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Kostas Test 2

This is a test Innovation report

Developed by ARANA WATER MANAGEMENT S.L.

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

TRL8. System incorporated in comercial design
System complete and qualified. Technology has been proven to work in its final form and under expected conditions. In almost all cases, this TRL represents the end of true system development. Examples include developmental test and evaluation (DT&E) of the system in its intended weapon system to determine if it meets design specifications. 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 improving the technological readiness of the technology (reduction of risks of failures, and rise of technical reliability). At the present, we are manufacturing 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.

See more information about this level and the TRL and SRL levels.

Market assessment

The business plan for this innovation has been evaluated by The Funding Company and it is considered to be ready for investment.

The main components of the system have been tested separately, and an initial integration exercise has been conducted.

Credits
Collaborators

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.

Limitations/conditions under which this innovation does not work or is less effective

A loss of performance may be expected at wind speeds higher than 90 km/h (maximum physical load), or for periods of use greater than 10 years (although expected lifespan of the polymer is 15 years).

Added value
Modular units are lighter than other existing floating modular covers, and their implementation in reservoirs is easier than other floating membranes and shade covers. Maximum effectiveness has been achieved combining an optimal design with an advanced polymers transformation process. These advantages make the manufacturing of modules cheaper and more economically feasible than other current solutions. Modules adapt to any reservoir geometry -already built or under construction-. No additional engineering modifications in reservoirs are required.

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