GB1305336A - - Google Patents

Info

Publication number
GB1305336A
GB1305336A GB3833171A GB3833171A GB1305336A GB 1305336 A GB1305336 A GB 1305336A GB 3833171 A GB3833171 A GB 3833171A GB 3833171 A GB3833171 A GB 3833171A GB 1305336 A GB1305336 A GB 1305336A
Authority
GB
United Kingdom
Prior art keywords
mixture
tubes
mixing
region
plastic
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
Application number
GB3833171A
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of GB1305336A publication Critical patent/GB1305336A/en
Expired legal-status Critical Current

Links

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
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
    • F28F21/062—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material the heat-exchange apparatus employing tubular conduits
    • 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
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
    • F28F2009/222—Particular guide plates, baffles or deflectors, e.g. having particular orientation relative to an elongated casing or conduit
    • F28F2009/224—Longitudinal partitions
    • 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
    • Y10S165/427—Manifold for tube-side fluid, i.e. parallel

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Artificial Filaments (AREA)
  • Moulding By Coating Moulds (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

1305336 Extruding PTFE tubes E I DU PONT DE NEMOURS & CO 16 Aug 1971 [17 Aug 1970] 38331/71 Heading B5A [Also in Division F4] A process for producing small diameter heat exchange tubes by extrusion comprises (a) dry mixing pellets of a polyfluorinated plastic and particles of graphite having a diameter >2 microns to form a mixture comprising 5 to 45% by wt. of graphite particles (b) passing the dry mixture into a high energy, low temperature mechanical mixing region for mechanical milling (c) forcing the mixture into a melting region where the bulk temperature of the mixture is maintained at a temperature <50‹ F. above the melt point of the plastic and (d) extruding the melt mixture into hollow tubes in which the ratio of the diameter of the graphite particles to the wall thickness of the tubes is between 0À001 and 0À5. Preferably the polyfluorinated plastic consists of a polymer of tetrafluoroethylene or a copolymer of tetrafluoroethylene and hexafluoropropylene. The mechanical mixing region is formed between two co-rotating screws having varying cross-sections which divide the mechanical mixing region into a plurality of mixing zones to impart varying degrees of energy to the mixing process.
GB3833171A 1970-08-17 1971-08-16 Expired GB1305336A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6422170A 1970-08-17 1970-08-17

Publications (1)

Publication Number Publication Date
GB1305336A true GB1305336A (en) 1973-01-31

Family

ID=22054390

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3833171A Expired GB1305336A (en) 1970-08-17 1971-08-16

Country Status (10)

