EP0130908A1 - Wärmeübertragungsverfahren mittels einer monovarianten Dreiphasen-Reaktion - Google Patents

Wärmeübertragungsverfahren mittels einer monovarianten Dreiphasen-Reaktion Download PDF

Info

Publication number
EP0130908A1
EP0130908A1 EP84401360A EP84401360A EP0130908A1 EP 0130908 A1 EP0130908 A1 EP 0130908A1 EP 84401360 A EP84401360 A EP 84401360A EP 84401360 A EP84401360 A EP 84401360A EP 0130908 A1 EP0130908 A1 EP 0130908A1
Authority
EP
European Patent Office
Prior art keywords
gas
heat pump
pump according
reaction
calories
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.)
Granted
Application number
EP84401360A
Other languages
English (en)
French (fr)
Other versions
EP0130908B1 (de
Inventor
Didier Payre
Georges Crozat
Bernard Spinner
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.)
Societe National Elf Aquitaine
Original Assignee
Societe National Elf Aquitaine
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 Societe National Elf Aquitaine filed Critical Societe National Elf Aquitaine
Priority to AT84401360T priority Critical patent/ATE29578T1/de
Publication of EP0130908A1 publication Critical patent/EP0130908A1/de
Application granted granted Critical
Publication of EP0130908B1 publication Critical patent/EP0130908B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • 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
    • F25B30/00—Heat pumps
    • F25B30/04—Heat pumps of the sorption type
    • 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
    • F25B17/00—Sorption machines, plants or systems, operating intermittently, e.g. absorption or adsorption type

