This document was produced by researchers of the Solar-Institut JÃ¼lich, Universidade Federal do Ceara and RWE-Aqua and explores the benefits of using systems with multi-layer heat recovery in solar thermal desalination plants.
The project, financed by Greenpeace International, looked at three concrete examples of desalination plants, using multi-layer heat recovery:
- 4 mÂ² flat plate collector with a 1 mÂ² evaporation surface
- 2.4 mÂ² parabolic reflector with a 0.66 mÂ² evaporation surface
- 2 mÂ² evacuated tube collectors with a 1 mÂ² evaporation surface
The results of the research showed that using systems with multi-layer heat recovery in solar thermal desalination plants constitutes an economically attractive alternative to the technically demanding desalination systems commercially available. Thus it also allows producing between 50 and 5000 litres of drinking water per day.