EP1271075A1 - Verfahren und Vorrichtung zur Kältebereitstellung - Google Patents
Verfahren und Vorrichtung zur Kältebereitstellung Download PDFInfo
- Publication number
- EP1271075A1 EP1271075A1 EP02012634A EP02012634A EP1271075A1 EP 1271075 A1 EP1271075 A1 EP 1271075A1 EP 02012634 A EP02012634 A EP 02012634A EP 02012634 A EP02012634 A EP 02012634A EP 1271075 A1 EP1271075 A1 EP 1271075A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nitrogen
- cold
- compressor
- evaporated
- heat exchanger
- 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
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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
- 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 method for providing cold by evaporating liquid nitrogen at subatmospheric pressure and then warming up and compressing the vaporized nitrogen.
- the invention further relates to a device for providing cold by evaporation of liquid nitrogen at subatmospheric pressure and then Warming up and compressing the vaporized nitrogen, with a relaxation or Dosing device that relaxes or doses the liquid nitrogen serves, a container into which the relaxed nitrogen is fed and out of the cold at least one (cold) consumer is discharged, a heat exchanger that the Heating of the evaporated nitrogen is used, and a compressor, which the Compression of the vaporized nitrogen is used.
- Generic methods and devices for the provision of cold are for example for open and closed cooling processes, which are the cooling of High temperature superconducting components are used.
- the one to be cooled Component is either integrated directly into the aforementioned container or supplied with cold from this container via a secondary circuit.
- Another option is to add nitrogen at subatmospheric pressure evaporate, warm to about ambient temperature and then on compress atmospheric or superatmospheric pressure.
- FIG. 1 schematically shows such a process, which is part of the prior art.
- an expansion or Dosing device which is preferably an expansion valve 2, relaxed and fed to a container 3.
- a gas phase a forms in this as well as a liquid phase b, because the delivery of cooling power to the Container supplied liquid nitrogen is evaporated.
- Vaporized via line 4 Nitrogen drawn out of the container 3 and after heating up Ambient temperature in the heat exchanger 5 by means of the compressor 6 atmospheric or superatmospheric pressure. Warming up the evaporated nitrogen in the heat exchanger 5 is preferably counter Ambient air, water, or the like or by means of electrical heating.
- the object of the present invention is a generic method and a Specify generic device for cold supply, the or energetic and apparatus advantages over the previously described process for Provides refrigeration by evaporating liquid nitrogen.
- this object is achieved in that the vaporized nitrogen is first compressed and then warmed up if necessary.
- the compressor is, according to the invention, the heat exchanger upstream.
- compressors 6 ' One or more so-called cold compressors are used as compressors 6 '. According to the invention, the compression is now carried out directly at the Boiling point of nitrogen instead of at ambient temperature.
- radial compressors are used as cold compressors Applications specially designed for use at very low temperatures.
- FIG. 3 shows a procedure that differs from that shown in FIG. 2 explained distinguished by the fact that an additional heat exchanger 7, the cold compressor 6 'is connected upstream, is provided.
- This heat exchanger 7 is used the supercooling of the liquid nitrogen in line 1 by the, from which Container 3 drawn off, evaporated nitrogen, which is thereby slightly warmed.
- the method according to the invention and the device according to the invention lead to a reduction in the drive power of the compressor 6, since the compression at lower Temperature.
- the method according to the invention and the device according to the invention for Providing cold thus simplifies the process, one Cost reduction, an increase in process efficiency and one Improve operational security and availability.
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- 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)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Separation By Low-Temperature Treatments (AREA)
- Containers, Films, And Cooling For Superconductive Devices (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Description
Claims (6)
- Verfahren zur Kältebereitstellung durch Verdampfen von flüssigem Stickstoff bei subatmosphärischen Druck und anschließendem Anwärmen und Verdichten des verdampften Stickstoffes, dadurch gekennzeichnet, dass der verdampfte Stickstoff zunächst verdichtet und anschließend ggf. angewärmt wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der verdampfte Stickstoff vor seiner Verdichtung zur Unterkühlung des flüssigen Stickstoffes verwendet wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Verdichtung des verdampften Stickstoffes mittels eines oder mehrerer sog. kalter Verdichter erfolgt.