Definitions

  • the present invention relates to a thermochemical heat pump making it possible to transfer calories between a first source of calories and a second source of calories.
  • This heat pump operates on an intermittent cycle of heat storage and destocking.
  • thermochemical heat pump Several types have already been proposed which have either continuous or intermittent operation and which can operate to supply calories-heating- or to draw-cooling.
  • the reaction medium comprises a liquid phase, this is what is for example carried out in liquid gas absorption systems. .
  • these systems have the disadvantage of being divariant, that is to say that the heat exchanges are not done at constant temperature which raises many problems when one wants to provide for effective management of L ' energy.
  • the invention provides, on the contrary, a monovariant system, that is to say a system for which the relation between the logarithm of the pressure and 1 / T is unique and quasi-linear.
  • thermochemical heat pumps with a three-phase monovariant system for LequeL
  • the absorption of gas by a saturated solution corresponds to a single equilibrium, that is to say say that there is only one reaction whereas MAR has considered that the heat exchange takes place during two distinct reactions each concerning a different solid compound.
  • the invention provides a thermochemical heat pump for transferring calories from a first heat source to a second heat source by using a reaction medium. It is characterized in that the exchange of calories between one of the two sources and said reaction medium takes place during a reaction between a gas and a liquid phase constituted by a solution saturated with solid or two immiscible liquids, said reaction being monovariant.
  • the exchange of calories between the second source and the reaction medium takes place during a gas-liquid phase change reaction of said gas, a monovariant reaction, or during an absorption reaction of said gas by a solid,
  • the gas may consist of water vapor or ammonia, or alternatively chosen from methanol, ethanol, butanol, Methylamine, dimethylamine, trimethylamine, ethylamine, diethylamine, Fluoroalkanes, chlorinated fluoroalkanes, difluoromethylsilane, Chlorodifluorosilane, Disiloxane, Propane, butane, Acetone and acethaldehyde, fluoroalkanes being themselves chosen from CC1 3 F, CC1 2 F 2 , CHCl 2 F, CHC1F 2 , Cl 3 C 2 F 3 , Cl 2 C 2 F 4 , C 2 HC1F 4 , C 2 H 2 C1F 3 , CH 2 CIF and C 2 H 2 F 4 .
  • the heat pump according to the invention comprises a saturated solution, in Liquefied gas, of a solid chosen from CaCl 2 , KOH, LiCl, LiBr, ZnC1 2 , ZnBr 2 and Gas, in these cases, is H 2 O.
  • the heat pump comprises two reactors, each placed in a heat exchange situation with one of the heat sources and they are connected together by a gas transfer pipe.
  • This tubing can be fitted with a compressor.
  • the reactor in which the monovariant reaction of the gas with the saturated solution takes place is provided with a stirring system.
  • the heat pump comprises a reactor 1 and a reactor 2, linked together by line 3.
  • Each reactor is provided with a heat exchanger 4 to 5 allowing the exchange of calories between the reaction medium and the external sources of calories. .
  • Reactor 1 contains the liquid in equilibrium with its vapor phase
  • Reactor 2 contains the saturated solid solution.
  • the gas from reactor 1 condenses at the saturated solution and releases its latent heat of condensation ⁇ H while diluting the solution.
  • the differential heat of dilution of the saturated solution is + ⁇ H D , it is an exothermic reaction.
  • excess solid dissolves to maintain the concentration at saturation, with a heat ⁇ H S of dissolution of the salt in the saturated solution.
  • the gas evaporates from the solution contained in reactor 1 to go to reactor 2 which then plays the role of condenser. The solution is concentrated and the solid must crystallize. The enthalpies involved are the same as before, in opposite sign.
  • FIG. 4 shows a heating installation produced according to the present invention and in LaqueLLe
  • the heating period corresponds only to the destocking phase. It is understood that, as mentioned above, the installation could also be used for heating during the storage period.
  • Part A of Figure 4 represents the storage phase while Part B represents the destocking phase.
  • the heat pump is symbolized by its two reactors (1) and (2) and by the gas pipe (3).
  • the reactor (1) is connected to a hot source constituted, in the installation shown, by a solar collector (12).
  • the calories given up in the reactor (2) during the condensation of the gas are rejected into the atmosphere but they could as well be used for heating or even be stored.
  • the reactor (2) is supplied with calories by a cold source, symbolized by the arrow (11). The calories are recovered in reactor 1 and used for heating.
  • the three-phase system used was Saturated solution of Lithium chloride, water vapor and Lithium chloride monohydrate.
  • the range of existence of the hydrate in solid form with the saturated solution is between 19 and 95 ° C.
  • the mass storage capacity, measured between a storage operation at 90 ° C and a destocking operation at 45 ° C, was 146 Wh / kg.
  • ⁇ T temperature rise of approximately 41 ° C.
  • a chemical heat pump according to the invention has been produced which involves a reaction of the gas with a saturated solution and a reaction of absorption of said gas by a solid.
  • phase rule shows that the system is mono-variant.
  • FIG. 3 shows the LiCl / LiCl H 2 0 absorption curve, referenced by the reference 9. This curve is located to the right of the curve corresponding to the saturated solution.
  • the assembly works as in the previous example, with a storage phase and a destocking phase, and gives identical results.
  • a compressor can be provided on the tubing (3) so as to improve the reaction kinetics or else to place a stirring device inside the reactor (1).
EP84401360A 1983-07-01 1984-06-26 Wärmeübertragungsverfahren mittels einer monovarianten Dreiphasen-Reaktion Expired EP0130908B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84401360T ATE29578T1 (de) 1983-07-01 1984-06-26 Waermeuebertragungsverfahren mittels einer monovarianten dreiphasen-reaktion.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8310955 1983-07-01
FR8310955A FR2548340B1 (fr) 1983-07-01 1983-07-01 Pompe a chaleur triphasique

Publications (2)

Publication Number Publication Date
EP0130908A1 true EP0130908A1 (de) 1985-01-09
EP0130908B1 EP0130908B1 (de) 1987-09-09

Family

ID=9290394

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84401360A Expired EP0130908B1 (de) 1983-07-01 1984-06-26 Wärmeübertragungsverfahren mittels einer monovarianten Dreiphasen-Reaktion

Country Status (7)

Country Link
US (2) US4682476A (de)
EP (1) EP0130908B1 (de)
JP (1) JPS6026261A (de)
AT (1) ATE29578T1 (de)
CA (1) CA1236312A (de)
DE (1) DE3466059D1 (de)
FR (1) FR2548340B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2582790A1 (fr) * 1985-06-04 1986-12-05 Elf Aquitaine Procede et dispositif thermochimiques de stockage et destockage de chaleur
WO1989009374A1 (fr) * 1988-03-30 1989-10-05 Societe Nationale Elf Aquitaine Caloduc chimique, procede de regeneration d'un tel caloduc et utilisation de ce caloduc
WO1996009500A1 (en) * 1994-09-22 1996-03-28 Thermal Energy Accumulator Products Pty. Ltd. A temperature control system for fluids

