FR2654814A1 - Liquid-gas heat exchanger - Google Patents
Liquid-gas heat exchanger Download PDFInfo
- Publication number
- FR2654814A1 FR2654814A1 FR8915594A FR8915594A FR2654814A1 FR 2654814 A1 FR2654814 A1 FR 2654814A1 FR 8915594 A FR8915594 A FR 8915594A FR 8915594 A FR8915594 A FR 8915594A FR 2654814 A1 FR2654814 A1 FR 2654814A1
- Authority
- FR
- France
- Prior art keywords
- liquid
- heat exchanger
- gas
- gas heat
- exchanger according
- 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
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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
- F28D7/02—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 helically coiled
- F28D7/024—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 helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Description
La présente invention a pour objet un échangeur de chaleur liquide-gaz. The present invention relates to a liquid-gas heat exchanger.
Les échangeurs de chaleur liquide-gaz ont une efficacité limitée par la surface d'échange entre le gaz à réchauffer (ou refroidir) et le fluide calo ou frigo porteur. Liquid-gas heat exchangers have an efficiency limited by the exchange surface between the gas to be heated (or cooled) and the heat transfer fluid or refrigerating carrier.
L'augmentation de cette surface d'échange est généralement possible, mais au prix d'une augmentation de la taille de l'échangeur (donc de son prix), ainsi que de la perte de charge sur les deux fluides. The increase in this exchange surface is generally possible, but at the cost of an increase in the size of the exchanger (and therefore in its price), as well as the pressure drop on the two fluids.
La présente invention permet de réaliser l'équivalent d'un accroissement de la surface d'échange, tout en conservant, compte tenu de ses performances, une taille relativement petite à l'échangeur. The present invention makes it possible to produce the equivalent of an increase in the exchange surface, while retaining, taking into account its performance, a relatively small size at the exchanger.
Conformément à l'invention, ce résultat est obtenu avec un échangeur de chaleur liquide-gaz, caractérisé en ce que les gaz suivent une trajectoire cyclonique entre deux nappes externe et interne de fluide calo ou frigo porteur. According to the invention, this result is obtained with a liquid-gas heat exchanger, characterized in that the gases follow a cyclonic path between two external and internal layers of heat transfer fluid or refrigerating carrier.
Avantageusement, l'échangeur comportera entre les nappes externe et interne au moins une nappe intermédiaire enroulée à contre-courant dans l'espace entre lesdites nappes externe et interne. Advantageously, the exchanger will comprise between the external and internal plies at least one intermediate ply wound against the current in the space between said external and internal plies.
L'efficacité du transfert de chaleur entre le liquide circulant dans les nappes et le gaz en est fortement accru, et l'échangeur ainsi constitué est en fait équivalent à un échangeur plan de surface très supérieure à la seule surface métrique de contact de par le fait qui un élément de surface se trouve "léché" plusieurs fois par un même filet de gaz. The efficiency of the heat transfer between the liquid circulating in the sheets and the gas is greatly increased, and the exchanger thus formed is in fact equivalent to a planar exchanger with a surface much greater than the only metric contact surface due to the fact that a surface element is "licked" several times by the same thread of gas.
On comprendra mieux l'invention à l'aide de la description faite ci-après d'un mode de mise en oeuvre donné à titre d'exemple non limitatif, en référence à la figure unique annexée qui est une vue schématique en coupe d'un échangeur conforme à l'invention. The invention will be better understood using the description given below of an embodiment given by way of nonlimiting example, with reference to the single appended figure which is a schematic sectional view of an exchanger according to the invention.
L'invention consiste en un système de circulation des fluides se traduisant par une augmentation de la surface d'échange donc du même coup de l'efficacité de l'échangeur. Le gaz circule dans une enveloppe à entrée tangentielle t4) et sortie radiale t5), suivant une trajectoire cyclonique fortement turbulente. Le fluide calo frigo porteur circule quant à lui à contre-courant suivant plusieurs "nappes" : une nappe latérale extérieure t surface latérale externe), une nappe latérale intérieure t2) (surface latérale interne de l'enveloppe) (6) et une ou plusieurs nappes intermédiaires (3) enroulées à contre-courant dans l'espace annulaire (7) et servant en même temps de guide au gaz. The invention consists of a fluid circulation system resulting in an increase in the exchange surface therefore at the same time the efficiency of the exchanger. The gas circulates in an envelope with tangential inlet t4) and radial outlet t5), following a highly turbulent cyclonic path. The coolant carrier fluid circulates in countercurrent according to several "plies": an external lateral ply t external lateral surface), an internal lateral ply t2) (internal lateral surface of the envelope) (6) and one or several intermediate plies (3) wound against the current in the annular space (7) and at the same time serving as a gas guide.
Suivant l'invention, la trajectoire particulière du gaz dans l'enveloppe í6) entraine la génération d'une surface d'échange équivalente beaucoup plus grande que la seule surface de contact, la forte turbulence du gaz conduisant à un chevauchement partiel des filets de courant. According to the invention, the particular trajectory of the gas in the envelope í6) causes the generation of an equivalent exchange surface much larger than the single contact surface, the strong turbulence of the gas leading to a partial overlapping of the threads of current.
