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WO2011069822A1 - Fluide de travail pour machine frigorifique à absorption - Google Patents

Fluide de travail pour machine frigorifique à absorption Download PDF

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Publication number
WO2011069822A1
WO2011069822A1 PCT/EP2010/068090 EP2010068090W WO2011069822A1 WO 2011069822 A1 WO2011069822 A1 WO 2011069822A1 EP 2010068090 W EP2010068090 W EP 2010068090W WO 2011069822 A1 WO2011069822 A1 WO 2011069822A1
Authority
WO
WIPO (PCT)
Prior art keywords
working medium
ionic liquid
lithium bromide
carbon atoms
water
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.)
Ceased
Application number
PCT/EP2010/068090
Other languages
German (de)
English (en)
Inventor
Matthias Seiler
Rolf Schneider
Olivier Zehnacker
Marc-Christoph Schneider
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.)
Evonik Operations GmbH
Original Assignee
Evonik Degussa GmbH
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 to JP2012542440A priority Critical patent/JP5479611B2/ja
Priority to CN2010800552986A priority patent/CN102639667A/zh
Priority to EP10784762A priority patent/EP2510069A1/fr
Priority to SG2012040317A priority patent/SG181463A1/en
Priority to BR112012013583A priority patent/BR112012013583A2/pt
Priority to US13/514,167 priority patent/US8696928B2/en
Priority to KR1020127014563A priority patent/KR20120120161A/ko
Priority to RU2012131105/05A priority patent/RU2012131105A/ru
Application filed by Evonik Degussa GmbH filed Critical Evonik Degussa GmbH
Priority to AU2010330188A priority patent/AU2010330188A1/en
Priority to CA2783679A priority patent/CA2783679A1/fr
Priority to PH1/2012/500977A priority patent/PH12012500977A1/en
Publication of WO2011069822A1 publication Critical patent/WO2011069822A1/fr
Priority to ZA2012/04139A priority patent/ZA201204139B/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/02—Materials undergoing a change of physical state when used
    • C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/02—Materials undergoing a change of physical state when used
    • C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
    • C09K5/047—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for absorption-type refrigeration 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
    • F25B15/10—Sorption machines, plants or systems, operating continuously, e.g. absorption type with inert gas
    • 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
    • F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
    • F25B15/02—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
    • F25B15/06—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas the refrigerant being water vapour evaporated from a salt solution, e.g. lithium bromide

