JPH0655942B2 - Working fluid - Google Patents
Working fluidInfo
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- JPH0655942B2 JPH0655942B2 JP1311154A JP31115489A JPH0655942B2 JP H0655942 B2 JPH0655942 B2 JP H0655942B2 JP 1311154 A JP1311154 A JP 1311154A JP 31115489 A JP31115489 A JP 31115489A JP H0655942 B2 JPH0655942 B2 JP H0655942B2
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Description
【発明の詳細な説明】 産業上の利用分野 本発明は、エアコン・冷凍機等のヒートポンプ装置に使
用される作動流体に関する。TECHNICAL FIELD The present invention relates to a working fluid used in a heat pump device such as an air conditioner and a refrigerator.
従来の技術 従来、エアコン・冷凍機等のヒートポンプ装置において
は、作動流体としてフロン類（以下Ｒ○○またはＲ○○
○と記す）と呼ばれるハロゲン化炭化水素が知られてお
り、利用温度としては凝縮温度および／または蒸発温度
が略０〜略５０℃の範囲において通常使用される。中で
もクロロジフルオロメタン（ＣＨＣｌＦ2、Ｒ２２）は
家庭用エアコン、ビル用エアコンや大型冷凍機等の作動
流体として幅広く用いられている。2. Description of the Related Art Conventionally, in heat pump devices such as air conditioners and refrigerators, CFCs (hereinafter R ○○ or R ○○) are used as working fluids.
Halogenated hydrocarbons referred to as ◯) are known, and they are usually used as utilization temperatures in the range of condensation temperature and / or evaporation temperature of about 0 to about 50 ° C. Among them, chlorodifluoromethane (CHClF 2 , R22) is widely used as a working fluid for home air conditioners, building air conditioners, large refrigerators and the like.
発明が解決しようとする課題 しかしながら、近年フロンによる成層圏オゾン層破壊が
地球規模の環境問題となっており、成層圏オゾン破壊能
力が大であるフロン類（以下、特定フロンと記す）につ
いては、すでに国際条約によって使用量及び生産量の規
制がなされ、さらに将来的には特定フロンの使用・生産
を廃止しようという動きがある。さて、Ｒ２２はオゾン
破壊係数（トリクロロフルオロメタン（ＣＣｌ3Ｆ）の
成層圏オゾン破壊能力を１としたときの成層圏オゾン破
壊能力、以下ＯＤＰと記す）が０．０５と微少であり、
特定フロンではないものの将来的に使用量の増大が予想
され、冷凍・空調機器が広く普及した現在、Ｒ２２の使
用量及び生産量の増大が人類の生活環境に与える影響も
大きくなるものと予想されている。従って、成層圏オゾ
ン破壊能力が小であるものの、若干の破壊能力があると
されるＲ２２の代替となる作動流体の早期開発も強く要
望されている。Problems to be Solved by the Invention However, in recent years, the depletion of the stratospheric ozone layer by CFCs has become a global environmental problem, and the CFCs that have a large ozone depletion ability in the stratosphere (hereinafter referred to as “specific CFCs”) have already been The treaty regulates the amount used and the amount produced, and there is a movement to abolish the use and production of specified CFCs in the future. By the way, R22 has a very small ozone depletion coefficient (stratospheric ozone depletion capacity when the stratospheric ozone depletion capacity of trichlorofluoromethane (CCl 3 F) is 1, hereinafter referred to as ODP), which is as small as 0.05,
Although it is not a specified CFC, its usage is expected to increase in the future, and with the widespread use of refrigeration and air-conditioning equipment, it is expected that the increase in usage and production of R22 will have a large impact on the human living environment. ing. Therefore, there is a strong demand for early development of a working fluid that is a substitute for R22, which has a small ozone depletion ability in the stratosphere but is said to have some depletion ability.
本発明は、上述の問題に鑑みて試されたもので、成層圏
オゾン層に及ぼす影響がほとんどない、Ｒ２２の代替と
なる作動流体を提供するものである。The present invention has been tried in view of the above problems, and provides a working fluid that is an alternative to R22 and has almost no effect on the stratospheric ozone layer.
