Recuperator photographed on December 22nd,1923

Recuperator photographed on December 22nd,1923. Charles-Pierre Quillard’s recuperator adapted to all heating devices without modifying existing facilities. It optimized these heaters by recovering heat evacuated by the fireplace, while only taking up limited space. The device was composed of a cylindrical container with a pipe running through it that collected ambient cold air. This cold air was heated inside the cylinder when it came in contact with its walls, heated by hot gases. At the end of its journey, the hot air was released from the top of the cylinder through a flared, curved pipe. Quillard’s recuperator recovered the majority of thermal energy escaping the fireplace and thus averted the need for construction of extensive and often unsightly pipes covering a longer distance and surface area inside the heated room. Office national des recherches scientifiques et industrielles et des inventions. Extract from the book Inventions 1915-1939 by Luce Lebart.