DE858100C - Heat exchanger for absorption refrigeration machines - Google Patents
Heat exchanger for absorption refrigeration machinesInfo
- Publication number
- DE858100C DE858100C DEJ2285D DEJ0002285D DE858100C DE 858100 C DE858100 C DE 858100C DE J2285 D DEJ2285 D DE J2285D DE J0002285 D DEJ0002285 D DE J0002285D DE 858100 C DE858100 C DE 858100C
- Authority
- DE
- Germany
- Prior art keywords
- heat exchanger
- absorption refrigeration
- heat exchange
- tube
- refrigeration machines
- 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.)
- Expired
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
- 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
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)
- Sorption Type Refrigeration Machines (AREA)
Description
Bei Wärmeaustauschverrichtungen in Absorptionskältemaschinen ist es von großer Bedeutung, claß die durch die Wärmeaustauschvorrichtungen geführten Medien, z. B. das Absorptionsmittel im Absorber oder das Kältemittel im Verdampfer einerseits und das indifferente Hilfsgas andererseits, möglichst weitgehend miteinander in Berührung gebracht werden. Man hat bereits erkannt, daß es für einen guten Stoffübergang zwischen den durch den Absorber und Verdampfer strömenden Medien vorteilhaft ist, die durchströmende Flüssigkeit in möglichst dünner Schicht mit großer Oberfläche auszubreiten. Deshalb ist es üblich, im Absorber und Verdampfer flache Teller vorzusehen, über welche die Flüssigkeit herabrieselt und in welchen sie in dünner Schicht steht. Die Erfindung will die Vorteile der dünnen Schicht bei rohrförmigen Absorbern und Verdampfern erreichen. Sie besteht darin, daß das Rohr oder die Rohre unten abgeflacht sind.In the case of heat exchange devices in absorption chillers, it is of great importance, the media passed through the heat exchange devices, z. B. the absorbent in the absorber or the refrigerant in the evaporator on the one hand and the indifferent auxiliary gas on the other hand, as far as possible in with one another Be brought into contact. It has already been recognized that it is essential for good mass transfer between the media flowing through the absorber and evaporator is advantageous, the flowing liquid in as thin a layer as possible with a large surface spread out. It is therefore common practice to use flat plates in the absorber and evaporator, over which the liquid trickles down and in which it stands in a thin layer. The invention seeks to take advantage of the thin layer in tubular absorbers and Reach vaporizers. It consists in the tube or tubes being flattened at the bottom are.
Bei dieser Anordnung kann die Flüssigkeitsschicht des in dem Rohr fließenden Mediums sehr niedrig gehalten werden, so daß kein wesentlicher M'ärmeübergangswiderstand innerhalb der Flüssigkeitsschicht auftritt und die ganze Projektionsfläche des Rohres als Absorptions-, bzw. Verdampfungsfläche wirksam wird. Hierdurch wird zunächst erreicht, daß ein guter Wärmeaustausch zwischen der in flacher, dünner Schicht strömenden Flüssigkeit und der das Rohr umgebenden Außenluft stattfindet. Gleichzeitig wird aber auch ein guter Stoffübergang zwischen der Flüssigkeit und dem Gas, die durch das Rohr strömen, ermöglicht, weil diese sich mit einer großen Oberfläche berühren.With this arrangement, the liquid layer in the pipe flowing medium are kept very low, so that no significant heat transition resistance occurs within the liquid layer and the entire projected area of the pipe acts as an absorption or evaporation surface. This will initially achieves that a good heat exchange between the flowing in a flat, thin layer Liquid and the outside air surrounding the pipe takes place. At the same time will but also a good mass transfer between the liquid and the gas passing through flow through the pipe, because they touch a large surface.
In Fig. i ist ein solches Wärmeaustauschrohr im Querschnitt dargestellt. Von besonderer Bedeutung ist hier, wie bereits oben erwähnt, daß durch diese Form eine sehr große Absorptions- bzw. Verdampfungsfläche erreicht wird.Such a heat exchange tube is shown in cross section in FIG. Of particular importance here, as already mentioned above, is that this shape a very large absorption or evaporation surface is achieved.
