JP2010071633A - Heat storage body, heat storage unit and heat storage system - Google Patents

Abstract

[PROBLEMS] To provide a heat storage body that can be used in an existing hot water tank and that can greatly improve its capacity, a compact heat storage device that can use hot water even on rainy days, and a heat storage system. I will provide a.
A latent heat storage material having a configuration in which a gas is sealed in an appropriately shaped sealed container filled with a latent heat storage material and gas, and the specific gravity of the entire sealed container is 1 or less. And / or a heat storage body in which the gas filling amount is adjusted, and the heat storage body is filled in a hot water storage tank in which hot water is stored, and a plurality of heat storage bodies are accumulated and filled in the upper part of the hot water. Connected to the upper and upper parts of the solar heat collector, and the lower and lower parts of the solar heat collector with piping so that hot water or fluid circulates and heat is stored in the heat accumulator. Thermal storage system.
It is possible to provide a heat storage system capable of efficiently storing hot water or fluid from a solar collector.
[Selection] Figure 3

Description

  The present invention relates to a heat accumulator used for keeping warm water obtained by a solar collector or the like for a long period of time, and a heat accumulator, and more specifically, by a solar collector or the like. The present invention relates to a heat storage body used in a hot water storage tank for storing the obtained hot water while keeping it warm for a long time, a heat storage device using the heat storage body, and a heat storage system. The present invention uses, for example, a heat accumulator that enables warm water or fluid obtained by a solar water heater to be stored at a low cost for a long time using an existing hot water tank, and the heat accumulator. A heat storage device and a heat storage system are provided.

  In recent years, solar water heaters have been reconsidered due to energy issues such as environmental problems and soaring crude oil prices. Compared to crude oil, solar energy is free and inexhaustible. However, solar energy is an intermittent energy source, and there is a problem that it is difficult to use except during the daytime when sunlight is obtained. Therefore, in order to be able to use hot water at night or on rainy days, a hot water storage tank that uses sunlight to keep warm water stored during the day is necessary. At best, the hot water storage tank can only store the hot water obtained during the day until the night.

  Therefore, in order to make it possible to use hot water even on a rainy day, an expensive heat accumulator having a heat insulating effect having a heat insulating layer of vacuum or reduced pressure is required. Further, in the conventional method, a sensible heat utilization type heat accumulator utilizing a temperature change of water, rock, concrete, soil or the like has been used as a heat accumulating material. However, in this conventional method, since the amount of heat that can be accommodated in a certain volume is small, there is a problem that there is a risk of burns or the like because it is necessary to store heat at a high temperature when trying to reduce the size of the heat accumulator.

  Recently, due to the development of new heat storage materials, the use of phase change heat that accompanies the melting and solidification of substances (heat storage materials), which has a high heat storage capacity, has been used. In addition, an expensive latent heat utilization type regenerator called a shell tube or a capsule type and a rugged and expensive latent heat storage cell are required. In these methods, a large number of electric tubes and sturdy capsules must be manufactured, installed, and installed, so the manufacturing cost of heat transfer tubes and capsules, which account for the total cost of the heat accumulator, becomes very large, and heat storage The vessel was very expensive.

  As a prior art related to a heat accumulator, for example, as a heat accumulator that can easily cope with a request for changing the required volume without increasing the cost only by increasing or decreasing the number of tank components stacked, In a heat accumulator having a heat insulating layer on the outer peripheral portion, a heat accumulator (Patent Document 1) formed by laminating a plurality of tank components of plate members having the same cross-sectional shape with the liquid storage portion and the heat insulating layer. Proposed.

  In addition, as another prior art, it is possible to carry out heat insulation under reduced pressure very easily, and an assembly method of an automobile regenerator that can be assembled without difficulty in an automobile regenerator production line and is particularly suitable for mass production (patent document) 2 and 3) have been proposed. In addition, as another prior art, a heat storage device (Patent Document 4) combining a heat storage material utilizing latent heat and a heat storage material utilizing sensible heat (Patent Document 4), a heat storage device, in particular, a latent heat storage device, wherein heat isolation, at least one A collection space for a heat transfer medium hydrodynamically coupled to an inlet and outlet and a heat storage core surrounded by a housing, with a flow path (tube) disposed therein, with a space between the flow paths; A heat accumulator (Patent Document 5) in which a phase transformation material exists is proposed.

