EP2843324A1 - A shell-and-plate heat exchanger and use of a shell-and-plate heat exchanger - Google Patents
A shell-and-plate heat exchanger and use of a shell-and-plate heat exchanger Download PDFInfo
- Publication number
- EP2843324A1 EP2843324A1 EP13181858.5A EP13181858A EP2843324A1 EP 2843324 A1 EP2843324 A1 EP 2843324A1 EP 13181858 A EP13181858 A EP 13181858A EP 2843324 A1 EP2843324 A1 EP 2843324A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shell
- heat exchanger
- condenser
- subcooler
- refrigerant
- 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
- 239000003507 refrigerant Substances 0.000 claims abstract description 108
- 238000012546 transfer Methods 0.000 claims abstract description 47
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 230000005494 condensation Effects 0.000 claims abstract description 4
- 238000009833 condensation Methods 0.000 claims abstract description 4
- 239000002826 coolant Substances 0.000 claims description 48
- 239000007788 liquid Substances 0.000 claims description 33
- 238000000926 separation method Methods 0.000 claims description 26
- 238000005057 refrigeration Methods 0.000 claims description 6
- 238000013461 design Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical group N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0006—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the plate-like or laminated conduits being enclosed within a pressure vessel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/02—Subcoolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/04—Desuperheaters
-
- 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
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0012—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the apparatus having an annular form
-
- 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
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
-
- 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
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0093—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
- F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
- F28F3/046—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being linear, e.g. corrugations
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)
Abstract
Description
- The present invention relates to a shell-and-plate heat exchanger for cooling and condensing a circulating refrigerant. The invention further relates to use of a shell-and-plate heat exchanger.
- Shell-and-plate (or plate-and-shell) heat exchangers consist of a series of corrugated plates peripherally welded to each other in pairs (so-called cassettes) which in turn is welded to each other along the entrance holes and exit holes to for a complete plate pack. The welded plate pack is inserted and either welded or bolted within a tubular shell, typically formed from steel and typically without peripheral gaskets. The shell-and-plate heat exchanger is a versatile design which combines the strength of a shell-and-tube exchanger with the thermal efficiency of a plate exchanger in that the shell-and-plate heat exchanger combines the pressure and temperature capabilities of a typically cylindrical shell with the excellent heat transfer performance of a plate heat exchanger. The round or oblong shell and plates ensure an even distribution of mechanical loads, without the stress concentrations that occur in the corners of rectangular plates. Thus, the shell-and-plate heat exchanger combines the benefits of a traditional shell and tube type heat exchanger but with the high efficiency provided for in a plate type exchanger.
- From
WO 97/45689 - It is therefore an object of the present invention to provide for a more simple and cost-efficient heat exchanger design.
- The invention relates to a shell-and-plate heat exchanger for cooling and condensing a circulating refrigerant. The heat exchanger comprises a desuperheater for lowering the temperature of the gaseous refrigerant to a temperature above the condensation temperature of the refrigerant, wherein the desuperheater is formed by a stack of corrugated desuperheater heat transfer plates. The desuperheater is connected to a condenser for condensing the refrigerant, wherein the condenser is formed by a stack of corrugated condenser heat transfer plates. The condenser is connected to a subcooler for further lowering the temperature of the condensed refrigerant, wherein the subcooler is formed by a stack of corrugated subcooler heat transfer plates, and wherein the stack of corrugated desuperheater heat transfer plates, the stack of corrugated condenser heat transfer plates and the stack of corrugated subcooler heat transfer plates are arranged inside the same common continuous shell.
- Pressure vessels like desuperheaters, condensers and subcoolers have to be pressure tested and approved by an independent authority before commercial use. This is both complex and expensive. Thus, by arranging the desuperheater, the condenser and the subcooler inside the same common continuous shell all three functions can be obtained by means of only one test and approval.
- Furthermore, by arranging the desuperheater, the condenser and the subcooler inside the same common continuous shell, complicated finishing arrangements and piping between the three can be avoided hereby reducing cost and simplifying installation. And the overall shell-and-plate heat exchanger arrangement is more compact hereby simplifying installation and increasing usability.
