JP2536560B2 - Working medium mixture - Google Patents
Working medium mixtureInfo
- Publication number
- JP2536560B2 JP2536560B2 JP62296174A JP29617487A JP2536560B2 JP 2536560 B2 JP2536560 B2 JP 2536560B2 JP 62296174 A JP62296174 A JP 62296174A JP 29617487 A JP29617487 A JP 29617487A JP 2536560 B2 JP2536560 B2 JP 2536560B2
- Authority
- JP
- Japan
- Prior art keywords
- working medium
- medium mixture
- present
- mixture
- 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 - Lifetime
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Lubricants (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、冷凍機、ヒートポンプ等に使用し得る新規
な作動媒体混合物に関する。Description: TECHNICAL FIELD The present invention relates to a novel working medium mixture that can be used in refrigerators, heat pumps, and the like.
［従来技術］ 空調、冷凍および冷蔵機器（冷凍サイクル・ヒートポ
ンプサイクル）、廃熱回収発電（ランキンサイクル）、
熱交換機器（ヒートパイプ）等が実用化ないし試験開発
されている。これらの機器に用いる作動媒体には、水を
はじめプロパンやブタン等の炭化水素類，トリクロロフ
ルオロメタン（R11）や、クロロジフルオロメタン（R2
2）等のフロン類、又はアンモニア等が知られている。[Prior art] Air conditioning, refrigeration and refrigeration equipment (refrigeration cycle / heat pump cycle), waste heat recovery power generation (rankin cycle),
Heat exchange equipment (heat pipes) and the like have been commercialized or tested and developed. Working media used in these devices include water, hydrocarbons such as propane and butane, trichlorofluoromethane (R11), and chlorodifluoromethane (R2).
2) and the like, or ammonia and the like are known.
［発明の解決しようとする問題点］ フロン類は毒性が少なく、非可燃性で化学的にも安定
であり、標準沸点の異なる各種フロンが容易に入手でき
ることから、作動媒体としての評価研究が活発に行なわ
れている。本発明は、熱回収効率、特に、冷凍庫，冷蔵
庫，冷暖房機器，給湯機器あるいは廃熱回収を目的とし
たヒートポンプシステムの効率が高いフロン類、を新規
に提供するものである。[Problems to be Solved by the Invention] CFCs are less toxic, non-flammable, chemically stable, and various CFCs with different standard boiling points are easily available. Has been done to. The present invention newly provides CFCs having a high heat recovery efficiency, in particular, a freezer, a refrigerator, a cooling / heating equipment, a hot water supply equipment or a heat pump system for the purpose of recovering waste heat.
［問題点を解決するための手段］ 本発明はエタン（以下R170と略す）およびテトラフル
オロエタンを必須成分とすることを特徴とする作動媒体
混合物に関するものである。[Means for Solving Problems] The present invention relates to a working medium mixture containing ethane (hereinafter abbreviated as R170) and tetrafluoroethane as essential components.
本発明におけるテトラフルオロエタンには、1,1,2,2
−テトラフルオロエタン（R134）と、1,1,1,2−テトラ
フルオロエタン（R134a）の２種類の異性体が知られて
いるが、互いに物性が類似しているため、これらを単独
で用いてもよく、またこれらの混合物を用いてもよい。
以下の説明においては、R170とR134aを混合使用する例
を示す。In the present invention, tetrafluoroethane includes 1,1,2,2
-Two types of isomers of tetrafluoroethane (R134) and 1,1,1,2-tetrafluoroethane (R134a) are known, but they are used alone because they have similar physical properties. Or a mixture of these may be used.
In the following description, an example in which R170 and R134a are mixed and used is shown.
以下、本発明の作動媒体混合物（以下、単に作動媒体
ということがある。）を用いた冷凍サイクルシステムの
フローシートを示す第１図に従って本発明を詳細に説明
する。第１図の１は圧縮機、２は凝縮器、3,3′は負荷
流体用配管、４は減圧装置、５は蒸発器、6,6′は熱源
流体用配管を示す。Hereinafter, the present invention will be described in detail with reference to FIG. 1 showing a flow sheet of a refrigeration cycle system using the working medium mixture of the present invention (hereinafter, simply referred to as a working medium). In FIG. 1, 1 is a compressor, 2 is a condenser, 3 and 3'are load fluid pipes, 4 is a pressure reducing device, 5 is an evaporator, and 6 and 6'are heat source fluid pipes.