課題を解決するための手段 本発明は上述の課題を解決するため、少なくとも、ジフ
ルオロメタン（ＣＨ2Ｆ2）とペンタフルオロエタン（Ｃ
2ＨＦ5）とテトラフルオロエタン（Ｃ2Ｈ2Ｆ4）の三種
のフロン類を含み、ジフルオロエタン０〜略６０重量
％、ペンタフルオロエタン０〜略８５重量％、テトラフ
ルオロエタン略１５〜略８０重量％の組成範囲であこと
を特徴とするものであり、特に、ジフルオロメタン０〜
略５０重量％、ペンタフルオロエタン０〜略８０重量
％、テトラフルオロエタン略２０〜略７５重量％の組成
範囲が望ましいものである。Means for Solving the Problems To solve the above problems, the present invention provides at least difluoromethane (CH 2 F 2 ) and pentafluoroethane (C
2 HF 5 ) and tetrafluoroethane (C 2 H 2 F 4 ), three types of CFCs are included, and difluoroethane is 0 to about 60% by weight, pentafluoroethane is 0 to about 85% by weight, and tetrafluoroethane is about 15 to about 80. It is characterized in that the composition range is wt%, and particularly, difluoromethane 0 to
A composition range of about 50% by weight, pentafluoroethane 0 to about 80% by weight, and tetrafluoroethane about 20 to about 75% by weight is desirable.
作用 本発明は、上述の組合せによって、作動流体を、オゾン
破壊能力のほとんどない、分子構造中に塩素を含まない
フロン類であるジフルオロメタン（ＯＤＰ＝０）、ペン
タフルオロエタン（ＯＤＰ＝０）およびテトラフルオロ
エタ（ＯＤＰ＝０）の混合物となすことにより、成層圏
オゾン層に及ぼす影響をＲ２２よりもさらに小さく、ほ
とんどなくすることを可能とするものである。又、本発
明は上述の組成範囲とすることによって、エアコン・冷
凍機等のヒートポンプ装置の利用温度である略０〜略５
０℃においてＲ２２と同程度の蒸気圧を有し、Ｒ２２の
代替として現行機器で使用可能な作動流体を提供するこ
とを可能とするものである。従って上述の組合せおよび
組成範囲におけるＯＤＰも０と予想され、Ｒ２２の代替
として極めて有望な作動流体となるものである。またか
かる混合物は非共沸混合物となり、凝縮過程および蒸発
過程において温度勾配をもつため、熱源流体との温度差
を近接させたロレンツサイクルを構成することにより、
Ｒ２２よりも高い成績係数を期待できるものである。Effect The present invention uses the above-mentioned combination to convert the working fluid into difluoromethane (ODP = 0), pentafluoroethane (ODP = 0), and fluorocarbons that have almost no ozone depleting ability and are fluorocarbons having no chlorine in the molecular structure. By using a mixture of tetrafluoroethane (ODP = 0), the influence on the stratospheric ozone layer is smaller than that of R22, and it is possible to almost eliminate it. Further, according to the present invention, by setting the composition range as described above, the use temperature of a heat pump device such as an air conditioner or a refrigerator is about 0 to about 5.
It has a vapor pressure similar to that of R22 at 0 ° C., and makes it possible to provide a working fluid that can be used in existing equipment as an alternative to R22. Therefore, the ODP in the above-mentioned combination and composition range is also expected to be 0, which is a very promising working fluid as an alternative to R22. Further, since such a mixture becomes a non-azeotropic mixture and has a temperature gradient in the condensation process and the evaporation process, by configuring a Lorenz cycle in which the temperature difference with the heat source fluid is close,
A higher coefficient of performance than R22 can be expected.
また一般に、成層圏オゾン破壊能力があるフロン類は、
そのＯＤＰの値の大きさにつれて地球温暖化の効果も大
きい傾向があるが、本発明による作動流体はＯＤＰが０
であるフロン類のみの三種以上から成る混合物によって
構成されているため、地球温暖化の効果はＲ２２と同程
度あるいはＲ２２未満と推定され、最近世界的問題とな
っている地球温暖化への寄与を小とすることをも可能と
するものである。In general, CFCs with ozone depletion potential in the stratosphere are
Although the effect of global warming tends to increase as the value of the ODP increases, the working fluid according to the present invention has an ODP of 0.
