US3499484A - Two-fluid heat exchanger - Google Patents
Two-fluid heat exchanger Download PDFInfo
- Publication number
- US3499484A US3499484A US682002A US3499484DA US3499484A US 3499484 A US3499484 A US 3499484A US 682002 A US682002 A US 682002A US 3499484D A US3499484D A US 3499484DA US 3499484 A US3499484 A US 3499484A
- Authority
- US
- United States
- Prior art keywords
- heat exchanger
- members
- coils
- fluid
- modular
- 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
- 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
- F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
- F28F9/0221—Header boxes or end plates formed by 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
- 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
- F28D7/04—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 spirally coiled
-
- 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
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
-
- 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
- Y10S165/40—Shell enclosed conduit assembly
- Y10S165/401—Shell enclosed conduit assembly including tube support or shell-side flow director
- Y10S165/416—Extending transverse of shell, e.g. fin, baffle
- Y10S165/421—Disc and donut plates
Definitions
- This invention relates to a two-fluid heat exchanger comprising modular members each in the form of two superimposed plane spirals including a plate member therebetween, union means for connecting said spirals to an external circuit for a first fluid, an envelope enclosing said modular members and in communication with an external circuit for a second fluid.
- This invention relates to a heat exchanger.
- the main object of this invention is that of providing a heat exchanger formed modular members, from the assembling which a wide range of heat exchangers may be obtained, adaptable to the most varied of requirements.
- Another object of this invention is that of providing a heat exchanger formed of modular members in which the heat exchanger surfaces are particulraly compact, so that the structure of the heat exchanger shall be of minimum encumbrance.
- Another object of this invention is that of providing a heat exchanger formed of assemblable modular members which, once dimensioned for a particular use, may be easily adapted to different conditions of use.
- a further object of this invention is that of providing a heat exchanger formed of modular members, which does not involve the use of parts of diificult manufacture or maintenance.
- a heat exchanger characterized in that it comprises circuit means for a first fluid, said circuit means being substantially in the form of at least two superimposed plane spirals, a discoid member interposed between said spirals, union means for connect ing said spirals to an external circuit, feeding and conveying means for a second exchange fluid, said feeding and conveying means being situated externally to said spirals.
- FIG. 1 shows a possible embodiment of a modular member according to the invention
- FIG. 2 shows, the vertical section, a demountable heat exchanger formed by the assembling of three modular members
- FIG. 3 shows, diagrammatically and in perspective, the heat exchanger of FIG. 2;
- FIG. 4 shows an exploded view of members forming the union of a modular member with an externally connected manifold
- FIG. 5 shows the same union in mounted position
- FIG. 6 shows, in vertical section, a further embodiment of a heat exchanger.
- the heat exchanger comprises one or more modular members.
- said modular members are essentially formed by finned tubular pancake coils 1 and 2, said coils 1 being arranged in a superimposed plane with respect to the plane of said coils 2.
- Said coils 1 and 2 may be interconnected by sealing means or may be formed in one piece. Further, said coils 1 and 2 may be wound in the same direction or may be wound in opposite directions.
- the free ends 1a and 2a of the coils 1 and 2, respectively, are connected to an external circuit as will be seen hereinafter.
- a separator disc 3 Between the super-imposed coils 1 and 2 is interposed a separator disc 3, said disc 3 being of reduced thickness and being formed with ribs or radial undulations or radial groove formations.
- each unit (formed by the coils 1 and 2 and the interposed disc 3 and hereinafter called the coil unit) is contained, in the demountable embodiment of FIG. 2, in a panlike member comprising an essentially cylindrical base 4 constituted of a bottom portion and a side Wall portion provided with counter-sunk edges 4a providing a seat such that each base 4 fittingly receives, through its own edge 4a the upper base.
- each coil unit is contained between two separator discs 5.
- These discs 5 are provided, as are the bases 4, with radial ribs as described above.
- Said discs or bases are moreover provided with wide-sectioned central holes 6 to allow the passage of exchange fluid in discontinuous hydraulic conditions from one coil unit to the superimposed coil unit.
- the coil units are together enclosed in a container or envelope formed of two ellipsoidal lids 7 joined to an intermediate cylindrical body 8 or, alternatively, directly connected to one another.
- the container may be in monobloc form, in which case the component parts are soldered together, or may be demountable, in which case one of the lids 7 is provided with flanges 7a and the cylindrical body with a counter-flange 8a of the clip or toggle lever type.
- the cylindrical body is provided, near its ends, with pressure devices 9 and 10, for example of the leaf spring type, designed to maintain the coil units in superimposed position.