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2548340B1 (fr) * 1983-07-01 1986-03-21 Elf Aquitaine Pompe a chaleur triphasique
DE3875779T2 (de) * 1987-04-14 1993-05-27 Uwe Rockenfeller Chemisches energie-speicher-system.
US4949549A (en) * 1987-07-07 1990-08-21 International Thermal Packaging, Inc. Cooling device with improved waste-heat handling capability
US4759191A (en) * 1987-07-07 1988-07-26 Liquid Co2 Engineering, Inc. Miniaturized cooling device and method of use
IN171470B (de) * 1987-07-07 1992-10-24 Int Thermal Packaging Inc
US4974419A (en) * 1988-03-17 1990-12-04 Liquid Co2 Engineering Inc. Apparatus and method for simultaneously heating and cooling separate zones
US4993239A (en) * 1987-07-07 1991-02-19 International Thermal Packaging, Inc. Cooling device with improved waste-heat handling capability
US4901535A (en) * 1987-07-07 1990-02-20 Sabin Cullen M Temperature changing device improved evaporation characteristics
US4744224A (en) * 1987-07-27 1988-05-17 Erickson Donald C Intermittent solar ammonia absorption cycle refrigerator
DE3837880A1 (de) * 1988-11-08 1990-05-10 Zeolith Tech Kuehlbehaelter fuer einen sorptionsapparat
US5048301A (en) * 1989-01-05 1991-09-17 International Thermal Packaging Vacuum insulated sorbent driven refrigeration device
US5197302A (en) * 1989-01-05 1993-03-30 International Thermal Packaging, Inc. Vacuum insulated sorbent-driven refrigeration device
US5018368A (en) * 1989-10-12 1991-05-28 International Thermal Packaging, Inc. Multi-staged desiccant refrigeration device
US5490398A (en) * 1993-03-15 1996-02-13 Airex Research And Development, Inc. High efficiency absorption cooling and heating apparatus and method
FR2723438B1 (fr) 1994-08-02 1996-09-20 Lorraine Carbone Reacteur de pompe a chaleur chimique a puissance amelioree
FR2748093B1 (fr) * 1996-04-25 1998-06-12 Elf Aquitaine Dispositif thermochimique pour produire du froid et/ou de la chaleur
SE515688C2 (sv) * 1998-12-18 2001-09-24 Suncool Ab Kemisk värmepump samt förfarande för kylning och/eller uppvärmning
AU2003289308A1 (en) * 2002-12-13 2004-07-09 The Tokyo Electric Power Company, Incorporated Heat pump using gas hydrate, and heat utilizing apparatus
SE527721C2 (sv) * 2003-12-08 2006-05-23 Climatewell Ab Kemisk värmepump arbetande enligt hybridpincipen
FR2878940A1 (fr) * 2004-12-06 2006-06-09 Guy Karsenti Dispositif de climatisation du genre pompe a chaleur par absorption, en particulier pour enceintes de faible volume, et enceinte le comportant
CN101737996B (zh) * 2008-11-17 2012-02-01 苏庆泉 热泵循环系统以及冷热联供方法
EP2759679A1 (de) * 2013-01-23 2014-07-30 Siemens Aktiengesellschaft Thermische Speichereinrichtung zur Nutzung von Niedertemperaturwärme
US20210325092A1 (en) * 2018-02-06 2021-10-21 John Saavedra Heat Transfer Device
CN113025281A (zh) * 2021-03-18 2021-06-25 天津大学 一种含有机硅的制冷剂

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE380828A (de) *
US2138686A (en) * 1933-02-28 1938-11-29 Altenkirch Edmund Intermittent absorption refrigerating apparatus
FR2172754A1 (en) * 1972-02-21 1973-10-05 Greiner Leonard Heating and cooling apparatus with absorption chemical - and fluid to be absorbed
US3828566A (en) * 1973-02-05 1974-08-13 C Wetzel Dry adsorption refrigeration system
FR2307236A1 (fr) * 1975-04-10 1976-11-05 Allied Chem Procede et dispositifs pour le chauffage par absorption, et compositions utilisees dans ce but, comprenant des solutes fluorohydrocarbones dissous dans des absorbants a noyau de furane
FR2393246A1 (fr) * 1977-05-31 1978-12-29 Brunberg Ernst Ake Procede et appareil pour refroidir un espace
DE2923480A1 (de) * 1979-06-09 1980-12-18 Erno Raumfahrttechnik Gmbh Verfahren zur speicherung von insbesondere niedertemperatur-waerme
EP0035871A1 (de) * 1980-03-07 1981-09-16 Thermal Energy Storage, Inc Geschlossenes System für Verdampfungswärmeübertragung
US4319626A (en) * 1976-07-06 1982-03-16 Martin Marietta Corp. Chemical storage of energy
US4332139A (en) * 1978-12-27 1982-06-01 The Director-General Of The Agency Of Industrial Science And Technology Method for storage and recovery of thermal energy
US4386501A (en) * 1981-07-29 1983-06-07 Martin Marietta Corporation Heat pump using liquid ammoniated ammonium chloride, and thermal storage system
US4411384A (en) * 1980-08-29 1983-10-25 The United States Of America As Represented By The Secretary Of The Navy Heat driven heat pump using paired ammoniated salts