第１図に示す冷凍サイクルシステムにおいて作動媒体
は圧縮機１で圧縮された後、凝縮器２に導かれ、該凝縮
器２中で管３より導入される負荷流体により冷却されて
凝縮する。一方、負荷流体は凝縮器２中で逆に加熱され
管３′を経て負荷加熱に供される。つぎに凝縮した作動
媒体は減圧装置４により減圧された後、蒸発器５に導か
れ、該蒸発器５中で管６より導入され管６′から排出さ
れる熱源流体により加熱された後、再び圧縮機１に吸引
され上記のサイクルを繰り返す。一方、熱源流体は蒸発
器５中で逆に冷却され、管６′を経て冷却に供される。In the refrigeration cycle system shown in FIG. 1, the working medium is compressed by the compressor 1 and then guided to the condenser 2 where it is cooled and condensed by the load fluid introduced from the pipe 3. On the other hand, the load fluid is inversely heated in the condenser 2 and supplied to the load heating through the pipe 3 '. Next, the condensed working medium is decompressed by the decompression device 4, guided to the evaporator 5, heated in the evaporator 5 by the heat source fluid introduced from the pipe 6 and discharged from the pipe 6 ', and then again. The compressor 1 is sucked and the above cycle is repeated. On the other hand, the heat source fluid is inversely cooled in the evaporator 5 and is cooled by the pipe 6 '.
第２図及び第３図は第１図に示す冷凍サイクルシステ
ムにおける作動媒体混合物のサイクルを圧力−エンタル
ピ線図上に記入したものである。作動媒体の飽和蒸気を
断熱圧縮した場合、湿り状態になるものを第２図に、乾
き状態になるものを第３図に示す。FIGS. 2 and 3 show the cycle of the working medium mixture in the refrigeration cycle system shown in FIG. 1 plotted on the pressure-enthalpy diagram. When saturated vapor of the working medium is adiabatically compressed, a wet state is shown in FIG. 2 and a dry state is shown in FIG.
第１図の圧縮機による作動媒体の変化は第２図及び第
３図の符号８から９あるいは13から14の変化に、凝縮器
による作動媒体の変化は９→10→11→あるいは14→15→
16→17の変化に、減圧装置による作動媒体の変化は11か
ら12あるいは17から18の変化に、蒸発器による作動媒体
の変化は12から８あるいは18から13の変化にそれぞれ対
応する。The change of the working medium by the compressor in FIG. 1 is the change from 8 to 9 or 13 to 14 in FIGS. 2 and 3, and the change of the working medium by the condenser is 9 → 10 → 11 → or 14 → 15. →
The change of the working medium by the pressure reducing device corresponds to the change of 11 to 12 or 17 to 18, and the change of the working medium by the evaporator corresponds to the change of 12 to 8 or 18 to 13, respectively.
本発明の作動媒体混合物を用いた第１図の冷凍サイク
ルシステムの運転条件として蒸発器における作動媒体の
蒸発終り温度（符号７あるいは13の温度。以下、蒸発温
度という）と凝縮器における作動媒体の凝縮始めの温度
（符号９あるいは15の温度。以下、凝縮温度という）を
設定した。第１表から第２表に本発明の作動媒体混合物
を用いた上記の冷凍サイクルシステムにおける成績係数
および冷凍能力を比較例とともに記す。As the operating conditions of the refrigeration cycle system of FIG. 1 using the working medium mixture of the present invention, the evaporation end temperature of the working medium in the evaporator (the temperature of reference numeral 7 or 13; hereinafter referred to as evaporation temperature) and the working medium in the condenser are The temperature at the start of condensation (the temperature of code 9 or 15; hereinafter referred to as the condensation temperature) was set. Tables 1 to 2 show the coefficient of performance and the refrigerating capacity in the refrigeration cycle system using the working medium mixture of the present invention together with comparative examples.
表から理解されるようにR170とR134aとの混合モル比
が1:99〜40:60の範囲となる本発明の作動媒体混合物を
用いた冷凍サイクルの成績係数および冷凍能力はR134a
を単独で用いた場合に比べ改善されており、特に、R170
とR134aの混合モル比が20:80前後である本発明の作動媒
体混合物を用いた場合、大きく改善されており、きわめ
て有効であることがわかる。なお、R170の混合割合はあ
まり多過ぎると引火性の点で好ましくない。As can be understood from the table, the coefficient of performance and the refrigerating capacity of the refrigeration cycle using the working medium mixture of the present invention in which the mixing molar ratio of R170 and R134a is in the range of 1:99 to 40:60 is R134a.