  In addition, as another prior art, in particular, a heat storage device (Patent Document 6) suitable for storing heat at midnight power etc. and effectively using it at any time, and automatic mass production should be configured without any problems. A latent heat storage cell (Patent Document 7) having a rectangular parallelepiped shape manufactured from a thin metal plate that can provide a latent heat storage cell that can withstand a series of stresses over a long period of time has been proposed. . However, a new heat storage body that can be applied to existing hot water storage tanks and that can keep warm water obtained from solar collectors, etc., at low cost, safely and with high performance for a long time has been developed. There was a strong demand for development.

JP 2008-51445 A Japanese Patent Laid-Open No. 07-12480 WO08-26532 A1 Japanese Patent Laid-Open No. 56-10695 JP-T-2002-504219 Japanese Patent Laid-Open No. 4-186058 Japanese Patent Application Laid-Open No. 07-1163

  Under such circumstances, the present inventor, in view of the above-mentioned prior art, can be applied to existing hot water tanks at a low cost, safe, high performance, and greatly improve its ability. Research has been conducted with the goal of developing a heat storage body that can be used and a heat storage device that is compact and that can use hot water even on rainy days. As a result, the present inventor filled hot water storage tanks with hot water storage tanks filled with a latent heat storage material and gas and filled with a heat storage body adjusted to have a specific gravity of 1 or less even on rainy days. The inventors have found that the intended purpose of enabling the use of can be achieved, and have further researched to complete the present invention.

  An object of the present invention is to provide a new type heat accumulator using latent heat of fusion such as polyethylene glycol or polyethylene oxide. Another object of the present invention is to provide a regenerator in which the regenerator is filled in a hot water tank so that it can be used by floating in hot water. Furthermore, the present invention aims to provide a heat storage system that uses these heat accumulators and heat accumulators to store hot water obtained by a solar heat collector while keeping it warm for a long time. It is.

The present invention for solving the above-described problems comprises the following technical means.
(1) A latent heat storage material having a configuration filled with a latent heat storage material and gas in an appropriately shaped sealed container capable of sealing gas, and the latent heat storage material and the specific gravity of the sealed container as a whole are 1 or less. A heat storage body characterized in that a gas filling amount is adjusted.
(2) The heat storage element according to (1), wherein the specific gravity is adjusted to a range of 1 to 0.9.
(3) The latent heat storage material is one or a mixture of two or more selected from polyethylene glycol, polyethylene oxide, paraffin wax, higher alcohol, higher fatty acid or a salt thereof, as described in (1) or (2) above. Heat storage body.
(4) The heat storage body according to any one of (1) to (3), wherein an antioxidant and / or a nucleating agent is added to the latent heat storage material.
(5) The antioxidant is one or a mixture of two or more selected from phenol, cresol, hydroquinone, catechol, anisole, xylenol, t-butyl-p-cresol, N-nitrosoaniline, and N-nitrosamine. The heat storage body according to (4).
(6) The heat storage body according to (4), wherein the nucleating agent is a stone grain, a metal grain, a plastic pellet, a ceramic pellet, or a clay molded body.
(7) The heat storage body according to any one of (1) to (6), wherein the heat storage body has a size of 1 cubic cm to 100 cubic cm.
(8) The heat storage body according to any one of (1) to (7) has a configuration filled in a hot water storage tank in which hot water is stored, and a plurality of heat storage bodies are accumulated and filled in the upper part of the hot water. A heat accumulator characterized by being.
(9) The regenerator described in (8) above is connected to the upper and upper parts of the solar heat collector, and the lower and lower parts thereof by piping, and hot water or fluid circulates to store heat in the regenerator. A heat storage system characterized by doing so.

Next, the present invention will be described in more detail.
The present invention is a heat storage body using a latent heat storage material, and has a configuration in which a latent heat storage material and gas are filled in a sealed container of an appropriate shape capable of sealing gas, and the specific gravity of the entire sealed container The filling amount of the latent heat storage material and / or gas is adjusted so that is 1 or less. Further, the present invention is a heat accumulator using the above heat accumulator, having a configuration filled in a hot water storage tank that stores hot water, and a plurality of heat accumulators are accumulated and filled in the upper part of the hot water. It is characterized by being.

