Solar Chapel Cluster, Franschhoek by Margot Krasojević

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Solar Chapel Cluster, Franschhoek by Margot Krasojević

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Designed by Margot Krasojević, the Solar Chapel is located at the HoldenManz Wine Estate, Franschhoek, Cape Town.

Solar Chapel Cluster, Franschhoek by Margot Krasojević

The project utilizes the same solar panel technology used on the farm to clad a dynamic expanding wedding chapel’s roof structure. The vertiginous mountains within the estate are reflected in the beton brut primary structure off which the concentrator Fresnel lenses, solar panels and holographic filtered panels are suspended. The solar panel arrangement is similar to the angular configuration of a butterfly’s wing receiving more exposure to solar rays affording a maximum electrical output efficiency, the frame expands and contracts enabling a further re-arrangement of this concentrator photovoltaic cluster.

Solar Chapel Cluster, Franschhoek by Margot Krasojević

The concentrator lenses use fewer solar cells to harness the same solar energy as twice the amount without the concentrator Fresnel lenses, the lenses can be programmed to follow the sun in tandem as it moves across the sky taking full advantage of available sunlight, the sliding steel frames onto which they are supported allow for more movement and maximum exposure to solar rays. The main problem we are facing is to cool the concentrator photovltaics, high concentration ratios also introduce a heat problem. When solar radiation is concentrated, so is the amount of heat produced, reducing cell efficiencies as temperatures increase, and higher temperatures also threaten the long-term stability of solar cells, therefore, the solar cells must be kept cool in a concentrator system, requiring sophisticated heat sync cooling designs, in this case the vineyards irrigation system.

Solar Chapel Cluster, Franschhoek by Margot Krasojević

The chapel sits within the vineyard amongst an array of existing solar screens, with the help of the holographic panels it also concentrates and intensifies the solar energy which can be stored and accessed as and when required. The chapel is used for religious fellowship and is a free standing structure epitomizing the duality of the monumental context and the process of wine making.

Solar Chapel Cluster, Franschhoek by Margot Krasojević

Concentrator photovoltaics (CPV)
A CPV system uses mirrors and lenses to concentrate sunlight, the Solar Chapel concentrated Fresnel lenses capture the solar energy shining on a fairly large area then focus that energy onto a smaller area, where the solar cell is located. Concentrators increase the electrical energy output by 50%

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