태양에너지 해수담수화 시스템 실증

A third of people in the world based on UN environmental report have suffered with the water lack and KOREA is also known as one of the countries with water lack problem. As reported in the running report of domestic management for sea water desalination system, there are some problems including the operation by town manager without professional knowledge, out of order of membrane for pre-filtering of sea water, and difficult repairs of RO components and high pressure pumps to operate. 29 systems of all 40 sea water desalination systems installed have normally operated in Korea. In general, the process of fresh water generation using sea water needs large energy, so to reduce the required energy is so important. In this research, the hot water using evacuated tubular solar collector would supply as heating medium for sea water needed to be evaporated and the PV system would supply the electricity to move the working fluids. The desalination system with solar energy is integrating the solar collector, photovoltaic system, and evaporation type of fresh water generator. The installed solar collector area for heating medium was about 120 square meters and PV system was 5㎾ as the total electric requirement. The fresh water generation capacity of the trial product is about 2 ton/day. To achieve that object, this study set up the demo-plant, then estimate and analyze the usefulness, the safety, the reliability and the economical effectiveness.