In Fig.2 ist der Längsquerschnitt des Wärmeaustauschrohres dargestellt. Hier wird gezeigt, daß das Rohr zur Fortbewegung der im Innen des Wärmeaustauschers befindlichen Flüssigkeit schwach geneigt ist. Durch die Höhe der Neigung kann die Strömungsgeschwindigkeit sowie die Flüssigkeitsschichthöhe beeinflußt werden.In Figure 2, the longitudinal cross-section of the heat exchange tube is shown. Here it is shown that the tube is used to locate the inside of the heat exchanger liquid is slightly inclined. Due to the height of the incline, the Flow velocity and the height of the liquid layer can be influenced.
In Fig.3 ist ein Ausführungsbeispiel dargestellt, wobei zur Verbesserung des Wärmeüberganges das Rohr in üblicher `''eise mit Rippen versehen ist.In Figure 3, an embodiment is shown, wherein for improvement of the heat transfer, the pipe is provided with ribs in the usual `` '' iron.
Gemäß Fig. 4 und 5 kann zur weiteren Verbesserung des Wärmeüberganges durch eine gewisse Turbulenz der Strömung und zur weiteren Vergrößerung der Absorptions- bzw. Verdampfungsflächen ein Drahtnetz oder ein ähnlich geformter Verteilungskörper auf dem abgeflachten Teil des Wärmeaustauschers vorgesehen werden.According to FIGS. 4 and 5, the heat transfer can be further improved due to a certain turbulence in the flow and to further increase the absorption or evaporation surfaces, a wire mesh or a similarly shaped distribution body be provided on the flattened part of the heat exchanger.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEJ2285D DE858100C (en) | 1938-12-22 | 1938-12-22 | Heat exchanger for absorption refrigeration machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEJ2285D DE858100C (en) | 1938-12-22 | 1938-12-22 | Heat exchanger for absorption refrigeration machines |
Publications (1)
Publication Number | Publication Date |
---|---|
DE858100C true DE858100C (en) | 1952-12-04 |
Family
ID=7197837
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEJ2285D Expired DE858100C (en) | 1938-12-22 | 1938-12-22 | Heat exchanger for absorption refrigeration machines |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE858100C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE948162C (en) * | 1953-04-29 | 1956-08-30 | Oscar Doebeli | Absorber for absorption refrigeration machines |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE39016C (en) * | ad. altmann & CO. in Berlin, Ackerstr. 68 | Surface condenser | ||
US1475327A (en) * | 1922-06-22 | 1923-11-27 | Stephen L Tyler | Absorption and condensing apparatus |
DE543126C (en) * | 1930-10-26 | 1932-02-01 | Platen Munters Refrigerating S | Process for separating the solvent by rectification of steam formed by heating in absorption cooling apparatus |
FR754784A (en) * | 1932-07-01 | 1933-11-14 | Fedders Mfg Co Inc | Improvements to refrigeration devices |
US1962512A (en) * | 1929-05-22 | 1934-06-12 | Electrolux Servel Corp | Evaporator |
US2116998A (en) * | 1935-06-24 | 1938-05-10 | Servel Inc | Refrigeration |
DE661752C (en) * | 1936-09-04 | 1938-06-25 | Elektrolux Akt Ges | Absorber and evaporator for absorption chillers |
-
1938
- 1938-12-22 DE DEJ2285D patent/DE858100C/en not_active Expired
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE39016C (en) * | ad. altmann & CO. in Berlin, Ackerstr. 68 | Surface condenser | ||
US1475327A (en) * | 1922-06-22 | 1923-11-27 | Stephen L Tyler | Absorption and condensing apparatus |
US1962512A (en) * | 1929-05-22 | 1934-06-12 | Electrolux Servel Corp | Evaporator |
DE543126C (en) * | 1930-10-26 | 1932-02-01 | Platen Munters Refrigerating S | Process for separating the solvent by rectification of steam formed by heating in absorption cooling apparatus |
FR754784A (en) * | 1932-07-01 | 1933-11-14 | Fedders Mfg Co Inc | Improvements to refrigeration devices |
US2116998A (en) * | 1935-06-24 | 1938-05-10 | Servel Inc | Refrigeration |
DE661752C (en) * | 1936-09-04 | 1938-06-25 | Elektrolux Akt Ges | Absorber and evaporator for absorption chillers |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE948162C (en) * | 1953-04-29 | 1956-08-30 | Oscar Doebeli | Absorber for absorption refrigeration machines |
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