KR101570734B1 - Cooling system using latent heat between ice and water - Google Patents

Cooling system using latent heat between ice and water Download PDF

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Publication number
KR101570734B1
KR101570734B1 KR1020150053206A KR20150053206A KR101570734B1 KR 101570734 B1 KR101570734 B1 KR 101570734B1 KR 1020150053206 A KR1020150053206 A KR 1020150053206A KR 20150053206 A KR20150053206 A KR 20150053206A KR 101570734 B1 KR101570734 B1 KR 101570734B1
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South Korea
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cooling
water
temperature
heat
ice
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KR1020150053206A
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Korean (ko)
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이수재
신재항
임승선
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일진파워텍(주)
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02Details
    • H02G3/03Cooling
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G9/00Installations of electric cables or lines in or on the ground or water
    • H02G9/10Installations of electric cables or lines in or on the ground or water in cable chambers, e.g. in manhole or in handhole

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)

Abstract

The present invention relates to an electric power tunnel cooling system using latent heat between ice and water. Particularly, the present invention relates to the system which can cool an electric power tunnel efficiently through the fact that the temperature of a cooling water does not change for a certain period due to phase change between the ice and the water in the cooling water, using the latent heat which is emitted or absorbed when an object changes a phase thereof without temperature change. In an indirect water cooling system to decrease the temperature in the electric power tunnel by supplying the cooling water into the electric power tunnel related with one example of the present invention, the electric power tunnel cooling system of the present invention includes: an ice machine for manufacturing ice; a supply unit which is supplied with the ice from the ice machine, and supplies the cooling water formed with the supplied ice and water; a water storage tank which is suppled with the cooling water from the supply unit and then stores the cooling water; a circulation pump for supplying the cooling water store in the water storage tank by circulating the cooling water; and a cooling pipe which is installed in the electric power tunnel, and decreases the temperature in the electric power tunnel by being supplied with the cooling water from the circulation pump. The temperature of the cooling water can not be changed during a certain period by phase change between the ice and the water in the cooling water, using the latent heat emitted or absorbed when the object changes the phase without temperature change.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling system using latent heat of ice and water,

The present invention relates to a power grid cooling system using latent heat of ice and water. Specifically, the present invention uses a latent heat that is released or absorbed when an object changes its state without a change in temperature, so that the temperature of the cooling water is not changed for a predetermined period due to a phase change between ice and water in the cooling water, To a cooling system.

Power lines carrying high-voltage power are limited in their maximum power transport according to their temperature, which causes the power line to generate heat and rise in temperature. As a result, the amount of power that can be transported by a predetermined power line decreases as the temperature rises.

Therefore, in order to smoothly transport electric power, the heat generated from the power line must be discharged to the outside, and generally, the air is discharged to the outside through the air inside the power line where the power line is located. Especially, the decrease of the amount of power transmission becomes more serious in the open - circuit type power field near the surface of the tunnel than in the tunnel.

Therefore, by keeping the temperature inside the power source below a certain temperature, the heat emitted from the power line is dissipated into the power source, and the temperature inside the power source is lowered to a certain temperature or less by using an appropriate cooling system. .

Also, by law, the temperature inside the electric power source (defined by the tunnel) is prescribed to be maintained at 37 ° C or lower.

In order to solve the above-mentioned problem, a conventional general power pool cooling system has an air blower installed at a predetermined location of a suction port formed at a predetermined site in the ground leading to an earth surface, and an air fan is installed at a predetermined location of a discharge port spaced by a predetermined distance. Only a blower may be provided at a predetermined position of the suction port or only an air fan may be installed at a predetermined position of the discharge port in order to reduce convenience and installation cost.

Actually, the suction port and the discharge port are designed to function as an entrance for an operator to go in and out for maintenance, maintenance and inspection of an underground electric power source, and are arranged to install a blower or an air blower at a certain position. In addition, the ventilation pipes are designed so that the blowing pipes are designed to extend from the intake port to the power port and extend from the exhaust port to the power port, so that the operator can move from the ground to the power port through these blowing pipes and the exhaust pipe.

