| abstract |
A fuel processing system comprising: a steam reformer; and a recuperative heat exchanger, wherein the heat exchanger is connected to the steam reformer for conducting a fluid flow having a steam / fuel feed mixture for reforming in the steam reformer, the steam reformer being connected to the heat exchanger for recirculation to the heat exchanger, the heat exchanger comprising: a cylindrical wall; a first folded rib attached to a radially inwardly facing surface of the wall, the folds of the first folded rib for directing fluid flow through the heat exchanger extending axially; and a second folded rib attached to a radially outward surface of said wall, said folds of said second folded rib extending axially through said heat exchanger for directing fluid flow therethrough. |