- In an aspect of the invention, said condenser and said subcooler is connected through a liquid refrigerant container arranged bellow said stack of condenser heat transfer plates and/or said stack of subcooler heat transfer plates, in that said condensed refrigerant is collected in said liquid refrigerant container from which said liquid refrigerant continues into said subcooler through a subcooler inlet conduit.
- The efficiency of the subcooler is severely reduced if the refrigerant is gaseous when entering the subcooler. And since the efficiency of e.g. a refrigeration cycle is also severely reduced if the shell-and-plate heat exchanger delivers gaseous refrigerant it is advantageous to ensure that only liquid refrigerant is continued into the subcooler by using gravity to collect the liquid refrigerant in a liquid refrigerant container arranged beneath the condenser and/or the subcooler.
- In an aspect of the invention, a conduit inlet opening of said subcooler inlet conduit is arranged at the bottom of said liquid refrigerant container.
- Arranging the inlet opening of the subcooler inlet conduit at the bottom of the liquid refrigerant container is advantageous in that it increases the capacity of the refrigerant container, in that the subcooler inlet conduit hereby is capable of almost completely emptying the liquid refrigerant container.
- In an aspect of the invention, said liquid refrigerant container is arranged outside said shell.
- Arranging the liquid refrigerant container outside the heat exchanger shell is advantageous in that it enables a simpler heat exchanger design.
- In an aspect of the invention, said shell encircles said desuperheater, said condenser and said subcooler.
- Making the shell encircle the desuperheater, the condenser and the subcooler is advantageous in that this design ensures a strong an durable shell capable of withstanding high internal pressure.
- In an aspect of the invention, said shell-and-plate heat exchanger comprises a refrigerant conduit through which said refrigerant is moved from said desuperheater to said condenser and wherein said refrigerant conduit is arranged inside said shell.
- Arranging the refrigerant conduit inside the shell is advantageous in that complicated piping hereby can be avoided, thus reducing cost and simplifying installation.
- In an aspect of the invention, said shell-and-plate heat exchanger comprises a coolant conduit extending continuously through said desuperheater, said condenser and said subcooler inside said common continuous shell.
- Arranging the coolant conduit to extend continuously through the desuperheater, the condenser and the subcooler inside the shell is advantageous in that external piping is avoided, thus reducing cost and simplifying installation.
- In an aspect of the invention, said desuperheater and said condenser are separated by a first separation plate arranged inside said common continuous shell and wherein said first separation plate comprises a refrigerant conduit and a coolant passage opening.
- Arranging a separation plate between the desuperheater and the condenser is advantageous in that the plate will ensure that refrigerant is guided correctly from the desuperheater and into the condenser, while at the same time ensuring that condensed liquid cannot pass from the condenser and into the desuperheater. Hereby is the efficiency of both functions increased.
- In an aspect of the invention, said condenser and said subcooler are separated by a second separation plate arranged inside said common continuous shell and wherein said second separation plate comprises only a coolant passage opening.
- Arranging a separation plate between the condenser and the subcooler is advantageous in that the plate will prevent that refrigerant is passed directly from the condenser and into the subcooler, hereby enabling that liquid and gaseous refrigerant can be separated to increase the function of the subcooler.
- In an aspect of the invention, a separation gasket is arranged between one or more of said heat transfer plates and said shell to guide the refrigerant flow between said condenser and said subcooler and/or said desuperheater and said condenser.
- Using gaskets to separate the condenser from the subcooler and/or the desuperheater from the condenser - instead of a first and/or a second separation plate - is advantageous in that gaskets entail a simpler and less expensive heat exchanger design.
- In an aspect of the invention, said continuous shell is formed as a monolithic tube.
- Forming the shell as a monolithic tube is advantageous in that it simplifies the manufacturing process and reduces cost, since the shell is a pressure vessel.
- In an aspect of the invention, said continuous shell is formed by two or more connected shell parts.
- Forming the shell by two or more connected shell parts is advantageous in that it hereby is possible to subsequently open the shell e.g. in case of maintenance or repair work.
- In an aspect of the invention, said heat exchanger comprises endplates welded to both ends of said shell.
- Welding the endplates ensures that the pressure vessel is both strong and tight.
- In an aspect of the invention, said shell is cylindrical.
- Forming the shell cylindrical is advantageous in that this shape ensure an even distribution of the pressure load on the shell.