In such a conventional power pool cooling system, air in the atmosphere is drawn into a suction port by operation of a blower installed at a predetermined portion of the suction port, and flows into the power port through a blowing pipe. The temperature is raised by the heat discharged from the power line disposed. The air whose temperature is raised is sucked by the operation of the ventilator disposed at the other side of the power port, and is discharged to the outside through the ventilator.

Through this process, the high-temperature air inside the electric power source is discharged to the outside, and thus the temperature inside the electric power source can be maintained at a certain temperature or lower while the external air circulates through the electric power source.

However, in such a power cooling system, the following problems exist.

In the case of high atmospheric temperature such as summer, the operating efficiency of the cooling system using the atmosphere is extremely low. This is because the outside air itself is hot and humid, so that even if a large amount of outside air is circulated, It is difficult.

Next, even when the power section enters and leaves a relatively long section, the conventional power section cooling system does not work effectively. This is because it is used as an entrance passage through which a worker moves into a power source using a blowing pipe and an air discharge pipe which are conventionally employed, so that it is difficult to circulate air smoothly when the length of the entrance and exit is long.

In addition, if the circulation flow rate of the air is increased according to the temperature inside the power source, there is a problem that the flow of the fast wind in the power source occurs, which hinders maintenance, maintenance and management activities of the power source.

Therefore, there is a need for an efficient power pool cooling system that solves such problems.

Korean Intellectual Property Office Publication No. 10-2011-0106667

It is an object of the present invention to provide a power pool cooling system using latent heat of ice and water to a user.

Specifically, the present invention uses a latent heat that is released or absorbed when an object changes its state without a change in temperature, so that the temperature of the cooling water is not changed for a predetermined period due to a phase change between ice and water in the cooling water, And to provide a cooling system.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are not intended to limit the invention to the precise form disclosed. It can be understood.

An indirect water-cooling type cooling system for supplying cooling water into a power source according to an embodiment of the present invention to lower the temperature in the power source, comprising: an ice maker for producing ice; A feeder for receiving ice from the ice maker and supplying cooling water composed of the supplied ice and water; A water storage tank for receiving and storing the cooling water from the feeder; A circulation pump circulating and supplying the cooling water stored in the water storage tank; And a cooling pipe installed in the electric power source and supplied with the cooling water from the circulation pump to lower the temperature in the electric power source, The temperature of the cooling water may not be changed for a predetermined period due to a phase change between ice and water in the cooling water.

In addition, the first region of the entire region of the cooling pipe may further include a heat insulating layer for blocking heat loss, and the second region excluding the first region may not include the heat insulating layer.

In addition, the second region may be a region of a cooling pipe provided in a hot spot section in which the temperature change of the entire region of the power hole exceeds a predetermined variation range.

In addition, the cooling pipe of the second region may be configured as a heat sink to facilitate heat dissipation.

In addition, the heat sink may further include at least one heat pipe for supporting heat transfer.

Further, the heat sink may further include a plurality of injection nozzles for spraying water in the cooling water to the outside, and the temperature in the heated electric power hole may be made faster by using water ejected from the plurality of injection nozzles .

In addition, when a fire occurs in the power port, the fire can be suppressed by using water ejected from the plurality of injection nozzles.

The present invention can provide a power pool cooling system using latent heat of ice and water to a user. Specifically, the present invention uses a latent heat that is released or absorbed when an object changes its state without a change in temperature, so that the temperature of the cooling water is not changed for a predetermined period due to a phase change between ice and water in the cooling water, A cooling system can be provided to the user.