It is estimated that the effect of global warming is the same as R22 or less than R22 because it is composed of a mixture of three or more kinds of CFCs. It is also possible to make it small.
実施例 以下、本発明による作動流体の実施例について、図を用
いて説明する。Example Hereinafter, an example of the working fluid according to the present invention will be described with reference to the drawings.
第１図は、ジフルオロメタン（Ｒ３２）、ペンタフルオ
ロエタン（Ｒ１２５）、１，１，１，２−テトラフルオ
ロエタン（Ｒ１３４ａ）の三種のフロン類の混合物によ
って構成される作動流体の、一定温度・一定圧力におけ
る平衡状態を三角座標を用いて示したものである。本三
角座標においては、三角形の各頂点に、上側頂点を基点
として反時計回りに沸点の低い順に単一物質を配置して
おり、座標平面上にある点における各成分の組成比（重
量比）は、点と三角形の各辺との距離の比で表される。
またこのとき、点と三角形の辺との距離は、辺に相対す
る側にある三角座標の頂点に記された物質の組成比に対
応する。第１図において１は、温度０℃・圧力４．０４
４ｋｇ／ｃｍ2Ｇにおける混合物の気液平衡線であり、
この温度・圧力はＲ２２の飽和状態に相当する。気液平
衡線（Ｒ２２ ０℃相当）１の上側の線は飽和気相線、
気液平衡線（Ｒ２２ ０℃相当）１の下側の線は飽和液
相線を表わし、この両線で挟まれた範囲においては気液
平衡状態となる。また２は、温度５０℃・圧力１８．７
８２ｋｇ／ｃｍ2Ｇにおける混合物の気液平衡線であ
り、この温度・圧力もＲ２２の飽和状態に相当する。図
からわかるように、Ｒ３２、Ｒ１２５及びＲ１３４ａが
それぞれ０〜略４５重量％、０〜略７５重量％、略２５
〜略８０重量％となるような組成範囲は、略０〜略５０
℃の利用温度においてＲ２２とほぼ同等の蒸気圧を有す
るため望ましい。さらに、Ｒ３２、Ｒ１２５及びＲ１３
４ａがそれぞれ０〜略３５重量％、０〜略６５重量％、
略３５〜略７５重量％となるような組成範囲は、０℃と
５０℃の間のすべての利用温度においてＲ２２とほぼ同
等の蒸気圧を有するため特に望ましい。FIG. 1 shows a constant temperature of a working fluid composed of a mixture of three fluorocarbons of difluoromethane (R32), pentafluoroethane (R125) and 1,1,1,2-tetrafluoroethane (R134a). The equilibrium state at a constant pressure is shown using triangular coordinates. In this triangular coordinate, a single substance is arranged at each vertex of the triangle counterclockwise from the upper vertex in the ascending order of boiling point, and the composition ratio (weight ratio) of each component at the point on the coordinate plane. Is represented by the ratio of the distance between the point and each side of the triangle.
At this time, the distance between the point and the side of the triangle corresponds to the composition ratio of the substance described at the apex of the triangular coordinate on the side opposite to the side. In FIG. 1, 1 indicates a temperature of 0 ° C. and a pressure of 4.04.
Is a vapor-liquid equilibrium line of the mixture at 4 kg / cm 2 G,
This temperature and pressure correspond to the saturated state of R22. The upper line of the vapor-liquid equilibrium line (corresponding to R220 0 ° C) 1 is the saturated vapor phase line,
The lower line of the gas-liquid equilibrium line (corresponding to R220 ° C.) 1 represents the saturated liquidus line, and the gas-liquid equilibrium state is established in the range sandwiched by these lines. Also, 2 is a temperature of 50 ° C and a pressure of 18.7.
