US3612175A - Corrugated metal tubing - Google Patents
Corrugated metal tubing Download PDFInfo
- Publication number
- US3612175A US3612175A US838172A US3612175DA US3612175A US 3612175 A US3612175 A US 3612175A US 838172 A US838172 A US 838172A US 3612175D A US3612175D A US 3612175DA US 3612175 A US3612175 A US 3612175A
- Authority
- US
- United States
- Prior art keywords
- tubing
- improved
- grooves
- tube
- heat
- 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 - Lifetime
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 13
- 239000002184 metal Substances 0.000 title claims abstract description 13
- 239000000956 alloy Substances 0.000 claims description 9
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 3
- 230000001747 exhibiting effect Effects 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 235000012206 bottled water Nutrition 0.000 description 2
- 238000011033 desalting Methods 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 244000239634 longleaf box Species 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- 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
-
- 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
- F28F1/34—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 obliquely
- F28F1/36—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 obliquely the means being helically wound fins or wire spirals
-
- 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
- F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
-
- 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
- Y10S165/532—Heat exchange conduit structure
- Y10S165/535—Helically formed
Definitions
- ABSTRACT The instant disclosure teaches an improved cor- U-S. mgated meta] tubing having an improved heabtransfer coefi'i- 138/38 cient and having a plurality of lands and grooves extending [51] lnt.Cl F281 l/42 along the circumference th f
- the grooves comprise at [50] Field of Search 138/38; least we independent continuous grooves extending helically 165/177 156 along the circumference of the tube, with each groove being in [56] References Cited spaced relationship to each other. Improved heat transfer is obtained by providing that the land width, the groove width UNITED STATES PATENTS and the angle of advance of the helically extending grooves are related in a particular defined manner.
- corrugated tubing or surface enhancement provides an improved heat-transfer coefficient as compared to a plain cylindrical tube.
- a further object of the present invention is toprovide a large increase in heat transfer with a minimum increase in pressure drop.
- FIG. 1 graphically represents heat-transfer data from the examples which form a part of the present specification.
- FIG. 2 shows a side view of a portion of representative tubing of the present invention.
- the tubing of the present invention comprises a hollow corrugated tube having a plurality of lands and grooves extending along the circumference thereof, said grooves comprising at least two independent, continuous grooves extending helically along the circumference of the tube, with each groove being in spaced relationship to each other, with said tubing satisfying the following formula:
- the grooves comprise three independent, continuous grooves extending helically along the circumference of the tube, with each groove being in spaced relationship to each other.
- corrugated metal tubing achieves a surprising high heat-transfer coefficient. This surprising heat-transfer coefficient could not be anticipated even in view of the improved heat-transfer coefficient obtained by corrugated tubing in general.
- a further advantage of the improved heat-transfer coefficient is the resultant equipment savings and many other cost savings in heat exchange machinery. This is especially important in cases where large capital investment is required.
- the metal tubing may be corrugated by any method known in the art.
- a particularly preferred method and apparatus is shown in copending application Ser. No. 679,459, now abandoned, by Joseph Winter for "Apparatus For Forming Corrugated Tubing.”
- corrugated tubing is produced by an apparatus characterized by having an inner frame movably mounted on an outer frame, with a die rotatably mounted on the inner frame.
- the die has an annular opening through which passes the tube to be corrugated and shaped die members projecting into the annular opening.
- the pitch and depth of the spirals or corrugations can be adjusted and controlled over a wide range of configurations.
- the resultant corrugated tubing is characterized by having a plurality of lands and grooves extending helically along the circumference thereof.
- the tube In cross section, the tube has a plurality of uniform, symmetrical, wavelike in, dentations, with the wall thickness of the tube being approxi mately uniform throughout.
- the grooves comprise a plurality of independent, continuous grooves extending helically along the circumference of the tube, with each groove being in spaced relationship to each other.
- the tubing of the present invention may be made of a wide variety of metals and their alloys. For example, copper and its alloys, aluminum and its alloys, titanium and its'alloys, iron and its alloys and so forth. Corrugated tubing made from welded seam tubemay be readily used. 7
- the corrugated tubing of the present invention should preferably have a wall thickness from 0.010 inch to 0.50 inch and an outside diameter of from 0.25 inch to 10.5 inch.
