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BIMODE

BIMODE. Development of Bifunctional Photovoltaic Modules for Building Integration BIMODE. A cost shared collaborative R&D Contract between BP Solar, KHM, Bayer AG, Ove Arup, AIOU, IES and TFM, funded in part by DG XII of the European Commission under contract JOR3 CT97 0175 Enerbuild Number 22

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BIMODE

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  1. BIMODE

  2. Development of Bifunctional Photovoltaic Modules for Building Integration BIMODE A cost shared collaborative R&D Contract between BP Solar, KHM, Bayer AG, Ove Arup, AIOU, IES and TFM, funded in part by DG XII of the European Commission under contract JOR3 CT97 0175 Enerbuild Number 22 Co-ordinator: Dr T M Bruton, BP Solar Presenter : Dr MH Patterson, BP Solar

  3. BIMODE:A project to combine the best of both worlds Environmentally friendly Photovoltaic cells Available in a range of sizes,shapes and colours Artists and architects Skilled in enhancing the visual environment Through the use of form, Shape and colour

  4. BIMODE Project Organisation: Project Co-ordination BP Solar Task 2 Task 3 Task 4 Task1 Supply of Multicrystalline wafers Modelling of Solar Cell Arrays Aesthetic Design Solar Cell Processing KHM Bayer BP Solar IES Task 5 Prototype fabrication TFM

  5. BIMODE • Objective • To develop a range of prototype modules with solar cells of varying shape, texture size and colour which have high visual and aesthetic appeal and function as electricity generator in building integration. • Specifically four prototypes will be manufactured one of which will have an 8% module efficiency

  6. Cube Module

  7. Examples of triangular cell and module designs.

  8. Triangular Module

  9. Possible Renovation of St. Gertrude Church in Cologne using the triangular prototype.

  10. Picture of Bruno Taut’s glass pavilion with triangular modules

  11. Striped Module

  12. Striped module design and application of the striped module to the Mannesmann multi storey car park.

  13. Prototype design of hexagonal module with sinusoidal bus bar design. • 200 hexagonal cells • Sinusoidal busbars • Cells >10% efficiency

  14. Prototype Module Results Module Isc [A] Voc [V] FF Pmax [W] Module-Eff [%] “Triangular” 1.49 14.55 0.62 13.4 6.3 “Striped” 6.05 17.37 0.63 66.1 7.6 “Hexagonal” 2.98 46.07 0.62 86.0 6.7 “Cube (dark blue)” 3.04 21.95 0.78 52.1 12.1 “Cube (steel blue)” 2.72 21.77 0.79 46.6 10.8 “Cube (titanium)” 2.67 21.94 0.77 45.2 10.5

  15. Deliverables • Report on different casting conditions to produce large and small grain multi-crystalline silicon • Report on modelling of cell interconnection to allow minimum mismatch when cells of different size and colour are interconnected • Design and demonstration of four prototypes with cells of different shape and colour • A seminar ( Cologne 1999) illustrating the aesthetic possibilities to architects and designers. • Design of application of BIMODE modules to actual buildings.

  16. Conclusions • The project is complete and has demonstrated that PV modules can be viewed as works of art and still generate useful electrical power. • The existence of BIMODE modules has stimulated interest in the use of PV integrated in buildings as a means of enhancing the building appearance and adding value through its aesthetic appeal.

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