Forms of Energy #7

Marco Acerbis and POLINS: photovoltaic meets design and architecture.

Portogruaro, situated on the eastern edge of the province of Venice, on the border with Friuli Venezia Giulia and between Italy and Eastern Europe, has made sustainable development the cornerstone of its policies. With a focus on sustainability, the local administration has developed several urban plans and a project called "Portogruaro Città Solare". The latter includes a municipal action plan to improve energy efficiency and the use of renewable sources in the urban context that will identify potential energy solutions via analysis of technical and operational implementation methods and programmed action planning. Portogruaro is putting itself forward as a model, not only for its energy and environmental policies but also and primarily because of its intention to share them with its population and implement them by searching for new and efficient architectural forms that will improve the city.
This ongoing search for new, modern and original architectural forms that combine innovative technological energy efficiency solutions and the cooperation between City and the Portogruaro Campus university body (Università Ca' Foscari, Venice) has produced POLINS, the Polo dell'Innovazione Strategica, situated in the Eastgate Park, the largest combined logistic, industrial and small-business park in the eastern Northeast (1.8 million m²).
The park features both business sites and green spaces and sits at a strategic crossroads for international trade, close to Pan-European Corridor 5, one of the great European road and rail routes. POLINS, designed by the architect Marco Acerbis, is a multifunctional building that provides consultancy services to businesses, small and medium-sized in particular, favouring the development of new business models and bringing together the university, consultancy and enterprise worlds. POLINS encourages companies to regularly question their business model using the provocative slogan "if it works, it is old hat!"
Architecturally speaking, the building is set in an area given over mainly to grassy spaces and stands out for its simple and essential geometric arched form, which highlights its different function from the buildings around it.
Facing south, the form and materials were studied to maximise free solar input and minimise energy requirements in summer and winter. The originally flat site was moulded to create an embankment that entirely covers the north side of the building as well as part of the east and west elevations, leaving only the mainly glazed south side completely free. It is this attention to detail - the way the building is attached to the ground and relates to the sun but also in every single part of the envelope and its systems - that ensures it blends with the context of the landscape of which the building forms a part. The curve on the north side generated by the embankment continues visually with large laminated fir arches with 33-metre spans that reach over the whole building, welcoming visitors on the outside and "protecting them" on the inside.
The building layout develops on just one floor, measuring approximately 400m², to include a reception, a hall, a conference hall, a meeting room, offices and service spaces. The plant room is in a block set to the north and hidden inside the embankment. The building has CasaClima Class A+ certification and adopts eco-friendly materials, such as chipboard, and renewable sources, such as geothermal and photovoltaic energy.
Design-wise, the photovoltaic system forms a natural continuation of the roof, which separates geometrically from a continuous sheet into rows of photovoltaic modules. These modules become a simple but refined part of the architecture. Although nothing special in themselves, they form an essential part of the building's design, especially on the south front, sitting along the main south-facing front, at the top of the laminate wood arches. They protect this outward extension of the building, preventing overheating inside in the summer months, when the sun reaches its maximum elevation and irradiation, and favouring solar capture in the winter months.
A secondary module-support structure, arranged in three rows at different heights, sits on top of the curved arches, fulfilling the desire to achieve the optimum tilt for the site latitude (35°), and the distance between the rows prevents the modules shading each other. The support structure is also the product of a study focusing on tiny detail, as if it were a single design object: the modules are hooked onto the reticular galvanised-steel structure, in turn fixed to the laminate wood arches, and the back of the modules blends with the structure thanks to the application of micro-perforated mesh. This morphology of this photovoltaic sunshade therefore integrates perfectly with the building and its proportions and harmony are based on a rational calculation of solar routes as well as site and user needs - a successful compromise between energy performance and looks that will satisfy lovers of performance and lovers of good architecture both.

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