- the cylindrical body is provided 'with bands 8b, designed to maintain the discs 5 (for the coil units) in position and simultaneously prevent the passage of fluid at the edges of said discs 5.
- the cylindrical body and the lids are provided with apertures at the ends 1a and 2a of each coil 1 and 2, respectively.
- the lids are further provided, in the region of central holes 7b and 70, with axial connections for the conveying of an exchange fluid in dis- 3 continuous hydraulic conditions. These axial connections are not shown in the drawings.
- junction means which connect the coils to an external circuit: such a junction is designed to provide a hydraulic seal between the interior of the coil and the outside atmosphere, and between the interior of the coil and the cylindrical body. This hydraulic seal is obtained by means of a single hydraulic seal packing gasket.
- the junction comprises a member 11 (FIG. 4) provided at an end with a tang secured, for example by soldering, to the cylindrical body 8 and in communication with the interior of the latter.
- the junction is provided, at its opposite end, with a male threading 11a and a zone of greatest internal diameter designed to constitute a seat for an annular packing gasket 12.
- Inside said member 11 is inserted the end, for example 10 of the finned coil.
- Said end 1a may be slidably adjusted within the member 11.
- a locking union 13, internally provided with a female threading 13a is adapted to engage said threading 11a.
- Said union 13 is externally knurled in order to permit its gripping and tightening on said member 11.
- the upper end of said union 13 is provided with a small-diameter hole 13b such as to define a stop 130.
- a hollow end essentially cylindrical member 14 is adapted to slidably and adjustably house said end 1a of the coil.
- Said member 14 comprises an end part 14a, adapted to act as packing for the gasket 12, a central flange 14b adapted to engage said stop 130 of the union 13 and suitably shaped for a tightening key.
- the end of said member 14 opposite the end 14a is provided with a male threading 14c.
- Said threading 140 is adapted to associate the described junction to a modular collector member or header 15 by engaging in a hole 16 thereof provided with an internal threading 16a conjugate to the threading 140 of said member 14.
- Said modular collector member 15 is constituted of a hollow cylindrical body or sleeve member provided at its ends with female threading 15a. symmetrically with respect to the axis of said hole or bore 16 the body 15 is provided with a hole 17 with internal female threading 17a designed to engage a locking cap 18. Said cap 18 allows the inspection of the coil as well as the introduction of members which close the coil and isolate it from the rest of the circuit.
- Successive modular collector members (of the same type as the collector 15) are arranged co-axially with respect to one another. To each of said collector members is connected an entrance or exit end respectively of the coils of successive modular units. Said collector members are associated to one another by threaded connection members 19.
- the collector unit thus obtained by the association of a plurality modular collectors (of the type 15) is closed at an end by a cap '20 (FIGS. 2 and 3).
- the other end of said collector unit is provided with a member 21 adapted to reduce the threading diameter for connection to external circuits 22.
- collector 23 and 24 may communicate to one another.
- the heat exchanger container is covered with a heat insulating material.
- the working of the heat exchanger according to the invention is as follows:
- a first exchange fluid of discontinuous flow is passed. Said fluid is conveyed through the labyrinth formed by the ribs or radial undulations, provided on the discs 3 or 5, and on the bottom surfaces of the bases 4 and flows over the external surface of the coils. The fluid passes from one coil unit to the coil unit beneath through the central holes 6 or the like. The fluid finally discharges through the hole 70 provided in the bottom of the container.
- a second exchange fluid in continuous flow is passed.
- Said second exchange fluid passes through the inlet collector 23 to which are connected the corresponding ends, for example 1a, of the coils forming the superimposed modular members.
- the second exchange fluid is evacuated through the outlet collector 24 which receives the flow coming from the coils through the outlet ends 2a.
- the heat exchanger according to the invention achieves all the predetermined objects.
- the heat exchanger according to the invention is especially compact due to the composition and form of the modular members and is of substantially sub-spherical shape.
- a high flow rate and a copious sub-division of the threads of the exchange fluids is obtained as a result of the arrangement of the coils, the guide ribs and the compentability of the coil units.
- the heat exchanger according to the invention enables the interchangeability of the series and parallel connections of the coils in manner such as to ensure the best flow conditions for the continuous flow exchange fluid.
- recirculation of the exchange fluid in intermediate exchange Zones, of counter-current or equi-current heat exchange of manual as well as automatic adjustment of the continuous flow fluid, of separation of the continuous flow of the fluid in a plurality of independent hydraulic zones, as well as the use of diflerent fluids.
