US3547202A - Coaxial heat exchange apparatus with spacers - Google Patents
Coaxial heat exchange apparatus with spacers Download PDFInfo
- Publication number
- US3547202A US3547202A US791271*A US3547202DA US3547202A US 3547202 A US3547202 A US 3547202A US 3547202D A US3547202D A US 3547202DA US 3547202 A US3547202 A US 3547202A
- Authority
- US
- United States
- Prior art keywords
- hook
- elements
- passage
- tube
- heat exchange
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
- F23L15/04—Arrangements of recuperators
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/235—Heating the glass
- C03B5/237—Regenerators or recuperators specially adapted for glass-melting furnaces
-
- 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
- F28D21/0001—Recuperative heat exchangers
- F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
-
- 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
- F28D7/10—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 arranged one within the other, e.g. concentrically
- F28D7/103—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 arranged one within the other, e.g. concentrically consisting of more than two coaxial conduits or modules of more than two coaxial conduits
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
-
- 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
- Y10S165/051—Heat exchange having expansion and contraction relieving or absorbing means
- Y10S165/052—Heat exchange having expansion and contraction relieving or absorbing means for cylindrical heat exchanger
- Y10S165/06—Expandable casing for cylindrical heat exchanger
-
- 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
- Y10S165/901—Heat savers
Definitions
- Means are provided for maintaining a predetermined spacing between the passage-forming means and the inner tube which include a first element extending into the passage from one of the passage-forming means and inner tube and having a hook means formed thereon, and a second element extending into the passage from the other of said passage-forming means and inner tube and having an opening formed therein to receive and restrain or limit movement of the hook means.
- COAXIAL HEAT EXCHANGE APPARATUS WITH SPACERS This invention relates to heat exchangers in general and is particularly applicable to recuperators in which hot gases such as hot products of combustion or flue gases are used to preheat air or fluid fuel to be used in combustion.
- recuperators associated with heating furnaces such as those used in the glass industry, in which flue or exhaust gas is used to preheat combustion air for the furnace burners, although it will be apparent that the inventionwill have other uses and provide advantages in other fields.
- recuperators employed not only provide a high recovery of heat from flue gases, but also have long service lives with a minimum of maintenance and furnace shutdown, and further permit a reliable and constant heat exchange to be effected. This, however, is exceedingly difficult to achieve because of the extremely rigorous service conditions to which the recuperator heat exchange elements are subjected in operation.
- recuperators of the general type in connection with which this invention provides particular advantages i.e. metallic recuperators
- the heat exchange elements are exposed to hot waste or flue gases which often are of such high temperatures that they may be incandescent, and which usually have high velocities.
- the high temperatures alone have deteriorating effects on the metal of the walls of the heat exchange elements, and the relatively high velocities of the hot gases also tend to harmfully affect the metal by erosion.
- the flue gases usually also contain constituents which tend to corrode, erode or cause other deleterious chemical or metallurgical reactions on such metal, and this action is promoted by the high gas temperatures and velocities.
- these harmful efi'ects occur to the greatest extent on the portion of the heat exchange element initially facing or exposed to the flow of hot flue gas.
- recuperator heat exchange elements in which the inner and outer tubes of circular cross section define between them an annular space or passage which is clear except for spaced lugs intended to separate the tubes.
- the outer tube or the tube not directly exposed to the hot flue gases may not expand as much as the tube so facing the gases.
- This distortion may also result in restriction of airflow.
- Both of the above types of distortions may occur together.
- Such distortions and the resulting reduction of airflow tend to cause additional increases in the heating of the portions of the tube wall facing the stream of hot gas, which heating causes additional distortion of the wall and further restriction of the airflow between the inner and outer tubes, and so on, frequently continuing until the tube facing the hot flue gases fails, as by a buckling inwardly.
- Such distortions thus may cause failure of the heat exchange elements of the recuperator or require frequent preventative inspection or repair. In either case the result is costly shutdowns and loss of production.
- the invention features in a preferred embodiment a recuperator comprising an inner tube, an outer tube surrounding the inner tube and defining a passage therebetween, and means for maintaining the inner and outer tubes in a predetermined spaced relationship.
- the spacing means preferably comprises a plurality of hook elements attached to one of the inner and outer tubes and extending toward the other of the tubes in the passage, and a like plurality of associated hook-receiving elements attached to the other of said tubes.
- Each of the hook-receiving elements has an opening formed therein to receive and restrain or limit movement of a corresponding hook element in a direction transverse to the passageway.