- tubing when tubing is corrugated normally a section of the tubing is left uncorrugated to provide a plain undistorted tube wall at each end of the corrugated tubing for a locus for sealing into a tube sheet.
- a multitude of tubes are conventionally attached to tube sheets which separate the heat-transfer media on the outside from the heat-transfer media on the insideof the tubes.
- the tubes are normally sealed at the point between the heat exchange tubes and the tube sheet by rolling in the tubes or by welding or by brazing.
- L.W./G.W. (L.W./G.W.)-H 0x0.03) From 0.5 to 2.25
- L.W. refers to the land width in inches, with the land being measured at right angles instead of along the tube axis.
- G.W. refers to the groove width measured in the same manner.
- 0 refers to the angle of advance of the helically extending grooves from a right angle to the tube axis. ln general, it can be stated that the lower the value of (L.W.IG.W.'), the better the heat-transfer coefficient. It may be hypothesized that the lower values of L.W./G.W.
- FIG. 2 wherein reference numeral 1 shows the plain uncorrugated end'and reference numeral 2 shows the corrugated portion. This is particularly apparent with respect to the heat-transfer coefficient on the steam side.
- the pressure drop, AP should be kept at a reasonable value, preferably between 0.6 and 4.5 at 6 feet per second of water.
- EXAMPLE I utilizes a copper base alloy having the following'composition: iron, 2.3 percent; phosphorus, 0.025 percent; copper essentially balance.
- Several pieces of seamwelded tubing were prepared from the foregoing alloy having a tube length of 42 inches. The tubing had a 1-inch OD. and a wall thickness of 0.049 inch. Some of the tubing was formed characteristics thereof.
- the present embodiment is therefore to be considered as in all respects illustrative and not restrictive. the scope of the invention being indicated by the appended claims, and all changes which come within the meaninto corrugated tubing havinga plurality of lands and grooves 5 ing and range of equivalency are intended to be embraced extending along the circumference thereof with the grooves therein.
- the corrugated tubing of the characteristics comprising: a hollow corrugated metal tube present invention generally exhibited no change in weight per l havin a plurality of lands and grooves extending along the cir- Unlt g the corrugated tubing had 110 greater Surface cumference thereof, wherein there is relatively larger groove area in one part.
- the convoluted section of the tube was about id h i l i n to relatively smaller land widths, said 33 inches long.
- the corrugated tubing had about a 4 to inch ooves comprising at least two independent, continuous plain section on either end. grooves extending helically along the circumference of the
- Tube A represents plain, uncorru- 1 tube with each groove being in spaced relationship to each gated tubings; tubes B-I represent the tubing of the present inother, said tubing exhibiting substantially no change in weight vention; and tubes represent mp r i ing. per unit length, with said tubing satisfying the following for- TABLE 1 Bore Weight Angle Groove Width, inches dlarnper of ad- Number Pitch, depth, eter, foot, Vance, Tube of leads inch inches Land Groove inches 1b.
- the 33g 51 values in table II set out below are for a velocity of 6 feet per 1,215 1 1. 02 second.
- This invention may be embodied in other forms or carried out in other ways without departing from the spirit or essential thickness of from 0.010 to 0.50 inch.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US83817269A | 1969-07-01 | 1969-07-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3612175A true US3612175A (en) | 1971-10-12 |
Family
ID=25276459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US838172A Expired - Lifetime US3612175A (en) | 1969-07-01 | 1969-07-01 | Corrugated metal tubing |
