FR2000830A1 - Low temperature environmental test system - Google Patents

Low temperature environmental test system

Info

Publication number
FR2000830A1
FR2000830A1 FR6901465A FR6901465A FR2000830A1 FR 2000830 A1 FR2000830 A1 FR 2000830A1 FR 6901465 A FR6901465 A FR 6901465A FR 6901465 A FR6901465 A FR 6901465A FR 2000830 A1 FR2000830 A1 FR 2000830A1
Authority
FR
France
Prior art keywords
component
environmental test
test system
low temperature
cclf3
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.)
Withdrawn
Application number
FR6901465A
Other languages
French (fr)
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.)
ASSOCIATED TESTING LABO
Original Assignee
ASSOCIATED TESTING LABO
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 ASSOCIATED TESTING LABO filed Critical ASSOCIATED TESTING LABO
Publication of FR2000830A1 publication Critical patent/FR2000830A1/en
Withdrawn legal-status Critical Current

Links

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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
    • F25B9/006—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant containing more than one component

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)

Abstract

Refrigerant for a low temp. environmental test system comprises a mixture of (a) CF2Cl2, CHClF2 or an azeotrope of CHClF2 (e.g. 48.8%) and C2ClF5 (e.g. 51.2%) with (b) CClF3 or an azeotrope of CHF3 (e.g. 40.1%) and CClF3 (e.g. 59.9%). Component (a) is condensed from the mixture and separated from component (b) and component (b) is selectively condensed by counter-current evapn. of component (a) by heat exchange therewith. Permits the ready attainment of temps. as low as -85 degrees F in a simple and inexpensive unit formed of conventional and readily available component and the consequent availability of an inexpensive environmental test chamber construction having a markedly expanded operating test range.
FR6901465A 1968-01-26 1969-01-24 Low temperature environmental test system Withdrawn FR2000830A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US70094368A 1968-01-26 1968-01-26

Publications (1)

Publication Number Publication Date
FR2000830A1 true FR2000830A1 (en) 1969-09-12

Family

ID=24815451

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6901465A Withdrawn FR2000830A1 (en) 1968-01-26 1969-01-24 Low temperature environmental test system

Country Status (3)

Country Link
US (1) US3487653A (en)
DE (1) DE1903585A1 (en)
FR (1) FR2000830A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2474151A1 (en) * 1980-01-21 1981-07-24 Inst Francais Du Petrole METHOD OF PRODUCING HEAT USING A HEAT PUMP USING A SPECIFIC MIXTURE OF FLUIDS AS A WORKING AGENT
FR2514875A1 (en) * 1981-10-19 1983-04-22 Inst Francais Du Petrole METHOD OF HEATING AND / OR THERMALLY CONDITIONING A LOCAL USING A COMPRESSION HEAT PUMP USING A SPECIFIC MIXTURE OF WORKING FLUIDS
EP0081395A1 (en) * 1981-10-19 1983-06-15 Institut Français du Pétrole Fluid for a heat pump and process for treating and/or thermally conditioning a room by means of a compression heat pump using a specific mixture of working fluids

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3768273A (en) * 1972-10-19 1973-10-30 Gulf & Western Industries Self-balancing low temperature refrigeration system
JPS5354351A (en) * 1976-10-28 1978-05-17 Toshiba Corp Refrigerating cycles
US4580415A (en) * 1983-04-22 1986-04-08 Mitsubishi Denki Kabushiki Kaisha Dual refrigerant cooling system
KR860002704A (en) * 1984-09-06 1986-04-28 야마시다 도시히꼬 Heat pump
US4913714A (en) * 1987-08-03 1990-04-03 Nippondenso Co., Ltd. Automotive air conditioner
ES2939683T3 (en) * 2016-11-01 2023-04-26 Weiss Technik Gmbh test chamber
DE102017216361A1 (en) * 2017-09-14 2019-03-14 Weiss Umwelttechnik Gmbh Process for the conditioning of air
CN110887264A (en) * 2019-11-22 2020-03-17 上海交通大学 Device for controlling heat-humidity alternating environment and heat-humidity alternating test box

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1738233A (en) * 1923-01-16 1929-12-03 Fernan O Conill Refrigeration
US2181853A (en) * 1938-02-23 1939-11-28 Westinghouse Electric & Mfg Co Method of charging
US2255587A (en) * 1939-03-13 1941-09-09 Borg Warner Method of heat transfer
US2938362A (en) * 1955-09-02 1960-05-31 Borg Warner Multiple fluid refrigerating system
US2998388A (en) * 1956-12-19 1961-08-29 Pennsalt Chemicals Corp Heat transfer
DE1241468B (en) * 1962-12-01 1967-06-01 Andrija Fuderer Dr Ing Compression method for generating cold

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2474151A1 (en) * 1980-01-21 1981-07-24 Inst Francais Du Petrole METHOD OF PRODUCING HEAT USING A HEAT PUMP USING A SPECIFIC MIXTURE OF FLUIDS AS A WORKING AGENT
FR2514875A1 (en) * 1981-10-19 1983-04-22 Inst Francais Du Petrole METHOD OF HEATING AND / OR THERMALLY CONDITIONING A LOCAL USING A COMPRESSION HEAT PUMP USING A SPECIFIC MIXTURE OF WORKING FLUIDS
EP0081395A1 (en) * 1981-10-19 1983-06-15 Institut Français du Pétrole Fluid for a heat pump and process for treating and/or thermally conditioning a room by means of a compression heat pump using a specific mixture of working fluids
FR2526529A2 (en) * 1981-10-19 1983-11-10 Inst Francais Du Petrole METHOD OF HEATING AND / OR THERMALLY CONDITIONING A LOCAL USING A COMPRESSION HEAT PUMP USING A SPECIFIC MIXTURE OF WORKING FLUIDS

Also Published As

Publication number Publication date
DE1903585A1 (en) 1969-08-28
US3487653A (en) 1970-01-06

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Legal Events

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