JP2979704B2 - Low temperature fluid cool storage material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION
A low-temperature fluidity cold storage material that enables cold storage in a low-temperature region of about 0 ° C. is capable of storing latent heat and has fluidity,
In particular, it is suitable for a wide range of use of the cold heat of LNG.

[0002]

2. Description of the Related Art One of energy savings is effective use of heat, and it is necessary to effectively use not only high-temperature heat energy but also low-temperature cold (cold heat).

One of the colds is LNG (liquefied natural gas).
And is liquefied at about -162 ° C for mass transport and storage of natural gas. And this LNG
If used as city gas or industrial fuel gas,
It is vaporized using seawater or heated water or, in the case of a small amount, air, and returned to natural gas at a temperature of 0 ° C. or higher.
Therefore, when LNG stored in a liquid state is vaporized and used as a gas, the temperature is reduced from about −162 ° C. to −0.
The cold heat based on the temperature difference up to ° C is discarded in seawater or the like.

The energy for obtaining such a low temperature requires more energy as the temperature of the obtained cold energy is lower. Therefore, it is considered that the cold energy of LNG is effectively used. It is used for air separation in manufacturing, waste treatment such as destruction of waste tires at low temperatures, refrigeration and frozen storage of foods, and cryogenic power generation. However, with these uses of cold energy, fluctuations in LNG day and night demand (peak,
Off-peak), LN that can be used constantly and stably
The amount of G is limited to a part of the total demand, and at present, most of the cold heat of LNG is discarded in seawater or the like.
Therefore, it is conceivable that cold energy discarded in seawater or the like is stored and used for the effective use of the cold energy of LNG, but the current cold storage is performed by using inexpensive nighttime electric power in cooling of a building or the like. There are only those that operate a refrigerator, make cold water or ice and store it in a cold storage tank, and use it for cooling in the daytime, or store and transport ice temperature of fresh fish and the like. In these cold storages, a mixture of water and ice or salts and water is used as a cold storage material, and the temperature is about 7 ° C. to about 0 ° C. for cooling. In addition, it is known to use a latent heat of solidification / melting due to hydrate formation of salts such as calcium chloride, sodium chloride, sodium nitrate and the like for the special cold storage. It is in the range of about -40 ° C to about 0 ° C. Temperatures below this have never been put to practical use, but it is theoretically conceivable to store cold using the latent heat of cooling, solidifying and melting chemical substances.
It is conceivable to use hydrocarbon-based, alcohol-based, ethers, acid esters, amines, and other organic and inorganic substances which solid-crystallize at a temperature of 0 ° C. or lower to around −170 ° C. as a regenerator material having a temperature of not higher than 0 ° C. . The melting point of a chemical substance that cools and solidifies and melts in such a low temperature range is, for example, the melting point of normal-hexane is -93.35 ° C, the melting point of methanol is -97.68 ° C, and the melting point of acetic anhydride is -73.05.
The literature describes that the melting point of triethylamine is -114.70 ° C, and the melting point of carbon disulfide is -112.05 ° C.

[0005]

However, most of the hydrates of these chemical substances and salts, like ordinary water and ice, change from a liquid to a solidified substance, which is a solid crystal, near the freezing point and flow. Sex is lost. Also, some alcohols continuously increase in viscosity as the temperature decreases,
Some of them eventually become solids, and since they do not have a definite solidification melting point, they cannot be used as cold storage materials utilizing latent heat of fusion. Furthermore, if these chemicals are simply used as cold storage materials at low temperatures, volume changes occur during the phase change between liquid and solid, causing deformation and damage to the equipment. The rate is very bad, because it is not a fluid, L
Due to the necessity of a heat exchange area with NG or a heat transfer utilization medium, the regenerator heat exchanger becomes very large and the equipment cost becomes excessive.

The present invention solves the above-mentioned drawbacks of the prior art, and allows cold storage using latent heat at a cold storage temperature at which cold heat is to be used, and also provides low-temperature fluidity that can provide fluidity in a cold storage state. It is intended to provide a cool storage material.

