Stakeholders

Function : Contractor

SNC PARANJOU c/o FONCIERE DE LUTECE
ntennevet@macifimo.com

Function : Assistance to the Contracting Authority

CBRE Project

Function : Assistance to the Contracting Authority

EGIS CONSEIL
In charge of the building environmental certifications

Function : Designer

SAHUC & KATCHOURA

Function : Thermal consultancy agency

LAFI

Function : Construction company

BOUYGUES BATIMENT ILE DE FRANCE - Rénovation Privée

Function : Certification company

CERTIVEA
01 40 50 29 09

Contracting method

General Contractor

Owner approach of sustainability

The contractor wished to have this operation following an Environmental Quality approach. He decided to launch the project in a HQE certification approach for Tertiary Building Renovation in its version of 25 January 2013.

Architectural description

The construction involved the renovation of office spaces, without interior arrnagements and furniture, and including the change of floorings and interior walls, suspended ceilings and the complete overhaul of technical equipment (heating, air conditioning, electricity ...).

Building users opinion

To meet the goals of the environmental certification of the building and to follow the satisfaction of the inoccupants after they moved in, a commissioning mission will be undertaken.

Energy consumption

• Primary energy need : 68,44 kWhep/m².an
• Primary energy need for standard building : 103,37 kWhep/m².an

Calculation method : RT 2005

Breakdown for energy consumption :

70% of improvement from the initial state.
Heating : 20.247 ,
Cooling: 10.110,
Hot Water: 0000,
Ventilation: 22 085,
Auxiliaries: 0.931,
Lighting: 15,066

• Initial consumption : 233,66 kWhep/m².an

Envelope performance

• Envelope U-Value : 0,85 W.m^-2.K^-1
More information :

Exterior walls
Installation of a lining inside insulation of 7.5 cm thickness of lambda = 0.039
Timber joinery Uw = 1.6 / Double glazing with argon gas Warm edge 4/16/4 Ug = 1.1 TL = 80 % for a good resource in natural light and limit lighting consumption FS = 0.63

Roofing
Installation of 25 cm of insulation lambda = 0.038

Indicator : I4

• Air Tightness Value : 1,70

Systems

Heating system :
• Urban network
• Fan coil
Hot water system :
• Individual electric boiler
Cooling system :
• Urban network
• Fan coil
Ventilation system :
• Double flow heat exchanger
Renewable systems :
• No renewable energy systems

Contractors wished to connect to the urban networks (heating and cooling)

Smart Building

BMS :

Two levels of sub-metering with the possibility of specific monitoring of energy consumption by item (Counts lighting, air conditioning, ECS) beyond the regulatory requirements of the energy metering

Product

Double low emissivity glazing argon gas
SAINT GOBAIN GLASS
0820810820

Product category : Second œuvre / Menuiseries extérieures

Double glazing with argon gas Warm edge 4/16/4 Ug = 1.1 TL = 80% for a good resource for natural lighting and thus reduce lighting consumption FS = 0.63

Product meeting the environmental requirements of the operation

Air handler
SWEGON
04 37 25 62 10

Product category : Génie climatique, électricité / Ventilation, rafraîchissement

CTA turbofan with highly efficient heat recovery system (efficiency greater than 80%)

Product meeting the environmental requirements of the operation

Urban environment

The project is located in the center of Paris, in the heart of the CBD (Central Business District) in the 8th arrondissement. This location allows the building to benefit from good transportation services and easy connection with the city networks.

Building Environmental Quality