It is a vapor-liquid equilibrium line of the mixture at 82 kg / cm 2 G, and this temperature / pressure also corresponds to the saturated state of R22. As can be seen from the figure, R32, R125, and R134a are 0 to approximately 45% by weight, 0 to approximately 75% by weight, and approximately 25%, respectively.
To about 80% by weight, the composition range is about 0 to about 50.
It is desirable because it has a vapor pressure almost equal to that of R22 at a use temperature of ° C. In addition, R32, R125 and R13
4a is 0 to about 35% by weight, 0 to about 65% by weight,
A composition range of about 35 to about 75% by weight is particularly desirable because it has a vapor pressure almost equal to that of R22 at all use temperatures between 0 ° C and 50 ° C.
第１図中の点Ａ1〜点Ｆ1における作動流体の組成を第１
表に示す。点Ａ1〜点Ｃ1は気液平衡線（Ｒ２２ ５０℃
相当）２の飽和気相線上にあると共に、気液平衡線（Ｒ
２２ ０℃相当）１の飽和気相線及び気液平衡線（Ｒ２
２ ０℃相当）１の飽和液相線の両線で挟まれた範囲に
あることから、温度０℃・圧力４．０４４ｋｇ／ｃｍ2
Ｇ（Ｒ２２の飽和状態に相当）においては気液平衡状態
となる。また、点Ｄ1〜点Ｆ1は気液平衡線（Ｒ２２ ０
℃相当）１の飽和液相線上にあると共に、気液平衡線
（Ｒ２２ ５０℃相当）２の飽和気相線及び気液平衡線
（Ｒ２２ ５０℃相当）２の飽和液相線の両線で挟まれ
た範囲にあることから、温度 ５０℃・圧力１８．７８２ｋｇ／ｃｍ2Ｇ（Ｒ２２の飽
和状態に相当）においては気液平衡状態となる。従っ
て、第１表に示された組成を有する作動流体は、０℃・
５０℃におけるＲ２２の飽和蒸気圧の条件下で飽和状態
あるいは気液平衡状態を実現し、略０〜略５０℃の利用
温度において、同温度におけるＲ２２の飽和蒸気圧で操
作することにより、Ｒ２２とほぼ等しい凝縮温度・蒸発
温度を得ることが可能となるものである。The composition of the working fluid at points A 1 to F 1 in FIG.
Shown in the table. Points A 1 to C 1 are gas-liquid equilibrium lines (R22 50 ° C.
Equivalent) 2 on the saturated vapor phase line and the vapor-liquid equilibrium line (R
Saturated vapor phase line and vapor-liquid equilibrium line (R2
The temperature is 0 ° C and the pressure is 4.044 kg / cm 2 because it is in the range between both saturated liquidus lines of 20 ° C).
At G (corresponding to the saturated state of R22), a gas-liquid equilibrium state is established. Further, points D 1 to F 1 are gas-liquid equilibrium lines (R220
(Equivalent to ℃) on the saturated liquidus line of 1, and the saturated liquidus line of gas-liquid equilibrium line (R22 50 ° C) 2 and the saturated liquidus line of gas-liquid equilibrium line (R22 50 ° C) 2 Since it is in the sandwiched range, the temperature At 50 ° C. and a pressure of 18.782 kg / cm 2 G (corresponding to the saturated state of R22), a gas-liquid equilibrium state is reached. Therefore, the working fluid having the composition shown in Table 1 is 0 ° C.
By realizing a saturated state or a vapor-liquid equilibrium state under the condition of the saturated vapor pressure of R22 at 50 ° C. and operating at the saturated vapor pressure of R22 at the same temperature at a use temperature of approximately 0 to approximately 50 ° C., R22 and It is possible to obtain substantially the same condensation temperature and evaporation temperature.