[0007]

SUMMARY OF THE INVENTION The low-temperature fluid regenerative material of the present invention maintains a part of a mixture of a coagulation component which mainly produces a coagulate at a low temperature to be stored and a coagulation temperature lower than the coagulation component in a liquid state. set into a fluidized state of mixture of the liquid and fine ice cold cool storage temperature and a liquid component having an action as a main component, the main component only, or those with formed by mixing the low fluid component solidification temperature than the main component , Specific below
It is characterized by being composed of a main component . In other words, in a temperature range where cold storage is required, the cold storage material that solidifies and melts is made to be in a soft ice state or in a mixed phase state mainly composed of fine crystals and liquid, and is allowed to flow. Therefore, in order to create a flowable solidification state, two substances (coagulation component and liquid component) that mutually melt in the required cold storage temperature range and have different melting points as the main components, only this main component or this main component Another liquid component having a lower solidification temperature is added to the main component, and a low-temperature fluid regenerator material having a different regenerative temperature is obtained by changing the substance itself and the mixing ratio of the main component.

When this low-temperature fluid regenerative material is used, for example, for regenerative storage of LNG, heat transfer per unit time (heat duty) is used for cooling by LNG or heat transfer at a cold heat utilization destination.
The provision of a heat transfer device with the necessary heat exchange area enables cold storage and cooling, and the storage of the cold storage material requires a fixed heat exchanger with a heat transfer area provided for the entire amount of the cold storage material. Instead, it is possible to use a storage tank that simply stores the cold storage material.

As a substance constituting the main component of such a low-temperature fluid cold storage material, for example, the following mixtures can be mentioned. (1) a mixture of normal-hexane and iso-pentane, (2) a mixture of normal-hexane and normal-pentane, (3) a mixture of normal-hexane and gasoline, (4) a mixture of meta-xylene and toluene, (5 ) A mixture of kerosene and gasoline, (6) a mixture of ortho-xylene and toluene, (7) a mixture of ethanol and normal-propanol, (8) a mixture of methanol and normal-propanol, (9) a mixture of methanol and ethanol, ( 10) A mixture of iso-propanol and ethanol.

[0010]

[Action] were melted together at such a need cold storage temperature range, and the two substances different melting points (coagulation and liquid components), low temperature fluidity cold accumulating material mainly composed of specific materials of the above For the cold storage, when cooled from the liquid state, the mixture mainly composed of the solidification component having a high solidification temperature solidifies at a temperature slightly lower than the simple solidification temperature, but due to the mixing action with the liquid component having a lower solidification temperature, A part of the solidified component generates fine crystals, and a liquid mixture is interposed between the crystal particles, whereby flowable crystals or soft crystals are generated at a substantially constant temperature. Therefore, if the cold storage is performed at a substantially constant temperature at which the flowable crystal or the soft crystal is generated, the cold storage using the latent heat can be performed in a state where the fluidity is given.

[0011] The cold storage material obtained by mixing the solidified component and the liquid component has a solidification starting temperature of the solidified component that differs depending on the substance. This is almost the same as the case of liquid-solid phase change of one chemical substance or the like.

In addition, not only the cold storage temperature can be changed by changing the two substances constituting the solidified component and the liquid component, but also the mixing ratio (weight ratio) of the two substances.
By changing the melting temperature, the melting temperature can be slightly changed.

Further, as the low-temperature fluid regenerative material, almost the desired properties can be obtained with a mixture of only two types of a solidification component and a liquid component, but mixing of a third substance and mixing of a substance as an impurity are difficult. Even if it is, flowable crystal solidification is possible. Therefore, the low-temperature fluid regenerative material is not limited to those composed of only the main components of the two types of raw materials, the solidification component and the liquid component. A substance (liquid component) having a lower melting point (lower solidification temperature) can be mixed as a third component into the main component to adjust the melting point of the crystal ice or change the fluidity at the same time.

The properties required as such a low-temperature fluid cold storage material cannot be obtained by any combination of substances, but vary depending on the attributes of the chemical substances, and also by the appropriate combination of mixtures and mixing ratios. There is aptitude and aptitude.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the low-temperature fluid regenerative material of the present invention will be described below in detail. The low-temperature fluid regenerative material of the present invention is easy to handle, industrially usable, and economical hydrocarbon-based material or alcohol-based material is used as a substance constituting a coagulation component and a liquid component, The mixing ratio in the case of mixing only these main components or other liquid components with these main components is adjusted according to the required cold storage temperature. The low-temperature fluid regenerative material allows cold storage (cooling and solidification) and cooling (heating and melting) by heat transfer in a fluidized state.

