Abstract: An apparatus for manufacturing a cell of a recuperator wherein the cell includes a plurality of primary surface sheets, a plurality of spacer bars and a pair of guide vanes. A fixture has a top portion and a bottom portion. The top portion is pivotably movable between an open or loading position and a closed or welding position. A plurality of the spacer bars, plurality of primary surface sheets and a pair of guide vanes are positioned in the fixture in a preestablished relationship and are fixedly attached one to another by a tack welding machine. A controller operative controls the tack welding machine.

Abstract: A cell of a recuperator has a passage therein having a first end and a second end. In use a fluid passes through the passage under pressure. The cell must be tested to determine an operational efficiency or leakage within the passage. A pair of sealing mechanisms is positioned at a respective one of the first end and the second end of the passage. A vacuum is pulled across the passage and a rate of leakage is monitored to define an operational cell and a failed cell.

Abstract: A cell of a recuperator has a passage therein having a first end and a second end. In use a fluid passes through the passage under pressure. The cell must be tested to determine an operational efficiency or leakage within the passage. A pair of sealing mechanisms is positioned at a respective one of the first end and the second end of the passage. A vacuum is pulled across the passage and a rate of leakage is monitored to define an operational cell and a failed cell.

Abstract: An apparatus and a method is disclosed for manufacturing a cell of a recuperator. The cell includes a plurality of primary surface sheets, a plurality of spacer bars and a pair of guide vanes. A fixture has a top portion and a bottom portion. The top portion is pivotably movable between an open or loading position and a closed or welding position. A plurality of the spacer bars, plurality of primary surface sheets and a pair of guide vanes are positioned in the fixture in a preestablished relationship and are fixedly attached one to another by a tack welding machine. A controller operative controls the tack welding machine.