DE697055C - Procedure for securing the operation of compression refrigeration machines - Google Patents

Procedure for securing the operation of compression refrigeration machines

Info

Publication number
DE697055C
DE697055C DE1938E0051560 DEE0051560D DE697055C DE 697055 C DE697055 C DE 697055C DE 1938E0051560 DE1938E0051560 DE 1938E0051560 DE E0051560 D DEE0051560 D DE E0051560D DE 697055 C DE697055 C DE 697055C
Authority
DE
Germany
Prior art keywords
compression refrigeration
securing
refrigeration machines
procedure
refrigerants
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
Application number
DE1938E0051560
Other languages
German (de)
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.)
Escher Wyss Werke Lindau G M B
Original Assignee
Escher Wyss Werke Lindau G M B
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 Escher Wyss Werke Lindau G M B filed Critical Escher Wyss Werke Lindau G M B
Application granted granted Critical
Publication of DE697055C publication Critical patent/DE697055C/en
Expired 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
    • C09K5/041—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems
    • C09K5/044—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds
    • 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
    • C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
    • C09K2205/10—Components
    • C09K2205/11—Ethers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Verfahren zur Sicherung des Betriebes von Kompressions-Kältemaschinen Sämtliche Kältemittel, die aus organischen. Verbindungen mit Halogenen bestehen, harren den Nachteil, daß sie alle sehr empfindlich sind gegen Wasser, und zwar selbst, wenn davon nur Spuren vorhanden sind.Process to ensure the operation of compression refrigeration machines All refrigerants made from organic. Compounds with halogens have the disadvantage that they are all very sensitive to water, even if only traces of it are present.

Solche Kältemittel sind beispielsweise: Methylchlorid (C H3 C1), Äthylchlorid (C2 H5 C1), Vinylbromid (C2H3Br), Dichlordifiuormethan (CC12F2), Dicblortetrafluoräthan (C2C12F4) o. d91.Such refrigerants are for example: methyl chloride (C H3 C1), ethyl chloride (C2 H5 C1), vinyl bromide (C2H3Br), dichlorodifluoromethane (CC12F2), dicblortetrafluoroethane (C2C12F4) o. D91.

Das Wasser, das in solchen Kältemitteln enthalten ist, verursacht, selbst wenn es sich um nur ganz kleine Quantitäten handelt, nachstehende Störungen: Das Wasser bildet mit dem Kältemittel unterhalb o° C voluminöse, feste Hydrate, die erst bei Temperaturen von mehreren Graden über o° C wieder in Wasser und Kältemittel zerfallen. Diese Hydrate verstopfen bei Kompressionskältemaschinen die Expansionsdüse und bedingen infolgedessen Betriebsstörungen. Außerdem wirkt Wasser bei hohen Kompressionstemperaturen als Katalysator, so daß es eine Zersetzung der Kältemittel verursacht, wobei sich Halogenwasserstoffsäuren bilden, welche die Metalle korrodieren, wodurch ebenfalls Betriebsstörungen entstehen.The water contained in such refrigerants causes even if it is only a question of very small quantities, the following disturbances: The water forms voluminous, solid hydrates with the refrigerant below 0 ° C, which only return to water and refrigerant at temperatures of several degrees above 0 ° C disintegrate. These hydrates clog the expansion nozzle in compression refrigeration machines and consequently cause operational disruptions. In addition, water works at high compression temperatures as a catalyst so that it causes decomposition of the refrigerant, with itself Hydrogen halides form, which corrode the metals, thereby also Operational disruptions arise.

Um diese übelstände zu beheben, ist schon vorgeschlagen worden, den Kältemitteln Stoffe beizumischen, welche selbst noch vorhandene Spuren von Wasser aufnehmen. Dadurch konnte die Bildung von Hydraten wirksam verhindert werden; jedoch bedingt die Bei:-mischung der bis jetzt zu diesem Zwecke angewendeten Stoffe den Nachteil, daß sie ebenfalls die Zersetzung der Kältemittel befördern.In order to remedy these evils, it has already been proposed that the Mixing substances into refrigerants which even contain traces of water take up. This enabled the formation of hydrates to be effectively prevented; However conditional on the: -mixture of the substances used up to now for this purpose Disadvantage that they also promote the decomposition of the refrigerants.

Zur Sicherung des Betriebes von Kompressionskältemaschinen wird nun gemäß vorliegender Erfindung halogenhaltigen Kältemitteln ein Äther beigemischt, z. B. Dimethyläther bei einer Maschine, die mit Dichlordifluormethan betrieben wird. Äther sind imstande, das im Kältemittel noch vorhandene Wasser aufzunehmen, so daß eine Hydratbildung vermieden wird. Ferner ist der chemische Aufbau der Äther ein derartige, daß die Halogenkältemittel bei deren Beimischung nicht zersetzt werden.To secure the operation of compression refrigeration machines is now According to the present invention, an ether is added to refrigerants containing halogens, z. B. Dimethyl ether in a machine that is operated with dichlorodifluoromethane. Ethers are able to absorb the water still present in the refrigerant, so that hydrate formation is avoided. Furthermore, the chemical structure of the ether is a such that the halogen refrigerants are not decomposed when mixed with them.

Claims (1)

PATENTANSPRUCH: Verfahren zur Sicherung des Betriebes von Kompressionskältemaschinen, die mvt halogenhaltigen Kältemitteln arbeiten, insbesondere zur Verhütung der Eisbildung im Innern der Maschine, dadurch gekennzeichnet, daß dem Kältemittel ein Äther beigemischt wird.PATENT CLAIM: Process for securing the operation of compression refrigeration machines, the mvt halogen-containing refrigerants work, in particular to prevent ice formation inside the machine, characterized in that an ether is added to the refrigerant will.
DE1938E0051560 1937-09-06 1938-09-06 Procedure for securing the operation of compression refrigeration machines Expired DE697055C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH697055X 1937-09-06

Publications (1)

Publication Number Publication Date
DE697055C true DE697055C (en) 1940-10-04

Family

ID=4529701

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1938E0051560 Expired DE697055C (en) 1937-09-06 1938-09-06 Procedure for securing the operation of compression refrigeration machines

Country Status (1)

Country Link
DE (1) DE697055C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0280355A1 (en) * 1987-02-19 1988-08-31 Akzo N.V. Refrigerant and a machine having a refrigerating circuit with refrigerant
DE4241598A1 (en) * 1992-12-10 1994-06-16 Privates Inst Fuer Luft Und Ka Chlorine-free refrigerant mixt. - based on tri:fluoro:methane and hepta:fluoro:propane

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0280355A1 (en) * 1987-02-19 1988-08-31 Akzo N.V. Refrigerant and a machine having a refrigerating circuit with refrigerant
US4783276A (en) * 1987-02-19 1988-11-08 Akzo N.V. Refrigerant and a machine having a refrigerating circuit with refrigerant
DE4241598A1 (en) * 1992-12-10 1994-06-16 Privates Inst Fuer Luft Und Ka Chlorine-free refrigerant mixt. - based on tri:fluoro:methane and hepta:fluoro:propane

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