EP0849550B1 - Procédé pour le refroidissement à basse température d'une charge et système de réfrigération à gaz liquifié pour la mise en oeuvre du procédé - Google Patents
Procédé pour le refroidissement à basse température d'une charge et système de réfrigération à gaz liquifié pour la mise en oeuvre du procédé Download PDFInfo
- Publication number
- EP0849550B1 EP0849550B1 EP97111987A EP97111987A EP0849550B1 EP 0849550 B1 EP0849550 B1 EP 0849550B1 EP 97111987 A EP97111987 A EP 97111987A EP 97111987 A EP97111987 A EP 97111987A EP 0849550 B1 EP0849550 B1 EP 0849550B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- liquefied gas
- heat exchanger
- pressure
- cooling
- cooling system
- 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
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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/001—Arrangement or mounting of control or safety devices for cryogenic fluid systems
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
- F25D3/10—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air
Definitions
- the invention relates to a liquid gas cooling system for cooling a Consumer at low temperature and a method of cooling a consumer Low temperature.
- a liquid gas cooling system of this type is known from DE 1601910 A1, in which Liquid nitrogen at Ambient pressure is filled into an insulated cooling container, around the second liquid gas circulating in the heat exchanger circuit, also to cool liquid nitrogen or another suitable gas.
- the heat exchanger circuit has one Subcooling heat exchanger in the liquid gas bath in the Cooling container is arranged, and on the other hand, a usual Heat exchanger, which is connected to the consumer in a heat-conducting manner, to cool it.
- a method for cooling a consumer to low temperature in which a cryogenic liquid gas is filled into a cooling container, a cryogenic gas is pumped around in a heat exchanger circuit and passed through a subcooling heat exchanger in the cooling container and then to the consumer, whereby the pressure in the heat exchanger circuit is set above the ambient pressure.
- DE-A-29 29 709 further discloses a liquid gas cooling system with a cooling container for taking a first cryogenic liquid gas, with a pipeline system for a second cryogenic liquid gas, which comprises a subcooling heat exchanger in the cooling container and which leads to a consumer, and wherein the pressure in the piping system is set above the ambient pressure.
- the invention solves this problem with a liquid gas cooling system with the features of claim 3 or by a method for Cooling a consumer to low temperature with the characteristics of Claim 1.
- the liquid gas in the cooling tank always strives for its Equilibrium state (boiling point) at which pressure and temperature have a fixed relationship.
- the internal pressure in the cooling container thus arises accordingly lower boiling temperature; for example when using Liquid nitrogen results from lowering the internal pressure to approximately 0.14 bar a boiling point of the liquid gas bath of about 64 K (liquid nitrogen changes to the solid phase at 63 K).
- a liquid gas cooling system is for continuous use expedient, which cools the liquid gas and constantly pumped in a circuit.
- Pressure control device provided to the pressure in the Set the heat exchanger circuit above ambient pressure.
- the liquid gas system according to the invention has a supercooling heat exchanger device, which is arranged in the liquid gas bath to the in Heat exchanger circuit, under positive pressure, circulating second liquid gas to cool below its boiling temperature hold. Furthermore, the heat exchanger circuit has an outside of the Cooling container lying heat exchanger device, which with the object to be cooled or consumer thermally connected is.
- the cables When cooling one or more HTSL cables as consumers can it should be expedient to put this directly into the second liquid gas to introduce leading pipe system, the cables then from the supercooled liquefied gas.
- the Vacuum pump preferably pressure controlled to maintain a constant Set the boiling pressure of the liquid gas in the cooling tank.
- a automatic level control For the level control of the liquid gas bath, a automatic level control provided.
- the heat exchanger circuit preferably contains one Circulation pump, the performance of which is designed to be a uninterrupted flow of the second liquid gas with a Speed generated at which the return temperature of the Liquid gas despite the heat input by the consumer under the Boiling temperature in the heat exchanger circuit.
