US20080271880A1 - Coiled Heat Exchanger Having Different Tube Diameters - Google Patents

Coiled Heat Exchanger Having Different Tube Diameters Download PDF

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Publication number
US20080271880A1
US20080271880A1 US11/997,292 US99729206A US2008271880A1 US 20080271880 A1 US20080271880 A1 US 20080271880A1 US 99729206 A US99729206 A US 99729206A US 2008271880 A1 US2008271880 A1 US 2008271880A1
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US
United States
Prior art keywords
tube
heat exchanger
different
tubes
tube group
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.)
Abandoned
Application number
US11/997,292
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English (en)
Inventor
Manfred Steinbauer
Manfred Schoenberger
Christiane Kerber
Markus Hammerdinger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Linde GmbH
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Linde GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Linde GmbH filed Critical Linde GmbH
Assigned to LINDE AKTIENGESELLSCHAFT reassignment LINDE AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SCHOENBERGER, MANFRED, HAMMERDINGER, MARKUS, KERBER, CHRISTIANE, STEINBAUER, MANFRED
Publication of US20080271880A1 publication Critical patent/US20080271880A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
    • F28D7/024—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • 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
    • F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids

Definitions

  • the invention relates to a coiled heat exchanger having a plurality of tubes which are wound around a core tube, having a casing which delimits an outer space around the tubes.
  • Natural gas is continuously liquefied in large quantities in LNG baseload systems. Most of the time, liquefaction of the natural gas is accomplished by heat exchange with a coolant in coiled heat exchangers. However, many other applications of coiled heat exchangers are also known.
  • a coiled heat exchanger In a coiled heat exchanger, several layers of tubes are spirally wound on a core tube. A first medium is piped through the inside of at least one portion of the tubes, and this medium exchanges heat with a second medium flowing in the outer space between the tubes and a surrounding casing. The tubes are merged into several groups on the upper ends of the heat exchanger and fed out of the outer space in a bundled manner.
  • Tubes with uniform cross sections are used in the case of known coiled heat exchangers.
  • the invention is based on the objective of further optimizing these types of coiled heat exchangers, in particular in terms of weight, number of tubes, process conditions and/or operating safety.
  • a “tube group” in this case is composed of at least one, preferably a plurality of tubes.
  • the tubes in a tube group may, but must not, be adjacent in the tangential and/or radial direction.
  • the two tube groups are preferably located in the same tube bundle.
  • a “tube bundle” describes the entirety of an inner component of a coiled heat exchangers comprised of core tube, the tube layers coiled thereon and intermediate auxiliary means such as connecting pieces etc., which are produced by the coiling process.
  • a coiled heat exchanger has one or more of these types of tube bundles within a casing.
  • the tube geometry can be adapted better to specific process-related requirements.
  • These types of specific requirements can consist for example of different thermal properties of various process fractions, which flow through the corresponding tube groups, or even of the different lengths of tubes in different tube layers.
  • Another advantage is that the wall thicknesses can be adapted to different process pressures of the media flowing through the tubes and thereby reduce the weight.
  • “Different” should be understood in this case as a deviation in the corresponding dimension, which is considerably greater than the manufacturing tolerance in effect for it.
  • a parameter is considered “different” from another one if its value deviates by at least 2%, preferably at least 5%.
  • the inner diameter in particular can be varied, preferably with the outer diameter remaining the same.
  • the pressure drop along the tubes can be influenced by varying the inner diameter.
  • two different tube groups can be optimized independent of one another for two different process fractions. Basically, this can be accomplished with the same wall thickness, i.e., the two tube groups also have different outer diameters.
  • all tubes can have the same outer diameter; then only the wall thickness and the inner diameter vary.
  • a difference in the wall thickness can be realized when using the same material or even when using different materials (for example aluminum and steel) for the two tube groups.
  • different materials for example aluminum and steel
  • the use of different materials is described in detail in German Patent Application 102005036413.6.
  • the two tube groups can be arranged in the same or in different tube layers. Of course, more than two tube groups with different dimensions can also be provided. For example, a first and a second tube group can be arranged within a first tube layer and a third tube group can be arranged in a second tube layer.
  • two tube groups have different wall thicknesses, particularly to adapt to process fractions having different pressures, for which the two tube groups are intended.
  • a lower wall thickness is used for the tube group with the lower design pressure thereby reducing weight.
  • either the inner diameter or the outer diameter of the two tube groups can be different; alternatively, both diameters can be different.
  • the first tube group includes for example a first section of tubes and the second tube group another one, for example a section of the same tubes adjacent to the first section.
  • the invention relates to the application of this type of heat exchanger for executing an indirect heat exchange between a hydrocarbonaceous stream and at least one heat fluid or cold fluid.
  • the hydrocarbonaceous stream in this case is formed by natural gas for example.
  • the hydrocarbonaceous stream is liquefied, cooled, heated and/or vaporized during the indirect heat exchange.
  • the heat exchanger is preferably used for natural gas liquefaction or natural gas vaporization.
  • FIGURE illustrates an embodiment of a coiled heat exchanger in accordance with the principles of the present invention.
  • LNG liquefied natural gas
  • the coiled heat exchanger in this case features a single tube bundle with three tube groups.
  • the tubes in the tube groups are spirally wound on a common core tube in an alternating manner in different layers.
  • the tube coiling corresponds to the generally known principle of a coiled heat exchanger; as a result, the geometric arrangement is not depicted in the schematic drawing.
  • the tube groups in this example are divided by process streams.
  • the natural gas 2 flows through the tubes of a first tube group 7 ; one of the two high-pressure refrigerants 5 , 6 flows through each of the tubes of a second or third tube group 8 , 9 .
  • the high-pressure refrigerants in this case are guided from the bottom to the top, i.e., in parallel flow with the natural gas.
  • the low-pressure refrigerant 4 flows from the top to the bottom, i.e., in the opposite direction of flow of the natural gas, through the outer space of the tubes and is vaporized in the process. Vaporized low-pressure refrigerant 10 is withdrawn again from the outer space at the lower end of the heat exchanger.
  • Natural gas 2 120 bar Low-pressure refrigerant 4 15 bar First high-pressure refrigerant 5 60 bar Second high-pressure refrigerant 6 60 bar
  • the tubes are manufactured of a light metal material, for example aluminum or an aluminum alloy, and have different wall thicknesses depending on the tube group. In this case, the outer diameters of the tubes in all tube layers are the same.
  • the wall thicknesses are as follows in a first variant which was optimized in term of weight:
  • Tube group 7 1.4 mm
  • Tube groups 8 and 9 0.9 mm
  • the wall thicknesses were optimized with respect to the thermal and hydraulic design and with respect to a tube bundle that is structured as homogenously as possible, wherein process-related parameters (e.g., predetermined maximum pressure drops in the individual process streams) were to be complied with.
  • process-related parameters e.g., predetermined maximum pressure drops in the individual process streams
  • Tube group 7 1.4 mm
  • Tube groups 8 and 9 1.2 mm

