RU96102156A - METHOD FOR PRODUCING VERY LOW TEMPERATURES - Google Patents

METHOD FOR PRODUCING VERY LOW TEMPERATURES

Info

Publication number
RU96102156A
RU96102156A RU96102156/06A RU96102156A RU96102156A RU 96102156 A RU96102156 A RU 96102156A RU 96102156/06 A RU96102156/06 A RU 96102156/06A RU 96102156 A RU96102156 A RU 96102156A RU 96102156 A RU96102156 A RU 96102156A
Authority
RU
Russia
Prior art keywords
mixture
temperature
point
mixing
low temperatures
Prior art date
Application number
RU96102156/06A
Other languages
Russian (ru)
Other versions
RU2117883C1 (en
Inventor
Даниэль Бенуа Алан
Пюжоль Серж
Original Assignee
Сантр Насьональ Детюд Спасьаль
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
Priority claimed from FR9308201A external-priority patent/FR2707375B1/en
Application filed by Сантр Насьональ Детюд Спасьаль filed Critical Сантр Насьональ Детюд Спасьаль
Publication of RU96102156A publication Critical patent/RU96102156A/en
Application granted granted Critical
Publication of RU2117883C1 publication Critical patent/RU2117883C1/en

Links

Claims (1)

1. Способ получения сверхнизких температур, согласно которому 4Не и 3Не, которые охлаждают с помощью теплообменников до температуры порядка 0,2К или ниже, непрерывно вводят в точку (5), где их смешивают для поглощения тепла растворения 3Не в 4Не, производя таким образом охлаждение образовавшейся двухфазной смеси, при этом смесь (М) отводят по заранее предусмотренному трубопроводу для предотвращения диффузии 3Не противотоком и уменьшения растворения 3Не, причем теплообменник (4) вблизи точки (5) смешивания используют для охлаждения жидкостей, направляемых к самой холодной точке, с помощью отведенной смеси (М), циркулирующей в противоположном направлении, отличающийся тем, что 4Не и 3Не, предназначенные для смешивания, охлаждают от температуры их подачи до температуры ниже 2,5К при теплообмене с отведенной смесью, при этом мощность поглощается при использовании расширения Джоуля-Томсона этой смеси, что позволяют таким образом этой системе функционировать с температурой подачи выше 4К
2. Способ по п. 1, отличающийся тем, что расширения Джоуля-Томсона осуществляют путем понижения давления до примерно 1 - 50 мбар, а давление подачи 4Не и 3Не составляет примерно 2 - 15 бар.1. A method of producing ultra-low temperatures, according to which 4He and 3He, which are cooled by heat exchangers to a temperature of the order of 0.2 K or lower, are continuously introduced at point (5), where they are mixed to absorb the heat of dissolution of 3He in 4He, thereby cooling the resulting two-phase mixture, while the mixture (M) is discharged through a predetermined pipeline to prevent diffusion of 3He countercurrent and to reduce the dissolution of 3He, and the heat exchanger (4) near the mixing point (5) is used to cool liquids, e.g. directed to the coldest point, using the allocated mixture (M) circulating in the opposite direction, characterized in that 4He and 3He, intended for mixing, are cooled from the temperature of their supply to a temperature below 2.5 K during heat exchange with the allocated mixture, power is absorbed when using the Joule-Thomson expansion of this mixture, which allows this system to thus operate with a feed temperature above 4K
2. The method according to p. 1, characterized in that the Joule-Thomson expansion is carried out by lowering the pressure to about 1 to 50 mbar, and the supply pressure of 4He and 3He is about 2 to 15 bar. 3. Способ по п. 1 или 2, отличающийся тем, что расширение и возможное последующее испарение смеси проводят при 1,5 - 2,5К. 3. The method according to p. 1 or 2, characterized in that the expansion and possible subsequent evaporation of the mixture is carried out at 1.5 - 2.5K. 4. Способ по одному из пп. 1 - 3, отличающийся тем, что точка смешивания (5) и прилегающий к ней теплообменник (4) размещены в корпусе (13), поддерживаемом при температуре ниже 2,5К. 4. The method according to one of paragraphs. 1 to 3, characterized in that the mixing point (5) and the adjacent heat exchanger (4) are placed in the housing (13), maintained at a temperature below 2.5K.
RU96102156A 1993-07-05 1994-07-04 Method of obtaining very low temperatures RU2117883C1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9308201A FR2707375B1 (en) 1993-07-05 1993-07-05 Process for obtaining very low temperatures.
FR93/08201 1993-07-05