Les condensats peuvent être éliminés en partie basse t8). Condensate can be removed at the bottom t8).
L'échangeur gaz liquide décrit, peut fonctionner aussi bien pour le transfert de chaleur d'un fluide caloporteur (exemple vapeur) vers un gaz à réchauffer, que pour le transfert de froid d'un fluide frigorigène dont les nappes constituent l'évaporation vers un gaz à refroidir. The liquid gas exchanger described can function as well for the transfer of heat from a heat-transfer fluid (example steam) to a gas to be heated, as for the transfer of cold from a refrigerant, the layers of which constitute evaporation towards a gas to cool.
Il peut être utilisé dans une gamme considérable d'applications qui seront schématiquement classées et répertoriées ci-après, de manière non limitative. It can be used in a considerable range of applications which will be schematically classified and listed below, without limitation.
L'échangeur permet toutes combinaisons utilisant les nappes, soit comme condenseur, soit comme évaporateur d'une machine thermique. The exchanger allows all combinations using the layers, either as a condenser or as an evaporator of a thermal machine.
1. Système utilisant le froid directement - armoire de surgélation, congélation - tunnel de congélation - chambre froide (évite le givrage) - chariot pour crème glacée 2. Piégeage de vapeurs de cuisine - hottes (évite l'encrassement des cheminées ; plus besoin de filtres) - grill (adapté sur grill ou barbecue) - tout appareil de cuisson - conditionnement d'air 3. Déshydratation (avec ou sans réchauffage) - buanderie : sécheuse, repasseuse de linge, blanchisseuse industrielle - déshumidificateur - déshydrateur : déshydratation de surface (imprimerie, tolerie...) - épurateur d'air - lyophilisation 4.Piégeage de solvants (avec recyclage souvent possible) - machine d'imprimerie - révélateur - laboratoires - toute industrie chimique
De manière plus générale, les domaines et applications de l'invention sont très vastes, et concernent en particulier tous les cas où un transfert de calories ou frigories doit être opéré sur un gaz dans un espace limité donc avec une forte concentration de puissance et/ou des débits élevés, par exemple - en climatisation chaude ou froide - en maîtrise de la composition d'un gaz lorsque un ou plusieurs constituants de la phase gazeuse peut faire l'objet dans le domaine de température d'un changement d'état comme par exemple ; sublimation, condensation, vaporisation - en contrôle de l'humidité relative de l'air, par exemple en climatisation, en épuration des rejets en cheminée ou hotte, ou atmosphère...1. System using cold directly - freezing cabinet, freezing - freezing tunnel - cold room (avoids icing) - ice cream cart 2. Trapping of kitchen vapors - hoods (avoids clogging of chimneys; no more need for filters) - grill (suitable for grill or barbecue) - any cooking appliance - air conditioning 3. Dehydration (with or without reheating) - laundry room: dryer, ironer, industrial laundress - dehumidifier - dehydrator: surface dehydration ( printing works, sheet metal works, etc.) - air purifier - freeze-drying 4. Solvent trapping (with recycling often possible) - printing machine - developer - laboratories - any chemical industry
More generally, the fields and applications of the invention are very wide, and relate in particular to all cases where a transfer of calories or frigories must be carried out on a gas in a limited space therefore with a high concentration of power and / or high flow rates, for example - in hot or cold air conditioning - in controlling the composition of a gas when one or more constituents of the gas phase may be subject to a change of state in the temperature range such as for example ; sublimation, condensation, vaporization - in control of the relative humidity of the air, for example in air conditioning, in purification of the discharges in chimney or hood, or atmosphere ...
- surgélation - en particulier l'invention permet de réaliser un séchage à froid ou à température ambiante en ne jouant que sur l'humidité relative de l'air de process. Les applications de l'invention sont donc nombreuses dans tous les cas où une élévation de température de l'air de séchage est préjudiciable à la qualité finale du produit, comme pour certaines denrées alimentaires fragiles, par exemple - le contrôle et l'épuration des effluents de cuisson en cuisine et grande cuisine par le piégeage par condensation de la vapeur d'eau et des produits dégradés volatils entrainés : hotte, cheminées, appareils de cuisson autonomes - en épuration de gaz effluents chargés en vapeurs toxiques ou nocives condensables comme par exemple la mise au norme antipollution du gaz rejetés en atmosphère - en abaissement immédiat des températures d'effluent gazeux fortement explosif - en déshydratation immédiate de surface (exemple : attaque de solvant sur polymères d'imprimerie ou autre). - deep-freezing - in particular the invention makes it possible to carry out drying at cold or at room temperature by acting only on the relative humidity of the process air. The applications of the invention are therefore numerous in all cases where a rise in temperature of the drying air is detrimental to the final quality of the product, as for certain fragile foodstuffs, for example - the control and purification of cooking effluents in kitchens and large kitchens by trapping by condensation of water vapor and volatile degraded products entrained: hood, fireplaces, autonomous cooking appliances - in purification of effluent gases loaded with condensable toxic or harmful vapors such as for example upgrading to the anti-pollution standard of gases discharged into the atmosphere - immediately lowering the temperatures of highly explosive gaseous effluents - immediately dehydrating the surface (example: solvent attack on printing polymers or other).
