GB1251095A - - Google Patents

Info

Publication number
GB1251095A
GB1251095A GB1251095DA GB1251095A GB 1251095 A GB1251095 A GB 1251095A GB 1251095D A GB1251095D A GB 1251095DA GB 1251095 A GB1251095 A GB 1251095A
Authority
GB
United Kingdom
Prior art keywords
section
pipe
ferromagnetic
pipes
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
Application number
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 GB1251095A publication Critical patent/GB1251095A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/105—Induction heating apparatus, other than furnaces, for specific applications using a susceptor
    • H05B6/108—Induction heating apparatus, other than furnaces, for specific applications using a susceptor for heating a fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
    • F16L53/30—Heating of pipes or pipe systems
    • F16L53/34—Heating of pipes or pipe systems using electric, magnetic or electromagnetic fields, e.g. using induction, dielectric or microwave heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D13/00—Electric heating systems
    • F24D13/02—Electric heating systems solely using resistance heating, e.g. underfloor heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D13/00—Electric heating systems
    • F24D13/02—Electric heating systems solely using resistance heating, e.g. underfloor heating
    • F24D13/022—Electric heating systems solely using resistance heating, e.g. underfloor heating resistances incorporated in construction elements
    • F24D13/024—Electric heating systems solely using resistance heating, e.g. underfloor heating resistances incorporated in construction elements in walls, floors, ceilings
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • General Induction Heating (AREA)

Abstract

1,251,095. Heat generating pipes. CHISSO CORP. 29 Oct., 1969 [29 Oct., 1968], No. 53083/69. Heading H5M. In order to satisfy the differing demands for heat along the length of a heat generating pipe of the type comprising a ferromagnetic pipe supplied with alternating heating current confined to the inside of the wall of the pipe by an inner insulated conductor supplied with A.C., one or more of the following factors is varied in accordance with the heat demand of a particular section of the heat generating pipe, during installation; the cross-sectional area of the insulated conductor; the resistivity of the insulated conductor; the magnetic permeability of the ferromagnetic pipe; the resistivity of the ferromagnetic pipe; and the inside diameter of the ferromagnetic pipe. The amplitude and frequency of the currents flowing in inner conductor and ferromagnetic pipes must be kept constant throughout their lengths. As shown, the heating pipe is installed in a fluid pipeline which has a section above ground and a section below ground which requires less heat because of the thermal insulation provided by the soil 10. It is possible to obviate temperature changes of the fluid in the two sections by using a better thermal insulator for the lagging 11 in exposed section than the buried section. However, according to the invention it is preferred to generate more heat in section 1 of the ferromagnetic pipe than section 1<SP>1</SP> by making section 1 of a material of high resistivity and/or permeability by making the inside diameter of section 1 less than section 1<SP>1</SP>, or by making the inner conductor 2 in section 1 of greater resistivity than the inner conductor 2<SP>1</SP> in section 1<SP>1</SP>. It is most convenient to use steel pipes from stock and to use different inside diameter pipes for the sections 1, 1<SP>1</SP>. The inner conductor 2, 2<SP>1</SP> may be electrically in series with the ferromagnetic pipe 1, 1<SP>1</SP> or it may be connected to an A.C. supply and pass through two ferromagnetic pipes lying side by side and connected electrically at their ends so that heating current is induced in the inside skin of the walls of the pipes as in Specification 1,218,216. The ferromagnetic pipe is preferably filled with a good thermal conductor e.g. water, oil or other liquid to transfer the heat of the inner conductor to the ferromagnetic pipe. Applications specified are preventing freezing, heating roads, walls, floors, roofs, runways, railways, bridges transmission lines and tanks.
GB1251095D 1968-10-29 1969-10-29 Expired GB1251095A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7873568 1968-10-29

Publications (1)

Publication Number Publication Date
GB1251095A true GB1251095A (en) 1971-10-27

Family

ID=13670125

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1251095D Expired GB1251095A (en) 1968-10-29 1969-10-29

Country Status (4)

