Biomimetic file 170: Sharktail like tidal turbine

Sharktail like tidalturbine


Picture source: Biopower systems

Highlight: “The bioSTREAMTM employs a patented oscillating hydrofoil system to extract energy from moving water. For sites that have a peak current speed of 2.5m/s or greater, bioSTREAMTMoffers an environmentally safe and commercially viable source of electricity…An onboard computer continually adjusts the angle of the hydrofoil (fin) relative to the oncoming flow such that the tail and fin system develops a swimming motion. The energy transferred by this side-to-side motion is converted to electricity by O-DriveTM modules installed on the bioSTREAMTM…The ability to streamline and weathervane during periods of excessive flow allow for low-cost construction and competitive generation cost per MWh. A 250kW bioSTREAMTM demonstration project is in development…”

Insight: While conventional spinning blades are the most commonly spread type of tidal generation, it is clearly not suited for every case. There is a lot of potential out there for low cost/low energy systems that mounted in series can provide safe and regular sources of energy for, let say, coastal towns. With the rapid rise of energy storage systems as well as computer processing power (these systems need to be highly dynamic) this type of production is no longer an obsolete addition to other types of traditional energy generation.

It is well established that species movement are efficient, they need to be in order to survive..Therefore it only makes sense that more should be done to study and replicate these movements for efficient and effective energy generation purposes…

More information: here

What is Biomimetics: the field of gaining inspiration from nature first to solve some of our most difficult challenges. Instead of coming up with our own solutions to a problematic, the odds are that species or natural systems on the planet already offer an ultimate solution. This simple fact is also another strong case to preserve species at all cost as the intellectual heritage contained within or through the study of species is both irreplaceable and invaluable…