GB1119518A - Anisotherm evaporation heat-transfer structure - Google Patents

Anisotherm evaporation heat-transfer structure

Info

Publication number
GB1119518A
GB1119518A GB52656/65A GB5265665A GB1119518A GB 1119518 A GB1119518 A GB 1119518A GB 52656/65 A GB52656/65 A GB 52656/65A GB 5265665 A GB5265665 A GB 5265665A GB 1119518 A GB1119518 A GB 1119518A
Authority
GB
United Kingdom
Prior art keywords
heat
protuberance
protuberances
vapour
temperature
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
GB52656/65A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Publication of GB1119518A publication Critical patent/GB1119518A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
    • G21C3/02—Fuel elements
    • G21C3/04—Constructional details
    • G21C3/06—Casings; Jackets
    • G21C3/08—Casings; Jackets provided with external means to promote heat-transfer, e.g. fins, baffles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/10—Water tubes; Accessories therefor
    • F22B37/101—Tubes having fins or ribs
    • 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
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • 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
    • F28F1/24—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 and extending transversely
    • F28F1/26—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 and extending transversely the means being integral with the element
    • 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
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Plasma & Fusion (AREA)
  • Geometry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

1,119,518. Heat exchange surfaces. COMPAGNIE FRANCAISE THOMSON HOUSTON-HOTCHKISS BRANDT. 10 Dec., 1965 [17 Dec., 1964], No. 52656/65. Heading F4S. [Also in Divisions F1 and H1] A heat conducting wall particularly in a steam generator or in an evaporator for liquids, is exposed on one side to a heat source and has its other side immersed in a vaporizable coolant liquid and formed with heat-dissipating protuberances adapted in operation to have substantial temperature gradients established over their side surfaces (e.g. the zones A, B, C, D see also Fig. 1, are of successively increasing temperature), each of the protuberances having tapering side surfaces and a base portion which adjoins the bases of neighbouring protuberances, and so proportioned as to satisfy the relation:- wherein b, S a and S 1 are the length from base to tip, base area and total side surface area, respectively, of a protuberance; c is the heat conductivity of the wall material; q is the critical flux density of the boiling liquid at the pressure of operation; # is the specified temperature drop from the base to the tip of a protuberance in operation; # is the nominal maximum heat flux to be applied to said side exposed to a heat source; k is a numerical safety factor selectable within the range 1 to 2 and p is the numerical efficiency factor selectable within the range from 0À8 to 1À6, the values of b, S a , S 1 , c, #, # and q being expressed in any coherent system of measuring units. Other applications mentioned are to wall structures in Diesel engines, and to the anode of a high power electronic transmitter tube. The drawing shows how at the end of each protuberance 4, vapour bubbles forming at the zones A-B coalesce into a vapour column 14 which is forcibly ejected from the surface. Ejection of the vapour columns causes an inflow 30 of coolant liquids towards the hottest zones C, D, and this flow combined with the radial outflow of vapour tends to break up the vapour film 15 on the sides of the protuberance particularly at the region M (see also Fig. 1) where a rapid change in the surface temperature of the wall material would otherwise occur with consequent damage thereto. The protuberances 4 may be arranged in rows aligned in two mutually perpendicular directions on the wall surface; or they may comprise elongated parallel ribs. The surface at the outer portion of the protuberance may be roughened. The heat capacity of the terminal portions of the protuberances may be enlarged, (Figs. 7 and 8). This it is stated lowers the temperature at these parts of the protrusion and improves the stability of the temperature gradient.
GB52656/65A 1964-12-17 1965-12-10 Anisotherm evaporation heat-transfer structure Expired GB1119518A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR999075A FR1444696A (en) 1964-12-17 1964-12-17 Improvements made to heat-dissipating walls and to devices comprising such walls

Publications (1)

Publication Number Publication Date
GB1119518A true GB1119518A (en) 1968-07-10

Family

ID=8845052

Family Applications (1)

Application Number Title Priority Date Filing Date
GB52656/65A Expired GB1119518A (en) 1964-12-17 1965-12-10 Anisotherm evaporation heat-transfer structure

Country Status (12)

Country Link
US (1) US3367415A (en)
AT (1) AT257543B (en)
BE (1) BE673484A (en)
CH (1) CH519694A (en)
DE (1) DE1501481C3 (en)
ES (1) ES320596A1 (en)
FR (1) FR1444696A (en)
GB (1) GB1119518A (en)
IL (1) IL24737A (en)
LU (1) LU50058A1 (en)
OA (1) OA02050A (en)
SE (1) SE313585B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2001160A (en) * 1977-07-13 1979-01-24 Carrier Corp Heat transfer surface and method of manufacture
CN104795115A (en) * 2015-04-07 2015-07-22 上海交通大学 Heat flow probe attaching device and method

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1550992A (en) * 1967-06-13 1968-12-27
DE1763698B1 (en) * 1968-07-19 1970-09-03 Bbc Brown Boveri & Cie Cooling device for self-cooled transformers
AU548348B2 (en) * 1983-12-21 1985-12-05 Air Products And Chemicals Inc. Finned heat exchanger
JPS60142195A (en) * 1983-12-28 1985-07-27 Hitachi Cable Ltd Heat transfer tube equipped with groove on internal surface thereof
DE19963374B4 (en) * 1999-12-28 2007-09-13 Alstom Device for cooling a flow channel wall surrounding a flow channel with at least one rib element
EP1729079A1 (en) * 2005-05-30 2006-12-06 Son S.R.L. Method for producing a heat exchange unit for a recovery steam generator, a heat exchange unit, a recovery steam generator and a tube for a heat exchange unit
US10697629B2 (en) * 2011-05-13 2020-06-30 Rochester Institute Of Technology Devices with an enhanced boiling surface with features directing bubble and liquid flow and methods thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2935305A (en) * 1950-07-07 1960-05-03 Gen Electric Electric discharge device cooling system
US2969957A (en) * 1956-01-10 1961-01-31 Thomson Houston Comp Francaise Electric discharge device cooling systems

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2001160A (en) * 1977-07-13 1979-01-24 Carrier Corp Heat transfer surface and method of manufacture
GB2001160B (en) * 1977-07-13 1982-10-13 Carrier Corp Heat exchange surface
CN104795115A (en) * 2015-04-07 2015-07-22 上海交通大学 Heat flow probe attaching device and method
CN104795115B (en) * 2015-04-07 2017-04-12 上海交通大学 Heat flow probe attaching device and method

Also Published As

Publication number Publication date
AT257543B (en) 1967-10-10
US3367415A (en) 1968-02-06
LU50058A1 (en) 1966-02-14
DE1501481A1 (en) 1969-09-18
DE1501481C3 (en) 1980-02-28
SE313585B (en) 1969-08-18
BE673484A (en) 1966-06-09
CH519694A (en) 1972-02-29
FR1444696A (en) 1966-07-08
DE1501481B2 (en) 1979-06-13
ES320596A1 (en) 1966-06-01
OA02050A (en) 1970-05-05
IL24737A (en) 1969-11-30

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