Headquarters of the Guyana Land Development Public Establishment

  • Building Type : Office building < 28m
  • Construction Year : 2017
  • Delivery year : 2017
  • Address 1 - street : 97357 MATOURY, GUYANNE FRANCAISE, France
  • Climate zone : [Af] Tropical Wet. No dry season.

  • Net Floor Area : 1 800 m2
  • Construction/refurbishment cost : 4 200 000 €
  • Cost/m2 : 2333.33 €/m2
  • Primary energy need :
    114 kWhep/m2.an
    (Calculation method : RT 2012 )
Energy consumption
Economical buildingBuilding
< 50A
A
51 à 90B
B
91 à 150C
C
151 à 230D
D
231 à 330E
E
331 à 450F
F
> 450G
G
Energy-intensive building

The construction, intended for offices, is composed of two parallel buildings. The buildings are located in the direction of the slope of the ground, with access to the upper part of the land, giving directly onto an esplanade that allows access to the offices from the parking lots. A convivial space protected by a stretched canvas connects the two buildings to each other and allows the users to meet in the shelter of the sun and the rain, having a view on the magnificent landscape located below.

The building produces the energy needed to refresh it, its lighting and its operation by a field of photovoltaic panels which will also eventually charge electric vehicles.

The buildings are composed of 3 levels, including an R-1 level partially embedded in the natural ground.

Data reliability

Self-declared

Stakeholders

    Contractor

    EPFAG

    Aurélie Brunelot et Boris Rotsen.

    Willingness to build a headquarters in accordance with the sustainable development approach undertaken in the development projects carried out by EPFAG in urban planning and land-use planning.


    Thermal consultancy agency

    INGEKO Energies

    Pierre PERROT - Michel EHRESMANN : contact@ingeko-energies.fr

    Assistance to project management for the design of high energy performance and the feasibility of an integrated renewable energy production, in the spirit of a transposition of the BEPOS approach in the Guyanese context. Photographer


    Designer

    amarante architecture

    amarante.archi@orange.fr Laurent Chamoux architecte

    Overall design of the project with the workshop Yves Le Tirant de Kourou. Amarante was a proxy architect and took care of bioclimatic design, heliodon and site monitoring, as well as the choice of the BET MDE Ingeko.

Contracting method

Separate batches

Owner approach of sustainability

The EPFAG is a strong actor in the creation of Guyanese territory. From the very outset of his own headquarters, he decided to create the first bioclimatic energy-positive building in Guyana. In addition, the building is located at the Amazonian Factory, Guyana's first business plateau. It must therefore, by its strategic positioning, be exemplary in terms of building a tertiary building.

Architectural description

- Implementation of the building in the direction of the prevailing winds - fretted roof and large edges - solar protections on the facade, coupled with large windows allowing significant natural light inputs - insulation of walls and floors - use of local wood - installation of photovoltaic in superimposition in roof and wind - treatment of hygienic air for comfort of users in a humid climate - high-performance centralized air conditioning of the DRV type allowing in-air comfort, quiet operation and low consumption. - geographical location in the vicinity of commercial activities and residential areas, making it possible to limit the transport by car

If you had to do it again?

We would pay even more attention to the design phase in which many site hazards can be avoided. This phase must be longer to shorten the realization.

Building users opinion

Pride in working in a building that produces more energy than it consumes

Energy consumption

  • 114,00 kWhep/m2.an
  • 400,00 kWhep/m2.an
  • RT 2012

  • 97,00 kWhef/m2.an
  • Electricity is the only energy used in the building.
    The distribution of consumption is:
    - Heating: 0%
    - Air conditioning: 45%
    - Lighting: 8%
    - Ventilation: 7%
    - ECS: 0%
    - specific uses (offices): 40%.

    Conventional energy consumption (5 uses) amounts to 114 kWhEP / m² / year, total consumption at 194 kWhEP / m² / year

    In the absence of official value, the Electricity -> Primary Energy conversion factor is set at 2 for the Guyanese coastal electricity network (65%).