Example 1 Normal-hexane (melting point-
93.35 ° C) and iso-pentane (melting point-159.9)
C), a coagulate having a different coagulation temperature and melting temperature is produced depending on the mixing ratio. For example, normal-hexane is 90% by weight and iso-pentane is 10% by weight.
% Of the mixture is cooled with appropriate stirring to produce a soft crystalline coagulate having a melting point of about -99 ° C. This is because iso-pentane acts to form fine crystal particles mainly composed of normal hexane without coagulating the entire mixture, and a liquid of normal hexane and iso-pentane is interposed between the particles. This is because the number of solidified particles can be increased without solidifying and solidifying the crystals.
At the stage where the solidification starting temperature and the soft solidified material increase, the cooling temperature slightly decreases, but the difference is small, and the melting point of the crystal solidified material in a range where fluidity can be obtained is almost constant. The melting point of the soft and fluid coagulate differs depending on the mixing ratio of the two, and if the proportion of iso-pentane is increased, a soft coagulate having a low melting point can be obtained. In normal-hexane 20% and iso-pentane 80%, about -150 ° C
However, when the amount of iso-pentane is larger than that, a part of the coagulated material may be easily cooled and become hard crystals. No. Conversely, when normal-hexane is 97% and iso-pentane is 3%, a solidified substance having a melting point of about -100 ° C is obtained. However, when the proportion of iso-pentane is smaller than this, the solidified substance is hard and it is difficult to obtain fluidity. State.

Example 2 Normal-hexane (melting point-
93.35 ° C) and normal-pentane (melting point -129.
72 ° C.) can produce various levels of soft coagulum at the mixing ratio. For example, by cooling a mixture of normal-hexane 80% and normal-pentane 20% by weight, a soft coagulate having a melting point of about -98 ° C can be obtained.

The weight ratio of the two to obtain practical soft crystals as a regenerator material is as follows.
-20%, normal pentane is in the range of 5-80%, and the cold storage temperature is -95 to -11, depending on the mixing ratio.
A low-temperature fluid regenerator material in the range of 5 ° C. was obtained.

Example 3 Normal-hexane has a melting point of -93.35 ° C., and gasoline has a viscosity increasing from about −136 ° C. and does not show a definite melting point. Soft and crystallizable ice can be obtained at a mixing ratio of 95 to 20% for normal-hexane and 5 to 80% for gasoline.
Then, according to the mixing ratio, the cold storage temperature is -95 to-
A low-temperature fluid regenerator material having a temperature range of 115 ° C. was obtained.

Example 4 The melting point of meta-xylene was -4.
7.87 ° C. and the melting point of toluene is −99.99 ° C.
Fine crystals having a melting point of 73.4 ° C. are formed in the liquid;
It can be a low-temperature fluid cold storage material. If the mixture of each 50% is further cooled to -95 ° C or lower, all of the mixture solidifies and loses fluidity and cannot be used as a cold storage material at this temperature. However, if normal-pentane (melting point is -129.72 ° C.) having a low solidifying temperature is further mixed with the mixture, which solidifies at -95 ° C. or lower and loses fluidity, the melting point becomes approximately −95 ° C. It becomes a low-temperature fluid regenerative material mixed with fluid liquid-fine solid, and can prevent solidification and solidification of all liquids. The weight ratio of meta-xylene to 70 to 30% and toluene to 30 to 70
%, The cold storage temperature varies from -70 to
A low-temperature fluid regenerator material in the range of -105 ° C was obtained.

Example 5 Kerosene (melting point -59 to -6)
6 ° C.) and gasoline (melting point of about −138 ° C.) in a weight ratio of 90 to 50% kerosene and 10 to 50% gasoline with a melting point of −60 to −50%.
A soft coagulated material at 80 ° C. is obtained, and can be used as a low-temperature fluid regenerator. For example, kerosene 80%, gasoline 2
0% of the mixture can produce a coagulum with a flowability of -61 ° C. Since kerosene and gasoline are both mixtures of many components, their melting points are not one point, they show a wide solidification state as described above, and there are some differences in physical properties depending on the product. However, with proper mixing of the two,
A low-temperature fluid regenerator material having a melting point at the above temperature can be produced. When the concentration of kerosene is 90% or more, the viscosity is high,
Not suitable as a fluid cold storage material.

Example 6 Ortho-xylene (melting point-2)
4.8 ° C.) and toluene (melting point −99.99 ° C.) in a weight ratio of 90-90% ortho-xylene.
When the melting point is in the range of 30% and the toluene is in the range of 10 to 70%, a fluid cold storage material having a melting point of −30 ° C. to −85 ° C. can be generated. For example, if a mixture of 70% ortho-xylene and 30% toluene is cooled, needle-like crystals having a melting point of −42 ° C. are precipitated and can be used as a fluid regenerator.

When the amount of ortho-xylene is more than 90%, the crystal is frozen hard and is not suitable as a fluid regenerator, and when it is less than 30%, the formation of the crystal is reduced to a small extent. Use effect is small.

Example 7 The melting point of pure ethanol was -11.
2.2 ° C. (in the literature, there is also a temperature of −114.05 ° C.), which is added to normal-propanol (−12
In a mixed solution having a viscous property at around 6 ° C. and no clear melting point) of 4.76%, a hard crystal is formed at −114.6 ° C., but in a mixed solution of 9% normal-propanol, , Soft crystals are formed at -118.8 ° C. Also,
When the mixing ratio of normal-propanol is 50%, the viscosity becomes high as a viscous liquid, and there is no solidification (melting) temperature. Therefore, the weight ratio of ethanol is 95-8%.
0% and normal-propanol 5-20%,
The cold storage temperature is -117 to -125 ° C according to the mixing ratio
The low temperature fluid regenerative material of the range was obtained.

Example 8 Methanol (melting point-97.6)
8 ° C.) and normal-propanol in a weight ratio of 97-80% methanol, 3-20% normal-propanol, and a melting point of −98 ° C.
A soft low-temperature fluid regenerator material having a temperature of -105 ° C was able to be produced. For example, a liquid mixture of 88% methanol and 12% normal-propanol can produce a fluidized solid at -102 ° C. When the content of methanol is 97% or more, hard crystals are formed, and in a mixture containing more than 80% of methanol, both components are separated into two layers in a very viscous state and cannot be used as a fluid cold storage material.

Example 9 The crystal of a mixture of methanol having a melting point of -97.68 ° C. and 4% of ethanol having a melting point of −112.2 ° C. is hard, but the mixture of ethanol 3
At 0%, a fluid, soft ice is obtained. Further, when the proportion of ethanol is increased, a viscous liquid having no freezing point is obtained, and when the proportion of ethanol is 90%, on the contrary, -121.9.
Since it is a hard crystal at ℃, it cannot be used as a fluid cold storage material. Therefore, the weight ratio of methanol to 9
When 0 to 50% and ethanol were 10 to 50%, it was possible to obtain a low-temperature fluid cold storage material having a cold storage temperature in the range of -102 to -125 ° C depending on the mixing ratio.

EXAMPLE 10 A mixture of iso-propanol having a melting point of -87.95 ° C. and ethanol having a melting point of -112.2 ° C. was obtained by mixing iso-propanol in a weight ratio of 9%.
A soft coagulate can be formed at a ratio of 3% to 80% and ethanol of 3% to 20%. For example, a mixture of 91% iso-propanol and 9% ethanol is-
Produces a soft coagulum with a melting point of 104.2 ° C.
If the content of iso-propanol is more than 93%, the crystals are soft but have poor fluidity.
If the content of propanol is less than 80%, a viscous coagulate is formed, which is not suitable as a fluid regenerator.

By using such a low-temperature fluid cold storage material having a different main component in accordance with the temperature required for cold storage, it is possible to use a latent heat while maintaining the fluidized state. Cooling can be performed. Further, when this low-temperature fluid cold storage material is used for storing cold energy of LNG, about 80% of the cold energy, which was conventionally available only from about 10 to 20% or less of the total LNG consumption, is used. It is possible to use it effectively. For this reason, not only effective use of energy but also freedom and stability of operation of a utilization device utilizing cold heat and LNG vaporization supply for supplying cold heat are achieved. Furthermore, the capacity of air separation such as production of liquid oxygen and the capacity of LNG cryogenic power generation can be increased due to the increase in the amount of chilled heat used. It can be expected to be used in various fields such as ultra-low temperature wide area use by transferring cold storage materials.

Next, LN using this low-temperature fluid cold storage material
An apparatus for producing and freezing liquid oxygen by utilizing the cold energy of G will be described with reference to FIG. This apparatus is composed of an LNG storage facility A serving as a cold heat source and a medium-low pressure air liquefaction apparatus B.
And a refrigerating device C, and two low-temperature fluid cold storage materials a and b having different cold storage temperatures are used.