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)
  • Separation By Low-Temperature Treatments (AREA)
US11/997,292 2005-07-29 2006-07-06 Coiled Heat Exchanger Having Different Tube Diameters Abandoned US20080271880A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005036414.4 2005-07-29
DE102005036414 2005-07-29
PCT/EP2006/006626 WO2007014618A1 (de) 2005-07-29 2006-07-06 Gewickelter wärmetauscher mit verschiedenen rohrdurchmessern

Publications (1)

Publication Number Publication Date
US20080271880A1 true US20080271880A1 (en) 2008-11-06

Family

ID=36956024

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/997,292 Abandoned US20080271880A1 (en) 2005-07-29 2006-07-06 Coiled Heat Exchanger Having Different Tube Diameters

Country Status (7)

Country Link
US (1) US20080271880A1 (pt)
CN (1) CN101233378B (pt)
AU (1) AU2006275171B2 (pt)
BR (1) BRPI0614910A2 (pt)
NO (1) NO20081063L (pt)
RU (1) RU2402733C2 (pt)
WO (1) WO2007014618A1 (pt)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100269521A1 (en) * 2009-04-28 2010-10-28 Steven Clay Moore Air-conditioning with dehumidification
US20120047940A1 (en) * 2011-05-03 2012-03-01 General Electric Company Low charge heat exchanger in a sealed refrigeration system
US20130333868A1 (en) * 2012-06-13 2013-12-19 Shiblee S. M. Noman Secondary heat exchanger for a furnace heat exchanger
US20220087063A1 (en) * 2020-09-16 2022-03-17 Cooler Master Co., Ltd. Expansion card assembly and liquid-cooling device
US11448467B1 (en) * 2018-09-28 2022-09-20 Clean Energy Systems, Inc. Micro-tube metal matrix heat exchanger and method of manufacture

