US3759323A - C-flow stacked plate heat exchanger - Google Patents

C-flow stacked plate heat exchanger Download PDF

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Publication number
US3759323A
US3759323A US00199928A US3759323DA US3759323A US 3759323 A US3759323 A US 3759323A US 00199928 A US00199928 A US 00199928A US 3759323D A US3759323D A US 3759323DA US 3759323 A US3759323 A US 3759323A
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US
United States
Prior art keywords
sheets
corrugations
rectangular area
shaped
triangular
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 - Lifetime
Application number
US00199928A
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English (en)
Inventor
D Keedy
E Mangus
H Dawson
W Hoftiezer
E Patton
J Grandfield
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Caterpillar Inc
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Caterpillar Tractor Co
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Filing date
Publication date
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Publication of US3759323A publication Critical patent/US3759323A/en
Assigned to CATERPILLAR INC., A CORP. OF DE. reassignment CATERPILLAR INC., A CORP. OF DE. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CATERPILLAR TRACTOR CO., A CORP. OF CALIF.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/08—Heating air supply before combustion, e.g. by exhaust gases
    • F02C7/10—Heating air supply before combustion, e.g. by exhaust gases by means of regenerative heat-exchangers
    • F02C7/105—Heating air supply before combustion, e.g. by exhaust gases by means of regenerative heat-exchangers of the rotary type
    • 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
    • F28D9/0062—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 spaced plates with inserted elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/355—Heat exchange having separate flow passage for two distinct fluids
    • Y10S165/356—Plural plates forming a stack providing flow passages therein
    • Y10S165/387—Plural plates forming a stack providing flow passages therein including side-edge seal or edge spacer bar

