RECUPERATOR Russian patent published in 2003 - IPC

FIELD: heat engineering; mechanical engineering; metallurgy; power engineering and other industries. SUBSTANCE: recuperator has coaxial cylinders forming central gas supply passage and outer and inner circular air passages which are interconnected in succession and circular axial swirler mounted at inlet of air flow to inner circular passage. Cylinder forming central gas supply passage consists of two interconnected parts. Secondary radiator made in form of three-lug cross-piece is mounted in first part (in way of motion of gas) of cylinder. Second part of central gas supply passage is made in form of transversely corrugated cylinder at corrugation opening angle of 10-12 deg. Said recuperator enhances operational efficiency due to intensification of heat exchange process and reduction of hydraulic resistance. EFFECT: enhanced operational efficiency. 2 cl, 1 dwg