In the LNG storage facility A, liquefied natural gas having a boiling point of -162 ° C. is stored in the LNG storage tank 1, and the LNG discharged by the discharge pump 2 is sent to the ultra-low temperature heat exchanger 3. ing. In this ultra-low temperature heat exchanger 3, a low-temperature fluid regenerator material a having a regenerative temperature of about -100 ° C. is used, and heat is exchanged with LNG to cool. As the low-temperature fluid regenerator material a, for example, a mixture of normal-hexane 60% and gasoline 40% is used, and fluid ice is generated at -103 ° C.

This low-temperature fluid regenerator material a is stored in the first regenerator material tank 4 and sent out to the air liquefaction unit B by the sending pump 5 as required.

In the air liquefaction apparatus B, a main cooler 6 is provided instead of the conventional CFC refrigerator and expansion turbine.
The low temperature fluid cold storage material a is sent from the cold storage material tank 4 to cool and liquefy the nitrogen gas. A double rectification column 7 is provided to separate liquid air into liquid oxygen and liquid nitrogen. The air as a raw material is pre-cooled by a pre-cooling heat exchanger 8 and is compressed and supplied by a raw air compressor 9. The main cooler 6 is supplied with nitrogen gas compressed by the nitrogen gas compressor 10.

In such an air liquefier B, since the cold heat of LNG is stored and used in the main cooler 6 by the low-temperature fluid refrigerating material a, the Freon refrigerator and expansion of the normal air liquefier are used. Eliminates the need for turbines. Also,
Since the cold heat of LNG is stored in the low-temperature fluid cool storage material a, the air liquefaction apparatus B can be operated without being affected by the amount of LNG discharged from the LNG storage tank 1. The LNG thus used for cooling the main cooler 6 of the air liquefaction apparatus B is supplied to the outlet of the ultra-low temperature heat exchanger 3 at -105.
It is heated to about ° C, but still has enough cold heat.

Therefore, this cold heat is used in the refrigerating device C. In the refrigerating apparatus C, the medium- and low-temperature heat exchanger 11 is provided, and LNG heated by the ultra-low-temperature heat exchanger 3 is sent to be exchanged with the low-temperature fluid cold storage material b.

As the low-temperature fluid cold storage material b, for example, a mixture of kerosene and gasoline is used.
Perform cold storage. The low-temperature fluid regenerator material b that has been cooled by the medium-low temperature heat exchanger 11 and has become fluid ice is stored in the second regenerator material tank 1.
2 and sent to a condenser 14 for cooling and condensing the freezer refrigerant as required by a delivery pump 13. To this condenser 14, unlike a normal device, a refrigerant gas such as chlorofluorocarbon, which is kept at a low pressure, is sent instead of a refrigerant gas which is pressurized and compressed by a compressor, and is cooled and liquefied. Condenser 14
The refrigerant liquid liquefied in passes through the condensed refrigerant receiver 15,
For example, the refrigerant gas is sent to the unit cooler 17 of the refrigerator 16 that is frozen or refrigerated at −50 ° C., cooled at a temperature of −60 ° C. lower than the holding temperature in the refrigerator, and the vaporized refrigerant gas is circulated to the condenser 14.

In the refrigerating apparatus C as well, by using the cold heat of LNG as a regenerator material, a compressor (refrigerator) for compressing the refrigerant gas under pressure to liquefy the refrigerant gas becomes unnecessary. Further, since the cold heat of LNG is stored in the low temperature fluidity cold storage material b, the LNG from the LNG storage tank 1 is stored.
The refrigeration apparatus C can be operated without being affected by the amount of NG dispensed.

The LNG used for cooling the condenser 14 of the refrigerating apparatus C is sent to an LNG heater 18 and finally heated to 0 ° C. or more by seawater or the like and sent out as natural gas.

By using such a system in which the cold heat of LNG is stored and used in the low-temperature fluid refrigerating materials a and b, the ultra-low-temperature heat exchanger 3 and the medium-low temperature heat exchange can be performed by a fluid heat exchanger having good heat transfer. In addition to the configuration of the heater 11, the cold heat can be effectively used without any change in the consumption of LNG. Further, since the air liquefaction apparatus B does not use a normal Freon refrigerator or expansion turbine, the power consumption can be reduced to 60% or less of the energy of the normal system. Further, in the refrigerating apparatus C, it is possible to save power by about half or less compared to a normal type using a refrigerating machine, and up to about 20% according to a specification change from a design stage.

