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

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) SE393766B (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
US4643244A (en) * 1984-11-07 1987-02-17 E. I. Du Pont De Nemours And Company Gas-liquid heat exchange process and apparatus
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
DE3614339A1 (en) * 1986-04-28 1987-10-29 Akzo Gmbh HEAT EXCHANGER AND METHOD FOR PRODUCING HEAT EXCHANGER
DE3614342A1 (en) * 1986-04-28 1987-10-29 Akzo Gmbh HEAT AND / OR FABRIC EXCHANGER AND METHOD FOR PRODUCING HEAT AND / OR FABRIC EXCHANGER
US4816331A (en) * 1987-01-02 1989-03-28 Ppg Industries, Inc. Electrostatic coating of pultruded articles
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
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
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
DE10391841D2 (en) * 2002-05-02 2005-04-07 Siemens Ag Gradient coil system for a magnetic resonance tomography device with more effective cooling
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
CN110220254A (en) * 2010-05-25 2019-09-10 7Ac技术公司 The method and system of air conditioning and other processing is carried out using liquid drier
ES2755800T3 (en) 2012-06-11 2020-04-23 7Ac Tech Inc Methods and systems for turbulent and corrosion resistant heat exchangers
US9506697B2 (en) 2012-12-04 2016-11-29 7Ac Technologies, Inc. Methods and systems for cooling buildings with large heat loads using desiccant chillers
CN108443996B (en) 2013-03-01 2021-04-20 7Ac技术公司 Desiccant air conditioning method and system
CN105121979B (en) 2013-03-14 2017-06-16 7Ac技术公司 For the method and system of differential body liquid drier air adjustment
WO2014152888A1 (en) 2013-03-14 2014-09-25 7 Ac Technologies, Inc. Methods and systems for liquid desiccant air conditioning system retrofit
ES2759926T3 (en) 2013-06-12 2020-05-12 7Ac Tech Inc Liquid Desiccant Air Conditioning System
EP3120083B1 (en) 2014-03-20 2020-07-01 7AC Technologies, Inc. Rooftop liquid desiccant systems and methods
WO2016081933A1 (en) 2014-11-21 2016-05-26 7Ac Technologies, Inc. Methods and systems for mini-split liquid 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
CN111448425A (en) 2017-11-01 2020-07-24 7Ac技术公司 Storage tank system for liquid desiccant air conditioning system
CN111373202B (en) 2017-11-01 2021-11-26 艾默生环境优化技术有限公司 Method and apparatus for uniform distribution of liquid desiccant in membrane modules in 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
NL7111306A (en) 1972-02-21
DE2141019C3 (en) 1986-07-31
CA940115A (en) 1974-01-15
FR2102305A1 (en) 1972-04-07
SE7406091L (en) 1974-05-07
BE771402A (en) 1972-02-17
IT940439B (en) 1973-02-10
DE2141019A1 (en) 1972-02-24
SE393766B (en) 1977-05-23
FR2102305B1 (en) 1975-07-11
JPS5517319B1 (en) 1980-05-10
DE2141019B2 (en) 1980-02-07
US3718181A (en) 1973-02-27

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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