EP0017202A2 - Echangeur de chaleur - Google Patents
Echangeur de chaleur Download PDFInfo
- Publication number
- EP0017202A2 EP0017202A2 EP80101693A EP80101693A EP0017202A2 EP 0017202 A2 EP0017202 A2 EP 0017202A2 EP 80101693 A EP80101693 A EP 80101693A EP 80101693 A EP80101693 A EP 80101693A EP 0017202 A2 EP0017202 A2 EP 0017202A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- heat exchanger
- exchanger according
- diameter
- inflow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
- F28D7/12—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically the surrounding tube being closed at one end, e.g. return type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
Definitions
- the invention relates to an arrangement for heat exchange with at least one tube provided with a number of annular ribs, with a guide body closely surrounding the ribs and an inflow nozzle and an outflow nozzle.
- Such an arrangement is known from FR-PS 20 58 516.
- the problem with such heat exchangers is to bring the gases or liquids to be cooled or heated into as good a contact as possible with the heat exchange surface.
- the width of the inlet opening and the outlet opening is the same. It is about twice the height of the fins of the finned tube.
- the outflow nozzle is designed there as a diffuser.
- the width of the inflow nozzle first decreases in the direction of the flow direction to a minimum value E and then increases again by a small amount.
- the proposed arrangement considerably improves the heat transfer values between the heat-carrying medium and the finned tubes.
- Another advantage of the proposed arrangement is the lower tendency to contamination, because the heat exchange tube is completely flowed around, so that, as in known arrangements, parts of the exchange surface are not in the "dead water" of the flow.
- the height r of the ribs of the tube is approximately 0.15 to 0.3 times the diameter of the tube. With these values, the rib efficiency is particularly favorable. It is also advantageous according to the invention that the diameter of the tube is at least 70 mm and the minimum thickness of a rib is 1.5 mm. With this: value-increasing pipe diameter increases the heat transfer.
- the guide bodies consist of two sheet metal bodies which are bent in a semicircular shape and are fastened in a housing.
- the guide bodies consist of sheet metal parts bent in a quarter circle, the inflow openings lying opposite one another and the inflow openings being spatially offset from one another by approximately 90 ° with respect to the outflow openings.
- the outflow opening of the outflow channel is formed from sheet metal parts running in parallel.
- a further tube is provided which is arranged concentrically to this and which is connected via a flange to a further flange arranged on the finned tube.
- This arrangement allows the inner tube to be easily removed, which allows convenient control of the inner exchange surface in heat exchangers which are subject to a safety check.
- the outer tube is conveniently closed at its end with a bottom.
- the ribbing and the outer tube only extend over part of its length.
- the cross-section of the non-finned part of the tube is expanded and a flange that can be connected to a housing and a pipe socket are arranged on this part.
- 5 denotes the finned tube, on which annular fins 3 are arranged. It is surrounded by two semicircular guide bodies, which are designed as S-flow guide plates 4 in FIG. 1, so that an annular gap 2 is formed between the guide plates 4 and the tube 5.
- the two flow guide plates 4 merge in the axial direction into an inflow nozzle 1, which runs parallel to the finned tube 5 and has an inflow opening 1. 1 and an outflow opening 1.2.
- the inflow nozzles 1 and the outflow channels each consist of sheets which are fastened to a housing 21.
- the width E of the inflow nozzle 1 first decreases in the direction of the flow direction to a minimum value E and then increases again by a small amount.
- the smallest width of the inlet opening 1.1 of the nozzle is smaller than the diameter of the tube 5. Very favorable heat transfer values can be achieved if the width of the inlet opening corresponds approximately to the difference between the sizes of the tube diameter d and the simple height r of a rib 3.
- the width A of the outflow opening 1.2 of the outflow channel is smaller than that of the inlet opening 1.1. Very favorable heat transfer values can be achieved with a width A of the outlet opening 1.2 if this corresponds approximately to twice the height r of a rib 3.
- the flow guide plates are each designed in a quarter circle and the two inflow openings lie opposite one another, while the two outflow openings are each offset by 90 ° with respect to the outflow openings.
- a second tube 6 is arranged concentrically to the finned tube and fixed in position by spacers 7.
- One end of the finned tube 5 is closed by a bottom 8.
- the ribbing of the outer tube 5 extends only over part of its length. It increases in diameter outside the ribbing and ends in a flange 14 which is connected to a flange 15 of the inner tube 6.
- a pipe socket 10 is arranged on the non-finned part of the pipe 5, through which one of the two gases or liquids can flow out.
- the finned tube 5 is provided in its wider section 3.1 with a further flange 16 which is connected to the flange 13 of a housing 21.
- a further flange 16 which is connected to the flange 13 of a housing 21.
- the gas or liquid flows into the housing from the left in the direction of the arrow in FIG. 1 and is passed through the displacer plates 1 into the annular gap 2 between the finned tube 5 of the flow guide plates 4.