- the corresponding hook-receiving elements may be advantageously arranged in a plurality of rows,-each row extending around an annular passageway.
- One or more of the hook elements in a first of the rows may open in a first direction while one or more hook elements in a second of the rows advantageously opens in a second or opposite direction to prevent disengagement of the hook elements from their corresponding receiving elements.
- the plurality of rows may be divided into a plurality of zones.
- the dimensions of the hook and hook-receiving elements in a first zone may be varied from the dimensions of the hook and hook-receiving elements in a second zone to accommodate the varying or different amounts of expansion and contraction that may occur in the first and second zones.
- the hook and hook-receiving elements in each row are preferably positioned in a staggered relationship around the passage with respect to the hook and hook-receiving elements in adjacent rows to provide a more evenly distributed support relationship between the inner and outer tubes.
- each of the hook-receiving elements may be formed sufficiently larger than a hook means received therein to permit a sliding engagement in a direction transverse to the passage to accommodate the difference in outward expansion and inward contraction of the inner and outer tubes.
- the opening in a hook-receiving element may be elongated in one or more directions in order to permit sliding engagement in more than one direction in the event that the difference in expansion and contraction of the inner and outer tubes causes the tubes to move in more than one direction with respect to each other.
- the hook elements are shown as elongate bars having a flange extending vertically "therefrom.
- the elongate bars may be attached to the inner 'tube as shown in the drawing or attached to the outer tube. If the hot flue gases are flowing through the inner tube then it is advantageous to attach the elongate bar portion of the hook element to the inner tube.
- the inner tube has a tendency to buckle inwardly in some recuperator constructions and will thus more support or reinforcement will be provided by the elongate bar portion.
- the hook-receiving elements as shown in the drawing are substantially U-shaped brackets attached to the outer tube, although their attachment to the inner tube to receive hook elements attached to the outer tube may be effected if so desired.
- hook elements and hookvreceiving elements shown has been found to be particularly advantageous, these configurations are not meant to be limiting.
- the hook-receiving element in order to provide the support desired (against buckling of the inner tube it is not necessary that the hook-receiving element have a completely enclosed opening.
- a hook-receiving element may be formed in the same shape as a hook element and disposed along one tube in a position to engage a hook element supported from the other tube.
- the passage between the inner and outer tube may be closed at one end by a transverse partition joining the tubes to form in cooperation with the hook and hook-receiving elements a substantially unitary structure.
- FIG. 1 is a vertical section through the axis of a recuperator embodying the teachings of this invention
- FIG. 2 is a side elevational view of an inner shell of the recuperator illustrated in FIG. 1;
- FIG. 3 is a side elevational view of an outer shell of the recuperator illustrated in FIG. I;
- FIG. 4 is an enlarged side elevational view of a hook ele- "ment and hook-receiving element embodying the teachings of this invention
- FIG. 5 is a plan view of the elements illustrated in FIG. 4;
- FIG. 6 illustrates an alternate configuration of spacing ele- 'ments embodying the teachings of this invention.
- FIG. 1 a recuperator which comprises an inner tube or shell 10 and an outer tube or shell 12, which may be constructed from steel or other suitable metals.
- a metal expansion bellows 14 is welded to the outer tube 12 through a reinforcing band 16 and to the top of an inlet chamber l8 by another band 17.
- An outlet chamber 20 including a transverse partition ll closes the passage between and joins the tubes 10, 12 at one end.
- the walls of the inlet chamber 18 and the expansion bellows l4 combine to connect the other ends of the tubes l0, 12 to provide a unitary structure.
- a space I3 is provided in the insulating side wall 46 to accommodate expansion 'of the outer tube 12 and insulation 46.
- the bellows 14 operates in a manner well known in the art to accommodate the greater axial expansion of the inner tube 10 over that of the outer tube 12 while still maintaining the inlet chamber, outlet chamber and the interconnecting heat exchange passage of the recuperator sealed.
- the inlet chamber 18, receives combustion air for heating via an inlet connection 22 connected to a forced draft blower 24 by a conduit 28.
- the outlet chamber 20 is connected by means not shown to supply combustion air to the burners in the furnace.
- the chambers 18 and 20 are constructed to surround each end of the tubes 10 and 12 to act as constant pressure chambers for the supply and release of air after it has been heated by the combustion gases passing in heat exchange relationship with the inner tube It The hot flue gases escaping through the interior of the tube 10 heat the inner surface of the tube 10 causing heat to radiate from the outer surface of the tube 10 to air flowing through the annular passage formed between the outer tube 12 and the inner tube 10.
