US2900798A - Heat-exchanger in which a multi-component medium is cooled - Google Patents

Heat-exchanger in which a multi-component medium is cooled Download PDF

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US2900798A
US2900798A US358317A US35831753A US2900798A US 2900798 A US2900798 A US 2900798A US 358317 A US358317 A US 358317A US 35831753 A US35831753 A US 35831753A US 2900798 A US2900798 A US 2900798A
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Prior art keywords
fins
medium
heat exchanger
conductor
heat
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US358317A
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English (en)
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Jonkers Cornelius Otto
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US Philips Corp
North American Philips Co Inc
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US Philips Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
    • F25B9/004—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J5/00—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants
    • F25J5/002—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants for continuously recuperating cold, i.e. in a so-called recuperative heat exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/24—Processes or apparatus using other separation and/or other processing means using regenerators, cold accumulators or reversible heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2220/00—Processes or apparatus involving steps for the removal of impurities
    • F25J2220/40—Separating high boiling, i.e. less volatile components from air, e.g. CO2, hydrocarbons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2270/00—Refrigeration techniques used
    • F25J2270/90—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration
    • 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
    • Y10S62/00—Refrigeration
    • Y10S62/902—Apparatus
    • Y10S62/905—Column
    • Y10S62/906—Packing
    • 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
    • Y10S62/00—Refrigeration
    • Y10S62/902—Apparatus
    • Y10S62/905—Column
    • Y10S62/907—Insulation