It should be understood, however, that the effects obtained by the present invention are not limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those skilled in the art to which the present invention belongs It will be possible.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate a preferred embodiment of the invention and, together with the description, serve to provide a further understanding of the technical idea of the invention, It should not be construed as limited.
FIGS. 1A to 1D are views for explaining a specific example of a wind-chilled air-cooling system, an indirect water-cooling system, an indirect water-cooling system in a trough, and a direct water-cooling system.
Figs. 2A to 2E are views for explaining a specific example of forced air blowing at one end, forced forced air at both ends, forced forced air at both ends, forced air blow at both ends, and duct blowing.
3A to 3C show a specific example of a conventional cooling system installed and operating.
Fig. 4 shows a concrete example of another cooling system which is installed and operated conventionally in connection with the present invention.
Fig. 5 shows one specific example of the cooling system proposed by the present invention.
FIG. 6 is a table for explaining an effect that can be provided to a user when the cooling system according to the present invention proposed in FIG. 5 is applied.
FIG. 7 is a diagram showing a space in which a high temperature and a low temperature are separated in a power hole according to the present invention.
8A and 8B show a concrete example of a cooling pipe provided with a cooling pipe without heat insulating layer and a heat insulating layer in connection with the present invention.
Fig. 9 shows a concrete example of a cooling pipe including a heat sink with a built-in heat pipe, according to the present invention.
FIG. 10 shows a concrete example of the configuration of a cold water pipe and a heat sink in the electric power system proposed by the present invention.
11 shows a specific example of a plurality of nozzles applied to the cooling pipe proposed by the present invention.

First, explain the cause of the temperature rise of the power section.

With economic growth and improved living standards, demand for electricity in large cities is steadily increasing.

In order to prepare for such an increase in electric power demand and to improve the reliability of the supply system of the urban power system, construction of an underground transmission line is inevitable in order to construct an environmentally friendly transmission line considering the urban beauty.

Generally, the losses occurring in cables are divided into conductor loss, dielectric loss, and loss of sheath.

This loss is a direct cause of the increase in the internal temperature of the power source, leading to a reduction in the originally designed transmission capacity.

Therefore, countermeasures are being discussed to prevent such a power source temperature rise.

There are various forced cooling methods to remove generated heat. Direct cooling and indirect cooling can be classified according to the cooling method.

Direct cooling includes an internal cooling method that allows cooling medium to pass through the cable, and an external cooling method that removes heat generated by passing the cooling medium through a direct connection to the outside of the cable. Direct water cooling and direct water cooling are included here.

The indirect cooling method is a cooling method in which a cooling medium flows near a cable to suppress an increase in ambient temperature rising due to heat generated in the cable.

The cooling system for power grid installation can be divided into a wind-cooling system and a water-cooling system.

Compared with other methods, the wind-cooled system is simple and easy to repair. However, since the outside air needs to be circulated in the power source, it is easily influenced by the outside air temperature, and the cooling effect may be different depending on the season.

In addition, since the wind speed in the power section is limited in terms of the maintenance and operation performance of the power section, the length of the cooling section can be increased, and thus it is mainly employed at a short distance.

In contrast, water-cooling systems are used for long-haul lines and direct and indirect cooling methods are available.

In addition, direct water cooling is advantageous for cooling a specific cable village, and indirect water cooling is advantageous for the purpose of lowering the power source temperature.

Since direct water cooling can directly cool the cable, the cooling effect is high. However, since high pressure water is always applied to the cable, special design is needed in consideration of the water resistance of the cable system and the cooling method of the connection box.

Indirect cooling is mediated by the air between the cable and the water cooling tube, so the cooling efficiency is somewhat lower than direct water cooling. However, it can be separated from the cable, easy to repair, There is an advantage.

There are currently electric power cooling methods such as conductor cooling, surface cooling, external cooling, external cooling (external air cooling), surface cooling (circulation cooling), and heat-pipe cooling.

First, the conductor cooling method has a high cooling effect and an increase in the transmission capacity, and the cooling section is short. Special cables (FJ) and special terminations are required to extend the cooling range and accurate measurement and monitoring of refrigerant temperature, pressure and cable temperature is required .

