WO2000047939A1 - A condenser - Google Patents
A condenser Download PDFInfo
- Publication number
- WO2000047939A1 WO2000047939A1 PCT/GB2000/000307 GB0000307W WO0047939A1 WO 2000047939 A1 WO2000047939 A1 WO 2000047939A1 GB 0000307 W GB0000307 W GB 0000307W WO 0047939 A1 WO0047939 A1 WO 0047939A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- condenser
- refrigerant
- tubes
- flowpaths
- condenser according
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/0202—Header boxes having their inner space divided by partitions
- F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
- F28F9/0209—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions
- F28F9/0212—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions the partitions being separate elements attached to header boxes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3227—Cooling devices using compression characterised by the arrangement or the type of heat exchanger, e.g. condenser, evaporator
-
- 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
- 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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
- F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
- F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
- F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/02—Tubular elements of cross-section which is non-circular
- F28F1/04—Tubular elements of cross-section which is non-circular polygonal, e.g. rectangular
- F28F1/045—Tubular elements of cross-section which is non-circular polygonal, e.g. rectangular with assemblies of stacked elements
-
- 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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
- F28D2021/0084—Condensers
Definitions
- the present invention relates to a condenser, and in particular to a condenser for use in an air conditioning or refrigeration system (particularly for automotive use) .
- EP-B- 0219974 discloses a condenser for an automotive refrigeration/air conditioning system in which condenser refrigerant flow tubes have a hydraulic diameter in the range 0.381mm to 1.778mm. Hydraulic diameters at approximately 0.9mm are said to optimise ultimate heat transfer efficiency.
- a condenser for use in an air conditioning or refrigeration system, the condenser comprising a plurality of refrigerant flowpaths extending adjacent one another, said flowpaths being grouped such that adjacent groups carry refrigerant passes in opposed directions across the condenser, wherein the arrangement of groups is such that the number of refrigerant passes across the condenser is 5 or above.
- the hydraulic diameter of refrigerant flowpaths in a respective pass is preferably substantially at or above l.' ⁇ mm. Most preferably, the hydraulic diameter of passes is substantially at or above 1.75mm.
- a further benefit and significant advantage is that, particularly at flowpath hydraulic diameters in the preferred range, reduced refrigerant pressure drop is found to occur across the condenser. This is of significant technical benefit in that the overall system energy requirements are reduced.
- the number of refrigerant passes across the condenser is 10 or less.
- the refrigerant flowpaths are preferably substantially parallel to one another across the condenser.
- the condenser is desirably air cooled.
- the refrigerant flowpaths typically comprise tubes (preferably flattened tubes) extending across the condenser, the tubes preferably including internal flowpath dividers arranged to divide the tube into a plurality of flowpaths.
- the internal flowpath dividers may comprise inserts for respective tubes.
- An airflow matrix is preferably provided intermediate adjacent tubes.
- the airflow matrix preferably comprises a series of fins or louvres.
- the number of tubes in at least one pass grouping is preferably substantially in the range 2 to 12.
- the number of tubes in the most upstream grouping is preferably substantially in the range 12 or less.
- the condenser comprises spaced headers between which the refrigerant flowpaths extend.
- the headers preferably include internal dividers directing the flow of refrigerant along adjacent passes through respective groups of refrigerant flow paths .
- Flowpaths in an upstream pass grouping preferably have a greater effective cross sectional area than flowpaths in a downstream pass group.
- Figure 1 is a schematic representation of an exemplary condenser according to the invention
- Figure 2 is an end view of a condenser tube used in the condenser of figure 1;
- Figure 3 is a graphical representation of condenser performance characteristics for prior art condensers and condensers according to the invention.
- Figure 4 is a further graphical representation of condenser performance characteristics for prior art condensers and condensers according to the invention.
- a condenser for use in an automotive air conditioning system.
- the condenser 1 comprises a pair of spaced headers 2, 3 ; header 2 is provided with an upstream inlet 4 for refrigerant vapour, whereas header 3 is provided with a downstream condensate outlet 5.
- header 2 is provided with an upstream inlet 4 for refrigerant vapour
- header 3 is provided with a downstream condensate outlet 5.
- the refrigerant enters via inlet 4 in vapour phase and passes, in succession, through banks 7a, 7b, 7c, 7d and 7e of condenser tubes 6 before the refrigerant condensate exits via outlet 5.
- each bank comprising a series of tubes 6 extending between the headers and spaced by inter-tube airways permitting cooling air to be drawn (typically by a fan) through the condenser in an airflow direction transverse to the longitudinal direction of tubes 6.
- the airways may be defined by inter-tube fins defining an airway matrix of maximum heat transfer area as is conventional in the condenser art and described in, for example, EP-B-0219974.
- each tube 6 includes a number of internal divisions defining smaller flow channels 8, such that the hydraulic diameter of the channels 8 (and for each tube 6) is approximately 1.730mm.
- the hydraulic diameter needs to be at least 1.5mm (preferably at least 1.65mm).
- the headers 2, 3 are provided with internal baffles 9 ensuring that the refrigerant follows a serpentine path through the condenser to flow along a path through adjacent banks (7a, 7b; 7b, 7c; 7c, 7d; 7d, 7e) in opposed pass directions across the condenser 1.
- curve A represents the performance of a known type 4 -pass condenser having a Hydraulic Diameter (Dh) of 1.023 mm (falling within the range specified in EP-B-0219974) .
- Curve C represents characteristics of a condenser according to the invention having a five refrigerant pass regime, as described above and shown in Figure 1, in which the number of tubes 6 per pass (i.e.
- Curve B represents a condenser according to the invention having six passes (i.e. banks 7) having from inlet to outlet banks 7 including 10-7-6-5- 4-3 tubes per bank/pass respectively.
- the Hydraulic Diameter (Dh) of the tubes in the condensers represented by curves B and C are 1.730mm.
- Figure 4 shows corresponding curves for A, B and C detailing refrigerant pressure drop and refrigerant flow rate.
- the increased number of passes for condensers according to the invention provides thermal performance characteristics approaching closely the performance of condensers falling in the range of EP-B-0219974.
- the air side pressure drop is not significantly affected when compared to the known condenser.
- the five and six pass condensers 1 of the invention exhibit significantly less refrigerant pressure drop across the condenser than the known condenser (curve A) . This means that the refrigeration system compressor is required to carry out less work and results in overall energy savings for systems employing condensers according to the invention.
- a further benefit of the invention is that it enables adequate condenser performance to be achieved outside the Hydraulic Diameter range specified in EP-B-0219974.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00901764A EP1153256A1 (en) | 1999-02-11 | 2000-02-03 | A condenser |
AU23064/00A AU2306400A (en) | 1999-02-11 | 2000-02-03 | A condenser |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9903050.4 | 1999-02-11 | ||
GB9903050A GB2346680A (en) | 1999-02-11 | 1999-02-11 | Condenser |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000047939A1 true WO2000047939A1 (en) | 2000-08-17 |
Family
ID=10847516
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2000/000307 WO2000047939A1 (en) | 1999-02-11 | 2000-02-03 | A condenser |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1153256A1 (en) |
AU (1) | AU2306400A (en) |
GB (1) | GB2346680A (en) |
WO (1) | WO2000047939A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1531309A3 (en) * | 2003-11-13 | 2005-07-20 | Calsonic Kansei UK Limited | Condenser |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020195240A1 (en) * | 2001-06-14 | 2002-12-26 | Kraay Michael L. | Condenser for air cooled chillers |
US20030140647A1 (en) * | 2002-01-31 | 2003-07-31 | Gawthrop Peter Rex | Receiverless air conditioning system |
EP2107328B1 (en) * | 2008-04-02 | 2012-07-11 | Behr GmbH & Co. KG | Vaporiser |
DE102011007784A1 (en) | 2011-04-20 | 2012-10-25 | Behr Gmbh & Co. Kg | capacitor |
JP5858478B2 (en) * | 2012-09-04 | 2016-02-10 | シャープ株式会社 | Parallel flow type heat exchanger and air conditioner equipped with the same |
DE102013204294A1 (en) * | 2013-03-12 | 2014-10-02 | Behr Gmbh & Co. Kg | Condenser assembly for refrigerant |
JP7164286B2 (en) * | 2016-04-27 | 2022-11-01 | 東芝ライフスタイル株式会社 | refrigerator |
FR3112312B1 (en) * | 2020-07-08 | 2022-09-02 | Valeo Systemes Thermiques | Thermal management device for the batteries of an electric or hybrid motor vehicle |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB938888A (en) * | 1958-11-19 | 1963-10-09 | Williams Engineering Company L | Improvements in or relating to heat exchanger plates |
EP0219974A2 (en) | 1985-10-02 | 1987-04-29 | Modine Manufacturing Company | Condenser with small hydraulic diameter flow path |
EP0219947A2 (en) | 1985-08-28 | 1987-04-29 | Merck & Co. Inc. | Use of 1-methyl-2-methylsulphonyl-4-nitroimidazole as an antiprotozoal and antibacterial agent |
EP0374896A2 (en) * | 1988-12-22 | 1990-06-27 | THERMAL-WERKE Wärme-, Kälte-, Klimatechnik GmbH | Flat tube condenser, manufacturing method and uses |
DE3843306A1 (en) * | 1988-12-22 | 1990-06-28 | Thermal Waerme Kaelte Klima | Flat pipe liquefier for a coolant of an air-conditioning system for a vehicle |
GB2284471A (en) * | 1992-07-24 | 1995-06-07 | Furukawa Electric Co Ltd | Flat condenser tube |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02287094A (en) * | 1989-04-26 | 1990-11-27 | Zexel Corp | Heat exchanger |
JP3044395B2 (en) * | 1990-12-28 | 2000-05-22 | 株式会社ゼクセル | Receiver dryer integrated condenser |
US5682944A (en) * | 1992-11-25 | 1997-11-04 | Nippondenso Co., Ltd. | Refrigerant condenser |
DE69626595T2 (en) * | 1995-10-18 | 2003-09-18 | Calsonic Kansei Corp | Condenser with a liquid container |
US5752566A (en) * | 1997-01-16 | 1998-05-19 | Ford Motor Company | High capacity condenser |
-
1999
- 1999-02-11 GB GB9903050A patent/GB2346680A/en not_active Withdrawn
-
2000
- 2000-02-03 AU AU23064/00A patent/AU2306400A/en not_active Abandoned
- 2000-02-03 WO PCT/GB2000/000307 patent/WO2000047939A1/en not_active Application Discontinuation
- 2000-02-03 EP EP00901764A patent/EP1153256A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB938888A (en) * | 1958-11-19 | 1963-10-09 | Williams Engineering Company L | Improvements in or relating to heat exchanger plates |
EP0219947A2 (en) | 1985-08-28 | 1987-04-29 | Merck & Co. Inc. | Use of 1-methyl-2-methylsulphonyl-4-nitroimidazole as an antiprotozoal and antibacterial agent |
EP0219974A2 (en) | 1985-10-02 | 1987-04-29 | Modine Manufacturing Company | Condenser with small hydraulic diameter flow path |
EP0374896A2 (en) * | 1988-12-22 | 1990-06-27 | THERMAL-WERKE Wärme-, Kälte-, Klimatechnik GmbH | Flat tube condenser, manufacturing method and uses |
DE3843306A1 (en) * | 1988-12-22 | 1990-06-28 | Thermal Waerme Kaelte Klima | Flat pipe liquefier for a coolant of an air-conditioning system for a vehicle |
GB2284471A (en) * | 1992-07-24 | 1995-06-07 | Furukawa Electric Co Ltd | Flat condenser tube |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1531309A3 (en) * | 2003-11-13 | 2005-07-20 | Calsonic Kansei UK Limited | Condenser |
Also Published As
Publication number | Publication date |
---|---|
GB2346680A (en) | 2000-08-16 |
GB9903050D0 (en) | 1999-03-31 |
AU2306400A (en) | 2000-08-29 |
EP1153256A1 (en) | 2001-11-14 |
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