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Vortec Turbines have developed a hydro system that can work on low (~1m) heads of water through use of a novel vortex to speed up flow. Proofs of concept have been built, and funds sourced for the first deployment, but they will need support to create a replicable system. Approximate requirement of US$60k to build a 40kw system with a three-year payback, and another US$20-40k to complete testing and selection of alternators, and train villagers in their construction.
Problem
Many countries have significant flowing water resources, but they are in smaller rivers, with small drops (or “head”). Most hydro solutions require a head of at least 2-3m.
Solution
The innovation creates a basin into which a portion of the river flow is diverted, entering the basin at a tangent. It works with low-head (as little as 0.5m, though 1-1.5 is preferable). As the water enters the basin it swirls and is sucked out the bottom like the drain on a bath. The speed in the vortex allows for more efficient capturing of the energy.
Market
This innovation would initially be deployed across Bali, where there is abundant flowing water, but a relatively poor electricity infrastructure. Once proven this innovation has potential application across the developing and developed world.
Financials
It is estimated that a 5m3/sec flow through a 1.5m head could generate 40kw for a capital cost of about US$60k. In Bali – where the engineers are based – such situations are common and a generator would pay back its capital cost in 3 years.
This innovation needs about US$60k to build the first system, and potentially another US$40k to assist deployment. After that point it should be financeable through micro-credit lenders.
Team
The innovator is a German living permanently in Bali, where he runs a small successful electrical contracting business with a focus on renewables. Close contacts include the Amana Nova foundation with experience working in the poor NE Bali villages, and in West Africa.
Progress So far
The system was invented in Austria & one instance has been built there. Vortec developed the idea and localised it to a Balinese context, including building a couple of partial prototypes. Currently (feb10) funds and a site have been secured for the first live system.
Challenges
The biggest challenge of this innovation, is also its greatest strength, once deployed successfully in one location it will be possible for any village to copy it.
In Bali, water has significant spiritual significance, and the team will need to sensitivity to avoid resistance. Related Links on this Site |