Country Link
US (1) US3629551A (en)
DE (1) DE1954458B2 (en)
FR (1) FR2021838A1 (en)
GB (1) GB1251095A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2178254A (en) * 1985-06-28 1987-02-04 Edward James Williams Electric liquid-heating apparatus

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CA1064561A (en) * 1974-11-04 1979-10-16 Paul F. Offermann Method and means for segmentally reducing heat output in heat-tracing pipe
US3983360A (en) * 1974-11-27 1976-09-28 Chevron Research Company Means for sectionally increasing the heat output in a heat-generating pipe
US4142093A (en) * 1976-02-05 1979-02-27 Chevron Research Company Method and means for segmentally reducing heat output in a heat-tracing pipe
US4408117A (en) * 1980-05-28 1983-10-04 Yurkanin Robert M Impedance heating system with skin effect particularly for railroad tank cars
US4456186A (en) * 1981-03-09 1984-06-26 Chisso Engineering Co. Ltd. Electrically heated reactor for high temperature and pressure chemical reactions
WO1984004698A1 (en) * 1983-05-26 1984-12-06 Metcal Inc Self-regulating porous heater device
BR9004240A (en) * 1990-08-28 1992-03-24 Petroleo Brasileiro Sa ELECTRIC PIPE HEATING PROCESS
ATE315715T1 (en) 2000-04-24 2006-02-15 Shell Int Research APPARATUS AND METHOD FOR TREATING PETROLEUM RESERVES
US6918442B2 (en) 2001-04-24 2005-07-19 Shell Oil Company In situ thermal processing of an oil shale formation in a reducing environment
US6592288B2 (en) * 2001-10-18 2003-07-15 Joong H. Chun High-traction anti-icing roadway cover system
CA2462971C (en) * 2001-10-24 2015-06-09 Shell Canada Limited Installation and use of removable heaters in a hydrocarbon containing formation
DE10244150A1 (en) * 2002-09-23 2004-04-08 Schmidt + Clemens Gmbh & Co. Kg Pipe section for a coil
US8200072B2 (en) 2002-10-24 2012-06-12 Shell Oil Company Temperature limited heaters for heating subsurface formations or wellbores
NZ543753A (en) 2003-04-24 2008-11-28 Shell Int Research Thermal processes for subsurface formations
AU2005238941B2 (en) 2004-04-23 2008-11-13 Shell Internationale Research Maatschappij B.V. Temperature limited heaters used to heat subsurface formations
US7860377B2 (en) 2005-04-22 2010-12-28 Shell Oil Company Subsurface connection methods for subsurface heaters
EP1871986A1 (en) 2005-04-22 2008-01-02 Shell Internationale Research Maatschappij B.V. Varying properties along lengths of temperature limited heaters
AU2006306476B2 (en) 2005-10-24 2010-08-19 Shell Internationale Research Maatschappij B.V. Methods of cracking a crude product to produce additional crude products
EP2010754A4 (en) 2006-04-21 2016-02-24 Shell Int Research Adjusting alloy compositions for selected properties in temperature limited heaters
RU2447275C2 (en) 2006-10-20 2012-04-10 Шелл Интернэшнл Рисерч Маатсхаппий Б.В. Heating of bituminous sand beds with pressure control
AU2008242797B2 (en) 2007-04-20 2011-07-14 Shell Internationale Research Maatschappij B.V. In situ recovery from residually heated sections in a hydrocarbon containing formation
WO2009052054A1 (en) 2007-10-19 2009-04-23 Shell Oil Company Systems, methods, and processes utilized for treating subsurface formations
NO328383B1 (en) * 2008-02-15 2010-02-08 Nexans Direct electric heating system with high efficiency
AU2009251533B2 (en) 2008-04-18 2012-08-23 Shell Internationale Research Maatschappij B.V. Using mines and tunnels for treating subsurface hydrocarbon containing formations
BRPI0920141A2 (en) 2008-10-13 2017-06-27 Shell Int Research system and method for treating subsurface formation.
CA2758192A1 (en) 2009-04-10 2010-10-14 Shell Internationale Research Maatschappij B.V. Treatment methodologies for subsurface hydrocarbon containing formations