Definitions

  • the invention relates to a device in which a medium constituted by a plurality of components is cooled, one or more of the components being separated out from the medium.
  • the device may, for example, be used, if impurities, such as water vapour and carbonic acid have to be extracted from a gaseous medium, for example air.
  • One of the conventional methods to remove components from a medium is realized by leading the medium through chemical substances forming a chemical or physical compound with the components, for example, with the impurities.
  • This method has in general satisfactory results, but it has a limitation in that it is complicated and that the chemical substances must be replaced by new substances from time to time, so that in certain cases the method may be comparatively costly.
  • the device by means of which this method is carried out is, in general, bulky.
  • the medium is led through a heat exchanger formed as a recuperator.
  • a recuperator the medium from which a component is to be extracted is in thermal contact with a further meditun, from which it is separated by an intermediate partition. Consequently, these recuperators always require a cooling medium.
  • the medium to be cooled may, for example, be air and the cooling medium one of the fraction produced in the gas fractionating column.
  • the heat exchanger according to the invention is an expedient, since with this heat exchanger any source of cold of adequately low temperature may be used.
  • the temperature drops gradually from the hot end of the recuperator Where the medium to be cooled enters, to the cold end Where this medium leaves the heat exchanger. This gradually decreasing temperature has been found to be very desirable. If the medium to be cooled would come into contact with walls of too low temperature, the component to be extracted might be separated out before contacting with the wall.
  • the component would 'adhere less tightly to the wall and leave the heat exchanger together with the medium. It has furthermore been found that the medium should be set into turbulence to an extent such that the whole medium engages the Wall as frequently as possible. This may be realized by. providing extensions on the wall of the heat exchanger.
  • the heat exchanger according to the invention exhibits the feature that the carrier is provided with a plurality of fins, with which the medium is in thermal contact, the heat of the fins being conducted away for at least 25% by conduction via the carrier to the cold side thereof, while at least on some of these fins the component(s) to be extracted is (are) deposited, so that near these extensions the composition of the medium is modified and the temperature at which the component(s) can be extracted is reduced, the mean temperature of each of atent O starts is not more than 20 0, preferably not more than 10 C. lower than the point of extraction of the component(s) in the medium, supplied to this fin.
  • the carrier in a further embodiment of the invention comprises portions each having a different heat resistance.
  • the heat exchanger according to the invention may be used not only for freezing out components 1 nt also for further cooling of the medium from which the components are extracted.
  • the heat exchanger has the feature that the conductor is provided with a plurality of fins at which the component(s) is (are) separated out and with a plurality of fins by means of which the medium from which the component(s) is (are) extracted is cooled.
  • the heat exchanger through which passes during normal operation a medium containing a plurality of components to be extracted of relatively diiferent extraction ranges has a conductor provided with at least two groups of fins used for extracting one or more components, while the component(s) of one extraction range is (are)primarily separated 'out at one group of fins and the component(s) of the other extraction range is (are) separated out on the other group of fins.
  • the fins of one group have in succession a temperature diiference of not more than 20 C., preferably not more than 10 C.
  • the fins of the various groups are arranged after one another in a closed sequence. Thusthe temperatures of the heat exchanger vary little with the quantity of medium passing through it.
  • the desired temperatures at the fins may be obtained by constructing the conductor in a manner such that its portions have the required heat resistance. This resistance may be realized by providing the desired dimensions such as thickness or length for the carrier or by making a carrier from special material. tive embodiment of the invention, at least some of the fins may have ditferent heat resistances. In this case the heat resistance of the carrier need not fulfil special requirements.
  • the heat exchanger according to the invention may be used isuccessfully for freezing out impurities contained in gaseous media.
  • the heat exchanger will frequently be used as a freezerin' a cold-gas refrigerator.
  • the term cold-"gas refrigerator is to be understood to mean here- Patented Aug. 25, 1959 However, in an alternain a refrigerator operating on the reversed hot-gas engine principle.
  • These cold-gas refrigerators comprise an element which conducts away the cold produced by the apparatus to the outside; this element is termed freezer. By means of the cold the temperature of a medium may be reduced in this freezer.
  • cold is withdrawn from the heat exchanger via the conductor, which is, on its cold side, in thermal contact with the wall of the cold-gas refrigerator, which bounds the cold space thereof.
  • the heat exchanger according to the invention may be constructed in various ways.
  • the conductor is provided with fins, constructed in the form of transverse plates and forming the boundaries of spaces from the hot side of the heat exchanger to the cold side thereof, these spaces communicating with one another through apertures, so that via these apertures the medium is allowed to flow through the spaces from the hot side of the heat exchanger to the cold side thereof.
  • the apertures it is desirable for the apertures to be such that the medium flowing through the heat exchanger is set into turbulence, so that the medium frequently comes into close contact with the extensions.
  • the desired turbulence may be obtained, if the heat exchanger comprises a conductor and a wall spaced apart therefrom by a certain distance, the conductor being provided with fins shaped in the form of transverse plates, apertures being provided between these transverse plates and the wall.
  • the heat exchanger comprises a carrier and a wall spaced apart therefrom by a certain distance, the conductor being provided with transverse plates extending to engage the wall, the transverse plates being provided with apertures.
  • the apertures in each transverse plate are preferably provided at least in part opposite a wall portion of the adjacent transverse plate. Particularly in this case an intensive turbulence of the medium is ensured.
  • the heat exchanger may be provided with a conductor, in which all fins are arranged in a sequence in the direction of length. of the conductor.
  • a heat exchanger will, in general, be in need of only a comparatively small cross sectional area, but its height will be comparatively great. For structural reasons it will, however, be sometimes desirable to provide a smaller height for the heat exchanger, while in these cases the cross sectional area may be larger.