ここでは、気液平衡線（Ｒ２２ ０℃相当）１あるいは
気液平衡線（Ｒ２２ ５０℃相当）２上の点についての
み説明したが、点Ａ1〜点Ｆ1の内側にある点、すなわ
ち、温度０℃・圧力４．０４４ｋｇ／ｃｍ2Ｇ及び温度
５０℃・圧力１８．７８２ｋｇ／ｃｍ2Ｇ（両者ともＲ
２２の飽和状態に相当）において気液平衡状態となる組
成を有する作動流体についても同様に操作することによ
り、略０〜略５０℃の利用温度においてＲ２２とほぼ等
しい凝縮温度・蒸発温度を得ることが可能となるもので
ある。Here, only the points on the gas-liquid equilibrium line (corresponding to R22 0 ° C.) 1 or the gas-liquid equilibrium line (R22 at 50 ° C.) 2 are described, but points inside the points A 1 to F 1 , that is, Temperature 0 ° C, pressure 4.044 kg / cm 2 G and temperature 50 ° C, pressure 18.782 kg / cm 2 G (both R
22) (corresponding to the saturated state of 22), a working fluid having a composition in a gas-liquid equilibrium state is similarly operated to obtain a condensation temperature / evaporation temperature almost equal to R22 at a use temperature of about 0 to about 50 ° C. Is possible.
第２図は、Ｒ３２、Ｒ１２５、１，１，２，２−テトラ
フルオロエタン（Ｒ１３４）の三種のフロン類の混合物
によって構成される作動流体の、一定温度・一定圧力に
おける平衡状態を三角座標を用いて示したものである。
第２図において３は、温度０℃・圧力４．０４４ｋｇ／
ｃｍ2Ｇにおける混合物の気液平衡線であり、また４
は、温度５０℃・圧力１８．７８２ｋｇ／ｃｍ2Ｇにお
ける混合物の気液平衡線である。この場合には、Ｒ３
２、Ｒ１２５及びＲ１３４がそれぞれ０〜略６０重量
％、０〜略８５重量％、略１５〜略７０重量％となるよ
うな組成範囲が、Ｒ２２とほぼ同等の蒸気圧を有するた
め望ましく、Ｒ３２、Ｒ１２５及びＲ１３４がそれぞれ
０〜略５０重量％、０〜略８０重量％、略２０〜略６５
重量％となるような組成範囲が、特に望ましい。FIG. 2 shows the equilibrium state of a working fluid composed of a mixture of three fluorocarbons of R32, R125, 1,1,2,2-tetrafluoroethane (R134) at a constant temperature and a constant pressure in triangular coordinates. It is shown by using.
In Fig. 2, 3 indicates temperature 0 ° C and pressure 4.044 kg /
is the vapor-liquid equilibrium line of the mixture at cm 2 G and is 4
Is a vapor-liquid equilibrium line of the mixture at a temperature of 50 ° C. and a pressure of 18.782 kg / cm 2 G. In this case, R3
2, composition ranges such that R125 and R134 are 0 to about 60% by weight, 0 to about 85% by weight, and about 15 to about 70% by weight, respectively, are desirable because they have a vapor pressure almost equal to that of R22. R125 and R134 are 0 to about 50% by weight, 0 to about 80% by weight, and about 20 to about 65%, respectively.
A composition range such as weight% is particularly desirable.
第２図中の点Ａ2〜点Ｆ2における作動流体の組成を第２
表に示す。点Ａ2〜点Ｃ2は気液平衡線（Ｒ２２ ５０℃
相当）４の飽和気相線上に、点Ｄ2〜点Ｆ2は気液平衡線
（Ｒ２２ ５０℃相当）４ の飽和液相線上にあり、共に気液平衡線（Ｒ２２ ０℃
相当）３の飽和気相線及び気液平衡線（Ｒ２２ ０℃相
当）３の飽和液相線の両線で挟まれた範囲にあることか
ら、温度０℃・圧力４．０４４ｋｇ／ｃｍ2Ｇ（Ｒ２２
の飽和状態に相当）においては気液平衡状態となる。従
って、第２表に示された組成を有する作動流体は、０℃
・５０℃におけるＲ２２の飽和蒸気圧の条件下で飽和状
態あるいは気液平衡状態を実現し、略０〜略５０℃の利
用温度において、同温度におけるＲ２２の飽和蒸気圧で
操作することにより、Ｒ２２とほぼ等しい凝縮温度・蒸
発温度を得ることが可能となるものである。The composition of the working fluid at points A 2 to F 2 in FIG.