US9466896B2 (en) * 2009-10-09 2016-10-11 Shell Oil Company Parallelogram coupling joint for coupling insulated conductors
US8257112B2 (en) 2009-10-09 2012-09-04 Shell Oil Company Press-fit coupling joint for joining insulated conductors
US8356935B2 (en) * 2009-10-09 2013-01-22 Shell Oil Company Methods for assessing a temperature in a subsurface formation
US8701768B2 (en) 2010-04-09 2014-04-22 Shell Oil Company Methods for treating hydrocarbon formations
US8939207B2 (en) 2010-04-09 2015-01-27 Shell Oil Company Insulated conductor heaters with semiconductor layers
US8820406B2 (en) 2010-04-09 2014-09-02 Shell Oil Company Electrodes for electrical current flow heating of subsurface formations with conductive material in wellbore
US8502120B2 (en) 2010-04-09 2013-08-06 Shell Oil Company Insulating blocks and methods for installation in insulated conductor heaters
US8631866B2 (en) 2010-04-09 2014-01-21 Shell Oil Company Leak detection in circulated fluid systems for heating subsurface formations
US9033042B2 (en) 2010-04-09 2015-05-19 Shell Oil Company Forming bitumen barriers in subsurface hydrocarbon formations
US8943686B2 (en) 2010-10-08 2015-02-03 Shell Oil Company Compaction of electrical insulation for joining insulated conductors
US8857051B2 (en) 2010-10-08 2014-10-14 Shell Oil Company System and method for coupling lead-in conductor to insulated conductor
US8586867B2 (en) 2010-10-08 2013-11-19 Shell Oil Company End termination for three-phase insulated conductors
AU2012240160B2 (en) 2011-04-08 2015-02-19 Shell Internationale Research Maatschappij B.V. Systems for joining insulated conductors
US9016370B2 (en) 2011-04-08 2015-04-28 Shell Oil Company Partial solution mining of hydrocarbon containing layers prior to in situ heat treatment
JO3139B1 (en) 2011-10-07 2017-09-20 Shell Int Research Forming insulated conductors using a final reduction step after heat treating
JO3141B1 (en) 2011-10-07 2017-09-20 Shell Int Research Integral splice for insulated conductors
US9309755B2 (en) 2011-10-07 2016-04-12 Shell Oil Company Thermal expansion accommodation for circulated fluid systems used to heat subsurface formations
US9080917B2 (en) 2011-10-07 2015-07-14 Shell Oil Company System and methods for using dielectric properties of an insulated conductor in a subsurface formation to assess properties of the insulated conductor
CA2862463A1 (en) 2012-01-23 2013-08-01 Genie Ip B.V. Heater pattern for in situ thermal processing of a subsurface hydrocarbon containing formation
EP3334969B1 (en) * 2015-08-10 2022-02-09 National Oilwell Varco Denmark I/S An unbonded flexible pipe

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1722797A (en) * 1925-11-10 1929-07-30 Western Electric Co Method of and apparatus for applying and baking an insulating enamel coating
US2561249A (en) * 1949-02-07 1951-07-17 Edward R Tomlinson Heater for oil well tubing
GB756945A (en) * 1953-06-25 1956-09-12 Albert Alexander Fisher Improvements relating to electric heating of fluids
CH386586A (en) * 1959-11-03 1965-01-15 Z Elektrotepelnych Zarizeni Ze Device for inductive heating on a steel belt, especially for weirs and dams
NL294585A (en) * 1962-06-27
US3293407A (en) * 1962-11-17 1966-12-20 Chisso Corp Apparatus for maintaining liquid being transported in a pipe line at an elevated temperature

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2178254A (en) * 1985-06-28 1987-02-04 Edward James Williams Electric liquid-heating apparatus
GB2178254B (en) * 1985-06-28 1989-07-19 Edward James Williams Electric heating apparatus

Also Published As

Publication number Publication date
FR2021838A1 (en) 1970-07-24
DE1954458B2 (en) 1971-07-29
US3629551A (en) 1971-12-21
DE1954458A1 (en) 1970-05-14

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee