The computer-generated models of the new turbine model with four rotors show marked advantages. The study was done by researchers from Aarhus University and Durham University in the UK.
The principle of wind energy is that the turbine will harvest potential energy from the wind. It works on the theory that when wind passes through the turbine blades, a region called turbine wake is created. The region will consist of lower wind speeds and higher turbulence.
The study using the new model suggests that the wake of turbines will recover much faster with multi-rotor turbines from turbulences and currents. Which results in production of more energy with multi-rotor, as the second turbine will generate more electricity as it is being subjected to less stress and load which is a direct result of less turbulence.
The other advantages include lower costs. Researchers have said that the energy output can be easily manipulated by varying the diameter of the motor blades. The building costs and structural upkeep of constructions exceeding 150 metres are very challenging. According to the study a turbine with four blades will result in the building cost going down by 15%, despite the fact that the blades will cover the same area in total. The biggest advantage of this innovation is when compared to a single rotor turbine, if any rotor of the multi-rotor turbine stops working the contraption itself is still functional in opposition to a normal turbine. The energy produced sees a spike of 2% as reported by researchers.
One of the researchers involved, Assistant Professor Mahdi Abkar has said that multi-rotor turbines idea has been explored from various angles and the proposed four rotors one with rotors placed far apart will have the best results.
Tags : Aarhus University and Durham University in the UK, wind turbine,