Is improved compared to when used alone, especially R170
It can be seen that when the working medium mixture of the present invention in which the mixing molar ratio of R134a and R134a is around 20:80 is used, it is greatly improved and is extremely effective. In addition, if the mixing ratio of R170 is too large, it is not preferable in terms of flammability.
本発明の作動媒体混合物は低温〜中温、高温分野の空
調、冷凍および冷蔵を目的とし冷凍サイクルに応用する
場合に特に有効であるが、ランキンサイクルなどその他
各種の熱回収技術用の作動媒体として使用することもで
きる。本発明の作動媒体混合物は熱安定性が優れてお
り、通常の使用条件においては安定剤を必要としない
が、苛酷な使用条件のため熱安定性の向上が必要な場合
には、ジメチルホスファイト、ジイソプロピルホスファ
イト、ジフェニルホスファイト等のホスファイト系化合
物、又はチオホスファイト系化合物、あるいはトリフェ
ニルホスフィンサルファイド、トリメチルホスフィンサ
ルファイド等のホスフィンサルファイド系化合物、その
他グリシジルエーテル類等の安定剤を作動媒体100重量
部に対し、１重量部前後の少量添加すればよい。The working medium mixture of the present invention is particularly effective when applied to a refrigeration cycle for the purpose of air conditioning, refrigeration and refrigeration in low to medium temperature and high temperature fields, but is used as a working medium for various other heat recovery technologies such as Rankine cycle. You can also do it. The working medium mixture of the present invention has excellent thermal stability and does not require a stabilizer under normal use conditions, but when it is necessary to improve heat stability due to severe use conditions, dimethyl phosphite is used. Phosphite compounds such as diisopropyl phosphite and diphenyl phosphite, or thiophosphite compounds, or phosphine sulfide compounds such as triphenylphosphine sulfide and trimethylphosphine sulfide, and other stabilizers such as glycidyl ethers as a working medium 100 It may be added in a small amount of about 1 part by weight with respect to parts by weight.
［発明の効果］ 本発明の作動媒体混合物は、特に冷凍サイクル効率す
なわち冷凍、加熱効率に優れ、混合前の単独成分に比
し、大幅な改善が認められる。 [Effects of the Invention] The working medium mixture of the present invention is particularly excellent in refrigeration cycle efficiency, that is, refrigeration and heating efficiency, and is significantly improved as compared with a single component before mixing.
【図面の簡単な説明】 第１図は本発明の１実施例を説明するための冷凍サイク
ルのフローシート、第２図および第３図はR170/R134a混
合系を作動媒体として用いたサイクルを圧力−エンタル
ピ線図に記入した図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flow chart of a refrigeration cycle for explaining an embodiment of the present invention, and FIGS. 2 and 3 are pressure charts of a cycle using a R170 / R134a mixed system as a working medium. -Drawing on the enthalpy diagram.
Claims (2)
とすることを特徴とする作動媒体混合物。1. A working medium mixture comprising ethane and tetrafluoroethane as essential components.
比が1:99〜40:60である特許請求の範囲第１項記載の作
動媒体混合物。2. The working medium mixture according to claim 1, wherein the mixing molar ratio of ethane and tetrafluoroethane is 1:99 to 40:60.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62296174A JP2536560B2 (en) | 1987-11-26 | 1987-11-26 | Working medium mixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62296174A JP2536560B2 (en) | 1987-11-26 | 1987-11-26 | Working medium mixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01139671A JPH01139671A (en) | 1989-06-01 |
| JP2536560B2 true JP2536560B2 (en) | 1996-09-18 |
Family
ID=17830119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62296174A Expired - Lifetime JP2536560B2 (en) | 1987-11-26 | 1987-11-26 | Working medium mixture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2536560B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2596776B2 (en) * | 1988-02-04 | 1997-04-02 | 株式会社荏原製作所 | heat pump |
| JP4645701B2 (en) | 2008-08-27 | 2011-03-09 | ブラザー工業株式会社 | Image reading apparatus and image reading method |
-
1987
- 1987-11-26 JP JP62296174A patent/JP2536560B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| ＲｅｓｅａｒｃｈＤｉｓｃｌｏｓｕｒｅ，［１５５］（１９７７−３．）Ｐ．４ |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01139671A (en) | 1989-06-01 |
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