Herning Energy Promenade defines a familiar yet otherworldly space that harmoniously complements and enhances its surroundings. The envisaged new park integrates recreational activities with clean energy generation raising environmental awareness through the simplicity of its operation. The iteration of a specifically designed wind turbine is the key feature of the proposal. The vegetation currently on site is organically integrated with these wind energy harvesting devices. The project imagines a curved promenade to improve the overall experience of movement and the vision is to retain as many as exhisting trees as possible.
The new turbine design can compete with the conventional horizontal axis wind turbines for several practical reasons. Due to their shape and weight they will be self-starting and able to rotate even with the lightest winds. They can be placed at a shorter distance from one another maximizing the usage of the area and improving the overall atmosphere of the site. The simple design is easy to scale and to test, it conveys clarity while revealing the depths that true simplicity entails, it is flexible and suitable for different contexts.
1. The design of this new wind turbine starts from the Savionius vertical axis type: the simplest possible kind of wind energy harvesting device.
2. Cutout: The shape is optimized enlarging the top in order to catch stronger winds and tapering the base where winds are not providing any relevant contribution.
3. Final shape: The minimal footprint contributes to foster the relationship of the turbines with the human scale not obstructing the view and allowing people to come close and walk around them.
The sport fileds and the path leading through Herning energy Promenade work also as second energy generation source. They use piezoelectric material underneath the paving to harvest the energy produced by the steps on the pavement.The movement of the floor also helps to absorb the shock of the feet hitting the pavement while generating energy, making it especially suitable for sport purposes.The idea of energy generation and movement is succesfully combined with sport.The gently sloping hills help a more organic integration of the turbines in the landscape but also set them at different heights improving their performances.
The wind turbines here introduced have dimensions comparable to those of medium size trees in order to engage the human scale and a playful appearance. Their shape and materiality are inspired by sails, while their colours and structures subtly recall the patterns of kites and spinning tops. Both metaphorically and in reality their transparency connects the inner structural elements with the overall shape while encouraging a renegotiated perception of the surroundings.
Part of the efficiency concept is the light construction and the affordable realisation of the turbines. The structure is made of aluminium chosen for its lightness and resistance to corrosion. The sailcloth wrapping thestructure is made of Polyethylene Terephthalate (PET). PET is the most common material used in sailcloth due to its low price and high durability. Both aluminium and PET are between the most common recycled materials allowing the turbines to be 100% made from discarded everyday objects, such as plastic bottles and cans. The turbines themselves can eventually be recycled at the end of their operative life.