- the invention is relatively simple, without large a low-temperature cooling system created with which, for example, when using Liquid nitrogen as liquid gas temperatures from below 77 K up to 64 K can be achieved by using the liquid gas bath temperature Pumping off the nitrogen gas phase using a vacuum pump is lowered.
- the liquid gas in the heat exchanger circuit which can also be liquid nitrogen, with a pumped static pressure, which is above ambient pressure to ensure that only pure gas-free liquid nitrogen is present in the circuit is pumped, which is always in the supercooled state.
- This supercooled liquid nitrogen can be used, for example, to cool High temperature superconductor cables are used to the to achieve and maintain superconductive state.
- FIG. 1 shows a schematic representation of a liquid gas cooling system according to the invention, which uses liquid nitrogen (LN 2 ) as the first and second liquid gas.
- LN 2 liquid nitrogen
- Known safety devices of the liquid gas cooling system required have not been shown for reasons of clarity.
- a cooling container 10 is shown, which is surrounded by a vacuum insulation jacket 12 and sealed gas-tight with a cover 14.
- the cooling container 10 contains a liquid gas bath 16.
- the following description relates to the use of liquid nitrogen (LN 2 ) as the liquid gas both for the liquid gas bath 16 in the cooling container 10 and for the heat exchanger circuit, which is generally designated 18.
- the cooling principle according to the invention can also be transferred to other cryogenic liquefied gases, for example argon (Ar), neon (Ne), hydrogen (H 2 ), helium (He) or oxygen (O 2 ).
- These liquid gases can be used in a suitable combination for the liquid gas bath 16 in the cooling container and as heat exchanger gas in the heat exchanger circuit 18.
- Extraction line 20 for the nitrogen gas phase 22 On the cover 14 of the cooling container 10 is one Extraction line 20 for the nitrogen gas phase 22 attached.
- a vacuum pump 24 with a vacuum pressure control device is removed 26 provided.
- a gas heater 28 In the shown Embodiment is in the extraction line 20 in front of the vacuum pump 24 a gas heater 28 is arranged.
- the heat exchanger circuit 18 comprises a piping system 30 which from a supercooling heat exchanger 32, which in the Liquid gas bath 16 is arranged in the cooling container 10, via a Liquefied gas pump 34 leads to a consumer 36, which via a another heat exchanger 38 is thermally conductive with the liquid gas in the Pipeline 30 is connected. If the consumer is a HTSL cable or the like, this can also directly into a pipe section of the Pipe system 30 introduced and washed around by the liquid gas are, so that then a heat exchanger 38 in the classic sense is not necessary is.
- the heat exchanger circuit 18 further comprises a circuit pressure control device 40 to one in the piping system 30 static pressure that is above the ambient pressure. Finally, the heat exchanger circuit 18 contains one Filling device 42 for filling and refilling liquid gas in the Piping system 30.
- a Liquid gas supply device 44 for the cooling container 10 with a level measuring device 46, which the filling level of the Liquid gas bath 16 is detected in the cooling container and a signal to controllable valve 48 can output to a feed line 50 for Open or close liquid nitrogen depending on the filling level.
- the embodiment of the LPG cooling system according to the invention works as follows.
- Cryogenic liquid nitrogen is supplied via line 50, usually at Ambient pressure and 77 K, filled in the cooling container 10 until a predetermined level is reached what the Level detection device 46 recognizes, and the valve 48th is closed.
- the vacuum pump 24 pumps over the line 20 and the gas heater 28 part of the nitrogen gas phase 22 from the Cooling container 10 from.
- the vacuum pump 24 is a vacuum pressure regulator 26 assigned to the vacuum pump 24 in Cooling container 10 generated negative pressure to a constant value, z. B. 0.1462 bar. It is important that the internal pressure in the Cooling tank is below atmospheric pressure.