- Vorrichtung zur Kältebereitstellung durch Verdampfen von flüssigem Stickstoff bei subatmosphärischen Druck und anschließendem Anwärmen und Verdichten des verdampften Stickstoffes, mit einem Entspannungs- oder Dosierorgan (2), das der Entspannung oder Dosierung des flüssigen Stickstoffes dient, einem Behälter (3), in den der entspannte Stickstoff geführt und aus dem Kälte an wenigstens einen (Kälte)Verbraucher abgeführt wird, einem Wärmetauscher (5, 5'), der der Unterkühlung des flüssigen und der Anwärmung des verdampften Stickstoffes dient, und einem Verdichter (6), der der Verdichtung des verdampften Stickstoffes dient, dadurch gekennzeichnet, dass der Verdichter (6') dem Wärmetauscher (5') vorgeschaltet ist, der Wärmetauscher (5') nicht vorgesehen ist oder mittels einer By-pass-Leitung umgehbar ist.
- Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass dem Verdichter (6') ein Wärmetauscher (7), der dem Wärmetausch mit dem flüssigen Stickstoff dient, vorgeschaltet ist.
- Vorrichtung nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass der Verdichter (6') als sog. kalter Verdichter ausgebildet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10129780 | 2001-06-20 | ||
DE10129780A DE10129780A1 (de) | 2001-06-20 | 2001-06-20 | Verfahren und Vorrichtung zur Kältebereitstellung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1271075A1 true EP1271075A1 (de) | 2003-01-02 |
EP1271075B1 EP1271075B1 (de) | 2008-03-26 |
Family
ID=7688861
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02012634A Expired - Lifetime EP1271075B1 (de) | 2001-06-20 | 2002-06-06 | Verfahren und Vorrichtung zur Kältebereitstellung |
Country Status (5)
Country | Link |
---|---|
US (1) | US6619047B2 (de) |
EP (1) | EP1271075B1 (de) |
JP (1) | JP2003097859A (de) |
AT (1) | ATE390608T1 (de) |
DE (2) | DE10129780A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008009681A1 (en) * | 2006-07-21 | 2008-01-24 | Mdi - Motor Development International S.A. | Ambient temperature thermal energy and constant pressure cryogenic engine |
EP2515057A1 (de) * | 2011-04-20 | 2012-10-24 | Messer Group GmbH | Verfahren und Vorrichtung zur Regelung der Temperatur eines fluiden Mediums |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7621148B1 (en) | 2007-08-07 | 2009-11-24 | Dain John F | Ultra-low temperature bio-sample storage system |
US7823394B2 (en) * | 2007-11-02 | 2010-11-02 | Reflect Scientific, Inc. | Thermal insulation technique for ultra low temperature cryogenic processor |
DE102011010121B4 (de) * | 2011-02-02 | 2016-09-01 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Begehbare Kühlanlage, insbesondere zur Kryokonservierung biologischer Proben, und Verfahren zu deren Betrieb |
CN107830651B (zh) * | 2017-10-20 | 2020-04-10 | 中国科学院理化技术研究所 | 一种低温制冷系统 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19619152A1 (de) * | 1996-05-11 | 1997-11-27 | Bernd Dipl Ing Mingers | Gefriereinrichtung |
DE19717621A1 (de) * | 1997-04-25 | 1998-06-25 | Linde Ag | Unterkühlen von flüssigen Gasen |
DE19850911A1 (de) * | 1998-11-05 | 2000-05-11 | Messer Griesheim Gmbh | Flüssiggas-Kühlungssystem zur Kühlung eines Verbrauchers auf Tieftemperatur |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB808535A (en) * | 1956-09-19 | 1959-02-04 | British Oxygen Co Ltd | Evaporation of liquefied gases with simultaneous production of mechanical energy |
NO133287C (de) * | 1972-12-18 | 1976-04-07 | Linde Ag | |
US3933003A (en) * | 1974-04-25 | 1976-01-20 | General Dynamics Corporation | Cryostat control |