Definitions

  • a primary surface plate-type heat exchanger has sheets with triangular zones on opposite sides of a central rectangular area stacked alternately to provide a C- shaped flow path for two fluids. Corrugations in the sheet surface serve to direct fluid flow and to support adjacent sheets.
  • Another object is to arrange an efficient primary surface heat exchanger so that the respective flow paths of fluids through the exchanger are generally C-shaped.
  • Another object is a heat exchanger compatible with typical engine arrangements to reduce costly ducting requirements and consequently to reduce flow dynamic losses attributed to ducting.
  • FIG. 1 is an exploded perspective view of a group of plates
  • FIG. 2 is a sectional view taken in the direction of arrows II--II in FIG. 1 and FIG.
  • FIG. 3 is a sectional view taken in the direction of arrows III-III in FIG. 1 and FIG. 6;
  • FIG. 4 is a sectional view taken in the direction of arrows IV-IV in FIG. 1;
  • FIGS. 5 and 6 are plan views of an alternate arrangement of plates
  • FIG. 7 is a sectional view taken in the direction of arrows VII-VII in FIG. 5;
  • FIG. 8 is a partial plan view showing the stacked relationship of adjacent sheets detailed in FIGS. 5 and 6;
  • FIG. 9 is a sectional view taken in the direction of arrows IX-IX in FIG. 8;
  • FIG. 10 is a perspective view of an alternative form of two adjacent plates
  • FIG. 11 is a perspective view of a typical gas turbine engine showing one application of the subject invention.
  • FIG. 12 is a schematic diagram illustrating fluid flow paths through the heat exchanger arrangement presented in FIG. 11.
  • Sheet 2 contains three principal regions.
  • Sheet 2 has a corrugated central rectangular area 10 flanked by embossed triangular-shaped zones 12 and 14 on both sides.
  • a base 16 is coincident with one side of the central rectangular area 10, so that the sides 18 and 20 therefore form two of the six outer edges of Sheet 2.
  • Edge bars such as 22 and 24 attached to Sheet 2, 26 and 28 attached to Sheet 4, and 30 and 32 attached to Sheet 6, serve to space the sheets apart as well as seal the edges, thus preventing leakage and intermixing of fluids.
  • each triangular shaped zone such as 34 and 36 on Sheet 8, and 110 and 112 on Sheet 6, is not sealed by an edge bar, thereby forming apertures when Sheets 4, 6 and 8 are stacked.
  • FIGS. 2 and 3 Typical sections of the Sheets 2 and 4 are shown in FIGS. 2 and 3, respectively.
  • the Sheet 2 when the Sheet 2 is placed on the Sheet 4 to form one pair of plates in a stack, the sheets will be supported and spaced apart by the edge bars 26 and 28 and by the crowns 38 and the valleys 40 of corrugations in the central rectangular area of the sheets.
  • dimples or thimbles embossed into the sheets in the triangular side zones provide support and spacing for these areas of the sheets.
  • embossments 42 terminate short of the outer edge 44, thus providing a narrow flat margin 46 for the attachment of edge bars such as the bar 32.
  • FIGS. 5 and 6 An alternate arrangement, wherein the central rectangular area is flanked by two triangular shaped zones on each side, is presented in FIGS. 5 and 6.
  • edge bars 48, 50, 52, 54, 56 and 58 are attached to the Sheet 60.
  • the edge bars 62 and 64 are attached to the Sheet 66.
  • the Sheets and 66 are flat throughout the triangu lar side zones.
  • filler Sheets 68 are placed in the zone to provide structural support and directional guidance of flow. These plates may be placed loosely on the Sheet 60, or attached to the edge bar 54 other so that corrugations on adjacent sheets will contact, thereby providing structural support and preventing nesting of the sheets.
  • FIG. 11 A typical application of this invention is FIG. 11.
  • the ducts 88 and 88' connect on a compressor discharge collector 90 to a recuperator 84, while the duct 92 connects the recuperator 841 to a combustor collector 94.
  • a recuperator housing 96 with openings for ducts 88, 88', and 92, is placed on an exhaust collector 98.
  • the total recuperator system shown consists of two heat exchanger units, shown generally at 100 and 100' in schematic fashion in FIG. 12.
  • a typical application for this invention is on a gas turbine engine wherein heat energy available in the exhaust gas is recovered by the heat exchanger assembly and is transferred to combustion inlet air. It is the application that will be used to demonstrate the operation of this invention.
  • air flow 102 between the sheets 2 and 4 is directed by the locations of the entrance opening 104 and exit opening 106 provided between the two sheets.
  • edge bars 26 and 28 effectively seal all edges around the periphery of the sheets except for the aforementioned flow entry and exit apertures 102 and 104.
  • edge bars 30 and 32 effectively seal the appropriate edges as shown, thus creating the entrance opening 110 and the exit opening 112.
  • the location of the apertures encourages a natural, and highly desirable, counterdirectional flow path for the respective fluids across the central rectangular zone.
  • the corrugations in the central rectangular zone provide not only structural support, as previously mentioned, but also aid in flow control.
  • FIG. 1 The chevron pattern illustrated in FIG. 1, sectioned in FIGS. 2 and 3, and shown in stacked position in FIG.