- In an aspect of the invention, said desuperheater heat transfer plates, said condenser heat transfer plates and said subcooler heat transfer plates are substantially identical.
- Forming all the heat transfer plates inside the shell-and-plate heat exchanger substantially identical is advantageous in that it reduces production costs and simplifies assembly.
- In an aspect of the invention, said common continuous shell is a pressure vessel designed and/or approved to withstand a pressure between 0.7 and 15 MPa, preferably between 1.5 and 10 and most preferred between 2.5 and 7.5 MPa.
- If the pressure, the shell is designed to withstand, is too low, the risk of leakage or even explosion is too big. However, if the pressure, the shell is designed to withstand, is too high the shell becomes too heavy and expensive. Thus, the present pressure ranges presents an advantageous relationship between safety and cost.
- The invention also relates to use of a shell-and-plate heat exchanger according to any of the previously disclosed shell-and-plate heat exchangers for cooling and condensing a refrigerant in a refrigeration cycle.
- Using a shell-and-plate heat exchanger according to the present invention for cooling and condensing a refrigerant in a refrigeration cycle is advantageous in that it ensures a less expensive and safer refrigeration cycle.
- The invention will be explained further herein below with reference to the figures in which:
- Fig. 1
- shows an embodiment of the coolant flow through a cross section of a shell-and-plate heat exchanger, as seen from the side,
- Fig. 2
- shows an embodiment of the refrigerant flow through a cross section of a shell-and-plate heat exchanger, as seen from the side,
- Fig. 3
- shows a cross section through a dividable shell-and-plate heat exchanger, as seen from the side, and
- Fig. 4
- shows an embodiment of a heat transfer plate for a shell-and-plate heat exchanger, as seen from the front.
-
Figure 1 shows an embodiment of the coolant flow through a cross section of a shell-and-plate heat exchanger 1, as seen from the side. - In this embodiment the
coolant inlet 22 is arranged in oneendplate 21 and thecoolant outlet 23 is arranged in theopposite endplate 21, while therefrigerant inlet 24 is arranged at thecoolant outlet 23 end of theshell 8 and therefrigerant outlet 25 is arranged at the other end of theshell 8. Thus, in this embodiment the refrigerant and the coolant is arranged to flow countercurrently but in another embodiment the refrigerant and the coolant could flow in the same direction through the heat exchanger 1. - Also, in another embodiment the heat exchanger 1 could comprise more than one
coolant inlet 22,coolant outlet 23,refrigerant inlet 24 and/orrefrigerant outlet 25 and/or some or all theinlets outlets endplates 22. - In this embodiment the heat exchanger 1 comprises a
desuperheater 2, acondenser 4 and asubcooler 6 arranged inside the same commoncontinuous shell 8 encircling all three heat exchanger functions. - Each of the
desuperheater 2, thecondenser 4 and thesubcooler 6 are formed by a number ofheat transfer plates fig. 4 . - The arrows on
figure 1 illustrate an embodiment of a coolant flow through thecoolant conduit 14 of the heat exchanger 1. - In this embodiment the
entire coolant conduit 14 is arranged inside saidshell 8 but in another embodiment at least parts of thecoolant conduit 14 could be arranged outside theshell 8 e.g. to pass aseparation plate - First the coolant enters the heat exchanger 1 at the
coolant inlet 22 and flows through thesubcooler 6. Asecond separation plate 18 blocks the access to thecondenser 4 and thus forces the coolant to run transversely towards the upper coolant passage opening 17 in thesecond separation plate 18 from which it enters thecondenser 4. In thecondenser 4, condenser coolant blocking means 30 forces the coolant to run transversely towards the bottom of thecondenser 4 and then longitudinal until afirst separation plate 15 forces the coolant upwards towards the upper coolant passage opening 17 in thefirst separation plate 15. From the coolant passage opening 17 the coolant is forced down through thedesuperheater 2 and finally out through thecoolant outlet 23. - Thus, in this embodiment the coolant performs one pass in the
subcooler 6 and thedesuperheater 2 and two passes in thecondenser 4 but in another embodiment one or more of thedesuperheater 2,condenser 4 andsubcooler 6 could be arranged to comprise means for allowing fewer or particularly more passes. - The differences between the refrigerant and the coolant, flowing through the heat exchanger 1, are that the refrigerant is always circulating in a closed circuit, wherein it changes phase from one state of matter to another (between gas and liquid form) at least twice during circulation, while the coolants main purpose is to remove heat from the refrigerant.
