Polyethylene modular floating covers to supress evaporation losses and algae growth in water reservoirs

Technology validated in relevant environment.
Fidelity of breadboard technology increases significantly. The basic technological components are integrated with reasonably realistic supporting elements so they can be tested in a simulated environment. Examples include “high-fidelity” laboratory integration of components.
Our company has already manufactured 300 small-scale modules of 0.15 m2 each one, which are being tested under laboratory and operational conditions since February 2017. Results from these previous tests have allowed to improve the technological readiness of the technology (reduction of risks of failures, and increase of technical reliability). At the present, we are manufactoring modules at scale 1:2 in an experimental machine to cover a 1.500 sqm reservoir. Additional laboratory tests (wind tunnel and lifespan tests) and functionality tests in an operational environment are being performed during the next months in close collaboration with a research institution at SE Spain.

How does it work?

Floating hexagonal modules of 0.3 m2 are placed in the water reservoir one by one. Once modules are joined each other up to cover all the water surface, water losses due to direct evaporation are reduced, and the penetration of sunlight and photosynthesis (and hence algae growth) are prevented. Modules adapt well to water level changes by staying in the irrigation reservoir slopes. Overall, the system is able to bear wind speeds up to 90 km/h and have a minimum lifespan of 10 years.

May, 2017

New technical information added

June, 2017

TRL updated