- a plurality of rows of spacing means generally indicated at 50 are provided for maintaining the inner shell 10 within a predetermined range of distance from the outer shell 12 to prevent buckling of the inner shell inwardly and to prevent a restriction of the annular passage formed between the two shells.
- the spacer means 50 which includes a hook element 51 and a hook-receiving element 52.
- the hook element 51 comprises an elongate bar portion 51a having a flange projection 51b extending vertically therefrom.
- the hook-receiving element 52 comprises a U-shaped bracket. The elements are attached to the inner and outer shells, respectively, preferably by welding.
- the dimensions of the projecting flange 51b are such that a limited sliding engagement is permitted between the opening 52a and the flange 51b to permit the inner and outer tubes 10, 12 to expand or contract at different rates yet maintain the passage formed therebetween within a predetermined range of sizes desired for the passage of combustion air therethrough. It will be noted that expansion and contraction in the embodiment illustrated in FIGS. 4 and 5 is permitted not only transverse of the passage, or movement of the tubes 10 and 12 toward and away from each other, but also for differential ex pansion which may take place within one of the tubes alone. Movement is permitted for a limited distance in a side direction or laterally with respect to the passage. In addition,
- FIG. 6 there is illustrated another embodiment of a spacing means 500 including a hook element 51 formed in the same manner as that illustrated in FIGS. 4 and 5, and a hook-receiving element 53 which may be formed simply as another book element which cooperates with the hook element 51 to maintain the spacing desired.
- This arrangement permits an accommodation of three-dimensional differences in expansion and contraction rates of the two structural wall members, and yet does not have a completely enclosed opening as that afforded by the U-bracket 52 in FIGS. 4 and 5.
- the elongate bar section of a hook element 53 may afford a reinforcing of the outer tube 12. Since the opening formed in the hook-receiving element 53 is open on one side the difficulties in registering a hook element and hookreceiving element may be reduced during assembly of the. recuperator in certain instances.
- the hook elements 51 are advantageously attached to the exterior of the inner tube 10 and arranged in rows around the circumference thereof. Each hook element 51 in each row may be located in a staggered position with respect to the hook elements in adjacent rows so that a more evenly distributed support relationship between the inner and outer tubes is provided.
- the elongate bar portion of hook elements 51 may extend even farther from the outer surface of the inner tube 10 since the combustion air in Zone 3 is even warmer than it was in Zone 2. While the dimension in this instance being varied is the outward extension of the hook elements 51, it will be appreciated that other dimensions of either the hook element 51 or the hook-receiving element 52 may be varied to accommodate the different expansion and contraction rates in different zones or areas of the recuperator.
- the height dimension of the elongate bar portions 51a of the hook elements 51 limit the amount of travel of the shells toward each other and maintains a predetermined minimum spacing or distance between the shells.
- the above dimensions may be varied to determine maximum and minimum spacings, before and after expansion or contraction, between different zones to control passage size in response to temperature changes, to prevent buckling away from each other, and to enable a regulated heat exchange.
- the dimensions or size of the chamber formed between the inner and outer tubes may be maintained within a predetermined range to permit the heat exchange between the flue gases and a predetermined amount of combustion air flowing through the chamber or passage, the maintaining of a predetermined airflow thus assisting in preventing a local hot spot from increasing in temperature through a restriction of a passage or chamber.
- the hook-receiving elements 52 are attached to the interior of the outer shell and are positioned to register with and receive the hook elements 51 located on the exterior of the inner tube.
- the larger outer shell or tube 12 has a like plurality of rows of inwardly extending hook-receiving elements or U-shaped brackets 52 positioned to register with and receive the hooked portions of the hook elements 51 extending outwardly from the inner shell.
- the outer shell When the rows of U-brackets 52 reach a position just above their corresponding rows of hook spacers 51, the outer shell is rotated to bring each U-bracket directly above its corresponding hook spacer. The outer shell is then lowered farther bringing the upwardly opening hook portion of a spacer into a re gistering or hooked position with its corresponding U-bracket. The second section of the inner shell, including the third or upper zone or all of the hook spacers which open downwardly, is then lowered into the upper part of the outer shell. The hook spacers are disposed between the Ubrackets to permit the sliding entry.
- heat exchange apparatus which includes a first structural member and a second structural member subjected to varying temperatures and defining a passageway therebetween. Means are provided for maintaining the spacing between the first and second members within a predetermined range to control the size of the passageway and provide support from one member to the other.