Definitions

  • the invention is directed to a working medium for an absorption chiller with reduced friction.
  • Refrigerant the evaporator and the condenser of a classic chiller nor a sorbent, an absorber and a desorber.
  • the vaporized refrigerant is absorbed at the pressure of evaporation in the sorbent and then desorbed in the desorber at the higher pressure of the condensation by supplying heat back from the sorbent.
  • Sorbent requires less mechanical energy than the compression of the refrigerant vapor in a classic chiller, in place of the consumption of mechanical energy occurs for the desorption of the refrigerant
  • Absorption chillers use a working medium that uses water as a refrigerant and lithium bromide as
  • Working medium can come.
  • a working medium of water and lithium bromide also acts corrosive to many materials and causes high friction and thus accelerated wear on moving parts of the
  • Example VII a describes in Example VII a) the use of the ionic liquids 1-ethyl-3-methylimidazoliummethylsulfonat, 1-ethyl-3-methylimidazoliumacetat, and 1-ethyl-3-methylimidazoliumhydroxid as additives for a
  • Lithium bromide an increased coefficient of friction, so that they can not solve the problem of high friction.
  • Lithium bromide is selected in a suitable range.
  • the invention therefore relates to a working medium for an absorption chiller comprising 5 to 30 wt .-% water and 65 to 95 wt .-% of a sorbent consisting of lithium bromide and at least one ionic liquid, wherein the sorbent ionic liquid and lithium bromide in a weight ratio from 0.5: 1 to 5: 1.
  • the invention is also a
  • Absorption chiller containing an absorber, a
  • Desorber an evaporator, a condenser, a
  • the working medium according to the invention comprises from 5 to 30% by weight of water and from 65 to 95% by weight of a sorbent consisting of lithium bromide and at least one ionic liquid.
  • a sorbent consisting of lithium bromide and at least one ionic liquid.
  • Water. water and Sorbents taken together are preferably more than 90% by weight of the working medium, and more particularly
  • the sorbent of the working medium according to the invention consists of lithium bromide and at least one ionic liquid.
  • ionic liquid refers to a salt or a mixture of salts of anions and cations, wherein the salt or the mixture of salts has a melting point of less than 100 ° C.
  • ionic liquid refers to salts or mixtures of salts free of nonionic substances or additives.
  • the ionic liquid refers to salts or mixtures of salts free of nonionic substances or additives.
  • the ionic liquid refers to a salt or a mixture of salts of anions and cations, wherein the salt or the mixture of salts has a melting point of less than 100 ° C.
  • ionic liquid refers to salts or mixtures of salts free of nonionic substances or additives.
  • the ionic liquid preferably, the ionic
  • Liquid of one or more salts of organic cations with organic or inorganic anions Liquid of one or more salts of organic cations with organic or inorganic anions.
  • Particularly suitable organic cations are cations of the general formulas (I) to (V): R R N * (I)
  • R X , R 2 , R 3 , R 4 are the same or different and
  • Hydrogen a linear or branched aliphatic or olefinic hydrocarbon radical having 1 to 30
  • Carbon atoms an aromatic hydrocarbon radical having from 6 to 40 carbon atoms, an alkylaryl radical having from 7 to 40 carbon atoms, a radical represented by one or more groups -O-, -NH-, -NR'-, -OC (O) -, - (O) CO-, -NH- C (O) -, - (O) C -NH-, - (CH 3 ) NC (O) -, - (O) CN (CH 3 ) -, -S (O 2 ) -O-,
  • R ' is an aliphatic or olefinic
  • Hydrocarbon radical having 1 to 30 carbon atoms
  • R 5 is a linear or branched hydrocarbon radical containing 2 to 4 carbon atoms, n is from 1 to 200, preferably from 2 to 60,
  • R 6 is hydrogen, a linear or branched aliphatic or olefinic hydrocarbon radical having 1 to 30
  • Carbon atoms an aromatic hydrocarbon radical having 6 to 40 carbon atoms, an alkylaryl radical having 7 to 40 carbon atoms or a radical -C (O) -R 7 ,
  • R 7 is a linear or branched aliphatic or olefinic hydrocarbon radical having 1 to 30
  • Carbon atoms an aromatic hydrocarbon radical having 6 to 40 carbon atoms or an alkylaryl radical having 7 to 40 carbon atoms, wherein at least one and preferably each of R, R 2 , R 3 and R 4 is other than hydrogen.
  • heteroaromatic cations having at least one quaternary nitrogen atom in the ring, which carries a radical R 1 as defined above, preferably substituted on the nitrogen atom derivatives of pyrrole, pyrazole, imidazole, oxazole, isoxazole, thiazole, isothiazole, pyridine, pyrimidine, pyrazine, indole , Quinoline, isoquinoline, cinnoline, quinoxaline or phthalazine.
