JPH08110185A - Thermal accumulator - Google Patents

Abstract

PURPOSE: To reduce the running cost and save energy relating to a floor-heating apparatus. CONSTITUTION: A space for heat storage covered by an insulating material 2 is filled with a heat-storing material 3 which is designed to store heat at temperatures of over 100 deg.C. In this heat-storing material 3 a plurality of heat- accumulating heat-exchange parts 4 for supplying heat at temperatures of over 100 deg.C thereto are buried particularly on one side 3a and a plurality of heat- withdrawing heat-exchange parts 5 for extracting the heat in storage are buried particularly on the other side 3b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat storage device suitable for use in floor heating systems and the like.

[0002]

2. Description of the Related Art Conventionally, as a floor heating device, a hot water system in which hot water (heat medium liquid) is passed through a rubber roll or the like for heating and an electric system in which heating is performed by an electric heater or a planar heater are known.

As the hot water system, for example, the actual Kaisho Sho 63-
As disclosed in Japanese Patent No. 184834, a floor is constructed by covering a rubber roll laid on a base surface with a self-leveling material, and hot water is passed through the rubber roll for heating. On the other hand, the electric method is, for example, as disclosed in Japanese Utility Model Laid-Open No. 5-52619, in which an electric heater or a planar heater laid on a foundation surface is covered with a self-leveling material to form a floor surface. The electric heater is supplied with electric power to perform heating.

[0004]

However, the above-mentioned conventional hot water method and electric method have the following drawbacks.

First, since energy is directly supplied from a fuel or a commercial power source in any of the systems, running costs associated with fuel costs or electricity charges increase.

Secondly, since energy is directly supplied from a fuel or a commercial power source in any of the methods, energy consumption is directly consumed and energy saving is poor.

[0007] The present invention has solved the problems existing in such conventional techniques, and in particular, it is an object of the present invention to provide a heat storage device capable of reducing running costs and energy saving in a floor heating device. .

[0008]

A heat storage device 1 according to the present invention
Accommodates the heat storage material 3 that stores heat at a temperature of 100 ° C. or higher in the heat storage space covered with the heat insulating material 2, and one side 3 of the heat storage material 3
The heat storage heat exchange section 4 for supplying the heat storage material 3 with a heat quantity due to a temperature of 100 ° C. or more is embedded in a, and the heat storage material 3 on the other side 3b takes out the heat quantity stored in the heat storage material 3 for heat collection. It is characterized in that the heat exchange section 5 is embedded.

In this case, one or more heat storage heat exchange pipes 4p are provided in the heat storage heat exchange section 4 according to an optimum embodiment.
Can be used to supply the heat medium Ls heated by the industrial waste heat H to the heat exchange pipes 4p. Further, a heater capable of supplying late-night power may be used for the heat storage heat exchange section 4. On the other hand, one or more heat exchange heat exchange pipes 5p ... Can be used in the heat exchange heat exchange section 5,
The heat exchange unit 5 for heat collection is connected to the floor heating device 6. On the other hand, a gas filling space R containing an inert gas G is provided above the heat storage space, and one or more heat transfer pipes or heat transfer holes 7 are provided between the heat storage heat exchange section 4 and the gas filling space R. …
And the heat exchange part 5 for heat collection in the gas filling space R.
May be arranged. In this case, the gas filling space R is connected to the gas pressure adjusting tank 8 or the gas pressure adjusting cylinder.

[0010]

According to the heat storage device 1 of the present invention, the heat storage space covered with the heat insulating material 2 accommodates the heat storage material 3 which stores heat at a temperature of 100 ° C. or higher. In addition, one side 3 of this heat storage material 3
Since one or two or more heat storage heat exchange pipes 4p (heat storage heat exchange section 4) for supplying the heat storage material 3 with a heat quantity due to a temperature of 100 ° C. or more are embedded in a, for example, industrial waste heat Heat medium Ls heated to 100 ° C. or higher by H
When supplied to the heat storage heat exchange pipes 4p, the heat amount of the heat medium Ls is stored in the heat storage material 3 by the heat exchange action of the heat storage heat exchange pipes 4p. As a result, the industrial waste heat H is reused without being discarded. On the other hand, a heater capable of supplying late-night power may be used for the heat storage heat exchange unit 4, and the heat quantity of the heater is directly stored in the heat storage material 3. Therefore,
You can make effective use of late-night electricity, which has a low electricity rate. The higher the temperature at which heat is stored, the higher the heat load value per unit volume and space saving.