Shown in the table. Points A 2 to C 2 are gas-liquid equilibrium lines (R22 50 ° C.
On the saturated vapor phase line 4), points D 2 to F 2 are gas-liquid equilibrium lines (R22 50 ° C equivalent) 4 On the saturated liquidus line of the
(Equivalent) 3 saturated vapor phase line and vapor-liquid equilibrium line (equivalent to R22 0 ° C) 3 saturated liquidus line, the temperature is 0 ° C and the pressure is 4.044 kg / cm 2 G. (R22
(Corresponding to the saturated state of), it becomes a vapor-liquid equilibrium state. Therefore, the working fluid having the composition shown in Table 2 is 0 ° C.
A saturated state or a vapor-liquid equilibrium state is realized under the condition of the saturated vapor pressure of R22 at 50 ° C., and the saturated vapor pressure of R22 at the same temperature is used at the operating temperature of approximately 0 to approximately 50 ° C. It is possible to obtain a condensation temperature and an evaporation temperature almost equal to.
ここでは、気液平衡線（Ｒ２２ ５０℃相当）４上の点
についてのみ説明したが、点Ａ2〜点Ｆ2の内側にある
点、すなわち、温度０℃・圧力４．０４４ｋｇ／ｃｍ2
Ｇ及び温度５０℃・圧力１８．７８２ｋｇ／ｃｍ2Ｇ
（両者ともＲ２２の飽和状態に相当）において気液平衡
状態となる組成を有する作動流体についても同様に操作
することにより、略０〜略５０℃の利用温度においてＲ
２２とほぼ等しい凝縮温度・蒸発温度を得ることが可能
となるものである。Although only the point on the gas-liquid equilibrium line (R22 50 ° C equivalent) 4 is described here, a point inside the points A 2 to F 2 , that is, a temperature of 0 ° C and a pressure of 4.044 kg / cm 2.
G and temperature 50 ° C, pressure 18.782 kg / cm 2 G
By similarly operating a working fluid having a composition in a gas-liquid equilibrium state (both correspond to the saturated state of R22), R at a use temperature of approximately 0 to approximately 50 ° C.
It is possible to obtain a condensation temperature / evaporation temperature almost equal to 22.
以上の実施例においては作動流体は三種のフロン類の混
合物によって構成されているが、構造異性体を含めて四
種以上のフロンの混合物によって作動流体を構成するこ
とも勿論可能であり、この場合、ジフルオロメタン０〜
略６０重量％、ペンタフルオロエタン０〜略８５重量
％、テトラフルオロエタン略１５〜略８０重量％となる
ような組成範囲は、略０〜略５０℃の利用温度において
Ｒ２２とほぼ同等の蒸気圧を有するため望ましい。さら
に、ジフルオロメタン０〜略５０重量％、ペンタフルオ
ロエタン０〜略８０重量％、テトラフルオロエタン略２
０〜略７５重量％となるような組成範囲は、０℃と５０
℃の間のすべての利用温度においてＲ２２とほぼ同等の
蒸気圧を有するため特に望ましい。特に上述の組合せお
よび組成範囲におけるＯＤＰも０と予想され、Ｒ２２の
代替として極めて有望な作動流体となるものである。ま
たかかる混合物は非共沸混合物となり、凝縮過程および
蒸発過程において温度勾配をもつため、熱源流体との温
度差を近接させたロレンツサイクルを構成することによ
り、Ｒ２２よりも高い成績係数を期待できるものであ
る。In the above examples, the working fluid is composed of a mixture of three types of freons, but it is of course possible to form the working fluid by a mixture of four or more types of freon including structural isomers. , Difluoromethane 0
The composition range of about 60% by weight, pentafluoroethane 0 to about 85% by weight, and tetrafluoroethane about 15 to about 80% by weight has a vapor pressure almost equal to that of R22 at a use temperature of about 0 to about 50 ° C. Desirable because it has Furthermore, difluoromethane 0 to approximately 50% by weight, pentafluoroethane 0 to approximately 80% by weight, tetrafluoroethane approximately 2
The composition range of 0 to about 75% by weight is 0 ° C and 50%.
