English to French Tech/Engineering Construction / Civil Engineering

In a document commenting a type of engineering contract. The recovery heater project is given as an example of project that could be carried out using the contract.

From the text, it looks like it is a rather large installation, with shaft, floor pannels, etc. It would apparently take several weeks to build. It appears in a table with the list of material to build it (burners, coils, etc.), but there is not much else to go with in terms of context.

I tentatively went for "Système de récupération de chaleur", but I'm not sure at all.

Thanks for your help.