JPH0875328A - Cold heat carrying method and device using anti-freeze protein - Google Patents

Abstract

PURPOSE: To eliminate the need for a precise temperature control and contrive simplification by a method wherein the liquid with an anti-freeze protein added thereto is cooled to produce ice slurry and the ice slurry is carried through pipe to a predetermined place by a pump. CONSTITUTION: The liquid with an anti-freeze protein added thereto is sealed in pipe 1 and is circulated by a circulating pump 2. The liquid which gives off its heat and is rendered into a state of ice slurry at a cold heat generating part 3 is sent by a circulating pump to a cooling part 4 where the liquid heat is absorbed to cool the cooling part 4 to a low temperature. The liquid which gives off its heat at the cooling part 4 is sent back to the cold heat generating part 3 and is again rendered into the state of the ice slurry for recirculation. Alternatively, a tank is provided at the cold heat generating part to hold the liquid with the anti-freeze protein added thereto. The liquid which gives off its heat and is rendered into the state of ice slurry at the cold heat generating part is carried through pipe to a cold accumulating part by the pump for storage therein. The liquid stored in the state of ice slurry at the cold accumulating part is carried by the other pump to a predetermined place where cooling is required.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a device for transporting low temperature heat, and more particularly to a method and a device for fluidizing ice in the form of slurry and transporting the ice in the slurry through a pipe.

[0002]

2. Description of the Related Art In order to transport low-temperature heat (hereinafter referred to as cold heat) to another place, the cold heat is once applied to a liquid such as water to lower the temperature of the liquid, and this low-temperature liquid is passed through a pipe. The method of fluid transportation is adopted. However, in a system that transports cold liquid at a low temperature, the amount of cold transported by the low-temperature liquid is only that specific heat, and thus the amount of cold transported is not very large.

[0003] In order to increase the amount of cold transferred, it is preferable to temporarily convert the amount of cold into a form of coagulation heat which is absorbed when the liquid solidifies, and then transport the solidified liquid. Generally, currently, a method is employed in which ice is temporarily formed by freezing water by cold heat and the ice is transported.

[0004] However, in order to transport ice, it is necessary to transport block-shaped ice blocks, and there is no simple transportation method for transporting cooled liquid by piping. Therefore, conventionally, a method has been adopted in which an ice slurry composed of small ice particles is produced and the ice slurry is transported through a pipe. The above-mentioned conventionally used ice slurry is obtained when supercooled pure water is used, but may be made by scraping ice.

[0005]

However, the above-mentioned known method for transporting ice slurry has the following problems. That is, since a device for rapidly supercooling pure water is required, the size of the entire device is increased and the cost is increased. Further, it is difficult to handle the ice slurry because it is necessary to control the temperature of the ice slurry within a certain range so that the ice particles forming the ice slurry do not bond with each other. Further, in order to mechanically crush ice to produce ice slurry, a device for crushing the ice is required,
The entire device is further increased in size and cost is increased.

Accordingly, an object of the present invention is to provide a method and an apparatus for transporting an ice slurry by using a simple apparatus which does not require any special control, which ameliorates the drawbacks of the above-mentioned conventional cold transport using an ice slurry. To be.

[0007]

The features of the present invention are as follows. That is, an ice slurry is produced by cooling a liquid to which an anti-freeze protein is added, and the ice slurry is transported to a predetermined place by a pipe and a pump.

Furthermore, another feature of the present invention is that
In the cold heat transport method and apparatus using the antifreeze protein, ice nuclei bacteria are added to a liquid containing the antifreeze protein.

[0009]

According to the present invention, since the antifreeze protein produces a fine needle-like ice slurry, the ice slurry is transported by piping.

[0010]

EXAMPLES An example of the present invention will be described below.
Fish living near the North Pole and South Pole can live even in low temperatures because certain proteins lower the freezing temperature of blood. These proteins are antifreeze proteins (An
Many types have been known as tifreeze proteins. This antifreeze protein is
It has been found that it is associated with the surface of ice crystals and acts to prevent the growth of crystals.