Publications (2)

Publication Number Publication Date
RU96102156A true RU96102156A (en) 1998-05-20
RU2117883C1 RU2117883C1 (en) 1998-08-20

Family

ID=9448906

Family Applications (1)

Application Number Title Priority Date Filing Date
RU96102156A RU2117883C1 (en) 1993-07-05 1994-07-04 Method of obtaining very low temperatures

Country Status (8)

Country Link
US (1) US5657635A (en)
EP (1) EP0706632B1 (en)
JP (1) JP3304978B2 (en)
AT (1) ATE164441T1 (en)
DE (1) DE69409236T2 (en)
FR (1) FR2707375B1 (en)
RU (1) RU2117883C1 (en)
WO (1) WO1995002158A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0421111D0 (en) * 2004-09-22 2004-10-27 Oxford Instr Superconductivity Cryogenic flow valve system
FR2934674A1 (en) * 2008-07-31 2010-02-05 Air Liquide REFRIGERATOR AND METHOD FOR PRODUCING VERY LOW TEMPERATURE COLD
DE102009025544B3 (en) * 2009-06-19 2010-09-23 Institut für Luft- und Kältetechnik gGmbH Solution cooling machine for cooling detector of astronomical device, has chamber comprising geometry in which middle area has large volume, where gaps between bodies and walls of chamber and/or still move phases between walls and bodies
US8991150B2 (en) 2012-07-27 2015-03-31 Board Of Trustees Of Northern Illinois University High specific impulse superfluid and nanotube propulsion device, system and propulsion method
US10240875B2 (en) * 2014-07-09 2019-03-26 The Regents Of The University Of California Active cryogenic electronic envelope

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2322337A1 (en) * 1975-08-26 1977-03-25 Air Liquide REFRIGERANT SUPPLY DEVICE FOR AN OPEN CIRCUIT REFRIGERATOR, AND REFRIGERATION SYSTEM INCLUDING SUCH A DEVICE
US4080802A (en) * 1976-07-14 1978-03-28 International Telephone And Telegraph Corporation Hybrid gas cryogenic cooler
DE3435229A1 (en) * 1984-09-26 1986-04-03 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe CRYSTATE FOR OPERATING A (ARROW UP) 3 (ARROW UP) HE (ARROW UP) 4 (ARROW UP) HE MIXING UNIT
SU1229528A1 (en) * 1984-10-15 1986-05-07 Всесоюзный научно-исследовательский институт гелиевой техники Method of starting 3he - 4he refrigerator
US4697425A (en) * 1986-04-24 1987-10-06 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Oxygen chemisorption cryogenic refrigerator
FR2626658B1 (en) * 1988-02-03 1990-07-20 Centre Nat Etd Spatiales PROCESS AND APPARATUS FOR OBTAINING VERY LOW TEMPERATURES
DE3941314A1 (en) * 1989-12-14 1991-06-20 Bodenseewerk Geraetetech COOLING DEVICE
US5063747A (en) * 1990-06-28 1991-11-12 United States Of America As Represented By The United States National Aeronautics And Space Administration Multicomponent gas sorption Joule-Thomson refrigeration
US5119637A (en) * 1990-12-28 1992-06-09 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Ultra-high temperature stability Joule-Thomson cooler with capability to accommodate pressure variations

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