  • the heat exchanger comprises at least two concentrical portions, each of which comprises a conductor provided with fins and thermally connected to one another.
  • Fig. 1 shows a cold-gas refrigerator comprising a heat exchanger according to the invention.
  • Figs. 2 and 3 show one embodiment in which the heat exchanger comprises two concentrical portions.
  • Fig. 4 shows a heat exchanger in which the conductor is surrounded by a wall, apertures being provided between the fins and the wall.
  • Figs. 6 and 7 show one embodiment in which the heat is conducted away from a source of cold and'from a medium brushing past the carrier.
  • a quantity of working medium for example, hydrogen, performs a closed thermodynamic cycle.
  • the working space of the apparatus comprises a freezing space 1, ducts 2 in the freezer 3, a regenerator 4 and ducts 5 in a cooler 6 and a cooled space 7.
  • the volume of the freezing space 1 is varied by means of a displacer piston 8 and the volume of the cooled space 7 is varied both by the motions of the displacer piston 8 and those of a piston 9.
  • the displacer piston 8 and the piston 9 reciprocate, for this purpose, with a substantially constant phase difference, of for example 90".
  • the cold-gas refrigerator is driven by means of a motor, for example, an electric motor 13, as is shown in the figure.
  • the freezer comprises two portions, i.e. one portion 14, associated with the ducts 2, and the portion formed by the conductor 15 having the fins constructed in the form of transverse plates 16. These transverse plates are provided with apertures 17, which are arranged in staggered position relatively to one another, as is also shown in Fig. 3.
  • the heat exchanger comprises four portions, i.e.
  • one portion 18, in which one component of the medium to be cooled may be separated out, one portion 19 in which the temperature of the medium is further reduced, one portion 20 in which a second component may be extracted from the medium and the portion 14 in which the temperature of the medium may be further reduced.
  • the cold-gas refrigerator is used for liquifying air, it will, in general, be desirable to extract the impurities, such as water vapour and the carbonic acid, from the air.
  • the extraction range of water vapour extends to about 60, 0.0006% by weight of water vapour being still left, while the extraction range of the carbonic acid extends from l40 C. to l C., 4.l0 by weight of carbonic acid being left.
  • the Water vapour is separated out in the portion 18, so that the fins of this portion are spaced apart from one another by a comparatively large distance, while these fins also have the aforesaid required temperature difference of for example 8.
  • the air freed from the water vapour is cooled in the portion 19 from 60 C. to l40 C.
  • the small temperature difference between the fins need not be maintained, it being permitted moreover to arrange the fins nearer one another. If desired, the small temperature difference between the fins may be maintained, so that the temperature difference of the first fins varies less if the quantity of medium is varied.
  • the carbonic acid is separated out in the portion 20, so that also here the fins are more remote from one another, while the temperatures of the fins exhibit a slight difference, of for example 10 C.
  • the air thus cooled is cooled further until liquid is formed, which is conducted away through a duct 21.
  • the carrier. or conductor 15 comprises portions having different wall thicknesses, as is evident from the figure.
  • the heat exchanger is surrounded by a screen 22 having heat-insulating properties, this screen being provided with an aperture 23 at the top, through which the air is supplied.
  • the outlet duct 21 is also surrounded by a heat-insulating layer.
  • the air may be supplied by means of the pressure difference prevailing between the uncooled air and the cooled air.
  • the heat exchanger described above has the property that the temperature of the first fins varies comparatively little with the quantity of medium passing through the heat exchanger. In view thereof it is desirable that the temperature differences of the extensions not intended forseparating out a component shouldv not be too high. It has furthermore been found that the layer of ice'on the fins constitutes such a smallinsulation that the extraction of the component may be continued until the whole space between, the fins is locally filled out.
  • the heat exchanger comprises two portions which are arranged concentrically to one another.
  • Fig. 3 is a cross sectional view taken on the line IIIIII of Fig. 2.
  • the heat exchanger is secured to a head 30 of a coldgas refrigerator.
  • the conductor comprises three portions, i.e. a portion 31, a portion 32 and a portion 33. The heat resistances of these conductor portions differ.
  • the wall thickness of the conductor portion 31 is materially larger than that of the portion 32 and the wall thickness of the latter portion exceeds that of the portion 33.
  • the portions 32 and 33 are connected by means of a connecting piece 34 of good thermal conductivity to one another.
  • the conductor portions are provided with fins formed in the shape of transverse plates, in which provision is made of apertures. As is evident from Fig. 3, these apertures are arranged in staggered position.
  • the transverse plates 35 with the apertures 36 of the conductor portion 31 and the transverse plates 37 with the apertures 38 of the conductor portion 32 extend to engage a wall 39 surrounding these conductor portions, while the transverse plates 40 with the apertures 41 of the conductor portion 33 extend to engage a wall 42.
  • the conductor portion 33 is insulated from the wall 39.
  • the heat exchanger is surrounded by a wall 43, having heatinsulating properties.
  • the gas to be cooled is supplied through a duct 44 and flows through the apertures of the transverse plates 40 in upward direction, then through an aperture 45 in the connecting piece 34 and through the apertures 36 and 38 in the transverse plates 35 and 37 respectively and along vanes 46 in the head 30.
  • the cooled medium leaves the heat exchanger as a liquid and is conducted away via the ducts 47 and 48.
  • On the transverse plates 40 associated with the conductor portion 33 is deposited the water vapour, whilst the spaces 49 between these plates are so large that it takes a comparatively long time before they are completely filled with ice.
  • carbonic acid may be separated out, the transverse plates 37 serving only for further cooling the medium.
  • the temperature difference between the transverse plates 35 and 40 is such that the temperature difference between the successive transverse plates associated with one of these groups is not more than for example C.
  • the temperature of the fin where the extraction starts is not more than C., preferably not more than 10 C. lower than the extraction point of that component in the medium as it is supplied to the fins.
  • the extraction will begin at one of the transverse plates located, for example at the bottom of the heat exchanger, where the medium enters. If after some time such a quantity of ice is separated out in the heat exchanger that some of the spaces 49 are more or less filled out, it will be desirable to cease the supply of medium to the heat exchanger, while at the same time no cold is any longer withdrawn from the heat exchanger.
