IL35557A - Heat transfer tube with porous boiling surface - Google Patents

Heat transfer tube with porous boiling surface

Info

Publication number
IL35557A
IL35557A IL35557A IL3555770A IL35557A IL 35557 A IL35557 A IL 35557A IL 35557 A IL35557 A IL 35557A IL 3555770 A IL3555770 A IL 3555770A IL 35557 A IL35557 A IL 35557A
Authority
IL
Israel
Prior art keywords
tube
convolutions
inches
inwardly extending
heat
Prior art date
Application number
IL35557A
Other versions
IL35557A0 (en
Original Assignee
Universal Oil Prod Co
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 by Universal Oil Prod Co filed Critical Universal Oil Prod Co
Publication of IL35557A0 publication Critical patent/IL35557A0/en
Publication of IL35557A publication Critical patent/IL35557A/en

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
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/18—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
    • F28F13/185—Heat-exchange surfaces provided with microstructures or with porous coatings
    • F28F13/187—Heat-exchange surfaces provided with microstructures or with porous coatings especially adapted for evaporator surfaces or condenser surfaces, e.g. with nucleation sites
    • 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
    • F28F1/08—Tubular elements crimped or corrugated in longitudinal section
    • 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
    • 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
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/085—Heat exchange elements made from metals or metal alloys from copper or copper alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2210/00—Heat exchange conduits
    • F28F2210/06—Heat exchange conduits having walls comprising obliquely extending corrugations, e.g. in the form of threads

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Powder Metallurgy (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Description

Heat transfer tube with porous boiling surface UNIVERSAL OIL PRODUCTS 55745 insufficientOCRQuality

Claims (10)

WHAT WE CLAIM 13:
1. A metallic heat exchange tube for conducting heat from a liquid flowing through the tube to a liquid in contact with the outer surface of the tube, said tube having its internal surface provided with a succession of generally circumferentially and inwardly extending convolutions proportioned to increase transfer of heat from the liquid flowing within the tube through the inner tube surface into the metal of the tube wall and provided on its outer surface with a continuous coating having a continuous substantially uniform thickness of .005 - .017" of a porous metallic material capable of increasing the transfer of heat from the metal of the tube wall through said coating into liquid in contact with the porous metallic coating.
2. A tube as defined in Claim 1 in which said tube is a thin-walled tube having a wall thickness of .020- .050 inches.
3. A tube as defined in Claim 2 in which said tube is corrugated, having outwardly and circumferentially extending convolutions disposed in alignment with the spaces between the inwardly extending convolutions at the interior of the tube.
4. A tube as defined in Claim 3 ia which said convolutions are helical.
5. A tube as defined in Claim 3 in which said convolutions are in the form of aingle-start helices.
6. A tube as defined in Claim 2 in which said tube has an outside diameter of .250 - 1.250 inches.
7. A tube as defined in Claim 6 in which said inwardly extending convolutions have a height of 1/64 - 3/64 inches. 35557/2
8. A tube aa defined in Claia 6 in which said Inwardly extending convolutions have an axial spacing between adjacent convolutions of 1/8 - 3/8 inches.
9. A tube as defined in Claim 5 in which the corrugations are in the form of a single-start helix having a height of 1/64 - 3/64 inches.
10. A tube as defined in Claim 9 n which said helix has a lead of 1/8 - 3/8 inches. For fhe Applicants DR. EINHOLD COHN AND PARTNERS B y : ^
IL35557A 1970-01-12 1970-10-29 Heat transfer tube with porous boiling surface IL35557A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US214170A 1970-01-12 1970-01-12

Publications (2)

Publication Number Publication Date
IL35557A0 IL35557A0 (en) 1970-12-24
IL35557A true IL35557A (en) 1973-11-28

Family

ID=21699400

Family Applications (1)

Application Number Title Priority Date Filing Date
IL35557A IL35557A (en) 1970-01-12 1970-10-29 Heat transfer tube with porous boiling surface

Country Status (10)

Country Link
AT (1) AT299997B (en)
BE (1) BE760930A (en)
BR (1) BR7100156D0 (en)
CH (1) CH525454A (en)
DE (1) DE2101204A1 (en)
ES (1) ES164621Y (en)
FR (1) FR2076034B1 (en)
GB (1) GB1267139A (en)
IL (1) IL35557A (en)
ZA (1) ZA707466B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE437614C (en) * 1978-07-25 1986-10-06 Hisaka Works Ltd PLATTERY VAPOR
DE3010450A1 (en) * 1980-03-19 1981-09-24 Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover PIPE FOR HEAT EXCHANGER PURPOSES, ESPECIALLY FOR EVAPORATORS
DE102007059153A1 (en) * 2007-12-06 2009-06-10 Erk Eckrohrkessel Gmbh Process for increasing the efficiency of the heat and mass transport and the chemical reactivity and selectivity of systems for the transfer of heat energy and systems for technical reaction, in particular heterogeneous catalysis, used with formed structures molded components and methods for the production of microstructures on these components

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3088494A (en) * 1959-12-28 1963-05-07 Babcock & Wilcox Co Ribbed vapor generating tubes
US3095255A (en) * 1960-04-25 1963-06-25 Carrier Corp Heat exchange apparatus of the evaporative type
CA923388A (en) * 1968-05-20 1973-03-27 M. Czikk Alfred Heat transfer process
GB1230196A (en) * 1968-05-31 1971-04-28

Also Published As

Publication number Publication date
GB1267139A (en) 1972-03-15
AT299997B (en) 1972-07-10
IL35557A0 (en) 1970-12-24
CH525454A (en) 1972-07-15
FR2076034B1 (en) 1975-01-10
BE760930A (en) 1971-06-28
ES164621Y (en) 1971-09-16
BR7100156D0 (en) 1973-04-19
ES164621U (en) 1971-03-16
DE2101204A1 (en) 1971-07-22
FR2076034A1 (en) 1971-10-15
ZA707466B (en) 1971-07-28

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