Country Link
US (1) US3718181A (en)
JP (1) JPS5517319B1 (en)
BE (1) BE771402A (en)
CA (1) CA940115A (en)
DE (1) DE2141019C3 (en)
FR (1) FR2102305B1 (en)
GB (1) GB1305336A (en)
IT (1) IT940439B (en)
NL (1) NL7111306A (en)
SE (3) SE369442B (en)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2603506A1 (en) * 1976-01-30 1977-08-11 Jenaer Glaswerk Schott & Gen AREA SOLAR ENERGY COLLECTORS WITH ABSORBER PLATES MADE OF SOLID GLASS FIBER
DE2856642A1 (en) * 1978-12-29 1980-07-10 Akzo Gmbh THIN-WALLED HOSE MADE FROM A MELT SPINNABLE SYNTHETIC POLYMER AND ITS USE IN A DEVICE FOR TRANSMITTING HEAT
GB2047874B (en) * 1979-03-17 1983-12-21 Akzo Nv Apparatus in which heat is transferred through hollow threads as well as hollow threads suitable for this purpose
SE449456B (en) * 1983-11-15 1987-05-04 Uponor Ab PROCEDURE AND DEVICE FOR MANUFACTURE OF RODS WHERE THE FORM BACK PARTS ARE DIVIDED IN THE LONG DIRECTION OF THE FORM
JPS61116292A (en) * 1984-11-07 1986-06-03 イー・アイ．デユポン・ド・ネモアース・アンド・コンパニー Gas-liquid heat-exchanging method and device
US4643244A (en) * 1984-11-07 1987-02-17 E. I. Du Pont De Nemours And Company Gas-liquid heat exchange process and apparatus
DE3614342A1 (en) * 1986-04-28 1987-10-29 Akzo Gmbh HEAT AND / OR FABRIC EXCHANGER AND METHOD FOR PRODUCING HEAT AND / OR FABRIC EXCHANGER
DE3614339A1 (en) * 1986-04-28 1987-10-29 Akzo Gmbh HEAT EXCHANGER AND METHOD FOR PRODUCING HEAT EXCHANGER
US4816331A (en) * 1987-01-02 1989-03-28 Ppg Industries, Inc. Electrostatic coating of pultruded articles
US4975321A (en) * 1988-06-20 1990-12-04 E. I. Du Pont De Nemours And Company Structural composites of fluoropolymers reinforced with continuous filament fibers
US5069959A (en) * 1988-06-20 1991-12-03 E. I. Du Pont De Nemours And Company Structural composites of fluoropolymers reinforced with continuous filament fibers
SE9300209L (en) * 1993-01-23 1994-07-24 Klaus Lorenz Heat
US5902755A (en) * 1993-05-03 1999-05-11 Tox-Wastech, Inc. High Strength composite materials
FR2793011B1 (en) * 1999-04-29 2001-07-06 Valeo Thermique Moteur Sa FLEXIBLE TUBE HEAT EXCHANGER, PARTICULARLY FOR MOTOR VEHICLES
JP4335799B2 (en) * 2002-05-02 2009-09-30 シーメンス アクチエンゲゼルシヤフト Gradient coil system for magnetic resonance tomography equipment
DE10359573A1 (en) * 2003-12-18 2005-07-28 Robert Bosch Gmbh Heat transfer unit for a heat exchanger
EP2015017A1 (en) * 2007-07-12 2009-01-14 Hexion Specialty Chemicals Research Belgium S.A. Heat exchanger
US20110011558A1 (en) * 2009-07-15 2011-01-20 Don Dorrian Thermal conductivity pipe for geothermal applications
WO2011150081A2 (en) 2010-05-25 2011-12-01 7Ac Technologies, Inc. Methods and systems using liquid desiccants for air-conditioning and other processes
US9101875B2 (en) 2012-06-11 2015-08-11 7Ac Technologies, Inc. Methods and systems for turbulent, corrosion resistant heat exchangers
EP2929256A4 (en) 2012-12-04 2016-08-03 7Ac Technologies Inc Methods and systems for cooling buildings with large heat loads using desiccant chillers
JP6393697B2 (en) 2013-03-01 2018-09-19 ７エーシー テクノロジーズ，インコーポレイテッド Desiccant air conditioning method and system
EP3614072B1 (en) 2013-03-14 2022-06-22 Emerson Climate Technologies, Inc. Split liquid desiccant air conditioning system
EP2971984A4 (en) 2013-03-14 2017-02-01 7AC Technologies, Inc. Methods and systems for liquid desiccant air conditioning system retrofit
US9470426B2 (en) 2013-06-12 2016-10-18 7Ac Technologies, Inc. In-ceiling liquid desiccant air conditioning system
CN106164594B (en) 2014-03-20 2019-10-25 7Ac技术公司 Roof liquid desiccant systems and method
CN107110525B (en) 2014-11-21 2020-02-11 7Ac技术公司 Method and system for micro-fluidic desiccant air conditioning
US20170194679A1 (en) * 2015-12-30 2017-07-06 GM Global Technology Operations LLC Composite Heat Exchanger for Batteries and Method of Making Same
US10941948B2 (en) 2017-11-01 2021-03-09 7Ac Technologies, Inc. Tank system for liquid desiccant air conditioning system
KR102609680B1 (en) 2017-11-01 2023-12-05 코프랜드 엘피 Method and apparatus for uniform distribution of liquid desiccant in membrane modules of liquid desiccant air conditioning systems
US11022330B2 (en) 2018-05-18 2021-06-01 Emerson Climate Technologies, Inc. Three-way heat exchangers for liquid desiccant air-conditioning systems and methods of manufacture

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB816965A (en) * 1956-10-24 1959-07-22 Plessey Co Ltd Improvements in or relating to electrically resistive or conductive filaments
GB531112A (en) * 1939-07-12 1940-12-30 Walter Engel Improvement in or relating to the manufacture of heat exchange units
US2683669A (en) * 1950-04-15 1954-07-13 Myron A Coler Conductive plastics and method of making the same
BE504311A (en) * 1950-06-30 1900-01-01
US2878353A (en) * 1954-12-16 1959-03-17 Du Pont Electrical resistors
US2961712A (en) * 1957-07-10 1960-11-29 Polymer Corp Method of making filled polytetrafluoroethylene articles
US3272260A (en) * 1961-08-11 1966-09-13 Union Carbide Corp Corrosion resistant heat exchanger
BE632328A (en) * 1962-05-22 1900-01-01
NL151792C (en) * 1965-01-14
US3228456A (en) * 1965-03-01 1966-01-11 Du Pont Method and apparatus employing hollow polyfluorinated plastic filaments for heat exchange
GB1202301A (en) * 1967-07-29 1970-08-12 Werner & Pfleiderer A machine for continuously mixing blending and plasticising synthetic plastics compositions

Also Published As

Publication number Publication date
SE369442B (en) 1974-08-26
SE7406091L (en) 1974-05-07
BE771402A (en) 1972-02-17
DE2141019A1 (en) 1972-02-24
NL7111306A (en) 1972-02-21
CA940115A (en) 1974-01-15
DE2141019B2 (en) 1980-02-07
DE2141019C3 (en) 1986-07-31
US3718181A (en) 1973-02-27
FR2102305A1 (en) 1972-04-07
IT940439B (en) 1973-02-10
SE393766B (en) 1977-05-23
FR2102305B1 (en) 1975-07-11
JPS5517319B1 (en) 1980-05-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee