CH175590A - Tubular heat exchange body. - Google Patents
Tubular heat exchange body.Info
- Publication number
- CH175590A CH175590A CH175590DA CH175590A CH 175590 A CH175590 A CH 175590A CH 175590D A CH175590D A CH 175590DA CH 175590 A CH175590 A CH 175590A
- Authority
- CH
- Switzerland
- Prior art keywords
- heat exchange
- ribs
- exchange body
- tubular heat
- body according
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
- F28F1/16—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means being integral with the element, e.g. formed by extrusion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Geometry (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Description
Rohrförmiger Wärmeaustauschkörper. Für den Wirkungsgrad einer dem Wärmeaustausch dienenden Leitung ist neben andern je nach den konkreten Verhält nissen mehr oder weniger entscheidenden Faktoren insbesondere die Grösse der wirksa men Oberfläche entscheidend. Man hat des halb insbesondere für Heizelemente soge nannte Rippenrohre eingeführt, bei welchen die Rohre in relativ kurzen Abständen mit radial verlaufenden Rippen versehen sind. Diese Rohre eignen sich indessen nicht für alle Verhältnisse, insbesondere dann nicht, wenn die Wärme von der Rohroberfläche in achsialer Richtung abgeführt werden soll.
Bei vertikal verlaufenden Heizrohren sind die Radialrippen deshalb ungeeignet, weil sie den natürlichen Auftrieb der erwärmten Luft behindern.
Gegenstand der Erfindung ist ein rohr- förmiger Wärmeaustauschkörper, welcher ge kennzeichnet ist durch Rippen, welche wenigstens annähernd in achsialer Richtung des Wärmeaustauschkörpers verlaufen.. Derartige rohrförmige Wärmeaustausch körper eignen sich in vielen Fällen, wo die Anwendung von Rippenrohren der üblichen Bauart, d. h. von Rohren mit Radialrippen, nicht angängig ist.
In der Zeichnung .sind einige Ausfüh rungsbeispiele von rohrförmigen Wärmeaus tauschkörpern gemäss Erfindung im Quer schnitt dargestellt. Fig. 1 stellt ein zylindri sches Rohr 1 mit achsial verlaufenden Rip pen 2 dar, F'ig. 2 ,ein Rohr mit flachem Quer schnitt; Fig. 3 und 4 zeigen Rohre mit run- .dem bezw. flachem Querschnitt,. bei welchem die Rippen achsial im Innern des Rohres verlaufen.
Für besondere Verhältnisse kann es sich empfehlen, ein Rohr zu verwenden, bei wel chem sowohl auf der Aussenseite, als im Innern Längsrippen vorgesehen sind. Der Wärme- bezw. Kälteübergang vom im Innern ,des Rohres strömenden Medium zur Rohr wandung wird dadurch entscheidend verbes sert.
Ein derartiges Rohr lässt sich in ein- facher Weise dadurch erstellen, dass in ein Rohr nach Fig. 1 ein seiner Bohrung entspre chendes nach Fig. 3 geschoben wird bezw. in ein Rohr nach Fig. 2 ein solches nach Fig. 4.
Unter Umständen- kann es sich ferner empfehlen, die Rippen nicht genau achsial, sondern mehr oder weniger schief zur Rohr achse, gegebenenfalls in Form eines steilen Gewindeganges verlaufen zu lassen, wodurch eine intensive Berührung der zwischen den Rippen durchstreichenden Medien mit der Oberfläche derselben bewirkt wird.
Tubular heat exchange body. For the efficiency of a line used for heat exchange, in addition to other factors that are more or less decisive depending on the specific conditions, the size of the effective surface is particularly decisive. One has introduced so-called finned tubes in particular for heating elements, in which the tubes are provided with radially extending ribs at relatively short intervals. However, these pipes are not suitable for all conditions, especially not when the heat is to be dissipated from the pipe surface in the axial direction.
In the case of vertical heating pipes, the radial ribs are unsuitable because they hinder the natural buoyancy of the heated air.
The invention relates to a tubular heat exchange body, which is characterized by ribs which run at least approximately in the axial direction of the heat exchange body. H. of pipes with radial ribs, is not acceptable.
In the drawing .sind some Ausfüh approximately examples of tubular heat exchanger bodies according to the invention shown in cross section. Fig. 1 shows a cylindri cal pipe 1 with axially extending Rip pen 2, F'ig. 2, a tube with a flat cross section; Fig. 3 and 4 show tubes with round .dem respectively. flat cross-section ,. in which the ribs run axially inside the tube.
For special circumstances, it may be advisable to use a tube in which longitudinal ribs are provided on both the outside and the inside. The heat or The cold transfer from the medium flowing inside the pipe to the pipe wall is significantly improved.
Such a tube can be created in a simple manner in that a corresponding hole in accordance with FIG. 3 is pushed into a tube according to FIG. in a tube according to FIG. 2 such a tube according to FIG. 4.
Under certain circumstances, it can also be advisable to let the ribs run not exactly axially, but more or less obliquely to the pipe axis, possibly in the form of a steep thread, which causes intensive contact of the media passing through between the ribs with the surface of the same .
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH175590T | 1934-07-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH175590A true CH175590A (en) | 1935-03-15 |
Family
ID=4426328
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH175590D CH175590A (en) | 1934-07-31 | 1934-07-31 | Tubular heat exchange body. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH175590A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7811053A (en) * | 1977-11-09 | 1979-05-11 | Interliz Anstalt | FLUE FOR A HEATING BOILER. |
EP0099875A2 (en) * | 1982-07-21 | 1984-02-01 | Alois Schwarz | Arrangement for heating central heating water and consumption water |
US4694898A (en) * | 1984-10-17 | 1987-09-22 | Norsk Hydro A.S. | Heat exchanger element comprising a single and integrally extruded member including at least two hollow tubes integrally joined by at least two webs |
-
1934
- 1934-07-31 CH CH175590D patent/CH175590A/en unknown
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7811053A (en) * | 1977-11-09 | 1979-05-11 | Interliz Anstalt | FLUE FOR A HEATING BOILER. |
EP0099875A2 (en) * | 1982-07-21 | 1984-02-01 | Alois Schwarz | Arrangement for heating central heating water and consumption water |
EP0099875A3 (en) * | 1982-07-21 | 1984-07-25 | Id-Energiesysteme Gesellschaft M.B.H. | Heat exchanger |
US4694898A (en) * | 1984-10-17 | 1987-09-22 | Norsk Hydro A.S. | Heat exchanger element comprising a single and integrally extruded member including at least two hollow tubes integrally joined by at least two webs |
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