  • the wavy corrugation pattern illustrated in FIGS. 5 and 6, has characteristics similar to the chevron pattern.
  • FIG. 10 Another alternative, the skewed straight passage, is shown in FIG. 10.
  • all three pat terns provide structural support, directional flow control, and mixing of the flow within the respective passage to encourage efficient heat transfer with minimum pressure loss.
  • the relatively thin patterned sheets outlined above may be fabricated from metal, ceramic, or other nonmetallic material without affecting overall performance.
  • materials such as silicon nitride, silicon carbide, and lithium-aluminasilicate currently being evaluated by the industry for high temperature applications, may be used to form the sheets of the heat exchanger disclosed herein.
  • the two outside edges of the triangular side zones may be varied in length, with respect to each other, to accommodate specific flow density and duct work requirements. Normally, the edge corresponding to compressor discharge air flow will be shorter than the adjacent leg corresponding to exhaust gas flow due to the greater density of the compressed, cooler compressor discharge air.
  • FIGS. 11 and 12 The particular flow path of fluid through a typical engine is presented in FIGS. 11 and 12.
  • Compressor discharge air is directed to the collector and subsequently routed by the ducts 88 and 88' to the inlet apertures 114, 114', 116, and 116' of the heat exchangers 84 and 84'.
  • the air then passes in generally C-shaped flow paths through the central rectangular areas receiving heat energy in the'known manner by transfer through the cor rugated sheets from hot exhaust gas.
  • the air, thus heated, is conducted from the discharge ports (or apertures) 118, 118, 120 and 120 of exchangers 84 and 84 to the combustor collectors by the ducts 92 and 92'.
  • the air then proceeds on through the engine in the conventional manner i.e., being heated further by the introduction of fuel into the air, subsequent ignition of the fuel thus forming a hot gas which in turn passes over one or more turbine rotors or stages transforming heat energy in the gas into mechanical energy in a rotating member, then discharging into the exhaust collector 98.
  • the relatively hot exhaust gas then passes into the recuperator housing 96 and 96', passing through the heat exchanger 84 and 84, giving up heat energy to the cooler combustor inlet air by transfer through the plates of said exchanger, and finally passing out of the housing into the atmosphere.
  • the structure of the present invention provides a compact, low profile, primary surface heat exchanger, compatible with typical engine arrangements, so that the respective fluid flow path of fluids through the exchanger describes a general C-shape.
  • a primary surface heat exchanger comprising first and second sheets alternately arranged to form a stack, said sheets each having a corrugated central rectangular area with opposite sides and ends, and triangularshaped areas having first and second edges and a base coincident with each of said rectangular area sides, portions of adjacent sheets abutting to provide structural support for said sheets and to maintain generally uniform flow paths between the sheets, said first and second edges of said triangular-shaped areas forming acute angles with the adjacent side of the rectangular area, side sheets defining therebetween a first C-shaped fluid flow path entering and exiting between said first edges of the triangular-shaped areas for travel across said rectangular area from side to side, and a second C-shaped fluid flow path immediately adjacent said first flow path in the stack and entering and exiting between said second edges for travel across said rectangular area from side to side in substantially counter-flow relation to said first flow path.
  • seal means attached to said first and second sheets to seal appropriate edges of said sheets and to form noncommunicating fluid passages and to provide structural support for said 6 stack.
  • central rectangular area further comprises corrugations which are chevron-shaped and have crowns and valleys arranged in ranks and aligned so that crowns of said corrugations in said first sheets contact valleys of said corrugations of said second sheets, thus providing structural support for said sheets.
  • central rectangular area further comprises corrugations which are wave-shaped and have crowns and valleys arranged in ranks and aligned so thatcrowns of said corrugations in said first sheets contact valleys of said corrugations of said second sheets, thus providing structural support for said sheets.
  • central rectangular area further comprises straight corrugations which are arranged in ranks and aligned so that said corrugations of said first sheet are skewed in relation ship to said corrugations of said second sheet.
  • the invention of claim 1 further comprising at least two triangular-shaped corrugated sheets coincident with the triangular-shaped areas, thus providing structural support for said sheets.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
US00199928A 1971-11-18 1971-11-18 C-flow stacked plate heat exchanger Expired - Lifetime US3759323A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19992871A 1971-11-18 1971-11-18