US4249387A (en) * | 1979-06-27 | 1981-02-10 | Phillips Petroleum Company | Refrigeration of liquefied petroleum gas storage with retention of light ends |
US4548053A (en) * | 1984-06-05 | 1985-10-22 | The United States Of America As Represented By The United States Department Of Energy | Combined cold compressor/ejector helium refrigerator |
FR2588947B1 (fr) * | 1985-10-21 | 1989-02-10 | Distrigaz Sa | Procede pour maintenir la composition du produit stocke constante dans un stockage de gaz liquefie a basse temperature |
US4727723A (en) * | 1987-06-24 | 1988-03-01 | The M. W. Kellogg Company | Method for sub-cooling a normally gaseous hydrocarbon mixture |
FR2619203B1 (fr) * | 1987-08-04 | 1989-11-17 | Anhydride Carbonique Ind | Procede et installation de refroidissement cryogenique utilisant du dioxyde de carbone liquide en tant qu'agent frigorigene |
US5176002A (en) * | 1991-04-10 | 1993-01-05 | Process Systems International, Inc. | Method of controlling vapor loss from containers of volatile chemicals |
FR2760074B1 (fr) * | 1997-02-24 | 1999-04-23 | Air Liquide | Procede de compression d'un gaz a basse temperature et a basse pression, ligne de compression et installation de refrigeration correspondantes |
DE19755484A1 (de) * | 1997-12-13 | 1999-06-17 | Univ Dresden Tech | Verfahren zur Kälteerzeugung im Temperaturbereich von 50,1 bis 63 Kelvin und Vorrichtung zur Durchführung dieses Verfahrens |
-
2001
- 2001-06-20 DE DE10129780A patent/DE10129780A1/de not_active Withdrawn
-
2002
- 2002-06-06 DE DE50211946T patent/DE50211946D1/de not_active Expired - Lifetime
- 2002-06-06 AT AT02012634T patent/ATE390608T1/de not_active IP Right Cessation
- 2002-06-06 EP EP02012634A patent/EP1271075B1/de not_active Expired - Lifetime
- 2002-06-19 JP JP2002178358A patent/JP2003097859A/ja active Pending
- 2002-06-20 US US10/175,154 patent/US6619047B2/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19619152A1 (de) * | 1996-05-11 | 1997-11-27 | Bernd Dipl Ing Mingers | Gefriereinrichtung |
DE19717621A1 (de) * | 1997-04-25 | 1998-06-25 | Linde Ag | Unterkühlen von flüssigen Gasen |
DE19850911A1 (de) * | 1998-11-05 | 2000-05-11 | Messer Griesheim Gmbh | Flüssiggas-Kühlungssystem zur Kühlung eines Verbrauchers auf Tieftemperatur |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008009681A1 (en) * | 2006-07-21 | 2008-01-24 | Mdi - Motor Development International S.A. | Ambient temperature thermal energy and constant pressure cryogenic engine |
EA014489B1 (ru) * | 2006-07-21 | 2010-12-30 | Мди - Мотор Девелопман Энтернасьональ С.А. | Криогенный двигатель, работающий на тепловой энергии, обусловленной температурой окружающей среды, и при постоянном давлении |
US8276384B2 (en) | 2006-07-21 | 2012-10-02 | Mdi-Motor Development International S.A. | Ambient temperature thermal energy and constant pressure cryogenic engine |
AP2686A (en) * | 2006-07-21 | 2013-06-27 | Mdi Motor Dev Internat Sa | Ambient temperature thermal energy and constant pressure cryogenic engine |
KR101457901B1 (ko) | 2006-07-21 | 2014-11-07 | 엠디아이 모터 디벨로프먼트 인터내셔날 에스.에이. | 상온 열에너지 등압 극저온 엔진 |
EP2515057A1 (de) * | 2011-04-20 | 2012-10-24 | Messer Group GmbH | Verfahren und Vorrichtung zur Regelung der Temperatur eines fluiden Mediums |
Also Published As
Publication number | Publication date |
---|---|
EP1271075B1 (de) | 2008-03-26 |
DE10129780A1 (de) | 2003-01-02 |
ATE390608T1 (de) | 2008-04-15 |
DE50211946D1 (de) | 2008-05-08 |
JP2003097859A (ja) | 2003-04-03 |
US20030024251A1 (en) | 2003-02-06 |
US6619047B2 (en) | 2003-09-16 |
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