Multi fuel flame-less combustor

A flameless combustor system comprising:

• a combustion chamber extending longitudinally through which an oxidising agent flows in the longitudinal direction from an inlet to an outlet, and
• at least two fuel lines;
• wherein at least one fuel injection pipeline in fluid communication with a first of the at least two fuel lines extends through a wall of the combustion chamber, wherein each fuel injection pipeline contains at least one fuel injector for injecting fuel into the combustion chamber;
• characterised in that at least one of the at least one fuel injection pipelines extends through the wall of the combustion chamber, across the interior of the combustion chamber to an opposite wall of the combustion chamber, and through the opposite wall, such that the fuel injection pipeline is in fluid communication with both the first of the at least two fuel lines and a second of the at least two fuel lines.