Next, the surface cooling method is required to have a high cooling effect and an increase in transmission capacity next to the internal cooling method, a pipe through which the refrigerant flows, a mechanical stress and the like, the cable must have a perfect order structure, And measures against heat expansion and contraction are necessary.

In addition, the external cooling method has a low cooling effect and an increase in the transmission capacity, has a relatively long cooling section, can be applied to existing service lines, has a higher installation cost than the cooling effect, System can be separated, and there is little impact in case of accident.

In addition, the external cooling (external air cooling method) has a low effect of cooling effect and transmission capacity increase, can cool a large number of cables at the same time, can be used for existing service lines, has a short cooling section, And the risk of fire is high.

Also, the surface cooling (pumping method) method is applied only to the POF cable, the cooling section is relatively long, the installation cost is low, and the cable insulating oil can be used as the refrigerant.

In addition, the heat-pipe cooling system has a low cooling effect, a low transmission capacity, a short cooling section, is available at local high temperature points, and is used at connecting and terminating ends. And is inexpensive.

Next, FIGS. 1A to 1D are views for explaining a specific example of a wind-chilled air-cooling system, an indirect water-cooling system, an indirect water-cooling system in a trough, and a direct water-cooling system.

In the power room air cooling system shown in FIG. 1A, air is circulated through the electric room using a blower to indirectly cool the cable.

In the indirect indirect water cooling system shown in FIG. 1B, cold water made in the freezer and cooling tower is sent to a water-cooled tube installed in the electric power plant to indirectly cool the cable.

The basic structure of the intra-trap indirect water cooling system in Fig. 1C is the same as that of the indirect water cooling in the power house, but when the cable is installed in the trough, a water-cooled tube is disposed in the trough.

The basic structure of the in-trough direct water cooling system of Figure 1d is the same as that of the indirect water cooling in the electric power plant, but indirectly cooling the cable installed in the water cooling pipe by cold water.

On the other hand, the air-cooling system in the power house is a system that cools the air inside the power house, and its purpose is clearly different from the hygienic ventilation aimed at environmental preservation such as oxygen deficiency, but the effect of air cooling by ventilation is added to the transmission capacity.

The air-cooling system in the power plant is a method of cooling the outside air by blowing the outside air into the power room by installing a blower around the ventilation hole, and there are various blowing methods depending on the installation position of the blower and the ventilation method.

Figs. 2A to 2E are views for explaining a specific example of forced air blowing at one end, forced forced air at both ends, forced forced air at both ends, forced air blowing at both ends, and air blowing in a duct.

The forced forced air blowing in one direction in Fig. 2A is the most economically advantageous compared to the other systems, and the effect of the section where the loss is great if there is a difference in pressure loss can not be expected.

If the pressure loss of both side sections of the air intake hole is almost the same as the standard of the air blowing method, the length of the applicable section is about 500 m.

2B is effective even when the facility cost is high but the pressure loss in the power plant is high.

When the applicable standard is that the pressure loss in the power plant is high, it can not cope with forced air blowing at one side, it does not fall into the noise limit value even if a noise silencer is installed for forced air blow at one side, It is about 1,000 meters long.

The intermediate forced blowing in Figure 2c is most advantageous in terms of noise, although the equipment cost is high.

As for the applicable standard, when the installation space of the blower or the blower including the noise equipment can not be ensured in both intake and exhaust ports, the length of the application section is about 500 m.

Further, the intermediate forced air blowing in Fig. 2 (d) can be applied even when the pressure loss in the power source is extremely high by installing the intermediate blower.

Applicable standards are that the length of the applicable section is not less than 1,000 m when the length between the tuyeres is so long that it can not be accommodated by forced air blowing at both ends.

In addition, in the duct blowing in Fig. 2E, when the duct is long, the equipment cost becomes high. When a large amount of air is required, the effective dimension in the power duct may be small due to the duct.