Publications (1)

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US3759323A true US3759323A (en) 1973-09-18

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US00199928A Expired - Lifetime US3759323A (en) 1971-11-18 1971-11-18 C-flow stacked plate heat exchanger

Country Status (6)

Country Link
US (1) US3759323A (enrdf_load_stackoverflow)
JP (2) JPS4863349A (enrdf_load_stackoverflow)
BE (1) BE791533A (enrdf_load_stackoverflow)
CA (1) CA959043A (enrdf_load_stackoverflow)
DE (1) DE2251286C3 (enrdf_load_stackoverflow)
GB (1) GB1400794A (enrdf_load_stackoverflow)

Cited By (58)

* Cited by examiner, † Cited by third party
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US3968834A (en) * 1975-02-07 1976-07-13 Caterpillar Tractor Co. Heat exchanger mounting for a turbine engine
US4030288A (en) * 1975-11-10 1977-06-21 Caterpillar Tractor Co. Modular gas turbine engine assembly
US4031953A (en) * 1974-12-23 1977-06-28 Caterpillar Tractor Co. Heat exchanger system and ducting arrangement therefor
US4072327A (en) * 1976-10-01 1978-02-07 Caterpillar Tractor Co. Slip joint between a gas turbine engine and a heat exchanger
US4090358A (en) * 1976-10-01 1978-05-23 Caterpillar Tractor Co. Heat exchanger support system
WO1980002321A1 (en) * 1979-04-19 1980-10-30 Caterpillar Tractor Co Heat exchanger
US4299200A (en) * 1977-12-12 1981-11-10 University Of Iowa Research Foundation Apparatus and method for collecting solar energy
US4338998A (en) * 1980-07-07 1982-07-13 Caterpillar Tractor Co. Low profile heat exchanger and method of making the same
US4343355A (en) * 1980-01-14 1982-08-10 Caterpillar Tractor Co. Low stress heat exchanger and method of making the same
US4346582A (en) * 1980-01-28 1982-08-31 Caterpillar Tractor Co. Method for flattening corrugated heat exchanger plates
US4346760A (en) * 1981-02-18 1982-08-31 Caterpillar Tractor Co. Heat exchanger plate having distortion resistant uniform pleats
WO1982002940A1 (en) * 1981-02-18 1982-09-02 Vidal Meza Gonzalo Dario Heat exchanger plate having distortion resistant uniform pleats
US4347896A (en) * 1979-10-01 1982-09-07 Rockwell International Corporation Internally manifolded unibody plate for a plate/fin-type heat exchanger
US4352393A (en) * 1980-09-02 1982-10-05 Caterpillar Tractor Co. Heat exchanger having a corrugated sheet with staggered transition zones
US4450705A (en) * 1981-02-18 1984-05-29 Caterpillar Tractor Co. Heat exchanger plate having distortion resistant uniform pleats
US4470454A (en) * 1982-08-19 1984-09-11 Avco Corporation Primary surface for compact heat exchangers
US4470453A (en) * 1982-08-19 1984-09-11 Avco Corporation Primary surface for compact heat exchangers
US4750327A (en) * 1985-08-16 1988-06-14 Mtu Connection apparatus between the outlet of a heat exchanger and the inlet of a combustion chamber of a gas turbine engine
US5060721A (en) * 1990-05-29 1991-10-29 Solar Turbines Incorporated Circular heat exchanger
US5065816A (en) * 1990-05-29 1991-11-19 Solar Turbines Incorporated Sealing system for a circular heat exchanger
US5082050A (en) * 1990-05-29 1992-01-21 Solar Turbines Incorporated Thermal restraint system for a circular heat exchanger
US5081834A (en) * 1990-05-29 1992-01-21 Solar Turbines Incorporated Circular heat exchanger having uniform cross-sectional area throughout the passages therein
US5333482A (en) * 1992-10-30 1994-08-02 Solar Turbines Incorporated Method and apparatus for flattening portions of a corrugated plate
FR2704310A1 (fr) * 1993-04-20 1994-10-28 Const Aero Navales Echangeur à plaques et barrettes à circuits croisés.
FR2727505A1 (fr) * 1994-11-28 1996-05-31 Packinox Sa Faisceau de plaques pour un echangeur thermique