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2144441A (en) * 1932-10-27 1939-01-17 Schlumbohm Peter Method of conditioning an absorption refrigerating system
US2182453A (en) * 1936-01-18 1939-12-05 William H Sellew Heat transfer process and apparatus
US4532778A (en) * 1979-11-16 1985-08-06 Rocket Research Company Chemical heat pump and chemical energy storage system
FR2548340B1 (fr) * 1983-07-01 1986-03-21 Elf Aquitaine Pompe a chaleur triphasique

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE380828A (de) *
US2138686A (en) * 1933-02-28 1938-11-29 Altenkirch Edmund Intermittent absorption refrigerating apparatus
FR2172754A1 (en) * 1972-02-21 1973-10-05 Greiner Leonard Heating and cooling apparatus with absorption chemical - and fluid to be absorbed
US3828566A (en) * 1973-02-05 1974-08-13 C Wetzel Dry adsorption refrigeration system
FR2307236A1 (fr) * 1975-04-10 1976-11-05 Allied Chem Procede et dispositifs pour le chauffage par absorption, et compositions utilisees dans ce but, comprenant des solutes fluorohydrocarbones dissous dans des absorbants a noyau de furane
US4319626A (en) * 1976-07-06 1982-03-16 Martin Marietta Corp. Chemical storage of energy
FR2393246A1 (fr) * 1977-05-31 1978-12-29 Brunberg Ernst Ake Procede et appareil pour refroidir un espace
US4332139A (en) * 1978-12-27 1982-06-01 The Director-General Of The Agency Of Industrial Science And Technology Method for storage and recovery of thermal energy
DE2923480A1 (de) * 1979-06-09 1980-12-18 Erno Raumfahrttechnik Gmbh Verfahren zur speicherung von insbesondere niedertemperatur-waerme
EP0035871A1 (de) * 1980-03-07 1981-09-16 Thermal Energy Storage, Inc Geschlossenes System für Verdampfungswärmeübertragung
US4411384A (en) * 1980-08-29 1983-10-25 The United States Of America As Represented By The Secretary Of The Navy Heat driven heat pump using paired ammoniated salts
US4386501A (en) * 1981-07-29 1983-06-07 Martin Marietta Corporation Heat pump using liquid ammoniated ammonium chloride, and thermal storage system

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
SOLAR ENERGY, vol. 19, no. 1, 1977, Pergamon PressOXFORD (GB) D.R. BISWAS: "Thermal energy storage using sodium sulfate decahydrate and water", pages 99-100. *
SOLAR ENERGY, vol. 24, no. 6, 1980 OXFORD (GB) C. WYMAN et al.: "A review of collector and energy storage technology", pages 528-540. *
SOLAR ENERGY, vol. 27, no. 6, 1981, Pergamon Press Ltd. OXFORD (GB) J. FLECHON et al.: "Solar refrigeration: study of dry absorption", pages 583-586. *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2582790A1 (fr) * 1985-06-04 1986-12-05 Elf Aquitaine Procede et dispositif thermochimiques de stockage et destockage de chaleur
EP0206875A1 (de) * 1985-06-04 1986-12-30 Societe Nationale Elf Aquitaine Thermochemisches Verfahren und Einrichtung zum Speichern und Freigeben von Wärme
WO1989009374A1 (fr) * 1988-03-30 1989-10-05 Societe Nationale Elf Aquitaine Caloduc chimique, procede de regeneration d'un tel caloduc et utilisation de ce caloduc
FR2629575A1 (fr) * 1988-03-30 1989-10-06 Elf Aquitaine Caloduc chimique, procede de regeneration d'un tel caloduc et utilisation de ce caloduc
EP0336816A1 (de) * 1988-03-30 1989-10-11 Societe Nationale Elf Aquitaine Chemisches Wärmerohr, Verfahren zu dessen Regenerierung und dessen Verwendung
WO1996009500A1 (en) * 1994-09-22 1996-03-28 Thermal Energy Accumulator Products Pty. Ltd. A temperature control system for fluids