- the function of the Gas heater 28 is about to prevent the vacuum pump set 24 is damaged by the cryogenic gas masses to be pumped out. When using, for example, a cryogenic fan as Vacuum pump, the gas heater 28 can also be omitted.
- the vacuum pump 24 By means of the vacuum pump 24 is thus by pumping the Nitrogen gas phase, the boiling pressure of the nitrogen is lowered, so that the nitrogen bath 16 below its ambient pressure Boiling temperature, ie below 77 K, cools down; at a pressure of about 0.14 bar results in a boiling bath temperature of about 64 K.
- About the Vacuum pressure regulator 26 of the vacuum pump 24 can have the boiling pressure and thus the boiling point of the liquid nitrogen to a desired one Value can be set.
- the automatic Level control 24 used in order to evaporation and Pumping down liquid nitrogen from a (not shown) to replenish the storage tank.
- the Subcooling heat exchanger 32 In the liquid gas bath 16 is the Subcooling heat exchanger 32, by means of which Circulation pump 34 is also pumped liquid nitrogen.
- the Pressure control device 40 generates a static pressure of more than 1 bar in the heat exchanger circuit 18 to ensure that the boiling point of that in the heat exchanger circuit Liquid nitrogen significantly above that of the nitrogen bath 16 in Cooling container 10 is located, so that only pure gas-free in the circuit Liquid nitrogen is pumped around, which is always in the supercooled Condition.
- the supercooling heat exchanger 32 is like this dimensioned that the nitrogen temperature in the pipeline 30 only is slightly above the nitrogen bath temperature, d. H. that the Liquid nitrogen in the heat exchanger circuit 18 when passing through the Subcooling heat exchanger 33 essentially the temperature of the Nitrogen bath 16 adopts.
- the delivery rate of the circulation pump 34 is designed so that the return temperature in the pipe 30 despite of the heat input by the consumer 36 under the Boiling temperature of the liquid nitrogen in the circuit 18 is.
- the consumer 36 can use a heat exchanger 38 be connected in a heat-conducting manner to the heat exchanger circuit 18; he can also directly into a section of the piping system 30 be introduced.
- the vacuum pump is during the operation of the invention LPG cooling system not only able to use the nitrogen bath 16 by pumping the gas phase 22 to a temperature below 77 K. cool, but it keeps the liquid gas bath 16 during the overall operation of the cooling system on a predetermined Temperature by the pressure in the cooling tank 10 on a specified value, under ambient pressure (1 bar). Pumps for this the vacuum pump 24 which due to the heat input by the Supercooling heat exchanger 32 evaporating amount of nitrogen; at the refilling of liquid nitrogen to maintain a constant Vacuum pump 24 pumps levels of the liquid gas bath 16 additionally generated gas masses and relaxes the internal pressure in the cooling container 10 to the predetermined value in order to Cool the liquid gas bath 16 back to the predetermined temperature.
- the entire LPG cooling system can be transported in one The rack can be integrated to make it easy to handle and universal to make it usable.
- the LPG circulation pump 34, the Liquid gas filling device 32 and the circuit pressure control device 40 can be integrated in the supercooling heat exchanger 32 in order to to make the overall system more compact.
- cooling system according to the invention in automatic operation it is advisable to run pressure monitoring, Level and temperature measuring points with alarm signal outputs and suitable displays at different points in the overall system provided.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Claims (11)
- Procédé de refroidissement d'un consommateur à basse température selon lequelon charge un premier gaz liquéfié à basse température dans un réservoir de refroidissement (10) et on diminue la pression interne dans le réservoir de refroidissement (10) en dessous de la pression ambiante pour diminuer la température d'ébullition du premier gaz liquéfié,on charge un second gaz liquéfié à basse température dans le circuit d'échange de chaleur (18) et on le fait passer dans un échangeur de température de sous refroidissement (32) dans le réservoir de refroidissement (10) et ensuite on le conduit vers le consommateur (36),on règle la pression dans le circuit d'échange de chaleur (18) au-dessus de la pression ambiante pour maintenir le gaz liquéfié dans le circuit d'échange de chaleur (18) toujours en phase liquide.
