Concentrated collectors have huge applications in solar energy field such as heating, cooling, power generation, and desalination. In this project, a solar dish water heater for desalting water was designed and analysed. The dish aperture area was 4.158m² and the absorber was of copper one with 0.2077m² area, 0.01m³ volume, and of 20 concentrating ratio. The water is heated to 110°C at an ambient temperature of 18°C. The stagnation temperature of the absorber reached 231°C and the time needed to reach that temperature is about 1800s. The result shows that the thermal efficiency was about 0.44.

solar dish collector, water desalting, stagnation temperature.