Project Summary
A novel vertical axis wind turbine (VAWT) based on J-shape blades is being developed at Cranfield University for potential future deployment in airports, and support their decarbonisation targets. Numerical simulations carried out under low wind speed conditions and preliminary wind tunnel data obtained on a 3D-printed model, have showed promising results. The technology however needs to be further developed through improving the initial design, carrying out a structural integrity analysis, establishing the level of vibrations, manufacturing a novel composite-based prototype, and testing the technology in a wind tunnel under various wind conditions encountered in airport locations.
Project Achievements
• Computational Fluid Dynamics (CFD) simulations were performed on an updated version of the Cranfield J-shape VAWT. • A composite-based prototype was manufactured in-house using 3D-printed tools for composite curing. • Finite Element (FE) numerical simulations were carried out to check the integrity of the turbine and confirm its safe installation and use under various wind conditions. • Wind tunnel tests were performed, providing confidence in the efficiency of the composite J-shape VAWT turbine. • Discussions with stakeholders were initiated.
Conclusions
• The technology has progressed through this project, from TRL 2-3 at the start of the project, to reach TRL 4. • It was demonstrated through numerical simulations and testing that the J-shape VAWT starts spinning at low wind conditions, as low as 5 m/s. • The composite model produced higher power coefficient than a 3D printed model, due to its higher mass and inertia. • Initial results were presented in the Conference on Solar and Wind Power: Next generation of Energy Solution, June 2024. • The J-shape VAWT has the potential to help airports reach their decarbonisation target.
Next Steps
The innovative J-shape VAWT could be placed on airports, but more work is required to bring the technology to commercialisation. • Improve the model for wind speeds lower than 5 m/s, install a generator and brake system, and test additional materials which are cheaper than composite, and are recyclable. • Discuss further with stakeholders, including airport managers, to help with funding and in-situ testing. • Investigate options to either create a spin-out company or license the technology. • Approach manufacturers and investors.
