Patent ID: 7963097

Claim:
A recuperator comprising: a heating gas duct; an inlet manifold; a discharge manifold; and a once-through heating area disposed in the heating-gas duct through which a heating gas flow is conducted, said once-through heating area being formed from a plurality of first single-row header-and-tube assemblies and a plurality of second single-row header-and-tube assemblies, each of said plurality of first single-row header-and-tube assemblies including a plurality of first heat exchanger generator tubes connected in parallel for a through flow of a flow medium therethrough and further including an inlet header connected to said inlet manifold, said each of said plurality of second single-row header-and-tube assemblies including a plurality of second heat exchanger generator tubes connected in parallel for a through flow of said flow medium therethrough from respective said first heat exchanger generator tubes, and further including a discharge header connected to said discharge manifold, each of said inlet headers being connected to said inlet manifold via a respective at least one of a plurality of first link pipes, each of said discharge headers being connected to said discharge manifold via a respective at least one of a plurality of second link pipes, and each of said heat exchanger tubes of each of said first and second single-row header-and-tube assemblies having an inside diameter that is less than an inside diameter of any of said plurality of first link pipes and of any of said plurality of second link pipes.