- In this embodiment the coolant is water e.g. circulating through an external air cooled heat exchanger or transporting the absorbed heat to a particular place where it can be utilised.
- However, in another embodiment the coolant could be brine or another form of natural or artificial coolant suitable for flowing through a combined
desuperheater 2,condenser 4 andsubcooler 6. - In this embodiment the desuperheater
heat transfer plates 3, the condenserheat transfer plates 5 and the subcoolerheat transfer plates 7 are substantially identical to reduce production cost and simplifying assembly but in another embodiment theplates plates - Likewise, in this embodiment all the
plates shell 8 and theendplates 21 are all made from stainless steel because of this materials strength and durability but in another embodiment all or some of the heat exchanger parts could be made from another material such as titanium, aluminium, a composite material or other. -
Fig. 2 shows an embodiment of the refrigerant flow through a cross section of a shell-and-plate heat exchanger 1, as seen from the side. - The arrows on
figure 2 illustrate an embodiment of a refrigerant flow through the combineddesuperheater 2,condenser 4 andsubcooler 6. - In this embodiment the hot gaseous refrigerant enters the heat exchanger 1 through the
refrigerant inlet 24 from which it is directed up through thedesuperheater 2 to dissipate some of its heat to the coolant flowing through the inside of the plate pack in thedesuperheater 2. Arefrigerant conduit 13 along the upper periphery of thefirst separation plate 15 ensures that the desuperheated gaseous refrigerant is directed into the condenser there the refrigerant condenses while passing down through the relatively coldheat transfer plates 5 in thecondenser 4. The liquid refrigerant is then guided out of theshell 8 through the liquidrefrigerant outlet 16 and collected in a liquidrefrigerant container 9 arranged outside theshell 8. - In another embodiment the liquid refrigerant could instead or also be collected inside the
shell 8 before being lead to thesubcooler 6. - A
subcooler inlet conduit 10 extends down into the liquidrefrigerant container 9 so that an conduit inlet opening 11 of thesubcooler inlet conduit 10 is arranged at the bottom 12 of the liquidrefrigerant container 9 to ensure that only liquid is guided into thesubcooler 6. - In the
subcooler 6 the liquid refrigerant is further cooled before it exits the heat exchanger 1 through therefrigerant outlet 25 arranged at the top of theshell 8. - In this embodiment the refrigerant only makes one pass through each of the
desuperheater 2, thecondenser 4 and thesubcooler 6 but in another embodiment one or more of thedesuperheater 2,condenser 4 andsubcooler 6 could be arranged to comprise means for allowing more than one pass. - In this embodiment the refrigerant is ammonia but in another embodiment the refrigerant could be carbon dioxide, Butane, a HFC , water vapour or another fluid suitable for acting as a refrigerant in a shell-and-plate heat exchanger 1.
- In this embodiment the shell-and-plate heat exchanger 1 according to the present invention is used for cooling and condensing a refrigerant in a refrigeration cycle. I.e. after the cold liquid refrigerant leaves the shell-and-plate heat exchanger 1 it is typically directed to an expansion valve, which will reduce the pressure making at least some of the refrigerant evaporate and thus making its temperature drop drastically. At this stage the cold refrigerant is then used for cooling purposes by which the entire refrigerant evaporates. The gaseous refrigerant is then directed through a compressor compressing the refrigerant, which in turn raises its temperature drastically. The hot gaseous refrigerant is then lead to the
desuperheater 2, where the refrigerants temperature is lowered to just above the condensation temperature before it enters thecondenser 4 where the gaseous refrigerant is condensed into a liquid refrigerant. Finally, the liquid refrigerant is cooled further in thesubcooler 6 before the cycle is repeated. - In the embodiment disclosed in