- each modular collector member 15 it is possible, by suitably pre-arranging each modular collector member 15, to heat or cool two or more different fluids flowing through respective coils 2 and 3 by making use of a single first exchange fluid.
- the need for disassembling the heat exchanger unit is avoided, if some of the coils 2 and 3 should become obstructed.
- the obstructed coils can be readily cut-off and brought into use again in a conventional manner, simultaneously bringing the spare modular members into use as required.
- the heat exchanger according to the invention When the heat exchanger according to the invention is used in a fluid heating plant, e.g. a water heating plant, where a high supply heated water is required at predetermined time intervals, a number of modular members may be directly connected to a heated fluid storage reservoir.
- a single heat exchanger unit employing a single first exchange fluid both the characteristics of immediate heat exchange and heat storage are achieved in the heating plant.
- the heat exchanger according to the invention is shown in vertical cross-section as having the assembled modular members provided with central passages.
- such passages are of negligible diameter and provided in the disc element 3 for mounting the latter in a coil winding mechanism (not shown).
- Such passages or holes may also be closed, if desired.
- the heat exchange fluid entering the heat exchanger is thus caused to cascade across the pile of modular members and discs 5, following a zig-zag path from the central portion to the peri hcry of said modular members and discs and vice versa, alternatively.
- a heat exchanger including a container member, superposed pancake coils within said container member, said pancake coils having an inlet and an outlet end connected with respective inlet and outlet header members for the first heat exchanging fluid arranged outside said container member, an inlet and an outlet opening in said container for the second heat exchanging fluid, wherein according to the improvement the heat exchanger comprises further, between said pancake coils, a plurality of disc-like separator members extending parallel to the pancake coils and having groove formations extending in a radial direction from the center of the pancake coils towards the periphery thereof, one set of alternate separator members having openings in the center portion thereof and being sealed at the periphery thereof to the container member, the other set of alternate separator members being spaced peripherally from the container member thereby to induce a flow of said second heat exchanging fluid along said groove formations.
- a heat exchanger according to claim 1, wherein said pancake coils are grouped in pairs of superposed pancake coils forming coil units, each of said coil units including a pan like member having a bottom wall portion and a cylindrical side wall portion, said bottom wall portion having radial groove formations and said side Wall portion having groove formations extending transverse to said bottom wall portion, said side Wall portion having an upper edge defining a seat for the periphery of the bottom portion of a contiguous superposed coil unit, locking means being provided for said superposed coil units.
- a heat exchanger according to claim 1, wherein said header member comprises a plurality of composable sleeve members having threaded openings and connector members for connecting the composable sleeve member at the threaded openings thereof and wherein according to the improvement each of said sleeve members has a threaded bore opposite and aligned with one of said threaded openings opening into a respective of said coils, and a removable cap member closing said threaded bore.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT3031466 | 1966-11-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3499484A true US3499484A (en) | 1970-03-10 |
Family
ID=11229518
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US682002A Expired - Lifetime US3499484A (en) | 1966-11-24 | 1967-11-13 | Two-fluid heat exchanger |
Country Status (7)
Country | Link |
---|---|
US (1) | US3499484A (es) |
BE (1) | BE706477A (es) |
CH (1) | CH491349A (es) |
DE (1) | DE1601217A1 (es) |
ES (1) | ES347326A1 (es) |