On the other hand, on the other side 3b of the heat storage material 3, one or more heat exchange pipes 5p for heat extraction (heat exchange portion 5 for heat collection) for extracting the amount of heat stored in the heat storage material 3 are embedded. Since the heat exchange pipes 5p ...
, The heat medium Lw used in the floor heating device 6 is heated by the heat exchange action of the heat exchange heat exchange pipes 5p ... And the heated heat medium Lw is supplied to the floor heating device 6. Since the floor heating device 6 is usually used at 100 ° C. or lower, the supply time of the heat energy from the heat storage material 3 can be set to several times to 10 times or more of hot water.

On the other hand, a gas filling space R containing the inert gas G is provided above the heat storage space, and one or more heat transfer pipes or heat transfer pipes or heats are provided between the heat storage heat exchange section 4 and the gas filling space R. By arranging the transmission holes 7 in the vertical direction and arranging the heat-exchanging heat exchange section 5 in the gas filling space R, the amount of heat stored in the heat storage material 3 is efficiently stored in the gas filling space R and further for heat collection. The heat is transferred to the heat exchange section 5. The gas pressure in the gas filling space R, which depends on the heat storage temperature, is set in the gas pressure adjusting tank 8.
Alternatively, it is adjusted by a gas pressure adjusting cylinder.

[0013]

Next, preferred embodiments according to the present invention will be described in detail with reference to the drawings.

First, the structure of the heat storage device 1 according to this embodiment will be described with reference to FIGS. 1 and 2.

In FIG. 1, reference numeral 10 denotes a heat storage material case formed in a box shape by the heat insulating material 2.
Has a heat storage space hermetically sealed by. Further, inside the heat storage material case 10, a temperature of 100 ° C. or higher, that is, 300
A heat storage material 3 that stores heat at a high temperature such as ℃, 500 ℃, 800 ℃ is filled and housed.

As the heat storage material 3, heat storage materials such as ceramics, metals, liquids, etc. can be used. As the ceramic system, magnesium oxide, titanium oxide, ferric oxide, silicon oxide, zirconium oxide, aluminum, graphite, silicon, carbon, calcium oxide, chromium oxide, aluminum oxide, etc. can be used alone or in combination. Ceramics have the advantage of high chemical resistance and heat resistance. Note that the ceramic system also includes ores such as lime and feldspar, clay, and glass.

On the other hand, as the metal system, a refractory metal material such as titanium, tungsten, molybdenum, nickel, chromium, manganese, silicon, carbide, iron, copper, aluminum or ferrite is used directly or as an alloy. These sintered materials and liquid metals can be used. In the case of metal, it can be used as a metal piece, a metal ball, or a metal powder. Further, as the liquid, oil such as mineral oil, liquid metal or the like can be used.

On the other hand, one side 3a of the heat storage material 3, that is, the lower side, is embedded with a heat storage heat exchange section 4 for supplying the heat storage material 3 with a heat quantity at a temperature of 100 ° C. or more. As the heat storage heat exchange section 4, one or more heat storage heat exchange pipes 4p are used. In this case, one end of each heat storage heat exchange pipe 4p ... Embedded in the heat storage material 3 is the supply side and is connected to the supply line 12, while the other end is the return side and is connected to the return line 13. The supply line 12 and the return line 13 are connected to the heating unit 14, and the industrial waste heat H such as a waste incinerator and factory waste heat is supplied to the heating unit 14. With such a configuration, the heat medium (oil, air, liquid metal, etc.) Ls is heated to 100 ° C. or higher by the industrial waste heat H in the heating section 14, and passes through the supply line 12 to the heat storage heat exchange pipes 4p. While being supplied, it is returned to the heating unit 14 through the return line 13.

