CA2089584C - Echangeur de chaleur - Google Patents
Echangeur de chaleur Download PDFInfo
- Publication number
- CA2089584C CA2089584C CA002089584A CA2089584A CA2089584C CA 2089584 C CA2089584 C CA 2089584C CA 002089584 A CA002089584 A CA 002089584A CA 2089584 A CA2089584 A CA 2089584A CA 2089584 C CA2089584 C CA 2089584C
- Authority
- CA
- Canada
- Prior art keywords
- coiled tube
- separator
- sleeve
- annular space
- secondary fluid
- 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 - Fee Related
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
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/086—Heat exchange elements made from metals or metal alloys from titanium or titanium alloys
-
- 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
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
- F28F21/067—Details
Abstract
It is used to reheat a secondary fluid such as pool water or sea water.
It comprises a body provided with an inlet for the secondary fluid to be reheated and an outlet for the reheated fluid, a sleeve inside the body, a coil in which the primary fluid circulates and which is housed inside the annular space between the body and the sleeve and outside of which the water to be reheated passes. The body (1) and the sleeve (8) are made of a plastic-based material, either reinforced or not, and the coil (10) is made of titanium.
It comprises a body provided with an inlet for the secondary fluid to be reheated and an outlet for the reheated fluid, a sleeve inside the body, a coil in which the primary fluid circulates and which is housed inside the annular space between the body and the sleeve and outside of which the water to be reheated passes. The body (1) and the sleeve (8) are made of a plastic-based material, either reinforced or not, and the coil (10) is made of titanium.
Description
2 0 8 9 5 84 The present invention concerns a tubular heat exchanger passed through by a primary fluid used to reheat a secondary fluid such as pool water or sea water.
Heat exchangers of this type are already known and, in this connection, reference is made to e.g. FR-A-2 441 819, FR-A-2 482 717, DE-A-3 038 344 and US-A-4 739 634. The exchangers described in these documents are formed by a cylindrical body provided with an inlet and an outlet for the secondary fluid. Inside the body, a helical coil is provided which is passed through by a priniary fluid intended to transfer its calories to the secondary fluid circulating in the body.
Generally, in order to increase the efficiency of the heat transfer, the secondary fluid is circulated as much in contact as possible with the coil. To accomplish this, the latter is housed in the annular space formed between the inside wall of the body and the outside wall of an annular sleeve. Thus, the secondary fluid circulates helically between two coil turns.
This, then, creates corrosion problems which, in the majority of applications, are solved, as in the patents DE-A-3 038 344 and US-A-4 739 634, by using separators between the outside body and the sleeve.
Nevertheless, taking into account the particular use for which the exchangers of the invention are intended, namely reheating pool water and sea water, this measure is not adequate. In fact, pool water contains an oxidizing agent, for example chlorine, and is therefore corrosive.
It is, therefore, the object of the invention to provide a heat exchanger designed especially for reheating a corrosive secondary fluid, ~~
such as pool water or sea water.
It was found that satisfactory results were obtained by making the outside body from a plastic-based material and the coil tube of titanium and by furnishing the coil with separators between the outside wall of the sleeve and the inside wall of the body.
A heat exchanger according to the invention is shown in Fig. 1 in a longitudinal section.
It comprises an external body 1 having a hollow cylindrical shape and closed airtight on the upper end by a cover 2 and, on its lower end, by a base 3. The base 3 is provided with means, such as holes 4 for the passage of screws 5, which allow the exchanger to be fixed to the ground.
At the lower end, in the cylindrical wall of the body 1, a pipe connection 6 is provided which forms the inlet for the secondary fluid by which the water to be reheated is introduced, for example, the water coming from a pool. At the upper end, on the same generator as pipe connection 6, a pipe connection 7 is provided which forms the outlet by which the reheated water in the exchanger returns to the pool.
The inside diameter of the pipe connections 6 and 7 is dimensioned such that the exchanger can be connected to a circuit in which the secondary fluid can circulate, without loss of excessive voltage, with a relatively significant output, that is between 5 and 20 m3/hour, by means of a pump. These diameters are, for example, in the order of 40 mm.
The fact that the exchanger can be operated at relatively high rates '~,.