- Procédé selon la revendication 1,
caractérisé en ce qu'
on produit dans le circuit d'échange de chaleur (18) une circulation ininterrompue du second gaz liquéfié. - Système de refroidissement par gaz liquide pour la mise en oeuvre du procédé selon la revendication 1 ou 2, comprenantun réservoir de refroidissement (10) pour recevoir un premier gaz liquéfié à basse température,un circuit d'échange de chaleur (18) pour un second gaz liquéfié à basse température comprenant un échangeur de chaleur de sous refroidissement (32) dans le réservoir de refroidissement (10) et celui-ci est relié au consommateur (36) par une liaison de conduction thermique, ou on place le consommateur dans le réservoir,une pompe à vide (24) pour évacuer le gaz à l'état vapeur provenant du premier gaz liquéfié hors du réservoir de refroidissement (10), pour abaisser ou maintenir la pression intérieure du réservoir de refroidissement en dessous de la pression ambiante, etune installation de régulation de pression (40) pour le circuit d'échange de chaleur (18), pour régler la pression dans le circuit d'échange de chaleur (18) en dessous de la pression ambiante.
- Système de refroidissement à gaz liquéfié selon la revendication 3,
caractérisé en ce que
le premier et le second gaz liquéfiés sont choisis dans le groupe des gaz suivants : azote, argon, néon, hydrogène, hélium, oxygène. - Système de refroidissement à gaz liquéfié selon la revendication 3 ou 4,
caractérisé en ce que
le premier et le second gaz liquéfiés sont identiques. - Système de refroidissement à gaz liquéfié selon les revendications 3 à 5,
caractérisé par
une installation de régulation de pression de vide (26) pour la pompe à vide. - Système de refroidissement à gaz liquéfié selon l'une des revendications 3 à 6,
caractérisé en ce que
le circuit d'échange de chaleur (18) comporte pour le second gaz liquéfié un second circuit de conduite (30) dans lequel on place le consommateur. - Système de refroidissement à gaz liquéfié selon l'une des revendications 3 à 7,
caractérisé par
une installation de réchauffage (28) entre la pompe à vide (24) et le réservoir de refroidissement (10) pour réchauffer le gaz avant qu'il n'entre dans la pompe à vide. - Système de refroidissement à gaz liquéfié selon l'une des revendications 3 à 8,
caractérisé par
une installation de régulation de niveau (44) pour le premier gaz liquéfié à basse température dans le réservoir de refroidissement (10). - Système de refroidissement à gaz liquéfié selon l'une des revendications 3 à 9,
caractérisé en ce que
le circuit d'échange de chaleur (18) comporte une pompe de circulation (34) pour produire une circulation ininterrompue du second gaz liquéfié à une vitesse mesurée. - Système de refroidissement à gaz liquéfié selon l'une des revendications 3 à 10,
caractérisé en ce que
le premier et le second gaz liquéfiés sont de l'azote liquide et la pompe à vide (24) génère dans le réservoir de refroidissement (10) une dépression comprise entre environ 0,14 et en dessous de 1 bar pour refroidir l'azote liquéfié à une température d'environ 64 K jusqu'en dessous de 77 K.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19652764A DE19652764A1 (de) | 1996-12-18 | 1996-12-18 | Flüssiggas-Kühlungssystem zur Kühlung eines Verbrauchers auf Tieftemperatur |
DE19652764 | 1996-12-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0849550A1 EP0849550A1 (fr) | 1998-06-24 |
EP0849550B1 true EP0849550B1 (fr) | 2003-08-20 |
Family
ID=7815195