figures 1-3 the different functions in the heat exchanger 1 i.e. thedesuperheater 2,condenser 4 andsubcooler 6 are separated by means of afirst separation plate 15 and asecond separation plate 18. However, in another embodiment of the invention functions could be separated by means of dedicated gaskets (not shown) arranged to guide the refrigerant flow between the two neighbouring functions. If gaskets are used instead ofseparation plates desuperheater 2,condenser 4 andsubcooler 6 could be formed as one big plate pack with coolant blocking means strategically arranged in one of theinlet cassette opening 26 andoutlet cassette opening 27 where the gasket(s) is arranged -Inlet cassette opening 26 oroutlet cassette opening 27 are shown and discussed in relation withfig. 4 . -
Fig. 3 shows a cross section through a dividable shell-and-plate heat exchanger 1, as seen from the side. - In the embodiments disclosed in
figs. 1 and2 theshell 8 is formed as a single monolithic cylindrical tube to increase the strength of theshell 8 and reduce the risk of unwanted stress concentrations in theshell 8. In another embodiment theshell 8 could also be formed by a number of shell parts welded together or as disclosed infig. 3 by means of several shell parts 19, 20 bolted together to ensure that theshell 8 subsequently can be opened e.g. in case of maintenance and/or repair. The fully welded desuperheater heat transfer plate pack, condenser heat transfer plate pack and subcooler heat transfer plate pack allows quick and easy removal and refitting in theshell 8, thus ensuring that process downtime is kept to a minimum. - In this embodiment the
first separation plate 15 is arranged to extend out between the two shell parts 19, 20 in the joint. It is hereby possible to securely arrange thefirst separation plate 15 in a fixed position. -
Fig. 4 shows an embodiment of aheat transfer plate - In this embodiment the
plate plate plates inlet cassette opening 26 will only be able to exit the cassette through theoutlet cassette opening 27. A number of these cassettes are then welded together around theinlet cassette openings 26 and theoutlet cassette openings 27 to form a desuperheater heat transfer plate pack, a condenser heat transfer plate pack or a subcooler heat transfer plate pack. The coolant flow is then established inside the cassettes and the refrigerant flow is established across the outside of (i.e. between) the cassettes. - In this embodiment the
plate circular shell 8 but in another embodiment theplates shell 8 of a different shape - such as oval or prolonged. - In this embodiment the
plate channels 29 so that when a cassette is formed the coolant can flow through thesechannels 29 from theinlet cassette opening 26 to theoutlet cassette opening 27. The embossed pattern also increases the surface area of theplate - In this embodiment the
plate plate plate plate shell 8. - In this embodiment the
plates shell 8 to ensure correct refrigerant flow through and around theplates plates shell 8. - To ensure that the coolant do not mix with the refrigerant, the respective plate packs are also welded to the
respective separation plates coolant passage openings 17,inlet cassette openings 26 andoutlet cassette openings 27. - In the foregoing, the invention is described in relation to specific embodiments of shell-and-plate heat exchangers 1,
desuperheaters 2,condensers 4, subcoolers 6 and other as shown in the drawings, but it is readily understood by a person skilled in the art that the invention can be varied in numerous ways within the scope of the appended claims. -
- 1.
- Shell-and-plate heat exchanger
- 2.
- Desuperheater
- 3.
- Desuperheater heat transfer plates
- 4.
- Condenser
- 5.
- Condenser heat transfer plates
- 6.
- Subcooler
- 7.
- Subcooler heat transfer plates
- 8.
- Shell
- 9.
- Liquid refrigerant container
- 10.
- Subcooler inlet conduit
- 11.
- Conduit inlet opening
- 12.
- Bottom of liquid refrigerant container
- 13.
- Refrigerant conduit
- 14.
- Coolant conduit
- 15.
- First separation plate
- 16.
- Liquid refrigerant outlet
- 17.
- Coolant passage opening
- 18.
- Second separation plate
- 19.
- First shell part
- 20.
- Second shell part
- 21.
- Endplates
- 22.
- Coolant inlet
- 23.
- Coolant outlet
- 24.
- Refrigerant inlet
- 25.
- Refrigerant outlet
- 26.
- Inlet cassette opening
- 27.
- Outlet cassette opening
- 28.
- Peripheral cutting
- 29.
- Channel
- 30.
