The presentation of the project will show how the project partners define the concept of a zero-energy building, including aspects of comfort and environmental performance. The approach developed to reduce costs will then be described. And finally the results, in particular those concerning the case studies, will be discussed. The project also includes training and knowledge dissemination activities.

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Digital model of the project (Pleiades).Dynamic thermal simulation results (Pleiades Comfie), temperatures during heatwaves.Life-cycle assessment results (Pleiades Equer), contributions to global warming.

The research work carried out at the École des Ponts ParisTech aims to anticipate mobility practices and services in the Les Lumières Pleyel neighbourhood as well as their impact on the environment. A statistical approach based on analysis of the socio-economic profiles of the individuals who will live and work in the neighbourhood aims to achieve an initial rapid estimate of uses and activities. This approach is then fine-tuned by multi-agent modelling that is aimed at a much more precise estimation of mobility needs and the effects of the implementation of new mobility services. The environmental impacts of associated mobility practices are then assessed through the prism of life-cycle assessment. It is therefore possible to assess the relevance of development choices and to propose solutions that are tailored to local characteristics, in order to improve the environmental performance of a neighbourhood.

the MATSim multi-agent model used by the LVMT laboratory of École des Ponts ParisTech to simulate the mobility of the Île-de-France population.

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The DTS Comfie module also calculates the energy consumption of the equipment (Dynamic Energy Simulation or DES) at each time step with the possibility of recovering heat losses, evaluates several comfort indicators and has a utility to manipulate and generate weather data files.

Comfie is linked to Amapola, which makes it possible to identify the least expensive solutions, anticipate uses and optimise the reliability of forecasts. It is therefore possible to assess energy consumption within the framework of the energy efficiency guarantee with a risk of an overrun of less than 5%. Thanks to data from smart sensors, the software program takes occupants and their behaviour into account.

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The internship, led by Fatima Benali at MINES ParisTech and supervised by Patrick Schalbart, aims to complete the validation of the COMFIE thermo-aeraulic model and to prepare control-command applications.

An initial step will be to carry out a comparison with experimental data and results of other models on a house located in Bavaria. This exercise will make it possible to better understand the influence of various uncertain parameters such as thermal bridges and air infiltration on the simulation results, and to analyse the causes of differences between simulation and measurement.

Control strategies will then be compared in terms of the energy, economic and environmental balance, in order to gain initial experience in automation. The internship can in fact lead to a doctoral thesis concerning the study of an optimal management strategy integrating local energy production on the scale of an urban block.

View of the house considered for the experimental validation exercise.Protocol of the validation test.

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