SU1515008A1 - Regenerative heat exchanger - Google Patents

Abstract

The invention relates to heat exchange technology and can be used in fuel combustion installations. The invention allows to intensify heat exchange. The heating medium (HS) and the heated medium (HC) enter the circulation circuit of the dispersed coolant (DT). The HS and DT in the chamber (KM) 1 are twisted and mixed in the direction of the channel (KN) 7, through which the DT enters KM 2, where HC is picked up and with it moves to KN 8. From it the DT grains go to KM 1, where HS is picked up, and the DT circulation process is repeated. As a result, heat is transferred from the HS to the HC. In addition, heat from the HS is transferred through a liquid intermediate coolant, which boils in KN 13 KM 1 and condenses in KN 13 KM 2. Thus, additional heat transfer from the HS and HC occurs. The use of the cyclone principle allows to intensify the heat exchange, as well as effectively separate the HS, HC and DT. 2 Il.

Description

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The invention relates to heat exchange engineering and can be used in fuel-burning installations.

The purpose of the invention is to intensify heat transfer.

FIG. 1 shows a regenerative heat exchanger, top view; in fig. 2 - the same, frontal section.

The regenerative heat exchanger with an intermediate dispersion coolant contains the latest parallel-mounted ipylindrical heating and cooling chambers 1 and 2 installed with an inclination of 2–12 ° to the horizontal and filled with heating and heating nozzles and pipes 5 and 6 of their outlet. Chambers 1 and 2 are connected by transfer channels 7 and 8 for an intermediate heating medium with the formation of a circulation circuit A. Channels 7 and 8 can be made in the form of slots or nozzles. Inside each of the chambers 1 and 2, a cylindrical insert 9 is coaxially mounted with end faces, provided with hollow helical ribs 10 located on its lateral surface. Branch pipes 5 and 6 of the outlet are placed on the side of pipes 3 and 4 for supplying chambers 1 and 2 and are passed inside the inserts 9 through their plugged ends with the formation of annular channels 13 successively interconnected by pipes 11 and 12, filled with a liquid KIM intermediate heat carrier, which creates a circulation circuit B. In ka 1 and 2, they are perforated transversely 1 and 2 gratings 14 installed in the zone downcomers 7 and 8 and the particulate heat carrier is in the annular cavities 15 and 16 between the wall of the chambers 1 and 2 and the insert 9.

The heat exchanger works as follows

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The heating and heated media through the pipes 3 and 4 of the inlet flow into the circulation circuit A. The heating medium and the dispersed coolant are twisted in chamber 1 and move in the direction of the overflow channel 7. Due to the centrifugal effect of the heat transfer grain, the channel 7 is thrown into the cylindrical the chamber 2 with the heated medium and moves to the overflow channel 8 through which they are cast into the cylindrical

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chamber 1, where heats up the heating medium, and the process of circulation of the intermediate dispersion coolant through the circulation circuit A is repeated. As a result, heat from the heating medium is transferred heated. In addition, heat from the heating medium is transferred to the hollow ribs 10 located in the annular cavity 15 of the chamber 1 and through them into the channels 13, inside which there is a liquid intermediate heat carrier, which boils in the channel 13 of the chamber 1 and condenses in the channel 13 of the chamber 2, and through pipes 11 and 12 it is circulated around circuit B. Thus, liquid intermediate heat carrier circulates in circuit B, transferring heat from the heating medium to the heated medium.

The heating and heated media after interaction with the heating surfaces are removed through the branch pipes 5 and 6 of the outlet.

The oblique position of the cylindrical chambers 1 and 2 allows the condensate of the intermediate heat transfer fluid to be transported from the annular channel 13 of the chamber 2 with the heated medium to the annular channel 13 of the chamber 1 with the heating medium.

The use of the cyclone principle of operation of the regenerative heat exchanger makes it possible to effectively separate the heat exchanging media and the dispersed coolant, eliminate the flows of the heating and heated media and intensify the heat exchange, which increases the efficiency of the heat exchanger.

Claims (1)

Invention Formula Regenerative heat exchanger with an intermediate dispersed coolant containing cylindrical heating and cooling chambers filled with the latter and parallel placed, equipped with heat exchange and heat transfer pipes inlet and connected by heat transfer channels, with a cylindrical insert with greased ends inside each chamber, different that, in order to intensify heat exchange, it additionally contains perforated grids, the inserts are provided with zhen515150086 on their lateral surface of the floor are connected in series between helical ribs, branch pipes in each chamber are located on the side of the branch pipes for supplying these chambers and props; they are inside the inserts through their muffled ends to form circular channels filled with a liquid intermediate coolant and the said perforated grids are placed transversely in the chamber and installed in the zone of the overflow channels. circular channels filled with a liquid intermediate coolant, and the said perforated grids are placed transversely in the chamber and installed in the zone of the overflow channels. 73 sriе.2