SU1353980A1 - Device for intensification of heat exchange - Google Patents

Abstract

Invention m. used in engineering, metallurgy, energy industries. The purpose of the invention is to increase efficiency by increasing heat transfer from the flue gas side. For this, the second part of the radiator is made in the form of a hollow cylinder 3 that is plugged on both sides to reduce heat loss by radiation into the recuperative space. The side walls of the cylinder are made transversely corrugated to increase the heat exchange surface and turbulize the flue gas flow with minimal energy consumption. 3 silt (L with ate with; about 00 libiMoSbie gases Phys. 1

Description

The invention relates to heat engineering, in particular to heat exchangers designed to use heat from waste gases, and can be applied in engineering, metallurgy, energy and other industries.

The aim of the invention is to increase efficiency by increasing heat transfer from the flue gas side.

FIG. 1 shows a device for the intensification of heat transfer dispersed in a radiation recuperator, a general view; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one.

The device contains 1 secondary emitter placed along the gas line input. It consists of two interconnected parts. transversely corrugated allows 5 to increase the heat exchange surface and maximally turbulize the flow of flue gases with minimal energy consumption. The opening angle of the corrugation should be 10-12 °, since when the opening angle is less than 10 °, the heat exchange rate decreases, and when the opening angle is greater than 12 °, the hydraulic resistance increases significantly.

Cylinder 3 is made muffled on both sides to reduce heat losses by radiation in the post-recuperative space.

To facilitate maintenance and repair, the secondary radiator is easily removable and is fixed in the gas duct 1 by means of spacers 9.

The ratio of the two parts in 25

the cross 2, and the second, in the form of a hollow, 20th radiator, is defined in each cylinder 3 plugged on both sides with a transversely corrugated side wall 4 and a conical bottom 5. The duct 1 is framed by an annular air duct m 6 with connections 7 and 8, respectively supply and exhaust air. The secondary emitter is provided with spacers 9.

The device for the intensification of heat transfer works as follows.

Hot flue gases with a temperature of 900–1300 ° C enter the gas duct 1, in which a secondary radiator is installed. When the flue gases pass through the gas duct 1, its walls are heated and heat is transferred to the air passing through the annular channel 6. Installing the radiator in the form of a three-petal cross 2 allows maximum use of the emissivity of both hot flue gases and the radiator of a three-petal cross 2 .

As the flue gas cools as it progresses through the flue 1,

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specific case separately, provided that when entering the zone of the second part of the radiator cylinder 3, the temperature of the flue gases should not exceed 800 ° C.

The proposed secondary emitter allows for more in-depth utilization of flue gas heat.

Claims (1)

Invention Formula A device for intensifying heat exchange, mainly for a radiation recuperator, containing a secondary radiator placed along the length of the duct, made of two interconnected parts, the first of which is made in the form of a three-sparse cross, along with the aim of increasing efficiency by increasing heat emission from the side of the flue gases, the second part of the radiator is made in the form of a hollow, stupidly reaching a temperature of about 800 ° C Parts Required intensify their convective pepper corrugated side wall and the hydrochloric component that is performed conical bottom. using the second part of the radiator, a hollow cylinder plugged on both sides of the cylinder 3. Making the side walls 4 of the cylinder 3 transversely corrugated allows increasing the heat exchange surface and maximally turbulizing the flue gas flow with minimum energy consumption. The opening angle of the corrugation should be 10-12 °, since when the opening angle is less than 10 °, the heat exchange rate decreases, and when the opening angle is greater than 12 °, the hydraulic resistance increases significantly. Cylinder 3 is made plugged on both sides to reduce heat loss by radiation into the post-rekperator space. To facilitate maintenance and repair, the secondary radiator is easily removable and is fixed in the gas duct 1 by means of spacers 9. The ratio of the two parts of the secondary radiator is determined in each emitter is defined in each specific case separately, provided that when entering the zone of the second part of the radiator cylinder 3, the temperature of the flue gases should not exceed 800 ° C. The proposed secondary emitter allows for more in-depth utilization of flue gas heat. Invention Formula A device for intensifying heat exchange, mainly for a radiation recuperator, containing a secondary radiator placed along the length of the duct, made of two interconnected parts, the first of which is made in the form of a three-sparse cross, along with the aim of increasing efficiency by increasing heat emission from the side of flue gases, the second part of the radiator is made in the form of a hollow cylinder plugged on both sides with a cross-corrugated side wall and shteny on both peppers goffered conical bottom. Phage. 2  Rig.Z Editor O. Golovach Order 5327/33 Compiled by. Neverova Te.hredI. VeresKorrector / 1. Patay Circulation 495 Subscription V11IIG1I State Committee C SSR do inventions and discoveries 1 13035, Moscow. Zh - 35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, ul. Project, 4