As an application standard, there is a case in which the intake and exhaust air holes can only be secured to one side.

3A to 3C show a specific example of a conventional cooling system installed and operating.

4 shows a specific example of another cooling system which is installed and operated in the related art in connection with the present invention.

Fig. 4 discloses a cooling system disclosed in Korean Patent Publication No. 10-2011-0106667.

Referring to FIG. 4, in the configuration disclosed in FIG. 4, coolers 1 and 2, which are responsible for a power section of a predetermined length (for example, 4 km), are installed on both sides of a certain length section, A circulation pump for circulating and supplying the cooling water stored in the one side water storage tank 13 is provided after having a normal cooling system composed of the small-capacity small cooling towers 11 and 21, the refrigerators 12 and 22 and the water storage heat storage tanks 13 and 23, The cooling water is supplied to the cooling pipe 31 provided in the electric power tool 3 by using the cooling water pipe 14 so as to lower the temperature in the transmission and distribution cable 33 and the power pipe. 2 to the water storage tank 23.

Likewise, the cooling water stored in the other side water storage tank 23 is also circulated by the circulation pump 24 to lower the temperature of the electric power source 3 in the interval of a predetermined distance along the same path as described above, .

When the cooling water is supplied to the other cooling unit using the cooling pipe, the cooling water supplied to each other is controlled so that the cooling water supplied to the other cooling unit is supplied to the opposite cooling unit at the same flow rate at the same time.

Also, considering the failure of pumps, the capacity of each water storage tank is designed to be larger than the required capacity, and the pumps are also equipped with spare parts. The investment cost is much smaller than the cooling pipe, It is possible to reduce costs related to the cooling pipe by about three.

Although the present invention has been described in terms of a unit configuration, the present invention can be configured such that the cooling system of the present invention is installed in a required section or a necessary distance. However, , 4 km) so that additional cooling capacity is required, or if the cooling system of the present invention is continuously expanded, the cooling system can be configured and operated in a multi-system.

In addition, the cooling pipes with additional coolers are installed in the same way as the unit cooling system, and each branch cooling pipe and the changeover valve are installed.

As shown in FIG. 3, when the cooling ovens are installed at both ends of the electric power source, the temperature near the air outlet provided at intervals of 1000 mm within the electric power unit unit interval of a predetermined distance (for example, 4 km) is constant, It is not necessary to supercool the remaining section to maintain the temperature of the cooling water (the point at which the cooling water furthest from the cooling water is collected) at 37 占 폚.

That is, by allowing the temperature at the hot spot point to be controlled similarly, over investment is prevented.

More specifically, since the cooling effect is not reduced due to the increase in the temperature of the cooling water recovered after the supply of the cooling water as in the prior art by supplying the cooling water from the both cooling stations to the counterparts, the average temperature of the cooling water, The cooling effect in the electric power section becomes large.

However, in FIGS. 3A to 4, there is a problem that it is difficult to efficiently operate the cooling system according to the cable load.

That is, there is a problem that it is difficult to operate the optimum cooling system according to the cable load pattern of the power system installed in the cooling system.

In addition, there is an inconvenience that the electric bulb temperature should be reduced by installing a temporary fan for discharging hot air at the air vent opening and hot spot posterior point.

In addition, there is a problem that a cold water pipe must be installed in addition to the temperature rise due to a load increase expected during the winter power supply period.

In addition, there is also a problem that the efficiency of the connection space and the installation space of the cooling pipe in the power port is low.

In addition, the invention proposed in Fig. 4 has a problem that the structure is bulky and bulky, and installation cost is excessively required.

Accordingly, the present invention proposes a power cooling system using latent heat of ice and water to solve such a problem.

Specifically, the present invention uses a latent heat that is released or absorbed when an object changes its state without a change in temperature, so that the temperature of the cooling water is not changed for a predetermined period due to a phase change between ice and water in the cooling water, To provide a cooling system to the user.

