DE656309C - Absorbent for continuous absorption refrigeration machines - Google Patents

Absorbent for continuous absorption refrigeration machines

Info

Publication number
DE656309C
DE656309C DEG90580D DEG0090580D DE656309C DE 656309 C DE656309 C DE 656309C DE G90580 D DEG90580 D DE G90580D DE G0090580 D DEG0090580 D DE G0090580D DE 656309 C DE656309 C DE 656309C
Authority
DE
Germany
Prior art keywords
absorbent
ammonia
liquid
refrigeration machines
absorption refrigeration
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
DEG90580D
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.)
DRUCKTRANSFORMATOREN KOENEMANN
Original Assignee
DRUCKTRANSFORMATOREN KOENEMANN
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 DRUCKTRANSFORMATOREN KOENEMANN filed Critical DRUCKTRANSFORMATOREN KOENEMANN
Priority to DEG90580D priority Critical patent/DE656309C/en
Application granted granted Critical
Publication of DE656309C publication Critical patent/DE656309C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00Heat-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
    • C09K5/02Materials undergoing a change of physical state when used
    • C09K5/04Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
    • C09K5/047Materials 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

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)
  • Sorption Type Refrigeration Machines (AREA)

Description

Absorptionsmittel für kontinuierlich arbeitende Absorptionskältemaschinen Als Absorptionsmittel für kontinuierlich arbeitende Absorptionslzältemaschinen sind bereits die flüssigen Verbindungen verschiedener wasserfreier Salze mit Ammoniak oder Aminen vorgeschlagen worden, in erster Linie die Verbindungen von Ammoniumnitrat, Amrnoniumthiocvanat und Lithiumnitrat mit Ammoniak. -Von diesen Verbindungen hat sich bisher Lithiutnnitrat am besten bewährt. Ammoniumnitrat mit Ammoniak scheidet nämlich bereits bei 30° und i at abs. feste Kristalle aus, und Ainmoniumthiocvanat mit Ammoniak ist nicht temperaturfest und zersetzt sich bereits bei 1501.Absorbent for continuous absorption chillers As absorption media for continuously operating absorption refrigeration machines already the liquid compounds of various anhydrous salts with ammonia or amines have been proposed, primarily the compounds of ammonium nitrate, Ammonium thiocvanate and lithium nitrate with ammonia. -Of these connections has Up to now, lithium nitrate has proven itself best. Ammonium nitrate separates with ammonia namely already at 30 ° and i at abs. solid crystals, and ammonium thiocvanate with ammonia is not temperature-resistant and decomposes as early as 1501.

Lithiumnitrat mit Ammoniak dagegen ist völlig stabil, und es kann bei i atabs. auf etwa 70° erwärmt werden, bevor feste Kristalle ausfallen.Lithium nitrate with ammonia, on the other hand, is completely stable, and it can at i atabs. be heated to about 70 ° before solid crystals precipitate.

Diese Eigenschaft ermöglicht es, daß diese Flüssigkeit bei normalen Kühlwassertemperaturen noch Ammoniak bei etwa 0,3 at abs: absorbiert und somit für eine Erzeugung von Kälte bei - 55° geeignet ist.This property enables this liquid to still absorb ammonia at about 0.3 at abs: at normal cooling water temperatures and is therefore suitable for generating cold at -55 °.

Die Erfindung bezieht sich nun auf eine Verbesserung und Verbilligung dieser Absorptionsflüssigkeit. Es wurde gefunden, (laß ein Zusatz von etwa io°/o Zinkchlorid, bezogen auf den Gehalt an Li N03 in der Flüssigkeit, einAustreiben von \7H3 bei i at abs. bis zu 78- ermöglicht, ohne daß Kristalle sich bilden, während ohne Zusatz bei 78° sich Kristalle bilden. Weiter hat sich ergeben: Ohne Zusatz bildet eine Flüssigkeit mit Austreibepunkt 63° bei i6° Kristalle, mit Austreibepunkt 68° bei 35° Kristalle. mit Austreibepunkt 73° bei 35° sehr viel Kristalle.The invention now relates to an improvement and making this absorption liquid cheaper. It has been found that (an addition of about 10% zinc chloride, based on the content of LiNO3 in the liquid, enables an expulsion of \ 7H3 at iat abs. Up to 78- without crystals forming, while without Addition, crystals form at 78.degree .. In addition, without addition, a liquid with an expulsion point of 63.degree. At 16.degree. Forms crystals, with an expulsion point of 68.degree. At 35.degree., Crystals with an expulsion point of 73.degree. At 35.degree.

lfit Zusatz bildet eine Flüssigkeit mit Austreibepunkt 63° bei o° keine Kristalle, mit Austreibepunkt 683 bei 30° erst nach 16 Stunden wenig Kristalle, mit Austreibepunkt 3° bei 33° nach'/, Stunde sehr wenig Kristalle.lfit additive forms a liquid with an expulsion point of 63 ° at 0 ° no crystals, with expulsion point 683 at 30 ° only few crystals after 16 hours, with an expulsion point of 3 ° at 33 ° after 1/1 hour, very few crystals.

1 an sieht hieraus deutlich, daß die Kristallbildung durch den Zusatz von Zinkchlorid verzögert wird. Die Absorptionsfähigkeit der Flüssigkeit, die bei höherem Austreibungspunkt größer ist, wird also durch den Zusatz. verbessert, so daß bei einer Kälteanlage tiefere Temperaturen oder ein günstigeres Umlaufverhältnis zwischen Ammoniakgas und Flüssigkeit erreicht wird. 1 shows clearly from this that the crystal formation is delayed by the addition of zinc chloride. The absorption capacity of the liquid, which is greater at a higher expulsion point, is therefore increased by the addition. improved, so that lower temperatures or a more favorable circulation ratio between ammonia gas and liquid is achieved in a refrigeration system.