Heat exchangers of this type are already known and, in this connection, reference is made to e.g. FR-A-2 441 819, FR-A-2 482 717, DE-A-3 038 344 and US-A-4 739 634. The exchangers described in these documents are formed by a cylindrical body provided with an inlet and an outlet for the secondary fluid. Inside the body, a helical coil is provided which is passed through by a priniary fluid intended to transfer its calories to the secondary fluid circulating in the body.
Generally, in order to increase the efficiency of the heat transfer, the secondary fluid is circulated as much in contact as possible with the coil. To accomplish this, the latter is housed in the annular space formed between the inside wall of the body and the outside wall of an annular sleeve. Thus, the secondary fluid circulates helically between two coil turns.
This, then, creates corrosion problems which, in the majority of applications, are solved, as in the patents DE-A-3 038 344 and US-A-4 739 634, by using separators between the outside body and the sleeve.
Nevertheless, taking into account the particular use for which the exchangers of the invention are intended, namely reheating pool water and sea water, this measure is not adequate. In fact, pool water contains an oxidizing agent, for example chlorine, and is therefore corrosive.
It is, therefore, the object of the invention to provide a heat exchanger designed especially for reheating a corrosive secondary fluid, ~~
such as pool water or sea water.
It was found that satisfactory results were obtained by making the outside body from a plastic-based material and the coil tube of titanium and by furnishing the coil with separators between the outside wall of the sleeve and the inside wall of the body.
A heat exchanger according to the invention is shown in Fig. 1 in a longitudinal section.
It comprises an external body 1 having a hollow cylindrical shape and closed airtight on the upper end by a cover 2 and, on its lower end, by a base 3. The base 3 is provided with means, such as holes 4 for the passage of screws 5, which allow the exchanger to be fixed to the ground.
At the lower end, in the cylindrical wall of the body 1, a pipe connection 6 is provided which forms the inlet for the secondary fluid by which the water to be reheated is introduced, for example, the water coming from a pool. At the upper end, on the same generator as pipe connection 6, a pipe connection 7 is provided which forms the outlet by which the reheated water in the exchanger returns to the pool.
The inside diameter of the pipe connections 6 and 7 is dimensioned such that the exchanger can be connected to a circuit in which the secondary fluid can circulate, without loss of excessive voltage, with a relatively significant output, that is between 5 and 20 m3/hour, by means of a pump. These diameters are, for example, in the order of 40 mm.
The fact that the exchanger can be operated at relatively high rates '~,.
-3-prevents the forniation of deposits coming from the pool water and from its filtration system.
Inside the body 1, a sleeve 8, formed by a cylindrical tube furnished with an internal radial partition 9, is provided coaxially.
In the annular space between the inside wall of the body 1 and the outside wall of the sleeve 8, a coil 10 formed by a helical tube is mounted. At its upper end, the coil 10 ends in an elbow 11 extending, tightly sealed, through the cover 2 and has an inlet 12 by which the primary fluid is introduced. At the other end, the coil 10 forms an elbow 13 extended by a rectangular part 14 which also passes, tightly sealed, through the cover 2, running into an outlet 15 which is in the vicinity of input 12 and by which the primary fluid leaves after having transferred its calories. The rectangular part 14 also passes through the inside partition 9 of the sleeve 8.
Sleeve 8 is fixed to the coil 10 by appropriate means (not shown).
At the lower erid of the body 1, a teniperature pick-up 16 is mounted whose output signal can be used to control the circulation of the primary and secondary fluids in the exchanger.
According to the invention, the body 1 and the sleeve 8 are made from a plastic-based material, either reinforced or not, such as PVC or, advantageously, polyester reinforced with glass fibers. The coil 10 is made of titanium.
On t[ie one hand, separators 17a are provided between the inside wall of the body 1 and the coil 10, said separators being in the form of a vertical band smaller in width in relation to the diameter of the body 1 ~~
_4_ 2089584 , and provided with housings for each of the turns of the coil 10 and, on the other hand, separators l7b are provided between the outside wall of the sleeve 8 and the coil 10, these separators being in the form of a band which is also smaller in width in relation to the diameter of the sleeve 8. The separators 17a and 17b keep the coil 10 at a distance of about 2 mm, both from the body 1 and from the sleeve 8.