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8915594A FR2654814B1 (en) | 1989-11-23 | 1989-11-23 | LIQUID-GAS HEAT EXCHANGER. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8915594A FR2654814B1 (en) | 1989-11-23 | 1989-11-23 | LIQUID-GAS HEAT EXCHANGER. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2654814A1 true FR2654814A1 (en) | 1991-05-24 |
| FR2654814B1 FR2654814B1 (en) | 1995-02-24 |
Family
ID=9387830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8915594A Expired - Lifetime FR2654814B1 (en) | 1989-11-23 | 1989-11-23 | LIQUID-GAS HEAT EXCHANGER. |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2654814B1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0687006A1 (en) * | 1994-06-08 | 1995-12-13 | Alusuisse-Lonza Services AG | Cooler |
| EP2636979A1 (en) * | 2012-03-06 | 2013-09-11 | Air Processing Components | Enhanced cyclone-type air/liquid exchanger |
| FR2994101A1 (en) * | 2012-08-06 | 2014-02-07 | Air Proc Components | Treating warm humid air discharged from grain dryer during process of drying e.g. corn grains, comprises transferring heat to hot air of coolant to condense moisture and/or volatile components, and collecting condensate and particles |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR877844A (en) * | 1940-03-09 | 1943-01-04 | Oerlikon Maschf | heat exchanger |
| DE930147C (en) * | 1950-10-27 | 1955-07-11 | Waagner Biro Ag | Tube heat exchanger |
| FR1251229A (en) * | 1957-10-19 | 1961-01-20 | Method of fitting out a heat exchanger with bundles of heating tubes or rods and exchanger comprising application | |
| DE1196219B (en) * | 1956-10-19 | 1965-07-08 | Hoechst Ag | Separator designed as a heat exchanger |
| FR2263485A1 (en) * | 1974-03-06 | 1975-10-03 | Bayer Ag | |
| FR2307237A1 (en) * | 1975-04-10 | 1976-11-05 | Conditionair | Heat exchanger for cooling gases - with means of absorbing and returning excess cold, preventing cooling surfaces frosting |
| FR2527478A1 (en) * | 1982-05-26 | 1983-12-02 | Creusot Loire | Cyclone separator - comprising gas-tight vertical cylindrical chamber into which gas enters tangentially at top |
| EP0145808A1 (en) * | 1983-12-19 | 1985-06-26 | Tüzeléstechnikai Kutato- és Fejlesztö Vallalat | Dust separator with a recuperator, particularly a cyclone |
-
1989
- 1989-11-23 FR FR8915594A patent/FR2654814B1/en not_active Expired - Lifetime
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR877844A (en) * | 1940-03-09 | 1943-01-04 | Oerlikon Maschf | heat exchanger |
| DE930147C (en) * | 1950-10-27 | 1955-07-11 | Waagner Biro Ag | Tube heat exchanger |
| DE1196219B (en) * | 1956-10-19 | 1965-07-08 | Hoechst Ag | Separator designed as a heat exchanger |
| FR1251229A (en) * | 1957-10-19 | 1961-01-20 | Method of fitting out a heat exchanger with bundles of heating tubes or rods and exchanger comprising application | |
| FR2263485A1 (en) * | 1974-03-06 | 1975-10-03 | Bayer Ag | |
| FR2307237A1 (en) * | 1975-04-10 | 1976-11-05 | Conditionair | Heat exchanger for cooling gases - with means of absorbing and returning excess cold, preventing cooling surfaces frosting |
| FR2527478A1 (en) * | 1982-05-26 | 1983-12-02 | Creusot Loire | Cyclone separator - comprising gas-tight vertical cylindrical chamber into which gas enters tangentially at top |
| EP0145808A1 (en) * | 1983-12-19 | 1985-06-26 | Tüzeléstechnikai Kutato- és Fejlesztö Vallalat | Dust separator with a recuperator, particularly a cyclone |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0687006A1 (en) * | 1994-06-08 | 1995-12-13 | Alusuisse-Lonza Services AG | Cooler |
| EP2636979A1 (en) * | 2012-03-06 | 2013-09-11 | Air Processing Components | Enhanced cyclone-type air/liquid exchanger |
| FR2987890A1 (en) * | 2012-03-06 | 2013-09-13 | Air Proc Components | AIR / LIQUID EXCHANGER OF THE PERFECTED CYCLONIC TYPE |
| FR2994101A1 (en) * | 2012-08-06 | 2014-02-07 | Air Proc Components | Treating warm humid air discharged from grain dryer during process of drying e.g. corn grains, comprises transferring heat to hot air of coolant to condense moisture and/or volatile components, and collecting condensate and particles |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2654814B1 (en) | 1995-02-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CA | Change of address | ||
| CD | Change of name or company name |