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97111987A Expired - Lifetime EP0849550B1 (fr) | 1996-12-18 | 1997-07-15 | Procédé pour le refroidissement à basse température d'une charge et système de réfrigération à gaz liquifié pour la mise en oeuvre du procédé |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0849550B1 (fr) |
DE (2) | DE19652764A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7453041B2 (en) | 2005-06-16 | 2008-11-18 | American Superconductor Corporation | Method and apparatus for cooling a superconducting cable |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19850911C2 (de) * | 1998-11-05 | 2000-12-07 | Messer Griesheim Gmbh | Flüssiggas-Kühlungssystem zur Kühlung eines Verbrauchers auf Tieftemperatur |
DE102017216015A1 (de) | 2017-09-12 | 2019-03-14 | Robert Bosch Gmbh | Handwerkzeugmaschine |
CN110332762A (zh) * | 2019-08-08 | 2019-10-15 | 兰州真空设备有限责任公司 | 气氮循环调温方法及*** |
CN114111082A (zh) * | 2021-11-02 | 2022-03-01 | 深圳供电局有限公司 | 一种基于gm制冷机的过冷液氮循环*** |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1601910A1 (de) * | 1967-01-11 | 1970-05-06 | Philips Nv | Kaeltetransporteinrichtung |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1501283B1 (de) * | 1965-01-22 | 1970-01-15 | Max Planck Gesellschaft | Vorrichtung zur Kuehlung von Objekten |
FR2034754A6 (fr) * | 1968-03-06 | 1970-12-18 | Mille Gaston | |
DE2423681C2 (de) * | 1974-05-15 | 1980-08-14 | Messer Griesheim Gmbh, 6000 Frankfurt | Verfahren zum Tiefkühlen von Objekten mittels eines tiefsiedenden |
DE2929709A1 (de) * | 1979-07-21 | 1981-02-12 | Messer Griesheim Gmbh | Vorrichtung zum unterkuehlen von unter druck stehenden, tiefsiedenden verfluessigten gasen |
US4541248A (en) * | 1983-12-15 | 1985-09-17 | Chicago Bridge & Iron Company | Constant temperature refrigeration system for a freeze heat exchanger |
DE3936940A1 (de) * | 1989-11-06 | 1991-05-08 | Westfalen Ag | Verfahren und vorrichtung zur erzeugung der gasfoermigen phase aus einem in seiner fluessigen phase gelagerten gasvorrat |
-
1996
- 1996-12-18 DE DE19652764A patent/DE19652764A1/de not_active Ceased
-
1997
- 1997-07-15 EP EP97111987A patent/EP0849550B1/fr not_active Expired - Lifetime
- 1997-07-15 DE DE59710611T patent/DE59710611D1/de not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1601910A1 (de) * | 1967-01-11 | 1970-05-06 | Philips Nv | Kaeltetransporteinrichtung |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7453041B2 (en) | 2005-06-16 | 2008-11-18 | American Superconductor Corporation | Method and apparatus for cooling a superconducting cable |
Also Published As
Publication number | Publication date |
---|---|
DE59710611D1 (de) | 2003-09-25 |
DE19652764A1 (de) | 1998-06-25 |
EP0849550A1 (fr) | 1998-06-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE4129522C2 (de) | Regeleinrichtung zur Regelung des Gasdruckes in einem Cryostaten | |
DE3633313A1 (de) | Supraleiter-spulenvorrichtung | |
EP1717510B1 (fr) | Système et procédé pour remplir un réservoir avec un gaz ou un mélange de gaz | |
DE19914778A1 (de) | Supraleitende Magnetvorrichtung | |
DE102011078608A1 (de) | Kryostatanordnung | |
DE3642683C2 (fr) | ||
EP2035739B1 (fr) | Procédé de fonctionnement d'un dispositif destiné au remplissage d'un réservoir de carburant stocké sous forme cryogénique | |
DE69937279T2 (de) | Kontrolliertes Entlüftungssystem für ultrahochreines Zufuhrsystem für verflüssigte Druckgase | |
EP0849550B1 (fr) | Procédé pour le refroidissement à basse température d'une charge et système de réfrigération à gaz liquifié pour la mise en oeuvre du procédé | |
EP0082409B1 (fr) | Procédé thermique pour faire transiter rapidement une bobine supraconductrice de l'état supraconducteur à l'état normal, et dispositif pour exécuter le procédé | |