Further, on the other side 3b of the heat storage material 3, that is, on the upper side, a heat-exchanging heat exchange section 5 for taking out the amount of heat stored in the heat storage material 3 is embedded. As the heat exchange unit 5 for heat collection, one or more heat exchange pipes 5p for heat collection are used. In this case, each heat exchanging heat exchange pipe 5p embedded in the heat storage material 3 ...
One end is connected to the discharge line 15 and is connected to the discharge line 15, while the other end is connected to the supply line 16 and is connected to the supply line 16. Further, the discharge line 15 and the supply line 16 are connected to a floor heating heat exchanger in the floor heating device 6. With such a configuration, the heat medium (oil, air, liquid metal, etc.) Lw in each heat exchanging heat exchange pipe 5p ... The heat is supplied to the heat exchanger for floor heating in the device 6 and returned to the heat exchange pipes 5p for heat collection through the supply line 16. In this case, the heat medium Lw is once the floor heating device 6
In the floor heating heat exchanger, where heat is exchanged with a heat medium liquid such as water or an antifreeze liquid. Then, the heating medium liquid such as heated water or antifreezing liquid circulates on the main body side of the floor heating device 6.

When the whole heat storage material 3 is made of a solid material, heat conduction is carried out by the inherent molecular motion of physical properties, but when the heat storage material 3 is a collection of granular materials or a powder material. An inert gas such as argon gas may be enclosed as a heat conductor. In this case, in the heat storage material case 10,
It is desirable to connect a gas pressure adjusting tank 8 as shown in FIG. When the heat storage material 3 is a liquid, the inside of the heat storage material case 10 is evacuated or negative pressure or a pressure adjusting tank is connected.

Next, the function and usage of the heat storage device 1 according to this embodiment will be described with reference to the drawings.

First, in the heating section 14, the heat medium Ls heated to 100 ° C. or higher by the industrial waste heat H is supplied to the heat storage heat exchange pipes 4p ... Through the supply line 12. Then, the amount of heat of the heat medium Ls is stored in the heat storage material 3 by the heat exchange action of each heat storage heat exchange pipe 4p. Further, the heat medium Ls in each heat storage pipe 4p for heat storage is returned to the heating unit 14 through the return line 13 and again at 100 ° C.
The circulation cycle of heating above is repeated.

On the other hand, a heater (power heater, infrared heater, etc.) capable of supplying late-night power can be used as the heat storage heat exchange section 4. In this case, the heat quantity of the heater directly stores heat in the heat storage material 3. To be done.

On the other hand, the amount of heat stored in the heat storage material 3 is taken out as follows. That is, each heat exchange pipe 5p for heat collection ...
The heat medium Lw therein is heated by the amount of heat stored in the heat storage material 3, and is supplied to the floor heating device 6 via the discharge line 15. In the floor heating device 6, floor heating is performed by the heated heat medium Lw, and the heat medium Lw on the floor heating device 6 side is returned to the heat exchange pipes 5p, ... The circulation cycle of heating by the heat storage material 3 is repeated.

Therefore, the industrial waste heat H is reused without being discarded. In addition, late-night electricity, which has a low electricity rate, can be effectively used.

On the other hand, FIG. 3 shows a modified embodiment. In the modified embodiment, a gas filling space R containing an inert gas G such as argon gas used as a heat conductor is provided above the heat storage space, and a space between the heat storage heat exchange section 4 and the gas filling space R is provided. Alternatively, two or more heat transfer pipes 7 are arranged vertically, and the heat exchange pipes 5p for heat collection are arranged in the gas filling space R. In this case, a simple heat transfer hole may be provided instead of the heat transfer pipe. Also, the gas filling space R
Is communicatively connected to the gas pressure adjusting tank 8. A gas pressure adjusting cylinder or the like may be used instead of the gas pressure adjusting tank 8.

As a result, the amount of heat stored in the heat storage material 3 is efficiently transmitted to the gas filling space R and further to the heat exchange pipes 5p ... The gas pressure in the gas filling space R, which depends on the heat storage temperature, is adjusted by the gas pressure adjusting tank 8.