GR (1) | GR34811B (es) |
NL (1) | NL6715755A (es) |
Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3746084A (en) * | 1970-04-16 | 1973-07-17 | J Ostbo | Heat-exchanger comprising a plurality of helically wound pipe elements |
US3991821A (en) * | 1974-12-20 | 1976-11-16 | Modine Manufacturing Company | Heat exchange system |
US4160801A (en) * | 1977-10-19 | 1979-07-10 | Surgikos | Heat exchanger-blood oxygenator combination |
US4165108A (en) * | 1977-01-14 | 1979-08-21 | Societe Nationale Elf Aquitaine (Production) | Device for connecting tubes having a small cross-section perpendicularly to a universal coupling element |
US4202407A (en) * | 1978-07-24 | 1980-05-13 | Didier Engineering Gmbh | Apparatus for cooling gases from coke plants |
US4210203A (en) * | 1976-10-21 | 1980-07-01 | Aktiebolaget Atomenergi | Heat exchanger apparatus |
EP0067044A2 (en) * | 1981-06-05 | 1982-12-15 | Russell Finex Limited | Heat exchanger |
US4535838A (en) * | 1983-11-07 | 1985-08-20 | American Standard Inc. | Heat exchange coil and method of making |
US4614231A (en) * | 1982-08-09 | 1986-09-30 | Murray Corporation | Evaporators |
US4640535A (en) * | 1985-09-27 | 1987-02-03 | Chrysler Motors Corporation | Quick hose connector |
US4665805A (en) * | 1982-03-26 | 1987-05-19 | Verdal Maskinverksted A/S | Apparatus for counterflow air to air generative heat exchange and ventilating a room space |
US4856824A (en) * | 1986-02-27 | 1989-08-15 | Norsk Hydro A.S. | Method of manufacture of manifolds and manifold provided by such method |
US4872503A (en) * | 1986-03-13 | 1989-10-10 | Marriner Raymond E | Air heat exchanger |
US5099909A (en) * | 1991-05-31 | 1992-03-31 | Giuseppe Barigelli | Surface type heat exchanger for heating the water feeding the windshield washer of automobiles and for heating the diesel oil |
US5109920A (en) * | 1987-05-25 | 1992-05-05 | Ice-Cel Pty. Limited | Method of manufacturing heat exchangers |
US5682947A (en) * | 1994-11-15 | 1997-11-04 | Graham Corporation | Housing assembly for a coil heat exchanger |
EP0864829A1 (de) * | 1997-03-11 | 1998-09-16 | Reto Schmid | Vorrichtung zur Rückgewinnung von Wärme aus Rauchgas, und Verfahren zur Herstellung derselben |
EP0874209A1 (en) * | 1997-04-24 | 1998-10-28 | Giorgio Scanferla | Heat exchanger for water heating apparatuses and method for producing the same |
US20040069470A1 (en) * | 2002-09-10 | 2004-04-15 | Jacob Gorbulsky | Bent-tube heat exchanger |
GB2422002A (en) * | 2005-01-06 | 2006-07-12 | Nelson | Modular heat exchanger |
US20070125528A1 (en) * | 2003-12-30 | 2007-06-07 | Ahmad Fakheri | Finned helicoidal heat exchanger |
WO2010133230A2 (en) * | 2009-05-20 | 2010-11-25 | Heri Schwartz Jacobsen | A heat exchanger |
US20110017314A1 (en) * | 2008-02-11 | 2011-01-27 | Johannes Wegesin | Arrangement for producing a connection possibility, in particular for a sprinkler on a concrete or reinforced concrete floor, and method therefor |
US20120043052A1 (en) * | 2010-07-23 | 2012-02-23 | Heat-Line Corporation | Geothermal Energy Transfer System |
US10295278B2 (en) * | 2011-05-26 | 2019-05-21 | Valeo Systemes Thermiques | Header box, heat exchanger comprising said header box and method of crimping such a box |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3308875C2 (de) * | 1983-03-12 | 1985-06-13 | Alpine Ag, 8900 Augsburg | Vorrichtung zum Kühlen von körnigem Gut |
AT397575B (de) * | 1987-09-24 | 1994-05-25 | Vaillant Gmbh | Plattenförmiger wärmetauscher |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE179793C (es) * | 1905-03-07 | 1906-12-18 | ||
US1946118A (en) * | 1931-02-09 | 1934-02-06 | Standard Oil Co | Chamber coil connection |
US3147800A (en) * | 1960-12-29 | 1964-09-08 | Trane Co | Serpentined heat exchanger |
-
1967
- 1967-11-06 ES ES347326A patent/ES347326A1/es not_active Expired
- 1967-11-13 US US682002A patent/US3499484A/en not_active Expired - Lifetime
- 1967-11-14 BE BE706477D patent/BE706477A/xx unknown
- 1967-11-21 CH CH1641267A patent/CH491349A/de not_active IP Right Cessation
- 1967-11-21 NL NL6715755A patent/NL6715755A/xx unknown
- 1967-11-22 DE DE19671601217 patent/DE1601217A1/de active Pending
- 1967-11-23 GR GR670134811A patent/GR34811B/el unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE179793C (es) * | 1905-03-07 | 1906-12-18 | ||