  • the solid carbonic acid in the spaces 50 will then volatilize, while the ice in the spaces 49 changes into water and may be conducted away through a duct 51.
  • substantially all the heat is conducted by conduction via the conductor to the cold side thereof.
  • part of this heat can be conducted away by means of a medium flowing along a wall partition.
  • the heat exchanger comprises a conductor 60, provided with annular fins 61. These extensions are surrounded by a wall 62, which may have heat-insulating properties. The fins 61 do not extend so far as to engage the wall 62, so that apertures 63 are left.
  • the medium to be cooled is supplied at the top through the aperture 64 and the cooled medium may be conducted away at the bottom via the duct 64.
  • the conductor 60 may be connected to a source of cold.
  • the heat is conducted away from the medium flowing along the fins via the fins and the conductor to the source of cold, for example, the head 66 of a cold-gas refrigerator.
  • This may be provided with vanes 67.
  • the operation of this heat exchanger corresponds furthermore completely to that of the heat exchanger described above.
  • Fig. 5 shows a heat exchanger in which the fins each have a difierent heat resistance.
  • a conductor 70 has a constant heat conductivity and the heat exchanger comprises two portions, i.e. the portion having the extensions. 71 and a portion having the fins 72.
  • the portion having the fins 71 serves to extract a component while the portion comprising the fins 72 is used only for further cooling of the medium.
  • the fins 71 and 72 are provided with apertures 73 and 74 respectively and with a part 75 and 76 respectively having a definite heat resistance. This heat resistance is such that the temperature differences between the fins 71 are comparatively small.
  • the parts 75 and 76 are provided in a layer 77 of heat-insulating material applied to the conductor.
  • the fins are surrounded by a sheath 78, having heat-insulating properties.
  • Figs. 6 and 7 show a heat exchanger in which part of the heat is conducted away via the conductor to a source of cold, while a further part of the heat is transferred to a medium flowing along the carrier.
  • Fig. 7 is a sectional view taken on the line VIP-VII of Fig. 6.
  • the heat exchanger comprises a conductor 80, secured to a head 81 of a cold-gas refrigerator. Both on the outer side and the inner side the conductor is provided with fins. On the outer side provision is made of the fins 82, having apertures 83 which are arranged in staggered position as is shown in Fig. 7.
  • the fins 84 of the conductor are provided with apertures 85, one or two of these apertures being provided in every other partition respectively.
  • the conductor has apertures 86, through which the space about the conductor communicates with the space inside the conductor.
  • the whole heat exchanger is surrounded by a screen 87, having heat-insulating properties and provided at the top with two inlet apertures 88 and with an outlet aperture 89.
  • the medium to be cooled is supplied through the apertures 88 to the heat exchanger and brushes past the fins 82, where it is cooled, a component being thus separated out on the fins. Then the medium flows through the apertures 86 and is heated while flowing along the fins 84. In this embodiment at leat 25% of the heat conducted away from the fins is transferred via the conductor to the source of cold.
  • a heat exchanger having a gas passing therethrough containing a plurality of components to be cooled and having at least one of said components precipitated out comprising a conductor enclosure containing a conductor and having a hot end and a cold end, said medium flowing from the hot end to the cold end thereof, a plurality of fins with which the medium is in thermal contact, means mounting said fins in said conductor enclosure in superposed relationship and substantially laterally to said conductor enclosure, an inlet duct for said medium at the hot end of said conductor enclosure, an outlet duct for said medium at the cold end of said conductor enclosure, a thermal sink adjacent to the cold end of the conductor enclosure formirrg a cold source for said conductor enclosure and directly connected thereto, said component to be separated being deposited on certain of said fins, the composition of the medium being modified and the temperature at which said component is to be precipitated being reduced, and the mean temperature of each of said fins being at the maximum 20 C. lower than that of successive fins, and the mean temperature of one of said fins at which
  • a heat exchanger having a gas passing therethrough containing a plurality of components to be cooled and at least one of said components to be precipitated out, said components having different extraction ranges comprising a conductor enclosure containing a conductor and having a hot end and a cold end, said medium flowing from the hot end to the cold end thereof, a plurality of fins with which the medium is in thermal contact, means mounting said fins in said conductor enclosure in superposed relationship and substantially laterally to said conductor enclosure, an inlet duct for said medium at the hot side of said conductor enclosure, an outlet duct for said medium at the cold end of said conductor enclosure, a thermal sink adjacent to the cold end of the conductor enclosure forming a cold source for said conductor enclosure and directly connected thereto, said fins being formed in at least two groups whereby at least one component associated with one extraction range is precipitated out in one group of fins and at least one component associated with another extraction range is precipitated out in another group of fins, and successive fins of any group having a temperature difference of not more
  • a heat exchanger as set forth in claim 4 further comprising a third group of fins being positioned between said other two groups of fins, said third group serving primarily to cool said medium.
  • a heat exchanger as set forthin claim 4 wherein said conductor is provided with fins constructed in the form of transverse plates having apertures therein and bounding spaces from the hot end of the heat exchanger to the cold end thereof, said bounding spaces communicating with each other through said apertures whereby fluid medium may flow through said spaces and apertures from the hot end of said heat exchanger to the cold end thereof.
  • a heat exchanger as set forth in claim 4 wherein said conductor has a wall spaced therefrom a predetermined distance, said conductor being provided with a further group of transverse plates, said further group of transverse plates having apertures and being so arranged as to extend to a point adjacent to said wall.
  • a heat exchanger as set forth in claim 4 further comprising two concentric portions, each of which comprises a conductor provided with a plurality of fins, said conductors being thermally in contact with each other.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US358317A 1953-04-22 1953-05-29 Heat-exchanger in which a multi-component medium is cooled Expired - Lifetime US2900798A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL331659X 1953-04-22
NL764119X 1954-01-13