It is particularly desirable because it has a vapor pressure almost equal to R22 at all utilization temperatures between ° C. In particular, the ODP in the above-mentioned combination and composition range is also expected to be 0, which is a very promising working fluid as a substitute for R22. Further, since such a mixture becomes a non-azeotropic mixture and has a temperature gradient in the condensation process and the evaporation process, a coefficient of performance higher than that of R22 can be expected by constructing a Lorentz cycle in which the temperature difference with the heat source fluid is close. Is.
発明の効果 以上の説明から明らかなように、本発明は、作動流体
を、分子構造中に塩素を含まないフロン類のみの三種以
上から成る混合物となし、その組成範囲を特定したこと
により、 （１）成層圏オゾン層に及ぼす影響をＲ２２よりもさら
に小さく、ほとんどなしとする作動流体の選択の幅を拡
大することが可能である。EFFECTS OF THE INVENTION As is clear from the above description, the present invention provides a working fluid as a mixture of three or more kinds of only CFCs containing no chlorine in the molecular structure, and by specifying the composition range thereof, 1) The influence on the stratospheric ozone layer is smaller than that of R22, and it is possible to expand the range of selection of the working fluid with almost no effect.
（２）機器の利用温度においてＲ２２と同程度の蒸気圧
を有し、Ｒ２２の代替として現行機器で使用可能であ
る。(2) It has a vapor pressure similar to that of R22 at the operating temperature of the equipment, and can be used in existing equipment as an alternative to R22.
（３）非共沸混合物の温度勾配の性質を利用して、Ｒ２
２よりも高い成績係数を期待できる等の効果を有するも
のである。(3) Utilizing the property of the temperature gradient of the non-azeotropic mixture, R2
It has the effect of expecting a coefficient of performance higher than 2.
第１図〜第２図は、三種のフロン類の混合物によって構
成される作動流体の、一定温度・一定圧力における平衡
状態を三角座標を用いて示した図である。 １、３……気液平衡線（Ｒ２２ ０℃相当）、 ２、４……気液平衡線（Ｒ２２ ５０℃相当）。1 and 2 are diagrams showing, using triangular coordinates, an equilibrium state of a working fluid composed of a mixture of three types of freons at a constant temperature and a constant pressure. 1, 3 ... gas-liquid equilibrium line (R22 equivalent to 0 ° C), 2, 4 ... gas-liquid equilibrium line (R22 equivalent to 50 ° C).
Claims (2)
フルオロエタン８５重量％以下、テトラフルオロエタン
１５〜８０重量％以下の少なくとも三種のフロン類を含
む作動流体。1. A working fluid containing at least three types of CFCs in an amount of 60% by weight or less of difluoromethane, 85% by weight or less of pentafluoroethane, and 15 to 80% by weight or less of tetrafluoroethane.