The cooling system 1000 proposed by the present invention is an indirect water-cooling type cooling system for lowering the temperature in the power source by supplying cooling water into the power source.

The cooling system 1000 according to the present invention includes an ice maker 100 for producing ice, a feeder 200 for receiving ice from the ice maker and supplying cooling water composed of the supplied ice and water, A circulation pump (not shown) for circulating and supplying the cooling water stored in the water storage tank, and a cooling pipe 300 (see FIG. 1) installed in the electric power source and receiving the cooling water from the circulation pump, ).

At this time, the present invention uses a latent heat that is released or absorbed when the state of the object changes without changing the temperature, and the temperature of the cooling water is not changed for a predetermined period due to a phase change between ice and water in the cooling water, Can be provided.

The regenerative air conditioning system is a very efficient energy saving system in terms of efficiency of energy use.

Fig. 5 shows one specific example of the cooling system proposed by the present invention.

The basic method proposed by the present invention is to carry out continuous constant operation of cold air efficiently against fluctuating air conditioning load as shown in Fig.

It is necessary to store the cold heat of the nighttime operation shown in Fig. 5 against the demand during the daytime.

There is a method of using cold water and an ice storage method in this storage heat, and there is an advantage that the ice storage heat can be miniaturized to 1/6 to 1/8 in volume of the heat storage tank as compared with the case of cold water.

It is the heat pipe ice storage heat power cooling system which made use of heat pipe for this ice storage heat efficiency.

We explain the principle of this system in detail.

In relation to latent heat, the amount of energy absorbed or released by the material when the physical state of the material changes, without changing the temperature, is also referred to as latent heat.

The latent heat that accompanies a solid or frozen liquid is called the heat of fusion, and the heat that is latent when the liquid or solid vaporizes or when the vapor condenses is called the vaporization heat.

For example, when the kettle's water boils, the temperature is maintained at 100 ° C until the water evaporates, because the heat applied to the water is absorbed by the heat needed for vaporization or the kinetic energy of the vapor molecules.

Likewise, when the ice melts, it is maintained at 0 ° C and the liquid water formed by absorbing the heat of fusion is 0 ° C.

The crystal state of a solid is retained as a force acting between molecules or ions, and they oscillate near the average position of the lattice.

When the heat is absorbed, the vibrational motion continues to grow, and as the melting point, the acting force can no longer keep the arrangement of the grids in order.

At the melting point, the solids change into liquids, each particle in the liquid moving independently, attracted by forces that are much weaker than solids and much less directed in space.

When the material is sufficiently heated, the force of bonding the particles of the liquid body to each other is broken and the liquid changes to vapor at the boiling point.

Hidden heat also occurs in processes other than changes between solids, liquids, and gases that occur in pure materials.

Many solids have many crystals, and the conversion between them usually involves the absorption or release of latent heat.

The process by which one substance dissolves in another is often accompanied by heat, and if the dissolution process is a pure physical change, the heat is a latent heat.

In some cases, however, the dissolution process involves chemical changes, in which part of the accompanying heat is the reaction heat associated with the chemical reaction

Apply latent heat to water and ice.

Even if a mixture of ice and water is heated, the temperature is kept at 0 ° C while the two are present together.

This is because the externally applied heat is not used to change the temperature but is used for a phase change of solid → liquid.

Here, the latent heat in melting is called melting heat (or heat of fusion).

When the water is heated, the temperature gradually rises, and when it reaches 100 ° C at 1 atm, it turns into water vapor as well as the surface of the water, resulting in a lot of bubbles.

This is a phenomenon of boiling (or boiling).

The temperature is maintained at 100 占 폚 for the duration of the boiling.

In this case, heat applied from the outside is used for phase change of the liquid → gas without changing the temperature. Such a gas's hidden heat is called vaporization heat (or evaporation heat).

To completely melt 1 g of ice at 0 ° C, a calorie of 80 cal must be applied, which is called molar heat of melting (or molar heat of melting) of ice.