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2012201620B2 (en) * 2011-04-14 2015-04-30 Linde Aktiengesellschaft Heat exchanger with sections
DE102012101276A1 (de) * 2012-02-17 2013-08-22 AZ-Pokorny Trade s.r.o. Wärmetauscher für eine Heizungsanlage oder ein Wärmeversorgungssystem
CN108278801A (zh) * 2018-01-25 2018-07-13 海信（山东）空调有限公司 一种冷凝器及空调器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2574116A (en) * 1944-05-25 1951-11-06 Lavigne Jean Loumiet Et Series distillation process
US3788281A (en) * 1972-03-27 1974-01-29 Shell Oil Co Process and waste-heat boiler for cooling soot-containing synthesis gas
US4316502A (en) * 1980-11-03 1982-02-23 E-Tech, Inc. Helically flighted heat exchanger
US4792661A (en) * 1985-03-16 1988-12-20 Durr Dental Gmbh & Co Kg Electric heating apparatus for regulating the temperature of a plurality of liquids
US5009262A (en) * 1990-06-19 1991-04-23 General Motors Corporation Combination radiator and condenser apparatus for motor vehicle

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1078145B (de) * 1957-10-23 1960-03-24 Adam Elmer Dipl Ing Rohrschlangenwaermetauscher mit mehreren schraubenlinienfoermig gewundenen und um eine mittlere Tragsaeule angeordneten Rohrschlangen
CH571202A5 (pt) * 1973-09-07 1975-12-31 Bertrams Ag
ATE311580T1 (de) * 2002-05-27 2005-12-15 Air Prod & Chem Wärmetauscher mit gewickelten rohrschlangen
CN2639824Y (zh) * 2003-08-06 2004-09-08 粟翔 管旋式热交换器
US7322404B2 (en) * 2004-02-18 2008-01-29 Renewability Energy Inc. Helical coil-on-tube heat exchanger

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2574116A (en) * 1944-05-25 1951-11-06 Lavigne Jean Loumiet Et Series distillation process
US3788281A (en) * 1972-03-27 1974-01-29 Shell Oil Co Process and waste-heat boiler for cooling soot-containing synthesis gas
US4316502A (en) * 1980-11-03 1982-02-23 E-Tech, Inc. Helically flighted heat exchanger
US4792661A (en) * 1985-03-16 1988-12-20 Durr Dental Gmbh & Co Kg Electric heating apparatus for regulating the temperature of a plurality of liquids
US5009262A (en) * 1990-06-19 1991-04-23 General Motors Corporation Combination radiator and condenser apparatus for motor vehicle

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100269521A1 (en) * 2009-04-28 2010-10-28 Steven Clay Moore Air-conditioning with dehumidification
US20120047940A1 (en) * 2011-05-03 2012-03-01 General Electric Company Low charge heat exchanger in a sealed refrigeration system
US20130333868A1 (en) * 2012-06-13 2013-12-19 Shiblee S. M. Noman Secondary heat exchanger for a furnace heat exchanger
US11448467B1 (en) * 2018-09-28 2022-09-20 Clean Energy Systems, Inc. Micro-tube metal matrix heat exchanger and method of manufacture
US20220087063A1 (en) * 2020-09-16 2022-03-17 Cooler Master Co., Ltd. Expansion card assembly and liquid-cooling device
US11818865B2 (en) * 2020-09-16 2023-11-14 Cooler Master Co., Ltd. Expansion card assembly and liquid-cooling device

Also Published As

Publication number Publication date
CN101233378B (zh) 2010-08-04
BRPI0614910A2 (pt) 2011-04-19
AU2006275171B2 (en) 2011-05-19
WO2007014618A1 (de) 2007-02-08
AU2006275171A1 (en) 2007-02-08
RU2402733C2 (ru) 2010-10-27
RU2008107273A (ru) 2009-09-10
NO20081063L (no) 2008-02-28
CN101233378A (zh) 2008-07-30

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AS Assignment

Owner name: LINDE AKTIENGESELLSCHAFT, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:STEINBAUER, MANFRED;SCHOENBERGER, MANFRED;KERBER, CHRISTIANE;AND OTHERS;REEL/FRAME:021390/0656;SIGNING DATES FROM 20080202 TO 20080211

STCB Information on status: application discontinuation

Free format text: ABANDONED -- AFTER EXAMINER'S ANSWER OR BOARD OF APPEALS DECISION