  Furthermore, the present invention is a heat storage system using the above heat accumulator, wherein hot water or fluid is circulated by connecting the above heat accumulator and the upper and upper portions of the solar collector and their lower and lower portions with piping. Thus, heat is stored in the regenerator.

  Examples of the latent heat storage material used in the present invention include a latent heat utilization type heat storage material utilizing absorption and release of heat associated with a melting-solidification phase transition. And, as this latent heat utilization type heat storage material, there are inorganic latent heat storage materials such as inorganic hydrate salts and organic latent heat storage materials such as organic polymers. From the viewpoint of corrosivity and specific gravity, the organic latent heat storage material Are illustrated as preferred.

  Among the organic latent heat storage materials, for example, polyethylene glycol, polyethylene oxide, polyvinyl alcohol, paraffin wax, higher alcohols such as lauryl alcohol and stearyl alcohol, higher fatty acids such as lauric acid and stearic acid, and potassium laurate and stearin. Sodium acid etc. and its salt are illustrated as a suitable thing from the point of cost, the availability, and specific gravity.

  In the present invention, it is possible to use various organic latent heat storage materials, but they may be used singly or a mixture of a plurality of materials, for example, those having a high melting point and those having a low melting point. It is also possible to mix and use. For example, heat conductivity (heat medium oil, manufactured by Nippon Oil Corporation), THERM S (heat medium oil, manufactured by Nippon Steel Chemical Co., Ltd.), Karalia (heat medium oil, manufactured by Exxon), silicon oil, etc. In order to increase fluidity, it can be mixed with various fluids and used as a slurry.

  The organic latent heat storage material can be used as a heat storage material having a melting point suitable for use and a heat storage amount by mixing a plurality of organic latent heat storage materials or selecting one having an appropriate molecular weight. In addition, when mixed with fluid and used as a slurry, even when heated to store heat, fluid is present, so heat transfer is performed efficiently, melting easily, and heat storage is easily obtained. .

  In the present invention, an antioxidant which is a radical scavenger can be used. By using an antioxidant, it is possible to prevent oxidative degradation of the organic latent heat storage material. When the organic latent heat storage material is used in the air, it is oxidized, and as a result, no melting-solidification occurs. Therefore, an antioxidant is used to prevent this and enable a stable heat storage operation.

  Examples of the antioxidant include various substances, among which, for example, phenol, cresol, hydroquinone, catechol, anisole, xylenol, t-butyl-p-cresol, N-nitrosoaniline, N-nitrosamine, phenylenediamine Phenols such as ethylenediamine, amines, and derivatives thereof are exemplified as preferable examples from the viewpoint of cost and availability.

  When using an antioxidant, after adding these substances to the organic latent heat storage material, it can be used by stirring and mixing, or by heating and melting the organic latent heat storage material, These substances can be used by dissolving and mixing them. Moreover, an antioxidant can be mixed with a fluid and added to a slurry-like organic latent heat storage material for use.

  These radical scavengers may be used alone or in combination of two or more. And the addition amount of the antioxidant with respect to an organic latent heat storage material is 0.001 to 20%, and 0.01 to 5% is especially preferable. However, depending on the usage period of the heat storage body, when it is long, it can be appropriately increased or decreased, for example, by increasing the amount of addition.

  Usually, in order to store a heat storage material, even if it is heated, it does not readily melt, and even if it cools, it does not readily solidify. Therefore, in the present invention, a nucleating agent is used. The nucleating agent used in the present invention is used for the heat storage material to stably cause the heat storage operation of melting and solidification, and as such, it is easy to absorb energy, and far infrared rays are used. Radiant ceramic pellets are preferred.

  Examples of the nucleating agent include stone particles, metal particles, plastic pellets, ceramic pellets, clay molded bodies, ceramics containing a small amount of radioactive material, magnets, tourmaline, etc. Etc. may be included.

  The shape of the pellet is most preferably spherical, and the size of the pellet is preferably 0.5 mm to 30 mm in diameter, and most preferably in the range of 1 mm to 20 mm in diameter. If it is smaller than that, the function as a nucleating agent will not be fulfilled, and if it is larger than that, the ratio of the heat storage material in the heat storage body becomes small, and the amount of heat storage becomes too small. As for the content rate of the nucleating agent with respect to a thermal storage body, 1-20 pieces per 100 cubic cm of thermal storage bodies are preferable.