  • R a OS03 are ⁇ , R a S0 3 ", R a OP0 3 2" (R a O) 2 P0 2 ", R a P0 3 2", R a COO "(R a CO ) 2 N " ,
  • the ionic liquid comprises one or more 1,3-dialkylimidazolium salts, the alkyl groups being particularly preferably selected independently of one another from methyl, ethyl, n-propyl, n-butyl and n-hexyl. Particularly preferred ionic
  • Liquids are salts of one or more of
  • the ionic liquid comprises one or more quaternary
  • R 1 is an alkyl radical having 1 to 20 carbon atoms
  • R 2 is an alkyl radical having 1 to 4 carbon atoms
  • R 4 is an alkyl radical having 1 to 4 carbon atoms or a radical (CH 2 CHRO) n -H where n is from 1 to 200 and R is H or CH 3 .
  • ionic liquids are used which are immiscible with water, stable to hydrolysis and thermally stable up to a temperature of 150 ° C.
  • the sorbent of the working medium according to the invention contains ionic liquid and lithium bromide in a weight ratio of 0.5: 1 to 5: 1.
  • the weight ratio of 0.5: 1 to 2: 1 and more preferably from 1: 1 to 2: 1.
  • Lithium bromide in the sorbent chosen so that the
  • Working medium of 30 wt .-% remains single phase.
  • Particularly preferred is the ionic liquid and the
  • Lithium bromide in the sorbent chosen so that the working medium in a desorption of water to a water content in the working medium of 5 wt .-% and at an absorption of water to a water content in the
  • the working medium may contain other additives besides the sorbent and water.
  • the working medium contains as additive nor one or more corrosion inhibitors. It can all from the prior art than for in the
  • Absorption chiller used materials suitably known, non-volatile corrosion inhibitors can be used. Further preferred additives are wetting-requiring
  • Additives which can be used in an amount of 0.01 to 10 wt .-% based on the working medium.
  • An absorption refrigeration machine comprises an absorber, a desorber, an evaporator, a condenser, a circulation pump and a circulating pump with absorber and desorber with the circulating pump
  • Composition has.
  • the working media of the invention show a clear compared to the known from the prior art working media of water and lithium bromide, and water, lithium bromide and 1-butyl-3-methylimidazoliumbromid
  • the working media according to the invention thus enable the use of pumps whose bearings are in contact with the
  • the working media according to the invention can be used not only in absorption chillers in which the absorption of heat by the coolant in the evaporator is used for cooling, but can also in
  • Absorption heat pumps are used, in which the i absorber and released in the condenser heat is used for heating.
  • Diameter as friction partners both made of polished stainless steel 1.3505 with a surface roughness of 0.01 ym, with a force of 30 N, a contact pressure of 947.8 MPa and a sliding-roll ratio of 50%.
  • Table 1 summarizes the composition of the working media tested in Examples 1 to 6.
  • Example 1 is a working medium of water
  • Lithium bromide without a proportion of ionic liquid as used in commercially available absorption chillers.
  • Examples 2 and 3 are working media according to the prior art of K.-S. Kim et al. , in Korean J. Chem. Eng., 23 (2006) 113-116, with a weight ratio of
  • Examples 4 to 6 are working media according to the invention with 1-butyl-3-methylimidazolium bromide as ionic liquid.
  • composition of the investigated working media Composition of the investigated working media
  • Fig. 1 the Stribeck curve (friction coefficient ⁇ against velocity difference v between the friction surfaces in mm / s) is plotted at 40 ° C for the working media of Examples 1 to 3 (Example 1: empty circles;
  • Example 2 empty triangles
  • Example 3 empty squares
  • Fig. 2 shows the corresponding Stribeck curves at 70 ° C.
  • FIG. 3 the Stribeck curve (coefficient of friction ⁇ against velocity difference v between the friction surfaces in mm / s) at 40 ° C. is plotted for the working media of Examples 3 to 6 (Example 3: empty squares, Example 4: filled circles, Example 5: filled triangles, Example 6: stars).
  • Fig. 4 shows the corresponding
  • Fig. 5 is for the working media of Examples 1, 7 and 8, the Stribeck curve (friction coefficient ⁇ against
  • Example 7 filled squares
  • Example 8 filled
  • Fig. 6 shows the corresponding Stribeck curves at 70 ° C.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Lubricants (AREA)