- Condenser coolant blocking means
Claims (15)
- A shell-and-plate heat exchanger (1) for cooling and condensing a circulating refrigerant, said heat exchanger (1) comprising
a desuperheater (2) for lowering the temperature of the gaseous refrigerant to a temperature above the condensation temperature of said refrigerant, wherein said desuperheater (2) is formed by a stack of corrugated desuperheater heat transfer plates (3), said desuperheater (2) being connected to
a condenser (4) for condensing said refrigerant, wherein said condenser (4) is formed by a stack of corrugated condenser heat transfer plates (5), said condenser (4) being connected to
a subcooler (6) for further lowering the temperature of said condensed refrigerant, wherein said subcooler (6) is formed by a stack of corrugated subcooler heat transfer plates (7), and
wherein said stack of corrugated desuperheater heat transfer plates (3), said stack of corrugated condenser heat transfer plates (5) and said stack of corrugated subcooler heat transfer plates (7) are arranged inside the same common continuous shell (8). - A shell-and-plate heat exchanger (1) according to claim 1, wherein said condenser (4) and said subcooler (6) is connected through a liquid refrigerant container (9) arranged bellow said stack of condenser heat transfer plates (5) and/or said stack of subcooler heat transfer plates (7), in that said condensed refrigerant is collected in said liquid refrigerant container (9) from which said liquid refrigerant continues into said subcooler (6) through a subcooler inlet conduit (10).
- A shell-and-plate heat exchanger (1) according to claim 2, wherein a conduit inlet opening (11) of said subcooler inlet conduit (10) is arranged at the bottom (12) of said liquid refrigerant container (9).
- A shell-and-plate heat exchanger (1) according to claim 2 or 3, wherein said liquid refrigerant container (9) is arranged outside said shell (8).
- A shell-and-plate heat exchanger (1) according to one or more of the preceding claims, wherein said shell (8) encircles said desuperheater (2), said condenser (4) and said subcooler (6).
- A shell-and-plate heat exchanger (1) according to one or more of the preceding claims, wherein said shell-and-plate heat exchanger (1) comprises a refrigerant conduit (13) through which said refrigerant is moved from said desuperheater (2) to said condenser (4) and wherein said refrigerant conduit (13) is arranged inside said shell (8).
- A shell-and-plate heat exchanger (1) according to one or more of the preceding claims, wherein said shell-and-plate heat exchanger (1) comprises a coolant conduit (14) extending continuously through said desuperheater (2), said condenser (4) and said subcooler (6) inside said common continuous shell (8).
- A shell-and-plate heat exchanger (1) according to one or more of the preceding claims, wherein said desuperheater (2) and said condenser (4) are separated by a first separation plate (15) arranged inside said common continuous shell (8) and wherein said first separation plate (15) comprises a refrigerant conduit (13) and a coolant passage opening (17).
- A shell-and-plate heat exchanger (1) according to one or more of the preceding claims, wherein said condenser (4) and said subcooler (6) are separated by a second separation plate (18) arranged inside said common continuous shell (8) and wherein said second separation plate (18) comprises only a coolant passage opening (17).
- A shell-and-plate heat exchanger (1) according to one or more of the preceding claims, wherein said continuous shell (8) is formed as a monolithic tube.
- A shell-and-plate heat exchanger (1) according to one or more of claims 1-9, wherein said continuous shell (8) is formed by two or more connected shell parts (19, 20).
- A shell-and-plate heat exchanger (1) according to one or more of the preceding claims, wherein said heat exchanger (1) comprises endplates (21) welded to both ends of said shell (8).
- A shell-and-plate heat exchanger (1) according to one or more of the preceding claims, wherein said desuperheater heat transfer plates (3), said condenser heat transfer plates (5) and said subcooler heat transfer plates (7) are substantially identical.
- A shell-and-plate heat exchanger (1) according to one or more of the preceding claims, wherein said common continuous shell (8) is a pressure vessel designed and/or approved to withstand a pressure between 0.7 and 15 MPa, preferably between 1.5 and 10 and most preferred between 2.5 and 7.5 MPa.