Aber auch wenn man nicht diese tiefe Temperatur erreichen will, ist die Verwendung des vorgeschlagenen Stoffes von Vorteil. Die Möglichkeit der Kristallisation innerhall) der Anlage bei Kühlen der ausgegasten, ammoniakarmen Flüssigkeit wird ausgeschaltet und die Betriebssicherheit erhöht. Ferner kann der spezifische Umlauf zwischen Absorber und Austreiber verringert und der @@"ärinebedarf der Anlage verringert werden, und vor allem wird eine betr:ichtliche Frsparnis erzielt. da das Lithiiimnitrat etwa ioma1 teurer ist als das Zinkchlorid.But even if you don't want to reach this low temperature, is the use of the proposed substance is beneficial. The possibility of crystallization inside) of the system when the outgassed, ammonia-poor liquid is cooled switched off and operational safety increased. Furthermore, the specific circulation between the absorber and the expeller is reduced and the system's need for energy is reduced and, above all, there will be considerable savings achieved. since lithium nitrate is about iom1 more expensive than zinc chloride.

Ohne das Wesen der Erfindung zu ändern, kann man der Flüssigkeit auch noch weitere Salze zuffgen, wie z. B. Na Cl, Li T, Al C13 u. a., um weitere Verbesserungen zu erzielen.Without changing the essence of the invention, one can also use the liquid add more salts, such as B. Na Cl, Li T, Al C13 and others for further improvements to achieve.

_211e diese Salze bewirken eine Senkung cler Kristallisationsgrenze, die aber weniger Mark ist als bei Zusltz von Zinkchlorid._211e these salts cause a lowering of the crystallization limit, but it is less mark than with the addition of zinc chloride.

Claims (1)

Pnrr-_NTANSI'IZUC1I: Flüssiges, wasserfreies Absorptionsmittel für Ammoniak in kontinuierlich arbeitenden Kältemaschinen mit Lithium: nitratammoniakat als Hauptbestandteil, dadurch gekennzeichnet, daß Salze, die die Kristallisation hemmen, z. B. Zinkchlorid, -zugesetzt werden.Pnrr-_NTANSI'IZUC1I: Liquid, anhydrous absorbent for Ammonia in continuously operating refrigeration machines with lithium: nitrate ammonia as the main ingredient, characterized in that salts that promote crystallization inhibit, e.g. B. zinc chloride, are added.
DEG90580D 1935-06-04 1935-06-04 Absorbent for continuous absorption refrigeration machines Expired DE656309C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEG90580D DE656309C (en) 1935-06-04 1935-06-04 Absorbent for continuous absorption refrigeration machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG90580D DE656309C (en) 1935-06-04 1935-06-04 Absorbent for continuous absorption refrigeration machines

Publications (1)

Publication Number Publication Date
DE656309C true DE656309C (en) 1938-02-02

Family

ID=7139320

Family Applications (1)

Application Number Title Priority Date Filing Date
DEG90580D Expired DE656309C (en) 1935-06-04 1935-06-04 Absorbent for continuous absorption refrigeration machines

Country Status (1)

Country Link
DE (1) DE656309C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0120085A1 (en) * 1982-09-29 1984-10-03 Erickson Donald C Aqueous absorbent for absorption cycle heat pump.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0120085A1 (en) * 1982-09-29 1984-10-03 Erickson Donald C Aqueous absorbent for absorption cycle heat pump.
EP0120085A4 (en) * 1982-09-29 1985-06-26 Erickson Donald C Aqueous absorbent for absorption cycle heat pump.

Similar Documents

Publication Publication Date Title
DE656309C (en) Absorbent for continuous absorption refrigeration machines
DE3204238C2 (en)
DE529539C (en) Process for the production of anhydrous magnesium potassium nitrate
DE694721C (en) Dehumidification of gases
DE599899C (en) Process for the production of potassium metasilicate
AT26685B (en) Process for the production of cyano compounds from gases containing cyano and ammonia.
DE672661C (en) Process for the production of copper vitriol from the copper-containing spinning acid which occurs in the production of copper rayon
AT153178B (en) Process for the production of contact sulfuric acid.
DE669141C (en) Method and device for the operation of absorption refrigeration machines
DE3382638T2 (en) METHOD FOR TRANSPORTING, COOLING AND COMPRESSING GASES CONTAINING NITROGENOXIDE.
DE878196C (en) Method for drying moist chlorine gas
AT124654B (en) Process for cooling metal vapor rectifiers.
DE469003C (en) Process for the separate production of ammonia and ammonia compounds from gases
AT242703B (en) Process for purifying melamine
DE738333C (en) Periodic absorption refrigeration machine
DE976733C (en) Process for the treatment of gas water and similar solutions
DE657193C (en) Production of magnesium oxide and calcium carbonate
DE973071C (en) Process for the production of disodium phosphate from trisodium phosphate
DE1814258C (en) Flux for galvanizing, tinning and leading
GB384142A (en) Improvements in the production of double salts of calcium nitrate
US1009560A (en) Process of rendering commercial salts non-deliquescent.
AT87674B (en) Process for the production of low-iron ammonium aluminum sulphate from iron sulphate-containing aluminum sulphate solutions.
DE552007C (en) Manufacture of potassium nitrate from aluminum nitrate and potassium chloride
DE371045C (en) Process for the extraction of technically valuable substances from alkali bisulphate
DE403844C (en) Process for the production of alkali nitrates by reacting alkali chlorides with nitrates