The function of the separators 17a and 17b is multiple. It facilitates mounting of the coil 10 which appears, once the separators 17a are in position, in the form of a single rigid part. It also avoids relative movements between, on the one hand, body 1 and sleeve 8 and, on the other hand, coil 10, such niovements being produced by vibrations of pumps and accessories about the exchanger and which can lead to friction which deteriorates the elements of the exchanger.
It is also used to solve the problems associated with corrosion in two ways. On the one hand, separators 17a and 17b create areas situated between sleeve 8 and coil 10 and between body 1 and coil 10 which are, from the point of view of corrosion, dead. On the other hand, by dividing the flowing spaces of the secondary fluid about coil 10, they facilitate its flow and allow its circulation at higher rates.
In conclusion, it will be noted that the fact that the separators l7a have housings for each turn of the coil 10 allows release of the coil diarneter gaps of each turn, these gaps being compensated by the differences in thickness which hold, when the exchanger is assembled, the separators 17a between their outer side and their housing.
The water to be reheated flows helically upward in the body 1(arrows A), on the one hand, between two consecutive turns of the coil 10 and, on the other hand, between coil 10 and body 1 or sleeve 8. In _ 5 _ contrast thereto, the primary fluid flows downward (arrows B) in coil 10, that is, countercurrently to the water of the secondary fluid.
The primary fluid is, for example, a refrigerating agent coming from a heat pump (not shown), but could also be water vapor or hot water.
r'a~
Inside the body 1, a sleeve 8, formed by a cylindrical tube furnished with an internal radial partition 9, is provided coaxially.
In the annular space between the inside wall of the body 1 and the outside wall of the sleeve 8, a coil 10 formed by a helical tube is mounted. At its upper end, the coil 10 ends in an elbow 11 extending, tightly sealed, through the cover 2 and has an inlet 12 by which the primary fluid is introduced. At the other end, the coil 10 forms an elbow 13 extended by a rectangular part 14 which also passes, tightly sealed, through the cover 2, running into an outlet 15 which is in the vicinity of input 12 and by which the primary fluid leaves after having transferred its calories. The rectangular part 14 also passes through the inside partition 9 of the sleeve 8.
Sleeve 8 is fixed to the coil 10 by appropriate means (not shown).
At the lower erid of the body 1, a teniperature pick-up 16 is mounted whose output signal can be used to control the circulation of the primary and secondary fluids in the exchanger.
According to the invention, the body 1 and the sleeve 8 are made from a plastic-based material, either reinforced or not, such as PVC or, advantageously, polyester reinforced with glass fibers. The coil 10 is made of titanium.
On t[ie one hand, separators 17a are provided between the inside wall of the body 1 and the coil 10, said separators being in the form of a vertical band smaller in width in relation to the diameter of the body 1 ~~
_4_ 2089584 , and provided with housings for each of the turns of the coil 10 and, on the other hand, separators l7b are provided between the outside wall of the sleeve 8 and the coil 10, these separators being in the form of a band which is also smaller in width in relation to the diameter of the sleeve 8. The separators 17a and 17b keep the coil 10 at a distance of about 2 mm, both from the body 1 and from the sleeve 8.
The function of the separators 17a and 17b is multiple. It facilitates mounting of the coil 10 which appears, once the separators 17a are in position, in the form of a single rigid part. It also avoids relative movements between, on the one hand, body 1 and sleeve 8 and, on the other hand, coil 10, such niovements being produced by vibrations of pumps and accessories about the exchanger and which can lead to friction which deteriorates the elements of the exchanger.
It is also used to solve the problems associated with corrosion in two ways. On the one hand, separators 17a and 17b create areas situated between sleeve 8 and coil 10 and between body 1 and coil 10 which are, from the point of view of corrosion, dead. On the other hand, by dividing the flowing spaces of the secondary fluid about coil 10, they facilitate its flow and allow its circulation at higher rates.
In conclusion, it will be noted that the fact that the separators l7a have housings for each turn of the coil 10 allows release of the coil diarneter gaps of each turn, these gaps being compensated by the differences in thickness which hold, when the exchanger is assembled, the separators 17a between their outer side and their housing.