- the gas or the liquid enters from two opposite points - and flows around the finned tube only by 90 ° in order to emerge again at the two outlet openings 1.2.
- This arrangement is particularly advantageous in the case of pulsating flows, since the flow against two sides of vibrations is prevented.
- the direction of flow of the second liquid or of the second gas is indicated by arrows.
- the gas enters the inner tube 6 from the right, reverses its direction at the bottom 8 of the finned tube 5 and flows back into the space between the finned tube 3 and the inner tube 6 and leaves the interior of the finned tube 3 through the pipe socket 10.
- the heat exchange tube can be conveniently pulled out of the housing 12 after loosening the housing flange connection 13.
- the expansion of the inner tube 6 is possible by loosening the flange connection 14, so that simple assembly and inexpensive maintenance and cleaning of the heat exchanger is possible.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT80101693T ATE933T1 (de) | 1979-03-31 | 1980-03-29 | Waermeaustauscher. |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2912998 | 1979-03-31 | ||
DE19792912998 DE2912998A1 (de) | 1979-03-31 | 1979-03-31 | Waermeaustauschrohr mit aeusseren stroemungsleitblechen |
DE3005958 | 1980-02-16 | ||
DE19803005958 DE3005958A1 (de) | 1980-02-16 | 1980-02-16 | Waermeaustauscher |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0017202A2 true EP0017202A2 (fr) | 1980-10-15 |
EP0017202A3 EP0017202A3 (en) | 1980-11-26 |
EP0017202B1 EP0017202B1 (fr) | 1982-04-28 |
Family
ID=25778514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP80101693A Expired EP0017202B1 (fr) | 1979-03-31 | 1980-03-29 | Echangeur de chaleur |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0017202B1 (fr) |
DE (1) | DE3060325D1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992014110A1 (fr) * | 1991-02-08 | 1992-08-20 | Withyman Brian Arthur Frederic | Conduits de transfert thermique destines surtout aux systemes de chauffage solaire, et perfectionnements apportes auxdits systemes |
CN110030849A (zh) * | 2019-04-17 | 2019-07-19 | 苏宇贵 | 壳管换热装置及其使用方法 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE138943C (fr) * | ||||
DE335361C (de) * | 1921-03-31 | Dipl Jng Heinrich Foege | Waermeaustauschvorrichtung fuer Roehrensysteme | |
GB500389A (en) * | 1937-11-16 | 1939-02-08 | British Leyland Motor Corp | Improvements in and relating to tubular heat exchangers for fluids |
FR841618A (fr) * | 1938-01-28 | 1939-05-24 | Procédé d'échange de calories, et dispositifs de construction | |
GB850532A (en) * | 1957-09-20 | 1960-10-05 | Carves Simon Ltd | Improvements in and relating to heat exchangers |
GB934631A (en) * | 1959-12-11 | 1963-08-21 | Andre Huet | Tubular heat exchanger |
US3160145A (en) * | 1962-07-20 | 1964-12-08 | Avy L Miller | Fluid heater |
DE1940963A1 (de) * | 1969-08-12 | 1971-02-25 | Maschf Augsburg Nuernberg Ag | Waermetauscher aus quer angestroemten Rippenrohren |
-
1980
- 1980-03-29 DE DE8080101693T patent/DE3060325D1/de not_active Expired
- 1980-03-29 EP EP80101693A patent/EP0017202B1/fr not_active Expired
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE138943C (fr) * | ||||
DE335361C (de) * | 1921-03-31 | Dipl Jng Heinrich Foege | Waermeaustauschvorrichtung fuer Roehrensysteme | |
GB500389A (en) * | 1937-11-16 | 1939-02-08 | British Leyland Motor Corp | Improvements in and relating to tubular heat exchangers for fluids |
FR841618A (fr) * | 1938-01-28 | 1939-05-24 | Procédé d'échange de calories, et dispositifs de construction | |
GB850532A (en) * | 1957-09-20 | 1960-10-05 | Carves Simon Ltd | Improvements in and relating to heat exchangers |
GB934631A (en) * | 1959-12-11 | 1963-08-21 | Andre Huet | Tubular heat exchanger |
US3160145A (en) * | 1962-07-20 | 1964-12-08 | Avy L Miller | Fluid heater |
DE1940963A1 (de) * | 1969-08-12 | 1971-02-25 | Maschf Augsburg Nuernberg Ag | Waermetauscher aus quer angestroemten Rippenrohren |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992014110A1 (fr) * | 1991-02-08 | 1992-08-20 | Withyman Brian Arthur Frederic | Conduits de transfert thermique destines surtout aux systemes de chauffage solaire, et perfectionnements apportes auxdits systemes |
CN110030849A (zh) * | 2019-04-17 | 2019-07-19 | 苏宇贵 | 壳管换热装置及其使用方法 |
Also Published As
Publication number | Publication date |
---|---|
EP0017202B1 (fr) | 1982-04-28 |
DE3060325D1 (en) | 1982-06-09 |
EP0017202A3 (en) | 1980-11-26 |
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