Development and experimental study of the high efficient flow turbulators for heat transfer enhancement in heat exchangers

The paper discloses investigation of flow turbulator thermal and hydraulic performance. The turbulator intensifies heat transfer in heat exchangers. Two modifications of pin turbulators allow decay of the pin "shadow" zone with low heat exchange coefficient downstream the pin. The intensifier main structural parameters influence thermal and hydraulic channel performance. The results show that the developed intensifiers increase the Nusselt number for 11-36% in the staggered pin-fin arrays. The obtained criteria equations allow the analysis of cooling air heat transfer with ±8% error.