Stakeholders

Function : Contractor

SIEMP

[email protected]

 http://www.siemp.fr/

Function : Designer

Armand Nouvet (BNR architectes)

Armand Nouvet [email protected] et Julien Boidot [email protected]

 http://armandnouvet.wordpress.com/

Function : Thermal consultancy agency

SNC Lavalin

 http://www.snclavalin.com/index.php?lang=fr

Function : Other consultancy agency

RFR Éléments

Benjamin Cimerman [email protected]

 http://www.rfr-elements.com/

Function : Company

Francilia

 http://francilia.fr/

Function : Others

BTP Consultants

Contrôleur technique

 http://www.btp-consultants.fr/

Function : Others

GTIF

 http://www.gtif.fr/

Function : Environmental consultancy

Energy consumption

• Primary energy need : 49,80 kWhep/m².an
• Primary energy need for standard building : 91,50 kWhep/m².an

Calculation method : RT 2005

Breakdown for energy consumption : 24.2 HeatingLighting 2.1VMC 1.40.7 AncillaryECS 14.8TOTAL 43.2

Real final energy consumption

Final Energy : 43,20 kWhef/m².an

Envelope performance

• Envelope U-Value : 0,56 W.m^-2.K^-1
More information :

It is important to remember that in parallel to research on solar energy capture (double glass façade, collector wall), the project also seeks to retain this energy, hence a substantial wall insulation. Also, when possible, the insulation is placed on the outside, in order to limit thermal bridges (R ≥5 Km² / W). When the constructive processes don't allow any insulation on the outside, a insulation on the inside is chosen (R ≥ 5.3 Km² / W), coupled with thermal bridge breakers at the slab (Ψ ≤ 0.25 W/ml.K). On the roof, insulation is also external (R ≥5 Km² / W); on ground level floor, parking floors re insulated on the underside (R ≥ 6 Km² / W), with a vertical drop of insulation of at least 50 cm - the floors on terreplein are also insulated on the underside (R ≥ 5 Km² / W, cellular glass type "foamglass" or equivalent)

More information

On the façade, the glass double skin is thickened fore the living-room to become an actual sunroom and a micro-greenhouse. It lets sunrays through to reach to the collector walls. Those are great black prefabricated concrete elements. In the winter, the air those collector walls and the sunroom preheat is distributed by humidity sensitive air handling unit (Hygro B) into the rooms. In the summer, highly reflective blinds act as blockers for the collector walls, which prevents any undesired overheating. The physical principle of collector walls is based on 5 properties: color (solar absorption), the shape (profile), the thickness, the material and roughness. The double skin frontage includes glass bays with maximum transparency it is a glazed maximum transparency (T e ≥ 90% "extra light" type) of a heavy dark collector wall, then comes the insulating material (thermal resistance R 3.75 k.m² / W).

Systems

Heating system :
• Condensing gas boiler
• Water radiator
Hot water system :
• Condensing gas boiler
• Solar Thermal
Cooling system :
• No cooling system
Ventilation system :
• Humidity sensitive Air Handling Unit (Hygro B
https://www.construction21.org/france/data/sources/users/2242/docs/chaudiere-rue-des-orteaux.docx

Renewable systems :
• Solar Thermal
• Renewable energy production : 45,00 %

Urban environment

In the early 2000s, the rehabilitation of the Reunion district, in Paris 20th arrondissement coming to an end. Only the renovation of the "Fréquel Fontarabie" neighborhood remains. This block is recognizable for its disparate and often degraded housing: modern buildings and picturesque buildings of parisian faubourg architecture are mixed around large empty spaces. The housing stock is particularly dilapidated.
The project:
Deepened concertations with participatory workshops were conducted in the area. Dialogue between residents, associations, developers and technical services for the City allowed the project to be born as it is presented today. The goal is to reduce insalubrity by creating housing following the standards of modern comfort. The existing school sees its courtyard extended and renovated while the area adopts new proximity equipments (Medical Center for Children and a childcare center) and local activities. The land at the center of block is now transformed into a public green space and pedestrian areas. New buildings now coexist with rehabilitated ones. Their studied proportions and volumes allow to recreate a continuous fabric directly inherited from the spirit of traditional suburbs around the central space. Finally, high demands on sustainable development are emphasized and the new block becomes an exemplary eco-city. The site has been noticed during the eco-cities competition in 2009 for its energy savings.

Construction and exploitation costs

• Global cost : 3 750 000,00 €

GHG emissions

• GHG in use : 10,00 KgCO₂/m²/an