The present inventors have conducted experiments to find out what kind of phenomenon occurs when water containing antifreeze protein is frozen at a low temperature, and as a result, many fine needle-shaped ice particles are produced. I found that. That is, it was found that an anti-freeze protein was used to obtain an ice slurry composed of many fine needle-shaped ice particles.

The anti-freeze protein seems to act to restrict the direction in which ice crystals grow in only one direction. As a result, needle-shaped ice crystals grow to a certain length. It is thought that it was broken and became an ice slurry composed of fine needle-like ice particles. Therefore, it was found that the ice slurries using the antifreeze protein did not bind to each other during the growth process or after the production.

Hereinafter, the cooling system of the present invention will be described with reference to the drawings. FIG. 1 is a schematic system diagram showing a cooling system according to one embodiment of the present invention. Referring to FIG. 1, a liquid to which antifreeze protein has been added is sealed in a pipe 1 and circulated by a circulation pump 2. The liquid that has radiated heat in the cold heat generating unit 3 (such as a refrigerator) and has been turned into an ice slurry is sent by a circulation pump, absorbs heat in the cooling unit 4, and cools the cooling unit 4 to a low temperature. The liquid radiated in the cooling unit 4 is returned to the cold heat generating unit 3 again, and circulated again in the form of an ice slurry.

FIG. 2 is a system diagram showing a cool storage device according to another embodiment of the present invention. Referring to FIG. 2, cold heat generating unit 1
1 is provided with a tank 12, which contains a liquid to which antifreeze protein has been added. The liquid radiates heat in the cold heat generating section 11 and becomes an ice slurry. The liquid in the form of ice slurry is transported by a pump 14 through a pipe 13 and stored in a cool storage unit 15. The liquid in the form of ice slurry stored in the storage unit 15 is stored in another pump 1
It is transported by 6 to a predetermined cooling unit 17 that requires cooling.

In the above embodiment, the cold heat generating sections 3 and 11
In the conventional system using pure water, it is necessary to have a structure of a cold heat generating part for rapid freezing, but in the present invention, ice-slurry is produced by the action of the antifreeze protein, so quick freezing is not necessary. Also, there is no need for a separate device for scraping the ice to produce an ice slurry.

In the above examples, it is more effective to add ice nuclei bacteria in addition to the antifreeze protein to assist the ice nuclei bacteria to produce ice. The ice nuclei bacteria have already been used in an artificial snow manufacturing apparatus or the like and are publicly known, so that the description thereof will be omitted.

[0017]

The effects of the present invention described above are listed below. Since no conventional device for rapidly supercooling pure water is required, the entire device is simplified and downsized, and the cost is reduced. Further, in the conventional ice slurry using pure water, it is necessary to control the temperature of the ice slurry within a certain range so that the ice particles do not bond with each other. However, according to the present invention, such precise temperature control is not required. Therefore, handling of the ice slurry is easy. The use of ice-nucleated bacteria further promotes the production of ice slurries and is efficient.

[Brief description of drawings]

FIG. 1 is a schematic system diagram showing a cooling system according to one embodiment of the present invention.

FIG. 2 is a system diagram showing a cold storage device according to another embodiment of the present invention.

[Explanation of symbols]

 1 Piping 2 Circulation Pump 3 Cold Heat Generating Part 4 Cooling Part 11 Cooling Heat Generating Part 12 Tank 13 Piping 14 Pump 15 Cool Storage Part 16 Pump 17 Cooling Part

Claims (4)

[Claims] An ice slurry is produced by cooling a liquid to which antifreeze protein has been added, and the ice slurry is transported to a predetermined place by piping and a pump. . 2. A liquid containing an anti-freeze protein,
A pipe for transporting the liquid to which the anti-freeze protein has been added, a pump installed in the pipe, and a cold heat generating unit for cooling the liquid to which the anti-freeze protein has been added to generate an ice slurry; A cold heat transport device using an anti-freeze protein, which transports the ice slurry to a predetermined place. 3. A liquid containing antifreeze protein added,
The method for transporting cold heat using the antifreeze protein according to claim 1, wherein ice bacterium is added. 4. A liquid containing antifreeze protein,
The cold heat transport device using an anti-freeze protein according to claim 2, wherein ice nuclei bacteria are added.