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US358317A Expired - Lifetime US2900798A (en) 1953-04-22 1953-05-29 Heat-exchanger in which a multi-component medium is cooled
US481405A Expired - Lifetime US2897655A (en) 1953-04-22 1955-01-12 System comprising a cold-gas refrigerator and a heat exchanger

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US (2) US2900798A (es)
BE (1) BE527602A (es)
CH (1) CH331659A (es)
DE (1) DE961630C (es)
FR (1) FR1139851A (es)
GB (2) GB746436A (es)
NL (1) NL91948C (es)

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US3100697A (en) * 1960-08-01 1963-08-13 Gas Proc Inc Apparatus for treatment of natural gas
US3129081A (en) * 1959-03-17 1964-04-14 Philips Corp Device for fractionating gas
US3362174A (en) * 1963-10-14 1968-01-09 Air Liquide Gaseous condensation in vacuum with plural refrigerants
US4259844A (en) * 1979-07-30 1981-04-07 Helix Technology Corporation Stacked disc heat exchanger for refrigerator cold finger
US5746269A (en) * 1996-02-08 1998-05-05 Advanced Mobile Telecommunication Technology Inc. Regenerative heat exchanger

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Publication number Priority date Publication date Assignee Title
DE1025913B (de) * 1954-07-24 1958-03-13 Philips Nv Waermeaustauscher, in dem ein aus mehreren Bestandteilen bestehendes Mittel abgekuehlt wird
BE540046A (es) * 1954-07-24
DE1165052B (de) * 1960-06-22 1964-03-12 Schwermaschb Iakarl Liebknecht Waermetauscher zum Kuehlen einer Fluessigkeit mit einer in Rohren gefuehrten Kuehlfluessigkeit
NL7514182A (nl) * 1975-12-05 1977-06-07 Philips Nv Heetgaszuigermachine.

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US1779135A (en) * 1929-06-01 1930-10-21 Electrolux Servel Corp Evaporator
US1794030A (en) * 1927-02-21 1931-02-24 Metropolitan Eng Co Refrigerating machine
US1842263A (en) * 1929-03-15 1932-01-19 Air Liquide Low temperature treatment of gases
US1882640A (en) * 1930-04-26 1932-10-11 Dryice Equipment Corp Refrigerating and display apparatus and method
US2090454A (en) * 1931-05-04 1937-08-17 Adico Dev Corp Refrigeration apparatus
US2097434A (en) * 1935-11-09 1937-11-02 Baufre William Lane De Apparatus for cooling and rectifying mixed gases
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US3362174A (en) * 1963-10-14 1968-01-09 Air Liquide Gaseous condensation in vacuum with plural refrigerants
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Also Published As

Publication number Publication date
FR1139851A (fr) 1957-07-08
NL91948C (es)
DE961630C (de) 1957-04-11
CH331659A (de) 1958-07-31
BE527602A (es)
US2897655A (en) 1959-08-04
GB746436A (en) 1956-03-14
GB764119A (en) 1956-12-19

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