- Use of a shell-and-plate heat exchanger (1) according to any of the preceding claims for cooling and condensing a refrigerant in a refrigeration cycle.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES13181858T ES2848207T3 (en) | 2013-08-27 | 2013-08-27 | A shell and plate heat exchanger and the use of a shell and plate heat exchanger |
DK13181858.5T DK2843324T3 (en) | 2013-08-27 | 2013-08-27 | Shell and plate heat exchanger and use of a shell and plate heat exchanger |
EP13181858.5A EP2843324B1 (en) | 2013-08-27 | 2013-08-27 | A shell-and-plate heat exchanger and use of a shell-and-plate heat exchanger |
PCT/DK2014/050236 WO2015028021A1 (en) | 2013-08-27 | 2014-08-05 | A shell-and-plate heat exchanger and use of a shell-and-plate heat exchanger |
CN201480043801.4A CN105473958B (en) | 2013-08-27 | 2014-08-05 | A kind of use of shell plate type heat exchanger and shell plate type heat exchanger |
US14/906,602 US20160161191A1 (en) | 2013-08-27 | 2014-08-05 | Shell-and-plate heat exchanger and use of a shell-and-plate heat exchanger |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13181858.5A EP2843324B1 (en) | 2013-08-27 | 2013-08-27 | A shell-and-plate heat exchanger and use of a shell-and-plate heat exchanger |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2843324A1 true EP2843324A1 (en) | 2015-03-04 |
EP2843324B1 EP2843324B1 (en) | 2020-12-23 |
Family
ID=49033974
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13181858.5A Active EP2843324B1 (en) | 2013-08-27 | 2013-08-27 | A shell-and-plate heat exchanger and use of a shell-and-plate heat exchanger |
Country Status (6)
Country | Link |
---|---|
US (1) | US20160161191A1 (en) |
EP (1) | EP2843324B1 (en) |
CN (1) | CN105473958B (en) |
DK (1) | DK2843324T3 (en) |
ES (1) | ES2848207T3 (en) |
WO (1) | WO2015028021A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3236190A1 (en) * | 2016-04-19 | 2017-10-25 | HS Wroclaw Sp. z o.o. | Heat exchangers |
EP3236188A1 (en) * | 2016-04-18 | 2017-10-25 | HS Wroclaw Sp. z o.o. | Heat exchangers |
US11014425B2 (en) * | 2017-11-24 | 2021-05-25 | Titanx Holding Ab | Vehicle condenser |
US11236932B2 (en) | 2016-12-19 | 2022-02-01 | Vahterus Oy | Evaporator and a method for vaporizing a substance in an evaporator |
US11698228B2 (en) | 2020-01-14 | 2023-07-11 | Daikin Industries, Ltd. | Shell-and-plate heat exchanger |
Families Citing this family (7)
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US10537465B2 (en) * | 2015-03-31 | 2020-01-21 | Zoll Circulation, Inc. | Cold plate design in heat exchanger for intravascular temperature management catheter and/or heat exchange pad |
EP3179190A1 (en) * | 2015-12-11 | 2017-06-14 | Alfa Laval Corporate AB | Plate heat exchanger |
CN106872372B (en) * | 2017-03-17 | 2023-11-17 | 广西电网有限责任公司电力科学研究院 | Constant temperature integrating sphere device for gas analysis |
US11221151B2 (en) * | 2019-01-15 | 2022-01-11 | Johnson Controls Technology Company | Hot gas reheat systems and methods |
EP4067775A4 (en) * | 2020-01-14 | 2023-01-04 | Daikin Industries, Ltd. | Shell-and-plate heat exchanger |
JP6860095B1 (en) * | 2020-01-14 | 2021-04-14 | ダイキン工業株式会社 | Shell and plate heat exchanger |
US20230194184A1 (en) * | 2021-12-16 | 2023-06-22 | Danfoss A/S | Multipath plate-and-shell heat exchanger |
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2013
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- 2013-08-27 DK DK13181858.5T patent/DK2843324T3/en active
-
2014
- 2014-08-05 US US14/906,602 patent/US20160161191A1/en not_active Abandoned
- 2014-08-05 CN CN201480043801.4A patent/CN105473958B/en active Active
- 2014-08-05 WO PCT/DK2014/050236 patent/WO2015028021A1/en active Application Filing
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Also Published As
Publication number | Publication date |
---|---|
US20160161191A1 (en) | 2016-06-09 |
CN105473958B (en) | 2019-01-04 |
WO2015028021A1 (en) | 2015-03-05 |
CN105473958A (en) | 2016-04-06 |
EP2843324B1 (en) | 2020-12-23 |
ES2848207T3 (en) | 2021-08-05 |
DK2843324T3 (en) | 2021-03-08 |
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