US Patent 7582253 Heat exchanger system used in steel making

A heat exchanger system suitable for iron making furnaces and their supporting exhaust and cooling systems. The heat exchange has at least one panel of sinuously winding piping having an inlet and an outlet, an input manifold in fluid communication with the inlet of the at least one panel, an output manifold in fluid communication with the outlet of the panel, a cooling fluid flowing through the piping, and a stream of hot exhaust gasses flowing over the piping. The heat exchanger system is preferably fabricated using an aluminum bronze alloy. The operational life of the heat exchanger is extended and corrosion and erosion of the heat exchanger and related components is reduced.