US1946118A (en) * | 1931-02-09 | 1934-02-06 | Standard Oil Co | Chamber coil connection |
US3147800A (en) * | 1960-12-29 | 1964-09-08 | Trane Co | Serpentined heat exchanger |
Cited By (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3746084A (en) * | 1970-04-16 | 1973-07-17 | J Ostbo | Heat-exchanger comprising a plurality of helically wound pipe elements |
US3991821A (en) * | 1974-12-20 | 1976-11-16 | Modine Manufacturing Company | Heat exchange system |
US4210203A (en) * | 1976-10-21 | 1980-07-01 | Aktiebolaget Atomenergi | Heat exchanger apparatus |
US4165108A (en) * | 1977-01-14 | 1979-08-21 | Societe Nationale Elf Aquitaine (Production) | Device for connecting tubes having a small cross-section perpendicularly to a universal coupling element |
US4160801A (en) * | 1977-10-19 | 1979-07-10 | Surgikos | Heat exchanger-blood oxygenator combination |
US4202407A (en) * | 1978-07-24 | 1980-05-13 | Didier Engineering Gmbh | Apparatus for cooling gases from coke plants |
EP0067044A2 (en) * | 1981-06-05 | 1982-12-15 | Russell Finex Limited | Heat exchanger |
EP0067044A3 (en) * | 1981-06-05 | 1983-05-11 | Russell Finex Limited | Heat exchanger |
US4665805A (en) * | 1982-03-26 | 1987-05-19 | Verdal Maskinverksted A/S | Apparatus for counterflow air to air generative heat exchange and ventilating a room space |
US4614231A (en) * | 1982-08-09 | 1986-09-30 | Murray Corporation | Evaporators |
US4535838A (en) * | 1983-11-07 | 1985-08-20 | American Standard Inc. | Heat exchange coil and method of making |
US4640535A (en) * | 1985-09-27 | 1987-02-03 | Chrysler Motors Corporation | Quick hose connector |
US4856824A (en) * | 1986-02-27 | 1989-08-15 | Norsk Hydro A.S. | Method of manufacture of manifolds and manifold provided by such method |
US4872503A (en) * | 1986-03-13 | 1989-10-10 | Marriner Raymond E | Air heat exchanger |
US5109920A (en) * | 1987-05-25 | 1992-05-05 | Ice-Cel Pty. Limited | Method of manufacturing heat exchangers |
US5099909A (en) * | 1991-05-31 | 1992-03-31 | Giuseppe Barigelli | Surface type heat exchanger for heating the water feeding the windshield washer of automobiles and for heating the diesel oil |
US5682947A (en) * | 1994-11-15 | 1997-11-04 | Graham Corporation | Housing assembly for a coil heat exchanger |
EP0864829A1 (de) * | 1997-03-11 | 1998-09-16 | Reto Schmid | Vorrichtung zur Rückgewinnung von Wärme aus Rauchgas, und Verfahren zur Herstellung derselben |
EP0874209A1 (en) * | 1997-04-24 | 1998-10-28 | Giorgio Scanferla | Heat exchanger for water heating apparatuses and method for producing the same |
US20040069470A1 (en) * | 2002-09-10 | 2004-04-15 | Jacob Gorbulsky | Bent-tube heat exchanger |
US20070125528A1 (en) * | 2003-12-30 | 2007-06-07 | Ahmad Fakheri | Finned helicoidal heat exchanger |
US20080185123A1 (en) * | 2005-01-06 | 2008-08-07 | Wayne Nelson | Modular Heat Exchanger |
GB2422002A (en) * | 2005-01-06 | 2006-07-12 | Nelson | Modular heat exchanger |
US8607853B2 (en) | 2005-01-06 | 2013-12-17 | Modular Heat Exchangers Limited | Modular heat exchanger connectable in multiple different configurations |
US20110017314A1 (en) * | 2008-02-11 | 2011-01-27 | Johannes Wegesin | Arrangement for producing a connection possibility, in particular for a sprinkler on a concrete or reinforced concrete floor, and method therefor |
WO2010133230A2 (en) * | 2009-05-20 | 2010-11-25 | Heri Schwartz Jacobsen | A heat exchanger |
WO2010133230A3 (en) * | 2009-05-20 | 2011-07-28 | Heri Schwartz Jacobsen | A heat exchanger |
EP3517872A1 (en) * | 2009-05-20 | 2019-07-31 | Sp/f Defined Energy | A heat exchanger |
US20120043052A1 (en) * | 2010-07-23 | 2012-02-23 | Heat-Line Corporation | Geothermal Energy Transfer System |
US9816732B2 (en) | 2010-07-23 | 2017-11-14 | Heat-Line Corporation | Geothermal energy transfer system |
US10295278B2 (en) * | 2011-05-26 | 2019-05-21 | Valeo Systemes Thermiques | Header box, heat exchanger comprising said header box and method of crimping such a box |
Also Published As
Publication number | Publication date |
---|---|
NL6715755A (es) | 1968-05-27 |
CH491349A (de) | 1970-05-31 |
BE706477A (es) | 1968-03-18 |
ES347326A1 (es) | 1969-02-01 |
GR34811B (el) | 1968-06-28 |
DE1601217A1 (de) | 1970-06-25 |
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