Further, the heat storage device 1 according to the present invention is installed as shown in FIG. That is, the heat storage device 1 is covered with the pearlite-containing special concrete 21, and the heat storage unit 22 is further covered with the heat storage unit 20 to form the heat storage unit 20. In this case, the length of one side of the single heat storage unit 20 is selected to be about 1 meter, and a plurality of heat storage units 2 are provided as necessary.
0 ... are connected and used.

The embodiment has been described in detail above.
The present invention is not limited to such an embodiment.
For example, pipes, heaters, and the like to be embedded in the heat storage material may be embedded in a fixed type or may be embedded in a detachable (exchange) type. Further, although the circulation type is exemplified for the supply of the heat amount to the heat storage material and the extraction of the heat amount from the heat storage material, a waste heat method or a heat pipe method may be adopted. In the case of the heat pipe system, a heat pipe is used instead of the heat exchange pipe. In addition, the detailed configuration, shape, material, quantity, etc. can be arbitrarily changed without departing from the scope of the present invention.

[0030]

As described above, the heat storage device according to the present invention is
A heat storage material that stores heat at a temperature of 100 ° C. or higher is housed in a heat storage space covered with a heat insulating material, and the temperature is 1 at one side of the heat storage material.
Since a heat storage heat exchange section that supplies the heat quantity due to 00 ° C or more to the heat storage material is embedded, and on the other side of the heat storage material, a heat extraction heat exchange section that extracts the heat quantity stored in the heat storage material is embedded. It has the following remarkable effects.

Since the industrial waste heat can be reused for the floor heating device or the like, it is excellent in energy saving.

Since the late-night electric power can be effectively used, the running cost in the floor heating device or the like can be reduced.

[Brief description of drawings]

FIG. 1 is a principle configuration diagram including a cross section of a heat storage device according to the present invention,

FIG. 2 is a perspective view clearly showing an arrangement state of heat exchange units in the heat storage device,

FIG. 3 is a principle configuration diagram including a cross section of a heat storage device according to a modified embodiment of the present invention;

FIG. 4 is an external perspective view of the heat storage device,

[Explanation of symbols]

 1 Heat Storage Device 2 Heat Insulation Material 3 Heat Storage Material 3a One Side of Heat Storage Material 3b Other Side of Heat Storage Material 4 Heat Storage Heat Exchange Section 4p ... Heat Storage Heat Exchange Pipe 5 Heat Exchange Heat Exchange Section 5p… Heat Exchange Pipe 6 Floor heating device 7 ... Heat transfer pipe or heat transfer hole 8 Tank for adjusting gas pressure H Industrial waste heat Ls Heat medium G Inert gas R Gas filling space

Claims (7)

[Claims] 1. A heat storage material that stores heat at a temperature of 100 ° C. or higher is housed in a heat storage space covered with a heat insulating material, and one side of the heat storage material is supplied with a heat amount at a temperature of 100 ° C. or higher to the heat storage material. A heat storage device, wherein a heat storage heat exchange section is embedded, and a heat extraction heat exchange section that extracts the amount of heat stored in the heat storage material is embedded on the other side of the heat storage material. 2. The heat storage heat exchange section uses one or more heat storage heat exchange pipes, and is configured to be capable of supplying a heat medium heated by industrial waste heat to the heat storage heat exchange pipes. The heat storage device according to claim 1, wherein: 3. The heat storage device according to claim 1, wherein the heat storage heat exchange section uses a heater capable of supplying late-night power. 4. The heat storage device according to claim 1, wherein the heat exchange section for heat collection uses one or more heat exchange pipes for heat collection. 5. The heat storage device according to claim 1, wherein the heat exchanging heat exchange section is connected to a floor heating device. 6. A gas filling space containing an inert gas is provided above the heat storage space, and one or more heat transfer pipes or heat transfer holes are vertically provided between the heat storage heat exchange section and the gas filling space. The heat storage device according to claim 1, wherein the heat storage device is disposed in the gas storage space, and the heat exchange unit for heat collection is disposed in the gas filling space. 7. The heat storage device according to claim 6, further comprising a gas pressure adjusting tank or a gas pressure adjusting cylinder which is connected to the gas filling space.