Installation of heat exchangers on the sewage network for the Bordeaux Natural History Museum

The project

Bordeaux City Council has completely refurbished the Museum de Bordeaux – sciences et nature (formerly the Hôtel Lisleferme, built in 1862), which is located in the Jardin Public. The refurbishment involved the entire building and aimed to reduce energy consumption by a factor of 4 and greenhouse gas emissions by a factor of 6: façade, insulation, interior fittings, museography, LED lighting, etc. 

The inherent constraint of this type of building is the need to ensure constant temperature and humidity control to ensure that the collections are perfectly preserved. To achieve this, two heat pumps constantly produce chilled and hot water to dry the air before heating it to the right temperature.

For this flagship project, it was inconceivable to implement a traditional solution: gas heating and air conditioning. So Bordeaux City Council opted for a process that uses heat from the sewage network, a renewable energy source that is permanently available. 100% of the Museum’s thermal energy comes from renewable sources.

MT Partenaires Ingénierie, together with GIRUS, carried out the design, detailed studies, consultation and selection of contractors, works supervision and acceptance of the heat recovery system in the sewage collector, between 2011 and 2018.

Pour ce projet phare, il n’était pas concevable de mettre en place une solution traditionnelle : chauffage au gaz et climatisation. Ainsi la Mairie de Bordeaux a choisi un procédé de valorisation des calories du réseau d’assainissement, énergie renouvelable de récupération disponible en permanence. 100% de l’énergie thermique du Muséum est assuré par des énergies renouvelables.


« We provide the surplus calories needed by the system and we draw it as a renewable resource from where we can find it as close as possible, in the sewage drains under our feet! »

Michaël Toma, Director of MT Partenaires Ingénierie, on site at the Museum of Natural History in Bordeaux.

Our services

Project management

Complete project management (heat exchangers, heat transfer fluids, installation, network works, instrumentation, functional analysis, electricity, equipment, BMS)

Financing assistance

Putting together a dossier and submitting it to ADEME to obtain a grant under the Fonds Chaleur.


Managing the communication service (video, educational space)


Presentation of the project on several occasions, for example at the European Energy Transition Conference in Bordeaux.