Energetic Optimization

Synairgis works with project owners and project management teams to optimize energy projects in new construction programs and renovations. Our desire is to find, within the framework of a collaborative work, the architectural and technical solutions best suited to the profile of the building (use, public welcomed, regulatory requirement, etc.).


First of all, the typology of the building is essential in order to understand how it will be used. This concerns the different uses, their occupancy schedules or even the behavioral habits of future occupants depending on the type of public welcomed (setpoint temperature practiced, dissipated power, etc.). To achieve a good design, it is necessary to take into account the terms of occupation in order to adapt the architectural choices and the technical choices and to create favorable conditions for economical use.

Then, based on the terms of occupation and also the requirements relating to the performance levels to be achieved, we intervene at the level of:

  • of the architectural project through the bioclimatic approach which deals with the close environment (sun masks, albedo), the shape, orientation, position and surfaces of the joinery. Structural choices will also have an impact on inertia, as will passive solar protection and the thermal envelope of the building on energy needs.
  • technical solutions for heating, cooling, ventilation and plumbing. The principle is to best adapt the technical choices to the typology of the premises and also to the public to avoid any drift and any disruption. Our expertise in commissioning allows us to push this approach thanks in particular to the monitoring of the first years of operation. In addition, depending on budgetary and technical constraints, we are moving towards solutions mobilizing renewable energies with a detailed approach to sizing and operation. As such, functional analysis plays an important role in the proper understanding of projects by companies and operating departments.
  • the comfort of the occupants over the winter and summer periods, over a short period of time, through the analysis of the evolution of interior temperatures
  • energy performance through the estimation of actual energy consumption from data concerning the building envelope, its inertia, energy systems (regardless of the energy used and taking into account free external or internal contributions ), occupant behavior and local climate.

It is a dynamic thermal simulation that we use as a real optimization tool.

This approach makes it possible in the long term to achieve a project that is truly optimized in terms of energy, which is not the result of an addition of technological innovations, but which is rather access to sobriety. This approach brings together favorable conditions for easy handling by the operating departments.

This approach contributes to:

  • improve the dimensioning of a building

  • provide project owners and contractors with the most realistic approach possible to the thermal operation of the building

  • present reasoned information to the operator of the structure to prepare the commissioning and its day-to-day operation

  • improve and check the level of comfort of the occupants

  • evaluate systems in specific configurations (heat waves, high winds, overcrowding, etc.)

Our strengths:

  • a multidisciplinary and highly experienced team in the commissioning process

  • expertise in HVAC/plumbing and regulation

  • mastery of renewable energies (solar, biomass, geothermal energy) and permanent technical monitoring

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