WO1998048230A1 (en) * 1997-04-22 1998-10-29 Volvo Lastvagnar Ab Cross- and counterflow plate heat exchanger wherein the ports are provided with flanged, joined rims around part of their periphery
WO1999023435A1 (en) * 1997-11-05 1999-05-14 Solar Turbines Incorporated Improved method for making a recuperator cell
US5918368A (en) * 1997-08-27 1999-07-06 Solar Turbines, Inc. Method for making a recuperator cell
US6032730A (en) * 1996-09-12 2000-03-07 Mitsubishi Denki Kabushiki Kaisha Heat exchanger and method of manufacturing a heat exchanging member of a heat exchanger
US6192975B1 (en) * 1996-10-17 2001-02-27 Honda Giken Kogyo Kabushiki Kaisha Heat exchanger
US6357113B1 (en) 1999-11-04 2002-03-19 Williams International Co., L.L.C. Method of manufacture of a gas turbine engine recuperator
US6516874B2 (en) * 2001-06-29 2003-02-11 Delaware Capital Formation, Inc. All welded plate heat exchanger
US20030075308A1 (en) * 1999-12-27 2003-04-24 Tetsuo Abiko Plate fin type heat exchanger for high temperature
US6769479B2 (en) * 2002-06-11 2004-08-03 Solar Turbines Inc Primary surface recuperator sheet
US20050087330A1 (en) * 2003-10-28 2005-04-28 Yungmo Kang Recuperator construction for a gas turbine engine
US20050098309A1 (en) * 2003-10-28 2005-05-12 Yungmo Kang Recuperator assembly and procedures
US20100096101A1 (en) * 2006-08-18 2010-04-22 Braun Jason J Stacked/bar plate charge air cooler including inlet and outlet tanks
US20100218927A1 (en) * 2005-07-29 2010-09-02 Jim Cooper Heat exchange surface
US20100314088A1 (en) * 2009-06-11 2010-12-16 Agency For Defense Development Heat exchanger having micro-channels
US20110048687A1 (en) * 2009-08-26 2011-03-03 Munters Corporation Apparatus and method for equalizing hot fluid exit plane plate temperatures in heat exchangers
EP1884732A3 (de) * 2006-08-02 2011-12-28 Klingenburg GmbH Rotationswärmetauscher
CN101776410B (zh) * 2009-10-21 2012-05-16 上海锅炉厂有限公司 一种陶瓷材质耐高温蓄热元件盒
US20120305217A1 (en) * 2011-06-01 2012-12-06 Alstom Technology Ltd Heating element undulation patterns
WO2013093375A1 (fr) * 2011-12-21 2013-06-27 Elyt 3 Plaque pour échangeur thermique
US20170102193A1 (en) * 2015-10-07 2017-04-13 Arvos Inc. Alternating notch configuration for spacing heat transfer sheets
US20180056265A1 (en) * 2015-03-26 2018-03-01 Casale Sa Plate exchanger for chemical reactors with automatically weldable collectors
US20180274865A1 (en) * 2015-10-02 2018-09-27 Alfa Laval Corporate Ab Heat transfer plate and plate heat exchanger
CN109026397A (zh) * 2018-10-21 2018-12-18 至玥腾风科技投资集团有限公司 轴承润滑系统和微型燃气轮机发电机组
CN109057968A (zh) * 2018-10-21 2018-12-21 至玥腾风科技投资集团有限公司 微型燃气轮机发电机组
US20180372425A1 (en) * 2015-12-28 2018-12-27 The University Of Tokyo Heat exchanger
US10175006B2 (en) 2013-11-25 2019-01-08 Arvos Ljungstrom Llc Heat transfer elements for a closed channel rotary regenerative air preheater
CN109296465A (zh) * 2018-10-21 2019-02-01 至玥腾风科技投资集团有限公司 回热器、微型燃气轮机和微型燃气轮机发电机组
US10197337B2 (en) 2009-05-08 2019-02-05 Arvos Ljungstrom Llc Heat transfer sheet for rotary regenerative heat exchanger
US10378829B2 (en) 2012-08-23 2019-08-13 Arvos Ljungstrom Llc Heat transfer assembly for rotary regenerative preheater
US10914527B2 (en) 2006-01-23 2021-02-09 Arvos Gmbh Tube bundle heat exchanger
EP3465049B1 (en) 2016-06-03 2021-04-07 FlexEnergy Energy Systems, Inc. Counter-flow heat exchanger
US11035626B2 (en) * 2018-09-10 2021-06-15 Hamilton Sunstrand Corporation Heat exchanger with enhanced end sheet heat transfer
US11162737B2 (en) * 2019-04-29 2021-11-02 Hamilton Sundstrand Corporation Offset/slanted cross counter flow heat exchanger