Furthermore, compared to the conventional cold heat utilization system in which the cold energy of LNG is directly used without being stored, if the cold energy is stored using a low-temperature fluid cold storage material and the cold energy is used, 3
In addition to being able to increase the capacity to more than double the capacity, it is also possible to operate the cold heat utilization facility regardless of the operating state of the LNG plant, and the reliability and freedom of operation of both the LNG plant and the cold heat utilization facility Can be increased. In addition, there is no need to provide cold energy utilization equipment that is attached to the LNG plant, and it is necessary to store cold in the low-temperature fluid cold storage material and send this low-temperature fluid cold storage material by pipes, or to store it in tanks and transport it. As a result, it is possible to use the remote equipment.

The low-temperature fluid cold storage material can be widely used not only for cold storage of LNG but also for other cold storage.

[0041]

As described above in detail with the embodiments, according to the low-temperature fluid regenerative material of the present invention, two solidified components which mutually melt in a required regenerative temperature range and have different melting points, respectively. And the liquid component as described above
Since the main component is a solid, when cooled from a liquid state for cold storage, the solidification component with a high solidification temperature mainly solidifies at a temperature slightly lower than the solidification temperature of the simple substance, but due to the action of the liquid component with a lower solidification temperature, A part of the solidified component produces fine crystals, and the liquid mixture intervenes between the crystal particles, whereby flowable crystals or soft crystals are generated at almost constant temperature, giving fluidity Cold storage using latent heat can be performed in this state. In addition, not only can the cold storage temperature be changed by changing the two substances constituting the solidified component and the liquid component, but also the melting temperature can be changed by changing the mixing ratio (weight ratio) of the two substances. it can. Further, as the low-temperature fluid regenerative material, almost the desired properties can be obtained with a mixture of only two kinds of a solidified component and a liquid component. However, the fluidity can be changed by mixing a third substance, or the impurity as an impurity can be obtained. Even if other substances are mixed, it is possible to solidify the crystal in a flowable manner, and similarly, it can be used as a low-temperature fluid cold storage material.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an LNG cold heat utilization system using a low-temperature fluid cold storage material of the present invention.

[Explanation of symbols]

 A LNG storage equipment 1 LNG storage tank 3 Ultra low temperature heat exchanger 4 First regenerator material tank a Low temperature fluid regenerative material B Air liquefier 6 Main cooler C Refrigeration unit 11 Medium / low temperature heat exchanger 12 Second regenerator material tank b Low temperature Fluid cool storage material

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-2-238277 (JP, A) JP-A-3-174485 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) C09K 5/00 C09K 5/06 CA (STN)

Claims (10)

