As our name suggests, at its core our technology is based on the 'venturi effect' and rests on the well recognised physical phenomenon – 'The Bernoulli Principle' – named after Swiss scientist Daniel Bernoulli.
The venturi effect is the reduction in fluid pressure that results when a fluid flows through a constricted section of pipe. According to the Bernoulli Principle relating to fluid dynamics, a fluid's velocity must increase as it passes through a constriction to satisfy the conservation of mass, while its pressure must decrease to satisfy the conservation of energy.
If an air feed (or air transmitter) is installed where the pipe has been constricted, the accelerated fluid flow with its reduced pressure will naturally suck air in from the atmosphere in order to re-equalise the pressure. If a turbine is placed at the air feed, the pulling of air will drive the turbine and allow the generation of electricity adding further value to the savings achieved. The pulling of air into the flow enables introduction of a body of bubbles into the liquid. Thereafter the focus is on controlling the size of the bubbles that form, their shape and behaviour in order to optimise oxygen transfer.
HydroVenturi's technology uses the pressure drop created as the speed of the flow increases to introduce gas into a liquid, particularly, but not exclusively, air into water – but with a twist. Use of state of the art research methods has lead to a highly novel design, centred around a torpedo shaped 'venturi insert' – that provides smaller bubbles with greater control and significantly less energy consumption than alternative approaches.
This provides new opportunities in terms of how the technology can be applied, at what scale, and with what external energy input. Indeed in many situations the technology can be operated with no external energy input at all.
Laboratory testing during the development phase