Country Status (6)
Country | Link |
---|---|
US (1) | US3612175A (es) |
JP (1) | JPS5125620B1 (es) |
CA (1) | CA922248A (es) |
DE (1) | DE2032641A1 (es) |
FR (1) | FR2065666B1 (es) |
GB (1) | GB1258038A (es) |
Cited By (69)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3743328A (en) * | 1971-07-26 | 1973-07-03 | E Longfellow | Gas appliance connector |
US3779312A (en) * | 1972-03-07 | 1973-12-18 | Universal Oil Prod Co | Internally ridged heat transfer tube |
US3789915A (en) * | 1971-04-23 | 1974-02-05 | Olin Corp | Process for improving heat transfer efficiency and improved heat transfer system |
US3817319A (en) * | 1971-11-15 | 1974-06-18 | Kabel Metallwerke Ghh | Conduction of heat exchange fluids |
US3841136A (en) * | 1972-03-07 | 1974-10-15 | Universal Oil Prod Co | Method of designing internally ridged heat transfer tube for optimum performance |
US3847212A (en) * | 1973-07-05 | 1974-11-12 | Universal Oil Prod Co | Heat transfer tube having multiple internal ridges |
US3875997A (en) * | 1970-06-30 | 1975-04-08 | Atomic Energy Authority Uk | Tubular heat transfer members |
US4118944A (en) * | 1977-06-29 | 1978-10-10 | Carrier Corporation | High performance heat exchanger |
US4132264A (en) * | 1974-12-20 | 1979-01-02 | Ecodyne Corporation | Plastic heat exchange tube |
US4305460A (en) * | 1979-02-27 | 1981-12-15 | General Atomic Company | Heat transfer tube |
US4380912A (en) * | 1979-03-05 | 1983-04-26 | Edwards Engineering Corp. | Double wall tube assembly for use in heat exchangers |
US4425942A (en) | 1980-12-24 | 1984-01-17 | Wieland-Werke A.G. | Finned tube for a heat exchanger |
US4480684A (en) * | 1979-05-16 | 1984-11-06 | Daikin Kogyo Co., Ltd. | Heat exchanger for air conditioning system |
US4622140A (en) * | 1974-03-19 | 1986-11-11 | Extracorporeal Medical Specialties, Inc. | Device useful in the treatment of blood |
US4699211A (en) * | 1983-02-28 | 1987-10-13 | Baltimore Aircoil Company, Inc. | Segmental baffle high performance shell and tube heat exchanger |
US5181560A (en) * | 1990-10-17 | 1993-01-26 | Burn Mark N | Baffleless tube and shell heat exchanger having fluted tubes |
DE4420756C1 (de) * | 1994-06-15 | 1995-11-30 | Wieland Werke Ag | Mehrgängiges Rippenrohr und Verfahren zu dessen Herstellung |
US5542413A (en) * | 1995-03-10 | 1996-08-06 | Horn; Stephen T. | Personal cooling apparatus |
US5638898A (en) * | 1994-12-08 | 1997-06-17 | Gu; Guang-Rui | Shell-and-tube heat exchanger with corrugated heat transfer tubes |
US5655599A (en) * | 1995-06-21 | 1997-08-12 | Gas Research Institute | Radiant tubes having internal fins |
US5960870A (en) * | 1997-01-27 | 1999-10-05 | Kabushiki Kaisha Kobe Seiko Sho | Heat transfer tube for absorber |
US6475231B2 (en) | 1998-03-24 | 2002-11-05 | Innercool Therapies, Inc. | Method and device for applications of selective organ cooling |
US6482226B1 (en) | 1998-01-23 | 2002-11-19 | Innercool Therapies, Inc. | Selective organ hypothermia method and apparatus |
US6491039B1 (en) | 1998-01-23 | 2002-12-10 | Innercool Therapies, Inc. | Medical procedure |
US20020193854A1 (en) * | 1998-01-23 | 2002-12-19 | Innercool Therapies, Inc. | Selective organ cooling catheter with guidewire apparatus and temperature-monitoring device |
US6533804B2 (en) | 1998-01-23 | 2003-03-18 | Innercool Therapies, Inc. | Inflatable catheter for selective organ heating and cooling and method of using the same |
US6551349B2 (en) | 1998-03-24 | 2003-04-22 | Innercool Therapies, Inc. | Selective organ cooling apparatus |
US6558412B2 (en) | 1998-01-23 | 2003-05-06 | Innercool Therapies, Inc. | Selective organ hypothermia method and apparatus |
US6576001B2 (en) | 2000-03-03 | 2003-06-10 | Innercool Therapies, Inc. | Lumen design for catheter |
US6576002B2 (en) | 1998-03-24 | 2003-06-10 | Innercool Therapies, Inc. | Isolated selective organ cooling method and apparatus |