    The actual consumption is measured by the GTB system, distinguishing the different zones and uses (air conditioning, lighting, other uses, production).
    The data will be used for feedback after a full year of use of the building.

    The use of the RT2012 calculation standard for this project in the Guyanese context required the following adaptations: climatic zone H3, office use, summer comfort CE2, climatic data standard hours.
    The reference values are:
    CEP max: 132 kWhEP / m² / year
    CEP BEPOS: 79 kWhEP / m² / an
    Bbio max: 168

Envelope performance

  • 1,70 W.m-2.K-1
  • The Guyanese building standards do not yet incorporate the insulation of the vertical walls or the double glazing. The heat loss coefficients are therefore generally high.
    However, in a tropical climatic context, the Ubat criterion is not the only representative of the energy performance of the envelope, as the internal / external temperature differences are generally low. On the other hand, it is essential to reduce as much as possible the solar contributions, the main source of thermal discomfort and energy consumption.

    In the present case, considerable efforts have been made to insulate the vertical walls of the air-conditioned areas, protection devices against direct sunlight (roof overhang, horizontal solar shading, peripheral netting, etc.) supplemented by a Solar control glazing.
    Overall, the solar factor of the building envelope is of the order of 5%, at a very high level.

  • 0,60

Systems

    • No heating system
    • No domestic hot water system
    • Fan coil
    • Tape
    • VRV Syst. (Variable refrigerant Volume)
    • compensated Air Handling Unit
    • humidity sensitive Air Handling Unit (hygro A
    • Solar photovoltaic
    • Micro wind
  • 65,00 %
  • The photovoltaic field has been sized to cover all electricity needs annually: 60% of the production is directly used for self-consumption and does not leave the building, the remaining 40% is made available to the electricity network for other uses of electricity. The ZAC.

    The micro-aerogenerator has the role of an urban demonstrator: the wind turbine with vertical axis and rated power of 1kW is mounted on a mast of 7m.

    3D simulation of solar contributions with complete heliodon during design to detect critical areas. Implementation of adapted devices (horizontal and vertical sunscreens, roof edges, special glasses) to protect glazing

Smart Building

    A little early to define it, the building being occupied for only two months. An analysis is planned with users during the sixth month of use.

GHG emissions

  • GHG emissions related to the energy needs of the building are estimated at 53 kgCO2eq / m² / year on the basis of a carbon factor of 545gCO2 / kWh_el of electricity in the Guyanese coastal network. These emissions are offset by photovoltaic production

Life Cycle Analysis

    There was no LCA for this project. However, the constructive principle adopted (metallic structure, collaborative floors and wood-frame walls) has significantly reduced the use of concrete and incorporated volumes of wood

Health & Comfort

    L'ambiance intérieure est régulée à 25°C / 70% hR en période d'occupation.

Product

    Photovoltaic panels AXITEC 260P

    axitecsolar

    http://www.axitecsolar.com

    Rohbau / Passivsystem

    Pride of site users

Construction and exploitation costs

  • 270 000,00
  • 406 900
  • 4 424 900

Urban environment

- set up on a business platform, dedicated to business real estate - is located close to commercial activities and residential areas, allowing to reduce car journeys

Land plot area

2 530,00 m2

Built-up area

55,00 %

Parking spaces

- parking lots positioned on the business premises, at the rate of 1 place per user
- expectations for electric charging stations have been put in place, in connection with the solar production of the building.

Building Environmental Quality

  • Building flexibility
  • indoor air quality and health
  • acoustics
  • comfort (visual, olfactive, thermal)
  • energy efficiency
  • renewable energies
  • integration in the land
  • building process
  • products and materials

Contest categories

Energie & Climats Chauds

Energie & Climats Chauds

Coup de Cœur des Internautes

Coup de Cœur des Internautes

Green Solutions Awards 2017 - Bâtiments


Author of the page


  • Other case studies

    More

    Contest

    Green Solutions Awards 2017 - Bâtiments