Also Published As

Publication number Publication date
ATE29578T1 (de) 1987-09-15
DE3466059D1 (en) 1987-10-15
JPS6026261A (ja) 1985-02-09
FR2548340A1 (fr) 1985-01-04
CA1236312A (fr) 1988-05-10
FR2548340B1 (fr) 1986-03-21
US4873842A (en) 1989-10-17
US4682476A (en) 1987-07-28
EP0130908B1 (de) 1987-09-09

Similar Documents

Publication Publication Date Title
EP0130908A1 (de) Wärmeübertragungsverfahren mittels einer monovarianten Dreiphasen-Reaktion
Ozcan et al. Energy and exergy analyses of a solar driven Mg–Cl hybrid thermochemical cycle for co-production of power and hydrogen
de Jong et al. Thermochemical heat storage–system design issues
EP0382586A1 (de) Vorrichtung zum Erzeugen von Kälte und/oder Wärme mittels einer Reaktion zwischen einem festen Körper und einem Gas
CA1273199A (fr) Procede et dispositif thermo-chimiques de stockage et destockage de chaleur
CA2028327C (fr) Dispositifs et procede pour produire du froid et/ou de la chaleur par reaction solide-gaz geres par caloducs gravitationnels
EP0148756A2 (de) System zum Aufwertem thermischer Energie mit niedrigem Niveau unter Ausnutzung der Verdampfung, und Mischung zweier strömender Medien mit gleichem Dampfdruck bei unterschiedlichen Temperaturen
EP1809955B1 (de) Erzeugung von Tiefkühlung in einer thermochemischen Vorrichtung.
Zhang et al. Experimental investigation on a strontium chloride/ammonia sorption heat storage system
EP3108196A1 (de) Wärmeenergiespeicher und abgabevorrichtung
EP3721152B1 (de) Thermochemische wärmepumpe und verfahren zur umverteilung von variabler kalorischer energie
FR2565676A1 (fr) Procede de recuperation de la chaleur degagee par une reaction.
US4169499A (en) Solar energy heat utilization
JP6851786B2 (ja) 化学蓄熱システム
EP3543312B1 (de) Wärmeübertragungsmedium schmelzzusammensetzung, wärmeübertragungssystem damit und stromerzeugungsvorrichtung mit dem wärmeübertragungssystems
WO2003029732A1 (fr) Installation et procede pour la production de froid ou de chaleur par un systeme a sorption
EP1523643B1 (de) Verfahren zur kälteerzeugung und anlage zur durchführung des verfahrens
EP1809956B1 (de) Erzeugung von tiefkühlung in einer thermochemischen vorrichtung
JPS5864486A (ja) 熱交換装置
EP2742275B1 (de) Verfahren zum füllen eines gastanks
WO2024052614A1 (fr) Dispositif de stockage d'energie thermique a base de l'hydroxyde de lithium
JPH03263592A (ja) ヒートパイプ用作動液
FR2852676A1 (fr) Procede et dispositif pour la production de froid rapide et de forte puissance
EP0336816A1 (de) Chemisches Wärmerohr, Verfahren zu dessen Regenerierung und dessen Verwendung
WO2004039488A2 (fr) Dispositif comportant un reacteur chimique et un transformateur thermochimique et procede d’utilisation du dit procede

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19840630

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 29578

Country of ref document: AT

Date of ref document: 19870915

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3466059

Country of ref document: DE

Date of ref document: 19871015

ITF It: translation for a ep patent filed

Owner name: TOP - PATENTS - ITALO INCOLLINGO

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19880630

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19890116

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19890616

Year of fee payment: 6

Ref country code: CH

Payment date: 19890616

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19890622

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19890629

Year of fee payment: 6

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19890630

Year of fee payment: 6

Ref country code: LU

Payment date: 19890630

Year of fee payment: 6

Ref country code: GB

Payment date: 19890630

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19890718

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19900626

Ref country code: AT

Effective date: 19900626

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19900627

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19900630

Ref country code: CH

Effective date: 19900630

Ref country code: BE

Effective date: 19900630

BERE Be: lapsed

Owner name: SOC. NATIONALE ELF AQUITAINE

Effective date: 19900630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19910101

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19910228

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19910301

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 84401360.7

Effective date: 19910206