- the spacing means includes a first element extending from the first member toward the second member and having a hook means formed thereon, and a second element extending from a second member toward the first member and having an opening formed therein to receive and restrain movement of the hook means in response to varying temperature conditions. While the apparatus has been described in connection with and has particularly advantageous usefulness with a metal recuperator, it should be kept in mind that the invention may be applicable to other heat exchange installations that are within the scope of the description herein.
- a second structural member coofiarating with the first structural member to form a chamber for receiving one of the substance or the heat removal-supplying means; and means for f maintaining the spacing between the first and second structural members within a predetermined range to control the size of the chamber and provide a supporting relationship between the structural members including a hook element extending from one of the structural members, and an associated hook-receiving element extending from the other of the strucftural members having an opening formed therein to receive and restrain or limit movement of the hook element.
- ' f opening formed in the hook-receiving element may be elongated in any direction to permit a sliding engagement with said 2 I hook element to accommodate different amounts of contrac 1 tion and expansion of said structural members.
- a recuperator for providing a heat exchange between hot gases which may result from exhaust products from a comi bustion furnace and relatively cool gases which may be used to f supply combustion air to burners in the combustion furnace comprising an inner tube; means forming an air passage around said inner tube; and means for maintaining a predeter- 'mined spacing between said passage forming means and said inner tube including a first element extending into said "passage from one of said passage forming means and inner 'tube and having a hook means formed thereon, and a second .element extending into said passage from the other of said passage forming means and said inner tube and having an opening formed therein to receive and restrain movement of said hook means; a plurality of rows of pairs of first and I second elements being spaced from each other along said .inner tube; the hook means of a first element in a first of said rows opening in a first direction, the hook means of a first element in a second of said rows opening in a second direction to prevent disengagement of said hook means from said
- a recuperator as defined in claim in which the passage between said inner and outer tubes is closed at one end by a transverse partition joining said tubes, ..and is closed at the other end of-said tubes by means including an expansion bellows; the closure of both'ends in cooperation with said hook and hook-receiving elements providing a unitary structure which can accommodate different expansions and contractions of said tubes both in the direction of and transverse to said passage.
- a recuperator comprising an inner tube; an outer tube surrounding said inner tube and defining a passage therebetween; and means for maintaining said inner and outer tubes in a predetermined spaced relationship comprising a plurality of hook elements attached to one of said inner and outer tubes and extending toward the other of said tubes in said passage and a like plurality of associated hook-receiving elements attached to the other of said tubes and extending toward said one tube in said passage, each of said hook-receiving elements having an opening formed therein to receive and restrain movement of a corresponding hook element in a direction transverse to said passageway; said corresponding hook and hook-receiving elements being arranged in a plurality of rows, each row extending around said passageway; said plurality of rows being divided into a plurality of zones, the dimensions of one of said hook and hook-receiving elements of all the elements in a first zone being varied from the dimensions of one of said hook and hook-receiving elements of all the elements in a second zone to accommodate varying amounts of expansion and contraction between said
- a recuperator as defined in claim 6 in which said hook elements are elongate bars having a flange extending vertically therefrom and in which said elongate bars are attached to said inner tube to reinforce said inner tube.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Air Supply (AREA)
Description
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US79127169A | 1969-01-15 | 1969-01-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3547202A true US3547202A (en) | 1970-12-15 |
Family
ID=25153187
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US791271*A Expired - Lifetime US3547202A (en) | 1969-01-15 | 1969-01-15 | Coaxial heat exchange apparatus with spacers |
Country Status (7)
Country | Link |
---|---|
US (1) | US3547202A (en) |
BE (1) | BE744488A (en) |
CA (1) | CA926858A (en) |
FR (1) | FR2028396B1 (en) |
GB (1) | GB1227306A (en) |
NL (1) | NL164127C (en) |
SE (1) | SE362293B (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3870099A (en) * | 1972-05-19 | 1975-03-11 | Atomic Energy Commission | Seal assembly |
US3955552A (en) * | 1974-04-18 | 1976-05-11 | Heat Research Corporation | Heater for large flows at low pressure losses |
US3965885A (en) * | 1974-04-18 | 1976-06-29 | Heat Research Corporation | Heater for large flows at low pressure losses |
US4111107A (en) * | 1977-01-27 | 1978-09-05 | Engleke Donald J | Double walled smokestack apparatus |
US4143708A (en) * | 1977-10-11 | 1979-03-13 | Owens-Corning Fiberglas Corporation | Salvaging and restraining recuperator from collapse |
US4219345A (en) * | 1977-10-11 | 1980-08-26 | Owens-Corning Fiberglas Corporation | Salvaging and restraining recuperator from collapse |
US4291752A (en) * | 1978-10-26 | 1981-09-29 | Bridgnell David G | Heat exchanger core attachment and sealing apparatus and method |
US20080041563A1 (en) * | 2003-09-08 | 2008-02-21 | Graham Robert G | Heat exchangers with novel ball joints and assemblies and processes using such heat exchangers |
US20140345828A1 (en) * | 2012-02-13 | 2014-11-27 | Aktiebolaget K.A. Ekstroms & Son | Heat Exchanger Adapted for the Production of Carbon Black |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1073417A (en) * | 1951-12-13 | 1954-09-24 | Improvements to end plate systems and machines fitted with these systems | |
GB744422A (en) * | 1952-05-29 | 1956-02-08 | Babcock & Wilcox Ltd | Improvements in gas-heating units |
DE1008856B (en) * | 1954-01-22 | 1957-05-23 | Walter Hartwig | Metal recuperator with ribbed inner tube |
US3007681A (en) * | 1957-10-04 | 1961-11-07 | John D Keller | Recuperators |
FR1255511A (en) * | 1960-01-28 | 1961-03-10 | Equip Thermiques Et De Recuper | Heat recovery unit for high temperature furnaces |
-
1969
- 1969-01-15 US US791271*A patent/US3547202A/en not_active Expired - Lifetime
-
1970
- 1970-01-13 GB GB1227306D patent/GB1227306A/en not_active Expired
- 1970-01-14 SE SE00415/70A patent/SE362293B/xx unknown
- 1970-01-14 NL NL7000477.A patent/NL164127C/en active
- 1970-01-15 FR FR7001382A patent/FR2028396B1/fr not_active Expired
- 1970-01-15 CA CA072245A patent/CA926858A/en not_active Expired
- 1970-01-15 BE BE744488D patent/BE744488A/en unknown
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3870099A (en) * | 1972-05-19 | 1975-03-11 | Atomic Energy Commission | Seal assembly |
US3955552A (en) * | 1974-04-18 | 1976-05-11 | Heat Research Corporation | Heater for large flows at low pressure losses |
US3965885A (en) * | 1974-04-18 | 1976-06-29 | Heat Research Corporation | Heater for large flows at low pressure losses |
US4111107A (en) * | 1977-01-27 | 1978-09-05 | Engleke Donald J | Double walled smokestack apparatus |
US4143708A (en) * | 1977-10-11 | 1979-03-13 | Owens-Corning Fiberglas Corporation | Salvaging and restraining recuperator from collapse |
US4219345A (en) * | 1977-10-11 | 1980-08-26 | Owens-Corning Fiberglas Corporation | Salvaging and restraining recuperator from collapse |
US4291752A (en) * | 1978-10-26 | 1981-09-29 | Bridgnell David G | Heat exchanger core attachment and sealing apparatus and method |
US20080041563A1 (en) * | 2003-09-08 | 2008-02-21 | Graham Robert G | Heat exchangers with novel ball joints and assemblies and processes using such heat exchangers |
US7762317B2 (en) * | 2003-09-08 | 2010-07-27 | Heat Transfer International, Inc. | Heat exchangers with novel ball joints and assemblies and processes using such heat exchangers |
US20140345828A1 (en) * | 2012-02-13 | 2014-11-27 | Aktiebolaget K.A. Ekstroms & Son | Heat Exchanger Adapted for the Production of Carbon Black |
JP2015507170A (en) * | 2012-02-13 | 2015-03-05 | プロメテウス テクノロジーズ ゲーエムベーハーPrometheus Technologies Gmbh | Heat exchanger suitable for carbon black production |
Also Published As
Publication number | Publication date |
---|---|
GB1227306A (en) | 1971-04-07 |
FR2028396A1 (en) | 1970-10-09 |
DE2001094B2 (en) | 1972-09-28 |
FR2028396B1 (en) | 1974-08-09 |
NL164127B (en) | 1980-06-16 |
DE2001094A1 (en) | 1970-07-16 |
BE744488A (en) | 1970-07-15 |
CA926858A (en) | 1973-05-22 |
NL164127C (en) | 1980-11-17 |
NL7000477A (en) | 1970-07-17 |
SE362293B (en) | 1973-12-03 |
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