(57) [Claims] At a low temperature of a cold storage temperature, a coagulation component which mainly forms a coagulate at a low temperature to be regenerative and a liquid component which has a function of maintaining a part of a mixture having a coagulation temperature lower than the coagulation component in a liquid state are used as main components. A low-temperature fluid regenerative material obtained by mixing a liquid and fine ice in a fluid state, and mixing only the main component or a fluid component having a lower freezing temperature than the main component, wherein the main component is normal-hexane and normal hexane. A mixture of iso-pentane, wherein the weight ratio of both is 97 to 20% for normal-hexane, 3 to 80% for iso-pentane, and the cold storage temperature is -100 to -150 ° C. Cold storage material. 2. Produces mainly coagulated material at a low temperature for cold storage
Of a solidifying component and a solidifying temperature lower than the solidifying component
A liquid component that has the function of maintaining a part of the liquid
Flow of liquid and fine ice at low cold storage temperature
It becomes a state and solidifies only from this main component or from this main component
A low-temperature fluid regenerator made by mixing low-temperature fluid components
There are, the main component of normal - hexane and normal -
A mixture of pentanes was used, and the weight ratio of both was 95 to 20% for normal-hexane and 5 to 80% for normal-pentane.
A%, that the cold storage temperature is -95-115 ° C.
Cold flow regenerator material, characterized. 3. Producing mainly coagulated material at a low temperature to be stored.
Of a solidifying component and a solidifying temperature lower than the solidifying component
A liquid component that has the function of maintaining a part of the liquid
Flow of liquid and fine ice at low cold storage temperature
It becomes a state and solidifies only from this main component or from this main component
A low-temperature fluid regenerator made by mixing low-temperature fluid components
The main component is a mixture of normal-hexane and gasoline, and the weight ratio of both is 9-normal-hexane.
A low-temperature fluid cold storage material characterized in that the storage temperature is 5 to 20%, the gasoline content is 5 to 80%, and the cold storage temperature is -95 to -115C. 4. Mainly produces coagulated material at a low temperature to be stored
Of a solidifying component and a solidifying temperature lower than the solidifying component
A liquid component that has the function of maintaining a part of the liquid
Flow of liquid and fine ice at low cold storage temperature
It becomes a state and solidifies only from this main component or from this main component
In formed by mixing the low fluid component temperature low temperature fluidity cold accumulating material
The main component is a mixture of meta-xylene and toluene, and the weight ratio of both is 70 to 30.
%, Toluene is 30 to 70%, and the cold storage temperature is -70.
A low-temperature fluid regenerator material having a temperature of from -105 ° C. 5. Producing mainly coagulated material at a low temperature to be stored.
Of a solidifying component and a solidifying temperature lower than the solidifying component
A liquid component that has the function of maintaining a part of the liquid
Flow of liquid and fine ice at low cold storage temperature
It becomes a state and solidifies only from this main component or from this main component
A low-temperature fluid regenerator made by mixing low-temperature fluid components
The main component is a mixture of kerosene and gasoline, the weight ratio of which is 90 to 50% for kerosene, 10 to 50% for gasoline, and the cold storage temperature is -60 to -80C.
A low-temperature fluid cold storage material characterized by the following . 6. A solidified product is formed mainly at a low temperature to be stored.
Of a solidifying component and a solidifying temperature lower than the solidifying component
A liquid component that has the function of maintaining a part of the liquid
Flow of liquid and fine ice at low cold storage temperature
It becomes a state and solidifies only from this main component or from this main component
A low-temperature fluid regenerator made by mixing low-temperature fluid components
The main component is a mixture of ortho-xylene and toluene, and the weight ratio of both is 90 to 90%.
30%, toluene is 20-70%, cold storage temperature is-
A low-temperature fluidity cold storage material having a temperature of 30 to -85 ° C. 7. A solidified product is formed mainly at a low temperature to be stored.
Of a solidifying component and a solidifying temperature lower than the solidifying component
A liquid component that has the function of maintaining a part of the liquid
Flow of liquid and fine ice at low cold storage temperature
It becomes a state and solidifies only from this main component or from this main component
A low-temperature fluid regenerator made by mixing low-temperature fluid components
The main component is a mixture of ethanol and normal-propanol.
80%, n - propanol is 5 to 20%, wherein the cold storage temperature is -117~-125 ℃
Cold flow regenerator material to. 8. A solidified substance is mainly produced at a low temperature to be stored.
Of a solidifying component and a solidifying temperature lower than the solidifying component
Main component and a liquid component having the effect of a part of maintaining the liquid
Flow of liquid and fine ice at low cold storage temperature
It becomes a state and solidifies only from this main component or from this main component
A low-temperature fluid regenerator made by mixing low-temperature fluid components
The main component is a mixture of methanol and normal-propanol.
80%, n - propanol is 3 to 20%, and wherein the cold storage temperature is -98~-105 ℃
Cold flow regenerator material to. 9. Produces mainly coagulated material at a low temperature for cold storage
Of a solidifying component and a solidifying temperature lower than the solidifying component
A liquid component that has the function of maintaining a part of the liquid
Flow of liquid and fine ice at low cold storage temperature
It becomes a state and solidifies only from this main component or from this main component
A low-temperature fluid regenerator made by mixing low-temperature fluid components
The main component is a mixture of methanol and ethanol, the weight ratio of both is 90 to 50% for methanol, 10 to 50% for ethanol, and the regenerative temperature is -102 to
A low-temperature fluid cool storage material characterized by having a temperature of -125 ° C. 10. A process for producing mainly coagulated material at a low temperature to be stored.
Mixing of the solidifying component to be formed and a solidifying temperature lower than this solidifying component
And a liquid component that has the effect of keeping a part of the material liquid.
Flow of liquid and fine ice at low cold storage temperature
And the main component alone or
Low-temperature fluid regenerator made by mixing low solid temperature fluid components
A is, the main component iso - and a mixture of propanol and ethanol, the weight ratio between the two is iso - propanol 93-80%, ethanol is 3-20%, the cold storage temperature is -88~-107 ℃ A low-temperature fluidity cold storage material characterized by the following .