Green Stone - heritage renovation into a positive energy building
Last modified by the author on 16/06/2022 - 12:22
Heritage renovation
- Building Type : Office building < 28m
- Construction Year : 1760
- Delivery year : 2016
- Address 1 - street : 44 Victor Hugo 32 000 AUCH, France
- Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.
- Net Floor Area : 852 m2
- Construction/refurbishment cost : 1 450 000 €
- Number of Work station : 1 Work station
- Cost/m2 : 1701.88 €/m2
Certifications :
-
Primary energy need
-7.74 kWhep/m2.an
(Calculation method : Other )
Case study proposed and written by Jean-Baptiste Gilabert as part of his Bachelor Real Estate Business Manager course at the Ecole Supérieure des Professions Immobilières (ESPI) in Marseille .
The site has remarkable energy and environmental performance . The achievement is a success because it is a positive energy heritage building (BEPOS), low carbon , and energy self -sufficient (E4C2 level of Label E+C-).
It was necessary to respect the character of the place, and preserve the old stone frame of the building. The insulation was therefore done by the roof, the floors and the glazing, without insulating the walls (thickness 60 cm).
In addition, 100 m² of photovoltaic panels have been installed behind the building, as well as a 93 kW battery energy storage unit (lithium and lead), to ensure its autonomy.
The materials used are totally biosourced and do not reject carbon . One of the resources is even created with the help of local craftsmen from Gers raw earth: raw earth heating partition (Duoterre), providing all the heating, powered by a 40 kW biomass boiler.
It is the first European building located in a protected perimeter to have been converted into a positive energy and 100% autonomous building. In addition, "Pierre Verte" is the national winner of the Ademe* call for research projects "Towards responsible buildings by 2020" (lighting and IT are supplied with direct current directly from photovoltaics), and is the winner of the 2014 Ademe-Région call for projects “Quality economical buildings in Midi-Pyrénées”.
*Ademe: Environment and Energy Management Agency
Photo credit
Addenda
Contractor
Construction Manager
Stakeholders
Assistance to the Contracting Authority
ADDENDA
Alain Castells, 05.52.66.92.50, amo[at]addenda.fr
Company
SOCOTEC
04.61.16.49.60
Advice
Other consultancy agency
CARTE (conception assistance recherche thermique électrique)
05.59.68.05.10, M. Abily : abily.carte[at]wanadoo.fr, M. Cazenave : ocazenave[at]wanadoo.fr
Thermal, electricity
Company
BATECO
05.61.47.64.64, bateco[at]bateco.fr
Ecological renovation
Company
MALET
05.61.31.70.70
Company
JUSTUMUS
M. Truilhe Christian, 05.62.63.46.46
Plumbing, air conditioning, climate engineering, renewable energies.
Company
TAUPIAC ELECTRICITE
05.62.05.14.26, contact[at]taupiac-electricite.fr
electrical work, troubleshooting, air conditioning and heating.
Company
ASCENSEURS ET AUTOMATISMES DE GASCOGNE
05.62.60.14.28, contact[at]a-a-g.com
Elevators
Company
DUTREY PEINTURE
05.62.68.99.19
Laying of wallpaper, laying of floating floors, laying of carpet, vitrification of parquet floors, decorative painting
Company
Sols de Gascogne
09.61.45.48.43, laurentmur[at]orange.fr
Production of fluid and liquid screeds
Company
NIN
05.62.60.06.00
Company
Cedrick Pujolle
05.62.35.38.77
Company
Olivier Alquier
Company
DAZEAS
05.62.63.04.88, dazeas[at]wanadoo.fr
exterior carpentry
Company
CUNHA ET CASTERA ALUMINIUM
05.62.61.83.39, cunha.castera[at]wanadoo.fr
Aluminum joinery
Company
LES BATISSEUR D’ARCAMONT
contact[at]batisseurs-arcamont.com
Masonry, framework, roofing, stone cutting and insulation
Company
CONSTRUCTION DE LA TENAREZE
05.62.28.18.12
Company
AMIANTE INGENIERIE
05.34.59.05.96
Energy consumption
- -7,74 kWhep/m2.an
- 178,00 kWhep/m2.an
Systems
- Low temperature floor heating
- Wood boiler
- Other hot water system
- No cooling system
- Double flow heat exchanger
- Solar photovoltaic
- Wood boiler
Urban environment
Product
raw earth heating partition
Duoterre
Second œuvre / Cloisons, isolation
Wooden frame partitions filled with wood fiber and coated with raw earth, patinated with natural pigments and linseed oil.
Construction and exploitation costs
- 1 450 000 €