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DE2616816C3 (de) * 1976-04-15 1983-12-01 Apparatebau Rothemühle Brandt + Kritzler GmbH, 5963 Wenden Heizblechpaket für regenerative Wärmetauscher

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US3183963A (en) * 1963-01-31 1965-05-18 Gen Motors Corp Matrix for regenerative heat exchangers
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Cited By (79)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4031953A (en) * 1974-12-23 1977-06-28 Caterpillar Tractor Co. Heat exchanger system and ducting arrangement therefor
US3968834A (en) * 1975-02-07 1976-07-13 Caterpillar Tractor Co. Heat exchanger mounting for a turbine engine
US4030288A (en) * 1975-11-10 1977-06-21 Caterpillar Tractor Co. Modular gas turbine engine assembly
US4072327A (en) * 1976-10-01 1978-02-07 Caterpillar Tractor Co. Slip joint between a gas turbine engine and a heat exchanger
US4090358A (en) * 1976-10-01 1978-05-23 Caterpillar Tractor Co. Heat exchanger support system
US4299200A (en) * 1977-12-12 1981-11-10 University Of Iowa Research Foundation Apparatus and method for collecting solar energy
WO1980002321A1 (en) * 1979-04-19 1980-10-30 Caterpillar Tractor Co Heat exchanger
EP0018745A1 (en) * 1979-04-19 1980-11-12 Caterpillar Tractor Co. Heat exchanger
US4347896A (en) * 1979-10-01 1982-09-07 Rockwell International Corporation Internally manifolded unibody plate for a plate/fin-type heat exchanger
US4343355A (en) * 1980-01-14 1982-08-10 Caterpillar Tractor Co. Low stress heat exchanger and method of making the same
US4346582A (en) * 1980-01-28 1982-08-31 Caterpillar Tractor Co. Method for flattening corrugated heat exchanger plates
US4338998A (en) * 1980-07-07 1982-07-13 Caterpillar Tractor Co. Low profile heat exchanger and method of making the same
US4352393A (en) * 1980-09-02 1982-10-05 Caterpillar Tractor Co. Heat exchanger having a corrugated sheet with staggered transition zones
WO1982002940A1 (en) * 1981-02-18 1982-09-02 Vidal Meza Gonzalo Dario Heat exchanger plate having distortion resistant uniform pleats
US4346760A (en) * 1981-02-18 1982-08-31 Caterpillar Tractor Co. Heat exchanger plate having distortion resistant uniform pleats
US4450705A (en) * 1981-02-18 1984-05-29 Caterpillar Tractor Co. Heat exchanger plate having distortion resistant uniform pleats
US4470454A (en) * 1982-08-19 1984-09-11 Avco Corporation Primary surface for compact heat exchangers
US4470453A (en) * 1982-08-19 1984-09-11 Avco Corporation Primary surface for compact heat exchangers
US4750327A (en) * 1985-08-16 1988-06-14 Mtu Connection apparatus between the outlet of a heat exchanger and the inlet of a combustion chamber of a gas turbine engine
US5065816A (en) * 1990-05-29 1991-11-19 Solar Turbines Incorporated Sealing system for a circular heat exchanger
US5082050A (en) * 1990-05-29 1992-01-21 Solar Turbines Incorporated Thermal restraint system for a circular heat exchanger
US5081834A (en) * 1990-05-29 1992-01-21 Solar Turbines Incorporated Circular heat exchanger having uniform cross-sectional area throughout the passages therein
US5060721A (en) * 1990-05-29 1991-10-29 Solar Turbines Incorporated Circular heat exchanger
US5333482A (en) * 1992-10-30 1994-08-02 Solar Turbines Incorporated Method and apparatus for flattening portions of a corrugated plate
FR2704310A1 (fr) * 1993-04-20 1994-10-28 Const Aero Navales Echangeur à plaques et barrettes à circuits croisés.
FR2727505A1 (fr) * 1994-11-28 1996-05-31 Packinox Sa Faisceau de plaques pour un echangeur thermique
EP0715144A1 (fr) * 1994-11-28 1996-06-05 Packinox Faisceau de plaques pour un échangeur thermique
US6032730A (en) * 1996-09-12 2000-03-07 Mitsubishi Denki Kabushiki Kaisha Heat exchanger and method of manufacturing a heat exchanging member of a heat exchanger
US6192975B1 (en) * 1996-10-17 2001-02-27 Honda Giken Kogyo Kabushiki Kaisha Heat exchanger
WO1998048230A1 (en) * 1997-04-22 1998-10-29 Volvo Lastvagnar Ab Cross- and counterflow plate heat exchanger wherein the ports are provided with flanged, joined rims around part of their periphery
US5918368A (en) * 1997-08-27 1999-07-06 Solar Turbines, Inc. Method for making a recuperator cell
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CA959043A (en) 1974-12-10
JPS4863349A (enrdf_load_stackoverflow) 1973-09-03
JPS54180350U (enrdf_load_stackoverflow) 1979-12-20
DE2251286A1 (de) 1973-05-24
DE2251286C3 (de) 1980-08-21
GB1400794A (en) 1975-07-23
BE791533A (fr) 1973-05-17
DE2251286B2 (enrdf_load_stackoverflow) 1979-12-13

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