US6585752B2 (en) | 1998-06-23 | 2003-07-01 | Innercool Therapies, Inc. | Fever regulation method and apparatus |
US6595967B2 (en) | 2001-02-01 | 2003-07-22 | Innercool Therapies, Inc. | Collapsible guidewire lumen |
US6599312B2 (en) | 1998-03-24 | 2003-07-29 | Innercool Therapies, Inc. | Isolated selective organ cooling apparatus |
US6602276B2 (en) | 1998-03-31 | 2003-08-05 | Innercool Therapies, Inc. | Method and device for performing cooling- or cryo-therapies for, e.g., angioplasty with reduced restenosis or pulmonary vein cell necrosis to inhibit atrial fibrillation |
US6648906B2 (en) | 2000-04-06 | 2003-11-18 | Innercool Therapies, Inc. | Method and apparatus for regulating patient temperature by irrigating the bladder with a fluid |
US6660028B2 (en) | 2000-06-02 | 2003-12-09 | Innercool Therapies, Inc. | Method for determining the effective thermal mass of a body or organ using a cooling catheter |
US6676690B2 (en) | 1999-10-07 | 2004-01-13 | Innercool Therapies, Inc. | Inflatable heat transfer apparatus |
US6676688B2 (en) | 1998-01-23 | 2004-01-13 | Innercool Therapies, Inc. | Method of making selective organ cooling catheter |
US6685732B2 (en) | 1998-03-31 | 2004-02-03 | Innercool Therapies, Inc. | Method and device for performing cooling- or cryo-therapies for, e.g., angioplasty with reduced restenosis or pulmonary vein cell necrosis to inhibit atrial fibrillation employing microporous balloon |
US6692488B2 (en) | 1998-01-23 | 2004-02-17 | Innercool Therapies, Inc. | Apparatus for cell necrosis |
US6702841B2 (en) | 1998-01-23 | 2004-03-09 | Innercool Therapies, Inc. | Method of manufacturing a heat transfer element for in vivo cooling |
US6702842B2 (en) | 1998-01-23 | 2004-03-09 | Innercool Therapies, Inc. | Selective organ cooling apparatus and method |
US6719723B2 (en) | 2000-12-06 | 2004-04-13 | Innercool Therapies, Inc. | Multipurpose catheter assembly |
US20040210285A1 (en) * | 2002-04-04 | 2004-10-21 | Steven Yon | Method of manufacturing a heat transfer element for in vivo cooling without undercuts |
US6830581B2 (en) | 1999-02-09 | 2004-12-14 | Innercool Therspies, Inc. | Method and device for patient temperature control employing optimized rewarming |
US6869440B2 (en) | 1999-02-09 | 2005-03-22 | Innercool Therapies, Inc. | Method and apparatus for patient temperature control employing administration of anti-shivering agents |
US6905494B2 (en) | 1998-03-31 | 2005-06-14 | Innercool Therapies, Inc. | Method and device for performing cooling- or cryo-therapies for, e.g., angioplasty with reduced restenosis or pulmonary vein cell necrosis to inhibit atrial fibrillation employing tissue protection |
US6991645B2 (en) | 1998-01-23 | 2006-01-31 | Innercool Therapies, Inc. | Patient temperature regulation method and apparatus |
US7001378B2 (en) | 1998-03-31 | 2006-02-21 | Innercool Therapies, Inc. | Method and device for performing cooling or cryo-therapies, for, e.g., angioplasty with reduced restenosis or pulmonary vein cell necrosis to inhibit atrial fibrillation employing tissue protection |
US7018399B2 (en) | 1998-06-23 | 2006-03-28 | Innercool Therapies, Inc. | Method of making selective organ cooling catheter |
US7041218B1 (en) | 2002-06-10 | 2006-05-09 | Inflowsion, L.L.C. | Static device and method of making |
US7045060B1 (en) | 2002-12-05 | 2006-05-16 | Inflowsion, L.L.C. | Apparatus and method for treating a liquid |
US7101386B2 (en) | 1998-01-23 | 2006-09-05 | Innercool Therapies, Inc. | Patient temperature regulation method and apparatus |
US20070017588A1 (en) * | 2003-07-22 | 2007-01-25 | Aloys Wobben | Flow channel for liquids |
US20070028984A1 (en) * | 2003-03-18 | 2007-02-08 | Imperial College Innovations Limited | Helical piping |
US7264394B1 (en) * | 2002-06-10 | 2007-09-04 | Inflowsion L.L.C. | Static device and method of making |
US7291144B2 (en) | 1998-03-31 | 2007-11-06 | Innercool Therapies, Inc. | Method and device for performing cooling- or cryo-therapies for, e.g., angioplasty with reduced restenosis or pulmonary vein cell necrosis to inhibit atrial fibrillation |
US7371254B2 (en) | 1998-01-23 | 2008-05-13 | Innercool Therapies, Inc. | Medical procedure |
US7422600B2 (en) | 1999-02-09 | 2008-09-09 | Innercool Therapies, Inc. | Method and apparatus for patient temperature control employing administration of anti-shivering agents |
US20080257436A1 (en) * | 2004-09-21 | 2008-10-23 | Caro Colin G | Piping |
US20090095594A1 (en) * | 2004-09-21 | 2009-04-16 | Heliswirl Technologies Limited | Cracking furnace |
US7857781B2 (en) | 1998-04-21 | 2010-12-28 | Zoll Circulation, Inc. | Indwelling heat exchange catheter and method of using same |
USRE43650E1 (en) | 2004-09-21 | 2012-09-11 | Technip France S.A.S. | Piping |
USD668323S1 (en) * | 2011-03-23 | 2012-10-02 | Nippon Steel Corporation | Dented steel pipe |
USD669160S1 (en) * | 2011-01-07 | 2012-10-16 | Nippon Steel Corporation | Dimpled steel pipe |
US8354084B2 (en) | 2008-09-19 | 2013-01-15 | Technip France S.A.S. | Cracking furnace |
US20140290786A1 (en) * | 2013-03-29 | 2014-10-02 | Sony Corporation | Microfluidic channel and microfluidic device |
US20170136202A1 (en) * | 2011-12-22 | 2017-05-18 | Vyaire Medical Consumables Llc | Apparatus for fluid tube |
US10024572B1 (en) | 2012-12-20 | 2018-07-17 | Htp, Inc. | Heat exchanger |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03202719A (ja) * | 1989-12-29 | 1991-09-04 | Hoya Corp | 溶融ガラス液位計 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US85149A (en) * | 1868-12-22 | Improvement in tubes for steam-generators | ||
US249547A (en) * | 1881-11-15 | John a | ||
US770599A (en) * | 1904-09-20 | Half to e | ||
US1777782A (en) * | 1929-02-11 | 1930-10-07 | Bundy Tubing Co | Externally and internally finned tube and method therefor |
US2913009A (en) * | 1956-07-16 | 1959-11-17 | Calumet & Hecla | Internal and internal-external surface heat exchange tubing |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR959916A (es) * | 1950-04-07 | |||
US3025685A (en) * | 1960-02-03 | 1962-03-20 | Arkla Ind | Means for wetting surfaces |
-
1969
- 1969-07-01 US US838172A patent/US3612175A/en not_active Expired - Lifetime
-
1970
- 1970-06-19 GB GB1258038D patent/GB1258038A/en not_active Expired
- 1970-06-29 JP JP45056118A patent/JPS5125620B1/ja active Pending
- 1970-06-29 FR FR7024019A patent/FR2065666B1/fr not_active Expired
- 1970-06-30 CA CA087030A patent/CA922248A/en not_active Expired
- 1970-07-01 DE DE19702032641 patent/DE2032641A1/de active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US85149A (en) * | 1868-12-22 | Improvement in tubes for steam-generators | ||
US249547A (en) * | 1881-11-15 | John a | ||
US770599A (en) * | 1904-09-20 | Half to e | ||
US1777782A (en) * | 1929-02-11 | 1930-10-07 | Bundy Tubing Co | Externally and internally finned tube and method therefor |
US2913009A (en) * | 1956-07-16 | 1959-11-17 | Calumet & Hecla | Internal and internal-external surface heat exchange tubing |
Cited By (114)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3875997A (en) * | 1970-06-30 | 1975-04-08 | Atomic Energy Authority Uk | Tubular heat transfer members |
US3789915A (en) * | 1971-04-23 | 1974-02-05 | Olin Corp | Process for improving heat transfer efficiency and improved heat transfer system |
US3743328A (en) * | 1971-07-26 | 1973-07-03 | E Longfellow | Gas appliance connector |
US3817319A (en) * | 1971-11-15 | 1974-06-18 | Kabel Metallwerke Ghh | Conduction of heat exchange fluids |
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Also Published As
Publication number | Publication date |
---|---|
DE2032641A1 (de) | 1971-01-14 |
JPS5125620B1 (es) | 1976-08-02 |
CA922248A (en) | 1973-03-06 |
FR2065666B1 (es) | 1975-06-06 |
GB1258038A (es) | 1971-12-22 |
FR2065666A1 (es) | 1971-08-06 |
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