Solar concrete wall offers energy saving flexibility
The façade, designed by RECKLI to fit the solar film represents a novel approach to Building Integrated Organic PV (BIOPV) and demonstrates the next step towards a sustainable, net-zero energy building. With an installed power of 1kWp, the south-west oriented wall will supply around 500 kWh of electricity per year. The energy produced will be used directly by Reckli.
The solar active concrete wall is the result of a joint development project of RECKLI, the world leader in the design and manufacture of elastomeric formliners, and PV innovator Heliatek.
The annual energy output is expected to be about 25% above the yield of silicon technology. Heliatek has already shown that its solar film, HeliaFilm, delivers more
energy under overcast sky conditions and at high temperatures compared to traditional solar cells. This advantage is based on the properties of its organic semiconductor. In addition, HeliaFilm allows a wide range of colors and flexible layouts – both features sought after by architects and planners.
The solar active concrete façade in Herne comprises three rows of concrete modules with vertically mounted integrated solar film (total area: 16.80 m x 3.50 m).
"We focused for this pilot installation on how to combine the solar film and concrete modules in a reliable and aesthetic manner," explained Peter Henning, Sales Manager of RECKLI. "We want to demonstrate to architects, planners and investors, how the solar concrete future looks like."
Dr. Thomas Bickl, Heliatek’s VP Sales & Product Development, added: "The unique features of our solar films like ultra-thin, low weight and flexible layout fit this application perfectly. About 130 million square meters of concrete façades are installed every year worldwide – this is our target market."
RECKLI and Heliatek have been working together for three years on smart façade solutions, which combine various concrete structures and HeliaFilm. By using different colors, concrete facades can be aesthetically enhanced and simultaneously supply energy to meet urban power requirements.
One major advantage of using HeliaFilm is that there is no need for ventilation or cooling systems in order to operate effectively. Additional pilot projects of RECKLI and Heliatek are in the pipeline for 2016. Market entry is planned for the second half of 2017.
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