumption, permeate flow rate, and recovery ratio increase with pressure increase. 3. Results and Accomplishments The results of evaluation measurement data for the first RO-unit (ROWPU) in Qatar show that the hybrid system is feasible. It is now under the guidance of the Ministry of Water and Irrigation of Jordan. 4. Planned FY 2006 Activities Evaluate the economic and technical viability of these units for other locations in Jordan and the West Bank. The challenge in implementation of the PVPS- powered desalination unit was the optimum matching of the intermittent PVPS power output with the steady energy demand for the desalination process. Power management and demand side management are the two options available to solve this problem. In the first case, an appropriately controlled hybrid power supply system that is able to provide a steady energy output is used, and it is sized at the nominal power demand of the desalination process. In the second case, the desalination process operates only when the energy output of the PVPS is able to cover the energy demand. Given these options, the PVPS was designed as a hybrid system with three power sources: PVPS, storage battery bank, and utility grid. • To determine the feasibility of the hybrid system, the PVPS was operated normally as a stand-alone power system, independent of the utility grid. It charged the storage battery bank and provided power for the AC-load of the desalination unit for 6 hours during a sunny day. When the system was no longer able to keep up with the AC power requirement of the desalination unit, but before the storage battery bank became deeply discharged, the system changed over directly to the utility grid to operate the desalination unit and recharge the • Prepare and deliver a final report to the USAID by February 28, 2006. 5. Major FY 2005 Publications There are no major publications for 2005. The final report for the whole project (by NREL to USAID) is due by February 28, 2006. 173 EERE Crosscutting ActivitiesPDF Image | DOE Solar Energy Technologies Program
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