Further, in order to completely vaporize 1 g of water at 100 ° C, a heat quantity of 539 cal is required, which is referred to as molar vaporization heat of water (or molar evaporation heat).

Conversely, when water vapor turns into water and then water turns into ice, positive heat, such as heat of vaporization or melting, is released.

That is, the molar edge heat (or molar heat of condensation) released when the water vapor turns into water is the same as the molar heat of vaporization, and the molten solid heat, which is the heat released when the water turns into ice, is the same as the molten heat.

In addition, the hidden heat at the time of sublimation is called the sublimation heat.

Therefore, the present invention is based on the above-described theory, by using latent heat that is released or absorbed when an object changes its state without a change in temperature, so that the temperature of the cooling water is not changed for a predetermined period due to a phase change between ice and water in the cooling water To provide the user with a system that can efficiently cool the power tool through the power tool.

FIG. 6 is a table for explaining an effect that can be provided to a user when the cooling system according to the present invention proposed in FIG. 5 is applied.

As shown in FIG. 6, the transfer capability is about 5.2 times that of the conventional method under the same condition.

When ice and water (50%) are mixed, it is much better and the higher the ratio of ice, the higher the heat transfer capacity.

On the other hand, the temperature distribution of the power sphere shows various values throughout the whole area due to factors such as the depth of the power sphere, the ground water level, the soil, the interval of the ventilation holes, the operating method, and the number of installed lines in the power sphere.

FIG. 7 is a diagram showing a space in which a high temperature and a low temperature are separated in a power hole according to the present invention.

In the section of the Kim Shinpo power plant shown in Fig. 7, there is a hot spot section at a temperature high enough to install a local cooling device.

Therefore, it is inefficient to cool the whole area (about 4km) with the same amount of heat dissipation like the current power pool cooling system.

It is required to design and manufacture a new cold water pipe which cools more in high temperature area and does not cool low temperature part.

Therefore, in the present invention, the first region of the entire region of the cooling tube 300 may further include a heat insulating layer for blocking heat loss, and the second region of the entire region except for the first region may have no heat insulating layer have.

Specifically, in the present invention, the second region may be a region of a cooling pipe installed in a hot spot section in which the temperature change of the entire region of the power sphere exceeds a predetermined variation range.

8A and 8B show a concrete example of a cooling pipe provided with a cooling pipe without heat insulating layer and a heat insulating layer in connection with the present invention.

8A shows a cooling tube 300 in a second region, that is, a region of a cooling tube provided in a hot spot section in which a temperature change exceeds a predetermined variation range. Since the cooling tube 300 does not have a heat insulating layer, Effect can be delivered.

Next, FIG. 8B shows a configuration of the cooling pipe 300 that is provided in the first region, that is, the region where the heat insulating layer is not provided, and the temperature is low so that the temperature loss hardly occurs.

On the other hand, the cooling pipe in the second region may be configured as a heat sink to facilitate heat dissipation. And the heat sink may additionally include at least one heat pipe for supporting heat transfer.

Fig. 9 shows a concrete example of a cooling pipe including a heat sink with a built-in heat pipe, according to the present invention.

Referring to FIG. 9, a heat sink with a built-in heat pipe is installed to efficiently cool a high-temperature cable and a power socket.

10 shows a concrete example of the construction of a cold water pipe and a heat sink in the electric power system proposed by the present invention.

Referring to FIG. 10, there is shown a power pool cooling system that maximizes cooling efficiency while minimizing heat loss by installing a heat sink having a heat pipe in a cold water pipe having an insulating structure.

In other words, the effect according to the present invention can be maximized by selectively separating a section where the cooling is not required (a section with a low temperature) and a section requiring a cooling (a section with a high temperature), and a heat insulating layer and a heat pipe.