  The heat storage body used in the present invention is filled with a latent heat storage material and gas in a sealed container of an appropriate form capable of sealing gas, and the latent heat storage is performed so that the specific gravity of the entire sealed container becomes 1 or less. The material and / or gas filling amount is adjusted. As the sealed container used at this time, a molded container or a bag is used. The material is preferably a material that does not transmit water and water vapor and does not transmit oxygen.

  When water and water vapor are transmitted through the material of the sealed container, the latent heat storage material becomes an aqueous solution, the heat storage temperature changes, and the heat storage amount also decreases. Moreover, if a molded container or a bag permeates oxygen, the latent heat storage material is oxidized and deteriorated, and the heat storage capacity is rapidly lost. Further, from the viewpoint of cost, a thin and strong one is preferable.

  As the material of the molded container or bag of such a closed container, ethylene-vinyl alcohol copolymer resin, polyvinylidene chloride resin, metaxylene diamine-nylon, polyethylene naphthalate, polyvinyl alcohol coat resin, silica vapor deposition resin, alumina vapor deposition Examples thereof include resin and diamond-like carbon vapor deposition resin.

  The heat storage body used in the present invention is manufactured by melting the latent heat storage material in such a sealed container and filling it with gas, and adjusting the specific gravity to 1 or less. As the gas at this time, an inert gas such as argon or nitrogen is preferable to air because it does not cause oxidative deterioration of the latent heat storage material. If argon or nitrogen is used instead of air, the amount of antioxidant added to the latent heat storage material can be reduced. Thus, the heat storage body used in the present invention is produced by filling the sealed container with the latent heat storage material together with the gas and adjusting the specific gravity to 1 or less.

  By adjusting the specific gravity of the heat storage body to 1 or less, the heat storage body floats on water, and therefore, when the hot water tank is filled, almost no pressure is applied. Therefore, the heat storage body and the heat storage device can be easily manufactured at low cost. At this time, if the specific gravity of the heat storage body is too small, the amount of heat storage becomes small, and if the specific gravity of the heat storage body is too larger than 1, the heat storage body sinks to the bottom and is stacked on top of it, and pressure is applied to the heat storage body. It will take. Therefore, the specific gravity of the heat storage body is particularly preferably in the range of 1 to 0.9, and it is preferable that the heat storage body is accumulated and filled in the upper part of the hot water in the hot water tank.

  The shape of the heat storage body used in the present invention is, for example, spherical, plate-shaped, cylindrical, prismatic, pyramidal, conical, rugby ball-shaped, tubular, rod-shaped, disk-shaped, sock-shaped, glove-shaped, belt-shaped, shoe There are various types such as a shape, and it is appropriately selected and used depending on the usage form, but a spherical heat storage body is particularly preferably used.

  The size of the heat storage body used in the present invention is preferably about 1 cubic cm to 100 cubic cm. If it is smaller than this, the ratio of the heat storage material in the heat storage body will be small, and the amount of heat storage will be too small, and if it is larger than this, it will be difficult to fill the hot water tank or the heat exchange rate will be slow. It becomes difficult to cause melting and solidification. Several kinds of sizes and shapes may be mixed and used. Further, different heat storage materials may be filled in the heat storage body. Thereby, a wide heat storage temperature range can be provided.

  The heat storage body of the present invention is immersed in hot water or a fluid as a heat medium, and is also stored by heating with a heater, but it can also be immersed in cold water or stored cold using a refrigerator, Moreover, it can also be used by heating and storing in a microwave oven. The heat storage body of the present invention can be easily manufactured by filling a hot water storage tank with gas, has a latent heat of fusion of several tens of calories per gram, and the heat storage density of the heat storage body is water. Since it is much larger than the above, it is possible to greatly improve the heat storage capacity of the hot water tank by filling the existing hot water tank.

  The heat storage system of the present invention is produced by connecting the thus obtained heat accumulator and a solar heat collector. At that time, using piping, the upper part of the solar collector and the upper part of the heat accumulator are connected, and the lower part of the heat accumulator and the lower part of the solar collector are connected. Without using the hot water or fluid stored at the top of the solar collector, pours into the top of the regenerator, while the cold water or fluid at the bottom of the regenerator is Then, it is poured into the solar collector, and these are circulated efficiently, and the heat accumulator is stored. As a fluid that circulates between the solar collector and the heat accumulator through a pipe, a fluid made of an appropriate heat medium can be used. In this case, the heat accumulator uses a method of storing heat via the fluid.