フルオロエタン８０重量％以下、テトラフルオロエタン
２０〜７５重量％以下であることを特徴とする作動流
体。2. A working fluid comprising difluoromethane of 50% by weight or less, pentafluoroethane of 80% by weight or less, and tetrafluoroethane of 20 to 75% by weight or less.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1311154A JPH0655942B2 (en) | 1989-11-30 | 1989-11-30 | Working fluid |
| DE69011632T DE69011632T2 (en) | 1989-11-30 | 1990-11-27 | Work equipment. |
| SG1995903605A SG28336G (en) | 1989-11-30 | 1990-11-27 | Working fluid |
| EP90122652A EP0430169B1 (en) | 1989-11-30 | 1990-11-27 | Working fluid |
| KR1019900019596A KR930010516B1 (en) | 1989-11-30 | 1990-11-30 | Working fluid |
| US07/832,649 US5370811A (en) | 1989-11-30 | 1992-02-11 | Working fluid containing tetrafluoroethane |
| US08/305,320 US5438849A (en) | 1989-11-30 | 1994-09-15 | Air conditioner and heat pump with tetra fluoroethane-containing working fluid |
| HK42495A HK42495A (en) | 1989-11-30 | 1995-03-23 | Working fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1311154A JPH0655942B2 (en) | 1989-11-30 | 1989-11-30 | Working fluid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03170585A JPH03170585A (en) | 1991-07-24 |
| JPH0655942B2 true JPH0655942B2 (en) | 1994-07-27 |
Family
ID=18013755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1311154A Expired - Lifetime JPH0655942B2 (en) | 1989-11-30 | 1989-11-30 | Working fluid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0655942B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998030651A1 (en) * | 1997-01-13 | 1998-07-16 | Daikin Industries, Ltd. | Method for filling mixed refrigerant |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1029625C (en) * | 1990-12-17 | 1995-08-30 | 纳幕尔杜邦公司 | Constant boiling compositions of fluorinated hydrocarbons |
| US5290466A (en) * | 1991-10-31 | 1994-03-01 | E. I. Du Pont De Nemours And Company | Compositions of difluoromethane and tetrafluoroethane |
| TW322527B (en) | 1994-09-16 | 1997-12-11 | Sanyo Electric Co | |
| JPH10259898A (en) * | 1997-01-14 | 1998-09-29 | Daikin Ind Ltd | Method for transferring and filling liquefied gas |
| KR100340275B1 (en) | 1999-11-02 | 2002-06-12 | 박호군 | Refrigerant Mixtures Containing Difluoromethane (HFC-32), Pentafluoroethane (HFC-125) and 1,1,1,2-tetrafluoroethane (HFC-134a) |
| KR100405189B1 (en) | 2001-02-16 | 2003-11-12 | 한국과학기술연구원 | A composition of Refrigerant Mixtures |
| US6841087B2 (en) | 2002-04-19 | 2005-01-11 | Korea Institute Of Science And Technology | Refrigerant composition comprising difluoromethane, 1,1,1-trifluoroethane and 1,1,1,2-tetrafluoroethane |
| US6776922B2 (en) | 2002-07-24 | 2004-08-17 | Korea Institute Of Science And Technology | Refrigerant composition comprising difluoromethane, 1,1,1-trifluoroethane and 1,1-difluoroethane |
| US6800216B2 (en) | 2002-07-24 | 2004-10-05 | Korea Institute Of Science And Technology | Refrigerant composition for replacing chlorodifluoromethane |
| US8444873B2 (en) | 2009-06-12 | 2013-05-21 | Solvay Fluor Gmbh | Refrigerant composition |
| JP2011084652A (en) * | 2009-10-15 | 2011-04-28 | Honeywell Internatl Inc | Refrigerant composition and use thereof in low-temperature refrigeration system |
| WO2015083834A1 (en) * | 2013-12-06 | 2015-06-11 | ダイキン工業株式会社 | Composition including difluoromethane (hfc-32), pentafluoroethane (hfc-125), and 1,1,1,2-tetrafluoroethane (hfc-134a) |
| JP6841066B2 (en) * | 2017-02-03 | 2021-03-10 | ダイキン工業株式会社 | A method of using a mixture of fluorinated hydrocarbons as a refrigerant, and a refrigerating device using the mixture as a refrigerant. |
| JP6504298B2 (en) * | 2017-04-21 | 2019-04-24 | ダイキン工業株式会社 | Composition containing refrigerant and application thereof |
| JP2017197767A (en) * | 2017-06-14 | 2017-11-02 | ハネウェル・インターナショナル・インコーポレーテッドＨｏｎｅｙｗｅｌｌ Ｉｎｔｅｒｎａｔｉｏｎａｌ Ｉｎｃ． | Refrigerant composition and use thereof in low-temperature refrigeration system |
-
1989
- 1989-11-30 JP JP1311154A patent/JPH0655942B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998030651A1 (en) * | 1997-01-13 | 1998-07-16 | Daikin Industries, Ltd. | Method for filling mixed refrigerant |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03170585A (en) | 1991-07-24 |
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