DE10339048A1 (de) | Tieftemperaturkühlsystem für Supraleiter | |
DE10217092A1 (de) | Kühlung von Hochtemperatursupraleitern | |
EP0520937B1 (fr) | Procédé et dispositif de transport et de distribution d'hélium | |
DE2252638A1 (de) | Ausgleichs-speichervorrichtung fuer gasleitungen | |
DE19645488C1 (de) | System und Verfahren zum Entnehmen von kaltem Gas aus einem Kryotank | |
DE19850911C2 (de) | Flüssiggas-Kühlungssystem zur Kühlung eines Verbrauchers auf Tieftemperatur | |
DE19645492C1 (de) | System und Verfahren zum Aufrechterhalten oder Erhöhen des Drucks in einem Kryotank | |
EP3749903A1 (fr) | Procédé et dispositif de refroidissement d'un porteur de courant supraconducteur | |
DE1501283B1 (de) | Vorrichtung zur Kuehlung von Objekten | |
DE102017217347A1 (de) | Druckbehältersystem und Verfahren zum Zuführen von Brennstoff aus einem Druckbehältersystem | |
DE102005004665A1 (de) | Verfahren und Vorrichtung zum Befüllen von Druckbehältern mit nicht verflüssigten Gasen oder Gasgemischen | |
EP0355519A2 (fr) | Procédé et dispositif pour le refroidissement d'un conteneur rempli d'un liquide | |
EP3450819A1 (fr) | Procédé de remplissage d'un réservoir d'agent de refroidissement mobile d'un agent de refroidissement cryogénique | |
DE102018006912A1 (de) | Vorrichtung zum Kühlen eines supraleitenden Elements | |
DE19717621A1 (de) | Unterkühlen von flüssigen Gasen |
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 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB IT |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;RO;SI |
|
17P | Request for examination filed |
Effective date: 19981228 |
|
AKX | Designation fees paid |
Free format text: DE FR GB IT |
|
RBV | Designated contracting states (corrected) |
Designated state(s): DE FR GB IT |
|
17Q | First examination report despatched |
Effective date: 20010423 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: MESSER GRIESHEIM GMBH |
|
RTI1 | Title (correction) |
Free format text: PROCESS FOR LOW TEMPERATURE COOLING OF A LOAD AND LIQUEFIED GAS REFRIGERATION SYSTEM FOR PERFORMING THE PROCESS |
|
RTI1 | Title (correction) |
Free format text: PROCESS FOR LOW TEMPERATURE COOLING OF A LOAD AND LIQUEFIED GAS REFRIGERATION SYSTEM FOR PERFORMING THE PROCESS |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Designated state(s): DE FR GB IT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20030820 Ref country code: GB Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20030820 Ref country code: FR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20030820 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REF | Corresponds to: |
Ref document number: 59710611 Country of ref document: DE Date of ref document: 20030925 Kind code of ref document: P |
|
GBV | Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed] |
Effective date: 20030820 |
|
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 |
Effective date: 20040524 |
|
EN | Fr: translation not filed | ||
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R082 Ref document number: 59710611 Country of ref document: DE Representative=s name: KNH PATENTANWAELTE KAHLHOEFER NEUMANN ROESSLER, DE Ref country code: DE Ref legal event code: R081 Ref document number: 59710611 Country of ref document: DE Owner name: CRYOTHERM GMBH & CO. KG, DE Free format text: FORMER OWNER: AIR LIQUIDE DEUTSCHLAND GMBH, 47805 KREFELD, DE |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20160722 Year of fee payment: 20 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R071 Ref document number: 59710611 Country of ref document: DE |