SU1557445A2 - Recuperative heat-exchanger - Google Patents

Abstract

The invention relates to heat engineering, in particular to heat exchangers with rotating heating surfaces for heat recovery of low-potential secondary energy resources, for example, in ventilation systems, and is an improvement of the invention according to the author. N 1451522. The goal - the intensification of heat transfer. This is achieved by the fact that the tube surface of drum 6 rotating from the drive 30 is grouped into blocks, in each of which a series-connected group of tubes are made in the form of rows of tubes in pitch concentrically arranged along arcs of circumferences (PT) 7-10. and with a distance between PT 7 - 10 less than two outer diameters. At the same time, due to the reduced pitch of the pipes when they are connected in series and through the chambers 13, 14, 20 and 21, accompanied by an increase in the flow rate of the medium inside PT 7 - 10, as well as due to an increase in the degree of turbulence in the gas stream supplied through pipe 5 Intensification of heat exchange is achieved both on the external and internal sides of the tubes in RT 7–10. 4 Il.

Description

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Claims (1)

and in order to intensify heat transfer, each consecutively connected group of pipes is made in the form of rows concentrically arranged along arcs of rows with decreasing to the center number of pipes in a row, the distance between these rows is less than two, with detectable diameters.