Planta de osmose reversa acionada por módulos fotovoltaicos com MPPT e válvula autoreguladora de pressão

• Ano de defesa: 2016
• Autor(a) principal: Mendonça, Doglasse Ernesto
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Palavras-chave em Português: Engenharia elétrica; Dessalinização por osmose reversa; Energia solar
• Link de acesso: http://www.repositorio.ufc.br/handle/riufc/15924

This project presents a brackish water desalination plant via Reverse Osmosis (RO) powered by Photovoltaic Modules (PV) with Maximum Power Tracking (MPPT) and a self – regulating pressure valve. The developed unit is installed on Alternative Energy Laboratory (LEA), which is located on the campus of PICI at Federal University of Ceará. To extract maximum power from the PV module a Buck type converter was developed for this application. The Incremental Conductance algorithms (IncCond) is used. The MPPT technique was simulated, tested and validated, showing an efficiency of 86.8%. An innovation in this plant is the use of a self-regulating pressure valve installed in the concentrate output, which ensures a smaller pressure and power variation in the pump that is responsible for pressurizing the water to the membranes. The technical feasibility of the RO plant is checked in two phases: one without the presence of the self- regulating pressure valve in the concentrated output and other with the self-regulating pressure valve in the concentrated output. The plant is tested for two salinity levels 1000 and 1500 mg/L of TDS (Total Dissolved Solids) levels. These salinity levels chosen are commonly found in most brackish water wells of the semi-arid region of Northeastern Brazil. For operation without selfregulating pressure valve the obtained average values are: recovery rate 8.03% (relation between permeate flow and feed water flow), 151.7 L of daily production of drinking water with 130 mg/L of TDS, specific energy consumption of 2.68 kWh/m3. For operation with self-regulating pressure valve the obtained average values are: recovery rate 8.14%, 175.3 L of daily production of drinking water with 120 mg/L of TDS, specific energy consumption of 2.56 kWh/m3. Thus the configuration system using the self – regulating valve showed better results