The water to be reheated flows helically upward in the body 1(arrows A), on the one hand, between two consecutive turns of the coil 10 and, on the other hand, between coil 10 and body 1 or sleeve 8. In _ 5 _ contrast thereto, the primary fluid flows downward (arrows B) in coil 10, that is, countercurrently to the water of the secondary fluid.
The primary fluid is, for example, a refrigerating agent coming from a heat pump (not shown), but could also be water vapor or hot water.
r'a~
Claims (3)
1. A heat exchanger for reheating a secondary fluid such as a pool of fresh or sea water, said exchanger comprising a hollow cylindrical body having an inlet for receiving said secondary fluid to be reheated and an outlet for discharging said reheated fluid, a sleeve co-axially located inside the body and spaced from an inside wall of said body and forming an annular space therebetween, a coiled tube in which the primary fluid circulates and which is located inside and co-axially with said annular space, an intake and an output for said coiled tube, one end of said coiled tube being coupled directly to one of said intake and said output, an opposite end of said coiled tube being coupled to the other of said intake and said output via a pipe extending through a center of said coiled tube, the secondary fluid passing through said annular space and over said coiled tube, the body and the sleeve being made of a reinforced polyester plastic-based material, the coiled tube being made of titanium, a first separator between the inside wall of the body and the coiled tube, said first separator being a strip provided with a series of housings for individually receiving and supporting each turn of the coiled tube, and a second separator between the outside wall of the sleeve and the coiled tube, said second separator being a strip pushing said individual turns against said supporting shapes in said first separator.
2. A heat exchanger for reheating a secondary fluid such as a pool of fresh or sea water, said exchanger comprising a hollow cylindrical body having an inlet for receiving said secondary fluid to be reheated and an outlet for discharging said reheated fluid, a sleeve co-axially located inside the body and spaced from said body and forming an annular space therebetween, the body and the sleeve being made of a reinforced polyester plastic-based material, a coiled tube in which the primary fluid circulates and which is located inside said annular space, the secondary fluid passing through said annular space and over said coiled tube, the coiled tube being made of titanium, a first separator between an inside wall of the body and the coiled tube, said first separator being an undulating strip provided with a series of housing for individually receiving and supporting each turn of the boiled tube, and a second separator between the outside wall of the sleeve and the coiled tube, said second separator being a strip which is smooth on opposite sides for pushing said individual turns against said supporting shapes in said first spacer whereby said coil is installed and locked in space by the sliding of said second separator into an area between said outside wall of the sleeve and said coiled tube for locking said individual turns in said housings.
3. A heat exchanger for reheating a secondary fluid such as a pool of fresh or sea water, said exchanger comprising a hollow cylindrical body having an inlet for receiving said secondary fluid to be reheated and an outlet in one end of said body for discharging said reheated fluid, a sleeve co-axially located inside the body and spaced from said body and forming an annular space therebetween, the body and the sleeve being made of a reinforced polyester plastic-based material, a coiled tube in which the primary fluid circulates and which is located inside and co-axially with said annular space, the coiled tube being made of titanium, one end of said coiled tube being coupled directly to one of an intake and an output, an opposite end of said coiled tube being coupled to the other of said intake and said output via a pipe extending through a center of said