4-1-3. Features of OTED OTED system is based on the Spray Evaporation Desalination System with the Ocean Thermal Energy or Discharged Thermal Energy. 1. Production of fresh water only with a temperature difference of more than 5 degrees Celsius. 2. Production of fresh water without additional heat energy. 3. Production of fresh water with high purity. 4. Applicability to utilize various types of waste heat even with low temperature. 5. Simultaneous production of power generation and desalination with hybrid system of Ocean Thermal Energy Conversion and OTED.