Abstract

La présente invention concerne un milieu de travail destiné à machine frigorifique à absorption. Ce fluide est constitué d'eau, représentant de 5% à 30% de son poids, et d'un sorbant, lui-même constitué de bromure de lithium et d'un liquide ionique. Dans le sorbant, le rapport pondéral entre liquide ionique et bromure de lithium se situe dans une plage allant de 0,5:1 à 5:1. Ce fluide de travail présente un coefficient de frottement réduit par rapport à un fluide de travail fait d'eau et de bromure de lithium.
PCT/EP2010/068090 2009-12-07 2010-11-24 Fluide de travail pour machine frigorifique à absorption Ceased WO2011069822A1 (fr)

Priority Applications (12)

Application Number Priority Date Filing Date Title
KR1020127014563A KR20120120161A (ko) 2009-12-07 2010-11-24 흡수 냉각 장치용 작업 매질
EP10784762A EP2510069A1 (fr) 2009-12-07 2010-11-24 Fluide de travail pour machine frigorifique à absorption
SG2012040317A SG181463A1 (en) 2009-12-07 2010-11-24 Operating medium for an absorption refrigeration device
BR112012013583A BR112012013583A2 (pt) 2009-12-07 2010-11-24 meio de operação para um dispositivo de refrigeração por absorção
US13/514,167 US8696928B2 (en) 2009-12-07 2010-11-24 Operating medium for an absorption refrigeration device
RU2012131105/05A RU2012131105A (ru) 2009-12-07 2010-11-24 Рабочее тело для абсорбционной холодильной машины
AU2010330188A AU2010330188A1 (en) 2009-12-07 2010-11-24 Operating medium for an absorption refrigeration device
JP2012542440A JP5479611B2 (ja) 2009-12-07 2010-11-24 吸収式冷凍機用作動媒体
CN2010800552986A CN102639667A (zh) 2009-12-07 2010-11-24 用于吸收式制冷装置的工作介质
CA2783679A CA2783679A1 (fr) 2009-12-07 2010-11-24 Fluide de travail pour machine frigorifique a absorption
PH1/2012/500977A PH12012500977A1 (en) 2009-12-07 2010-11-24 Operating medium for an absorption refrigeration device
ZA2012/04139A ZA201204139B (en) 2009-12-07 2012-06-06 Operating medium for an absorption refrigeration device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009047564.8 2009-12-07
DE102009047564A DE102009047564A1 (de) 2009-12-07 2009-12-07 Arbeitsmedium für eine Absorptionskältemaschine

Publications (1)

Publication Number Publication Date
WO2011069822A1 true WO2011069822A1 (fr) 2011-06-16

Family

ID=43602756

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/068090 Ceased WO2011069822A1 (fr) 2009-12-07 2010-11-24 Fluide de travail pour machine frigorifique à absorption

Country Status (14)

Country Link
US (1) US8696928B2 (fr)
EP (1) EP2510069A1 (fr)
JP (1) JP5479611B2 (fr)
KR (1) KR20120120161A (fr)
CN (1) CN102639667A (fr)
AU (1) AU2010330188A1 (fr)
BR (1) BR112012013583A2 (fr)
CA (1) CA2783679A1 (fr)
DE (1) DE102009047564A1 (fr)
PH (1) PH12012500977A1 (fr)
RU (1) RU2012131105A (fr)
SG (1) SG181463A1 (fr)
WO (1) WO2011069822A1 (fr)
ZA (1) ZA201204139B (fr)

Cited By (1)

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JP2017036914A (ja) * 2010-11-08 2017-02-16 エボニック デグサ ゲーエムベーハーＥｖｏｎｉｋ Ｄｅｇｕｓｓａ ＧｍｂＨ 吸収式ヒートポンプのための作動媒体

