Wolkenkrabber Adres: 20 Fenchurch Street, Londen geeft warmteoverlast in de buurt. In de straten voor de wolkenkrabber loopt de temperatuur soms op tot 90 tot 120 graden.
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Mavo 2/3/4, Havo 2/3, VWO 2/3 |
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Doel |
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Leuk voorbeeld van een parabolische spiegel, gevormd door de beglazing van een naar binnen gebogen gevel van een nieuwe wolkenkrabber in Londen, waarbij aan de overkant van de straat op één punt enorme hitte ontstaat. |
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Nodig |
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Links |
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http://nos.nl/l/547549; http://en.wikipedia.org/wiki/20_Fenchurch_Street |
Bron: wikipedia
Solar glare problem
During the building's construction, it was discovered that for a period of up to two hours each day if the sun shines directly onto the building, it acts as a concave mirror and focuses light onto the streets to the south. Spot temperature readings including up to 91 °C (196 °F)[20] and 117 °C (243 °F) were observed during the summer of 2013, when the reflection of a beam of light up to six times brighter than direct sunlight shining onto the streets beneath damaged vehicles parked on the street nearby, including one on Eastcheap whose owner was paid £946 by the developers for repairs to melted bodywork. The reflection also burned or scorched the doormat of a shop in the affected area. The media responded by dubbing the building the "Walkie Scorchie" and "Fryscraper".
In September 2013, the developers issued a statement saying that the City of London Corporation had approved plans to erect temporary screening on the streets to prevent similar incidents, and that they were also "evaluating longer-term solutions to ensure the issue cannot recur in future". In May 2014, it was announced that a permanent awning would be installed on the south side of the higher floors of the tower.
The building's architect, Rafael Viñoly, also designed the Vdara hotel in Las Vegas which reportedly has a similar sunlight reflection problem that some employees called the "Vdara death ray". The glass has since been covered with a non-reflective film.
In an interview with The Guardian, Viñoly said that horizontal sun-louvers on the south side that had been intended to prevent this problem were removed at some point during the planning process. While he conceded that there had been "a lot of mistakes" with the building, he agreed with the building's developers that the sun was too high in the sky on that particular day. "[I] didn't realise it was going to be so hot," he said, suggesting that global warming was at fault. "When I first came to London years ago, it wasn't like this ... Now you have all these sunny days."