coiled tube, the secondary fluid passing through said annular space, and over said coiled tube, a first separator between an inside wall of the body and the coiled tube, said first separator being an undulating strip having a series of housings for individually receiving and supporting each turn of the coiled tube, and a second separator between an outside wall of the sleeve and the coiled tube, said second separator being a strip which is smooth on opposite sides for pushing said individual turns of the coiled tube against said supporting shapes in said first separator and for locking said individual turns in said housings.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9200571A FR2686408B1 (en) | 1992-01-16 | 1992-01-16 | HEAT EXCHANGER USED FOR HEATING A SECONDARY FLUID SUCH AS POOL WATER OR SEA WATER. |
| DE69300038T DE69300038T2 (en) | 1992-01-16 | 1993-01-13 | Heat exchanger. |
| EP93460002A EP0552122B1 (en) | 1992-01-16 | 1993-01-13 | Heat-exchanger |
| ES93460002T ES2068043T3 (en) | 1992-01-16 | 1993-01-13 | HEAT CHANGER. |
| CA002089584A CA2089584C (en) | 1992-01-16 | 1993-02-16 | Echangeur de chaleur |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9200571A FR2686408B1 (en) | 1992-01-16 | 1992-01-16 | HEAT EXCHANGER USED FOR HEATING A SECONDARY FLUID SUCH AS POOL WATER OR SEA WATER. |
| CA002089584A CA2089584C (en) | 1992-01-16 | 1993-02-16 | Echangeur de chaleur |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2089584A1 CA2089584A1 (en) | 1994-08-17 |
| CA2089584C true CA2089584C (en) | 2000-01-11 |
Family
ID=25675902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002089584A Expired - Fee Related CA2089584C (en) | 1992-01-16 | 1993-02-16 | Echangeur de chaleur |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0552122B1 (en) |
| CA (1) | CA2089584C (en) |
| DE (1) | DE69300038T2 (en) |
| ES (1) | ES2068043T3 (en) |
| FR (1) | FR2686408B1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1305868B1 (en) * | 1998-12-15 | 2001-05-21 | Ocean Spa | CONDENSER FOR A REFRIGERATOR, A FREEZER, THEIR SIMILAR COMBINATIONS |
| DE602005006281T2 (en) * | 2004-07-22 | 2009-05-07 | P.S.A. | HEAT EXCHANGER WITH SPOUT SPOOL / N AND SPIRAL / N LAMELLE / N |
| FR2873432B1 (en) | 2004-07-22 | 2016-09-09 | Anjou Piscine Service | HEAT EXCHANGER WITH SERPENTIN (S) AND RING HELICOIDAL (S) |
| DE102008059543A1 (en) * | 2008-11-30 | 2010-06-02 | Solarhybrid Ag | heat exchangers |
| CN102589339A (en) * | 2012-03-21 | 2012-07-18 | 刘滕军 | Pure titanium heat exchanger with titanium pipes passing in and out vertically |
| CN109059250B (en) * | 2014-07-07 | 2020-11-03 | 福州斯狄渢电热水器有限公司 | Heating cup with long service life |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1939564A1 (en) * | 1968-08-06 | 1970-02-12 | Atomic Power Construction Ltd | Suspension system for multiple pipe arrangements, especially in heat exchangers of nuclear reactors |
| DE3038344C2 (en) * | 1980-10-10 | 1982-12-16 | Hans 3559 Battenberg Vießmann | Device for heating a liquid |
| EP0057850B1 (en) * | 1981-02-06 | 1985-03-13 | Joh. Vaillant GmbH u. Co. | Heat exchanger for liquids |
| DE3221361A1 (en) * | 1982-06-05 | 1983-12-08 | Hahndorff, Ralf, 6102 Pfungstadt | Tubular heat exchanger |
| ES2013725B3 (en) * | 1986-11-13 | 1990-06-01 | Hamon-Sobelco S A | ASSEMBLY FOR WELDING OF TUBULAR PLATES IN RADIATORS, CONTAINING SOLID TITANIUM TUBULAR PLATES |
-
1992
- 1992-01-16 FR FR9200571A patent/FR2686408B1/en not_active Expired - Fee Related
-
1993
- 1993-01-13 DE DE69300038T patent/DE69300038T2/en not_active Expired - Fee Related
- 1993-01-13 ES ES93460002T patent/ES2068043T3/en not_active Expired - Lifetime
- 1993-01-13 EP EP93460002A patent/EP0552122B1/en not_active Expired - Lifetime
- 1993-02-16 CA CA002089584A patent/CA2089584C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| FR2686408A1 (en) | 1993-07-23 |
| EP0552122B1 (en) | 1994-12-28 |
| DE69300038D1 (en) | 1995-02-09 |
| EP0552122A1 (en) | 1993-07-21 |
| FR2686408B1 (en) | 1998-01-30 |
| ES2068043T3 (en) | 1995-04-01 |
| DE69300038T2 (en) | 1995-05-04 |
| CA2089584A1 (en) | 1994-08-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |