EP1996739A1 - Use of a heat exchanger tube - Google Patents
Use of a heat exchanger tubeInfo
- Publication number
- EP1996739A1 EP1996739A1 EP07711975A EP07711975A EP1996739A1 EP 1996739 A1 EP1996739 A1 EP 1996739A1 EP 07711975 A EP07711975 A EP 07711975A EP 07711975 A EP07711975 A EP 07711975A EP 1996739 A1 EP1996739 A1 EP 1996739A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- exchanger tube
- tube according
- tube
- heat
- 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
- 229910000881 Cu alloy Inorganic materials 0.000 claims abstract description 7
- 239000010949 copper Substances 0.000 claims abstract description 7
- 229910052742 iron Inorganic materials 0.000 claims abstract description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 3
- 229910052718 tin Inorganic materials 0.000 claims abstract description 3
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 9
- 238000005275 alloying Methods 0.000 claims description 2
- 239000012535 impurity Substances 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052802 copper Inorganic materials 0.000 abstract description 5
- 238000005057 refrigeration Methods 0.000 abstract description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 abstract 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract 1
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract 1
- 239000001569 carbon dioxide Substances 0.000 abstract 1
- 239000011574 phosphorus Substances 0.000 abstract 1
- 239000006200 vaporizer Substances 0.000 abstract 1
- 239000011701 zinc Substances 0.000 abstract 1
- 239000003507 refrigerant Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000005304 joining Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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
- F28F21/085—Heat exchange elements made from metals or metal alloys from copper or copper alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
Definitions
- the present invention relates to the use of a heat exchanger tube made of a copper alloy.
- CO2 as a natural refrigerant that does not contribute to the destruction of the ozone layer and is neutral in its direct contribution to the greenhouse effect, is an ecologically interesting and economically viable alternative to the HFC refrigerants currently used in Europe, depending on the application and context.
- the working range of the refrigerant CO2 is at pressures up to 130 bar and thus far above the usual for CFC and HFC safety refrigerants pressures up to 35 bar. But Depending on the application, permissible pressures of up to 50 bar are also required for evaporators, in particular if hot gas defrosting is provided.
- Heat exchangers are used, difficult to realize, since very large pipe wall thicknesses are to be used, with corresponding negative effects on the processability, in particular the expansion and bending, the weight of the heat exchanger and the equipment costs. Instead, it is now state of the art to use pipes made of hot-dip galvanized steel or stainless steel, with which the said pressures are relatively easy to control.
- the invention includes the technical teaching, a heat exchanger tube consisting of a copper alloy containing the alloying elements [in% by weight] 0.05-3% Fe, 0.01-0.15% P, and optionally 0.05- 0.2% Zn 0.02 - 0.05% Sn and the remainder contains Cu and unavoidable impurities to be used as a gas cooler, condenser or evaporator tube of a CO2 refrigerating machine or heat pump.
- the invention is based on the consideration that a heat exchanger tube with an inside substantially smooth or textured surface for use in the gas cooler, condenser or evaporator of a working with CO2 chiller or heat pump is used. In this context, the term includes on the inside substantially smooth also by welding seams resulting surfaces.
- the working medium CO2 flows on the inside of the heat exchanger tubes and, depending on the temperature conditions of the specific application, has a pressure position that clearly stands out from the pressures known for CFC and HFC safety refrigerants and places high demands on the pressure resistance of the tubes used.
- the particular advantage is that by the higher-strength Cu alloys according to the invention, which allow small wall thicknesses even at high pressure levels, thus significant material savings and thus weight and cost advantages can be achieved.
- these Cu alloys have excellent processing properties, especially expansion, bending and brazing.
- the pipe outside diameter may be in the range of 3 to 16 mm.
- the ratio of the wall thickness to the pipe outside diameter can be advantageously selected in the range of 0.025 to 0.08. This results in pipe wall thicknesses which are in the similar size range as today for HFC safety refrigerants usually used copper tubes are made of Cu-DHP and thus can be expected very good properties with respect to the further processing,
- the pipe material may have a yield strength R p o , 2 over 160 N / mm 2 . It is further preferred that the tube material has a tensile strength R m above 300 N / mm 2 . This results, for example, for a pipe with an outer diameter of 9.52 mm and an operating pressure of 130 bar necessary pipe wall thicknesses of at most 0.55 mm and thus a material saving of more than 40% compared to pipes made of Cu-DHP.
- the heat exchanger tube may be formed of a strip material and have a weld.
- welds come into consideration, which extend in the axial direction or are spirally encircling.
- As a possible joining method for pipe production is particularly suitable for the high-frequency welding process. This results in particular advantages over other joining methods on the one hand, realizable high production speeds and, secondly, a microstructure state, which after a usually following annealing process has no loss of strength over the material not influenced by the joining process.
- the heat exchanger tube may be seamless.
- seamless tubes and welded tubes may be considered equivalent in the use of the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Sorption Type Refrigeration Machines (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006013384A DE102006013384B4 (en) | 2006-03-23 | 2006-03-23 | Use of a heat exchanger tube |
PCT/EP2007/002379 WO2007110165A1 (en) | 2006-03-23 | 2007-03-17 | Use of a heat exchanger tube |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1996739A1 true EP1996739A1 (en) | 2008-12-03 |
EP1996739B1 EP1996739B1 (en) | 2011-07-27 |
Family
ID=38072155
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07711975A Active EP1996739B1 (en) | 2006-03-23 | 2007-03-17 | Use of a heat exchanger tube |
Country Status (9)
Country | Link |
---|---|
US (1) | US20090301701A1 (en) |
EP (1) | EP1996739B1 (en) |
JP (1) | JP2009530581A (en) |
CN (1) | CN101395289B (en) |
AT (1) | ATE518013T1 (en) |
DE (1) | DE102006013384B4 (en) |
DK (1) | DK1996739T3 (en) |
ES (1) | ES2370352T3 (en) |
WO (1) | WO2007110165A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2716403A1 (en) | 2012-09-12 | 2014-04-09 | KME France SAS | Copper alloys for heat exchangers |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5446163B2 (en) * | 2008-08-04 | 2014-03-19 | ダイキン工業株式会社 | Grooved tube for heat exchanger |
KR20150003311A (en) * | 2012-04-16 | 2015-01-08 | 가부시키가이샤 유에이씨제이 | Level wound coil, method for manufacturing level wound coil, cross fin tube type heat exchanger, and method for manufacturing cross fin tube type heat exchanger |
AT518424B1 (en) * | 2016-09-13 | 2017-10-15 | Josef Höller Gmbh | Cooling and heating plate |
CN114085978A (en) * | 2021-10-15 | 2022-02-25 | 福建捷思金属科技发展有限公司 | Ultrahigh-pressure-resistant copper-iron alloy pipe fitting for refrigeration system and preparation method |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2373116A (en) * | 1941-10-31 | 1945-04-10 | Bundy Tubing Co | Method of uniting metals |
US4064914A (en) * | 1974-05-08 | 1977-12-27 | Union Carbide Corporation | Porous metallic layer and formation |
JPS5853057B2 (en) * | 1974-05-20 | 1983-11-26 | 株式会社神戸製鋼所 | Highly conductive copper-based alloy |
JPS53149121A (en) * | 1977-06-01 | 1978-12-26 | Tamagawa Kikai Kinzoku Kk | Flexible pipe made of copperrbased alloy |
JPS5835249B2 (en) * | 1977-11-30 | 1983-08-01 | 三菱マテリアル株式会社 | Cu alloy for seamless pipe manufacturing |
JPS5534616A (en) * | 1978-08-29 | 1980-03-11 | Furukawa Electric Co Ltd:The | High tensile copper alloy with high electric conductivity |
JPS58153747A (en) * | 1982-03-05 | 1983-09-12 | Nippon Denso Co Ltd | Corrosion-resistant copper alloy useful as fin of heat exchanger |
US4674566A (en) * | 1985-02-14 | 1987-06-23 | Olin Corporation | Corrosion resistant modified Cu-Zn alloy for heat exchanger tubes |
JPH0688177A (en) * | 1992-09-10 | 1994-03-29 | Kobe Steel Ltd | Production of copper alloy pipe |
MY115423A (en) * | 1993-05-27 | 2003-06-30 | Kobe Steel Ltd | Corrosion resistant copper alloy tube and fin- tube heat exchanger |
JP3813317B2 (en) * | 1997-08-12 | 2006-08-23 | 東芝キヤリア株式会社 | Refrigeration cycle equipment |
JPH11211378A (en) * | 1998-01-23 | 1999-08-06 | Hitachi Cable Ltd | Heat transfer pipe for heat-exchanger |
JP3303778B2 (en) * | 1998-06-16 | 2002-07-22 | 三菱マテリアル株式会社 | Seamless copper alloy tube for heat exchanger with excellent 0.2% proof stress and fatigue strength |
US20030066632A1 (en) * | 2001-10-09 | 2003-04-10 | Charles J. Bishop | Corrosion-resistant heat exchanger |
JP3794341B2 (en) * | 2002-03-28 | 2006-07-05 | 株式会社コベルコ マテリアル銅管 | Internal grooved tube and manufacturing method thereof |
JP3878640B2 (en) * | 2003-03-03 | 2007-02-07 | 三宝伸銅工業株式会社 | Heat resistant copper alloy material |
JP4550451B2 (en) * | 2004-03-11 | 2010-09-22 | 古河電気工業株式会社 | Heat exchanger using inner surface grooved heat transfer tube and inner surface grooved heat transfer tube |
JP4441467B2 (en) * | 2004-12-24 | 2010-03-31 | 株式会社神戸製鋼所 | Copper alloy with bending workability and stress relaxation resistance |
CN1687684A (en) * | 2005-04-05 | 2005-10-26 | 佛山市顺德区精艺万希铜业有限公司 | Rifled tube and making method thereof |
JP2013512341A (en) * | 2009-11-25 | 2013-04-11 | ルワタ エスポー オイ | Copper alloy and heat exchange tube |
-
2006
- 2006-03-23 DE DE102006013384A patent/DE102006013384B4/en active Active
-
2007
- 2007-03-17 CN CN2007800079346A patent/CN101395289B/en active Active
- 2007-03-17 ES ES07711975T patent/ES2370352T3/en active Active
- 2007-03-17 US US12/225,514 patent/US20090301701A1/en not_active Abandoned
- 2007-03-17 JP JP2009500752A patent/JP2009530581A/en not_active Withdrawn
- 2007-03-17 EP EP07711975A patent/EP1996739B1/en active Active
- 2007-03-17 AT AT07711975T patent/ATE518013T1/en active
- 2007-03-17 WO PCT/EP2007/002379 patent/WO2007110165A1/en active Application Filing
- 2007-03-17 DK DK07711975.8T patent/DK1996739T3/en active
Non-Patent Citations (1)
Title |
---|
See references of WO2007110165A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2716403A1 (en) | 2012-09-12 | 2014-04-09 | KME France SAS | Copper alloys for heat exchangers |
Also Published As
Publication number | Publication date |
---|---|
ATE518013T1 (en) | 2011-08-15 |
DK1996739T3 (en) | 2011-11-21 |
DE102006013384B4 (en) | 2009-10-22 |
CN101395289B (en) | 2011-10-12 |
CN101395289A (en) | 2009-03-25 |
WO2007110165A1 (en) | 2007-10-04 |
JP2009530581A (en) | 2009-08-27 |
US20090301701A1 (en) | 2009-12-10 |
EP1996739B1 (en) | 2011-07-27 |
ES2370352T3 (en) | 2011-12-14 |
DE102006013384A1 (en) | 2007-09-27 |
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