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EP2088389B1 (fr) * 2008-02-05 2017-05-10 Evonik Degussa GmbH Machine de refroidissement à absorption
EP2087930A1 (fr) * 2008-02-05 2009-08-12 Evonik Degussa GmbH Procédé d'absorption d'une matière volatile dans un produit d'absorption liquide
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DE102011077377A1 (de) 2010-11-12 2012-05-16 Evonik Degussa Gmbh Verfahren zur Absorption von sauren Gasen aus Gasmischungen
WO2013072147A1 (fr) 2011-11-14 2013-05-23 Evonik Degussa Gmbh Procédé et dispositif servant à séparer des gaz acides à partir d'un mélange gazeux
DE102012200907A1 (de) 2012-01-23 2013-07-25 Evonik Industries Ag Verfahren und Absorptionsmedium zur Absorption von CO2 aus einer Gasmischung
DE102012207509A1 (de) 2012-05-07 2013-11-07 Evonik Degussa Gmbh Verfahren zur Absorption von CO2 aus einer Gasmischung
EP2735820A1 (fr) * 2012-11-21 2014-05-28 Evonik Industries AG Pompe à chaleur à absorption et sorbant pour une pompe à chaleur à absorption comprenant de l'acide méthanosulfonique
JP6655063B2 (ja) * 2015-03-20 2020-02-26 国立大学法人東京農工大学 吸収冷凍機および除湿機
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CN105400496A (zh) * 2015-11-30 2016-03-16 中国科学院青海盐湖研究所 一种离子液体基相变储能材料及其制备方法
CN105385418A (zh) * 2015-11-30 2016-03-09 中国科学院青海盐湖研究所 一种基于类离子液体的相变储能材料及其制备方法
WO2017205807A1 (fr) * 2016-05-26 2017-11-30 Yazaki Corporation Mélanges eutectiques de liquides ioniques dans des refroidisseurs à absorption
JP2019517654A (ja) 2016-05-26 2019-06-24 矢崎総業株式会社 吸収式冷凍機におけるグアニジニウム系イオン液体
EP3257568B1 (fr) 2016-06-14 2019-09-18 Evonik Degussa GmbH Procede de deshumidification de melanges gazeux humides par des liquides ioniques
DE102016210483A1 (de) 2016-06-14 2017-12-14 Evonik Degussa Gmbh Verfahren und Absorptionsmittel zur Entfeuchtung von feuchten Gasgemischen
DE102016210481B3 (de) 2016-06-14 2017-06-08 Evonik Degussa Gmbh Verfahren zum Reinigen einer ionischen Flüssigkeit
DE102016210484A1 (de) 2016-06-14 2017-12-14 Evonik Degussa Gmbh Verfahren zur Entfeuchtung von feuchten Gasgemischen
DE102016210478A1 (de) 2016-06-14 2017-12-14 Evonik Degussa Gmbh Verfahren zur Entfeuchtung von feuchten Gasgemischen
EP3257843A1 (fr) 2016-06-14 2017-12-20 Evonik Degussa GmbH Procédé pour préparer un sel tres pur d'imidazolium
CN107163917A (zh) * 2017-06-20 2017-09-15 大连理工大学 离子液体溶液基纳米流体直接吸收太阳能空调/热泵方法和装置
JP6444556B1 (ja) * 2018-05-25 2018-12-26 株式会社日立パワーソリューションズ 吸収冷温水機、吸収冷温水機用追加液、吸収冷温水機用吸収液及びメンテナンス方法
WO2020114576A1 (fr) 2018-12-04 2020-06-11 Evonik Operations Gmbh Processus pour déshumidifier des mélanges de gaz humides
EP3810578B1 (fr) * 2019-01-15 2023-01-04 Yazaki Corporation Additifs liquides ioniques destinés à être utilisés comme absorbant dans des refroidisseurs à absorption
CN113025282B (zh) * 2021-03-26 2022-04-08 苏州佳永新能源科技有限公司 一种化学吸收循环用复配吸附介质
CN113403131B (zh) * 2021-06-16 2022-06-10 中国科学院兰州化学物理研究所 一种超润滑水基切削液
CN113604204B (zh) * 2021-07-27 2022-05-31 中国科学院金属研究所 一种无机塑晶材料在固态制冷中的应用

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