According to another embodiment of the present invention, the heat sink may further include a plurality of spray nozzles for spraying the water in the cooling water to the outside, and the water sprayed from the plurality of spray nozzles, It is possible to further lower the temperature in the chamber.

11 shows a specific example of a plurality of nozzles applied to the cooling pipe proposed by the present invention.

The plurality of nozzles shown in Fig. 11 can also be used for fire suppression purposes.

That is, when a fire occurs in the power port, the fire can be introduced using water ejected from the plurality of injection nozzles.

The present invention can also be embodied as computer-readable codes on a computer-readable recording medium. A computer-readable recording medium includes all kinds of recording apparatuses in which data that can be read by a computer system is stored. Examples of the computer-readable recording medium include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like, and may be implemented in the form of a carrier wave (for example, transmission over the Internet) .

In addition, the computer-readable recording medium may be distributed over network-connected computer systems so that computer readable codes can be stored and executed in a distributed manner. In addition, functional programs, codes, and code segments for implementing the present invention can be easily inferred by programmers of the technical field to which the present invention belongs.

It should be understood that the above-described apparatus and method are not limited to the configuration and method of the embodiments described above, but the embodiments may be modified so that all or some of the embodiments are selectively combined .

Claims (7)

An indirect water-cooling type cooling system for supplying cooling water into a power source to lower the temperature in the power source,
An ice maker for producing ice;
A feeder for receiving ice from the ice maker and supplying cooling water composed of the supplied ice and water;
A water storage tank for receiving and storing the cooling water from the feeder;
A circulation pump circulating and supplying the cooling water stored in the water storage tank; And
And a cooling pipe installed in the power port and receiving the cooling water from the circulation pump to lower the temperature in the power hole,
The temperature of the cooling water is not changed for a certain period of time due to a phase change between ice and water in the cooling water by using a latent heat which is released or absorbed when the object changes its state without changing the temperature,
Wherein a first region of the entire region of the cooling pipe further includes a heat insulating layer for blocking heat loss, and a second region of the entire region excluding the first region does not include the heat insulating layer,
Wherein the second region is a region of a cooling pipe provided in a hot spot section in which the temperature change of the entire region of the power hole exceeds a predetermined variation range.
delete delete The method according to claim 1,
Wherein the cooling tube of the second region is comprised of a heat sink that facilitates heat dissipation.
5. The method of claim 4,
Characterized in that said heat sink further comprises at least one heat pipe for supporting the transfer of heat.
5. The method of claim 4,
Wherein the heat sink further comprises a plurality of spray nozzles for spraying water in the cooling water to the outside,
And the temperature in the electric power source heated by using the water ejected from the plurality of injection nozzles is made faster and lowered.
The method according to claim 6,
When a fire occurs in the power source,
Wherein the fire is suppressed by using water ejected from the plurality of injection nozzles.
KR1020150053206A 2015-04-15 2015-04-15 Cooling system using latent heat between ice and water KR101570734B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200069031A (en) * 2018-12-06 2020-06-16 한국전력공사 Cooling apparatus of underground cable
CN115954811A (en) * 2022-12-26 2023-04-11 江苏菲勒电气有限公司 Cable bridge with dynamic heat dissipation effect

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100820097B1 (en) 2008-01-15 2008-04-08 (주) 테크윈 Two way cooling system and method for power cable tunnel cooling

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100820097B1 (en) 2008-01-15 2008-04-08 (주) 테크윈 Two way cooling system and method for power cable tunnel cooling

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200069031A (en) * 2018-12-06 2020-06-16 한국전력공사 Cooling apparatus of underground cable
KR102128446B1 (en) 2018-12-06 2020-06-30 한국전력공사 Cooling apparatus of underground cable
CN115954811A (en) * 2022-12-26 2023-04-11 江苏菲勒电气有限公司 Cable bridge with dynamic heat dissipation effect
CN115954811B (en) * 2022-12-26 2023-10-20 江苏菲勒电气有限公司 Cable bridge with dynamic heat dissipation effect

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