  And the hot water or fluid from the solar collector enters from the upper part, and through the hot water or fluid, the heat storage body in the uppermost layer of the hot water storage tank of the heat accumulator is heated to the highest temperature, Since the specific gravity is lightest due to the expansion, it accumulates side by side in the uppermost layer. For this reason, the higher the temperature in the regenerator, the higher the temperature, and a stable temperature layer is formed. Therefore, heat dissipation due to mixing between the temperature layers is suppressed, thereby increasing the heat storage efficiency and reducing the temperature. It becomes difficult and can keep warm for a long time.

  In the heat storage system of the present invention, as shown in FIG. 3, the upper part and the upper part of the heat accumulator and the solar collector, and the lower part and the lower part thereof are connected by piping, and hot water circulates to heat the heat accumulator. In this case, instead of hot water, an appropriate fluid can be used to circulate the fluid so that heat can be stored in the heat accumulator via the fluid.

  In the heat storage system of the present invention, it is preferable that the heat storage device is positioned higher than the solar heat collector. As a result, it is possible to construct and provide a heat storage system with high energy storage efficiency at low energy and cost. In addition, when taking out warm water from a heat storage device, if it takes out from the upper part of a heat storage device, high temperature warm water will be obtained, and if it takes out from the lower part, low temperature warm water will be obtained. Moreover, after taking out warm water, if water is poured into a thermal accumulator, water will be warmed and it can be made warm water.

The present invention has the following effects.
(1) It is possible to provide a heat storage body that can retain hot water obtained by a solar heat collector or the like for a long time and store it, a heat storage apparatus using the heat storage body, and a heat storage system.
(2) Since the heat storage body can be used by floating on the hot water in the hot water tank, no pressure is applied to the heat storage body, and the heat storage body and the heat storage device can be easily manufactured at low cost.
(3) As a latent heat storage material, it does not have corrosivity, is inexpensive, and by mixing a plurality of materials, a melting point and a heat storage amount according to the purpose can be obtained.
(4) By preventing oxidation deterioration of the latent heat storage material with the antioxidant, a stable heat storage operation of melting and solidification can be obtained.
(5) A heat accumulator that is compact and has a large heat storage density can be manufactured.
(6) The heat storage body of the present invention can be applied to existing hot water storage tanks, and can greatly improve its capability and can produce a high-performance heat storage device at low cost.
(7) Hot water obtained by a solar heat collector or the like can be efficiently stored in a heat accumulator with energy saving and low cost.

  EXAMPLES Next, although this invention is demonstrated concretely based on an Example, this invention is not limited at all by the following Examples.

  In this embodiment, polyethylene glycol is used as an organic latent heat storage material, silicon oil is mixed therein, 5% 4-t-butyl-phenol is added as an antioxidant, and ceramic pellets having a diameter of 5 mm are further added. Was added as a nucleating agent to prepare a latent heat storage material. Next, the latent heat storage material is melted and filled with nitrogen gas in a sealed container made of an ethylene-vinyl alcohol copolymer formed into a spherical shape having a size of 5 cubic cm, and the specific gravity is adjusted to 0.95. Thus, a sealed heat storage body was produced.

  FIG. 1 shows a conceptual diagram of a heat storage body according to this embodiment in which a latent heat storage body 1 is filled with a gas 3 in a sealed container 2 and the specific gravity is adjusted to 0.95, which is 1 or less. . The heat storage body was filled in an existing hot water storage tank to produce a heat storage device. FIG. 2 shows a conceptual diagram of a heat accumulator according to the present invention in which a heat accumulator 6 is filled in a hot water tank and air 5 and hot water 7 are stored.

  Further, in FIG. 3, the solar collector 7 and the upper and upper parts of the heat accumulator 8 and the lower and lower parts thereof are connected by pipes 9 and 10, and hot water circulates through these pipes. The heat storage system according to the present invention is configured such that the heat collected by the solar heat collector 7 can be efficiently stored in the heat accumulator 8 with energy saving and low cost.

  In this embodiment, polyethylene oxide is used as the organic latent heat storage material, and High Therm (manufactured by Shin Nippon Oil Co., Ltd.) is mixed as the heat medium oil, and 3,5 di-t as the antioxidant. A latent heat storage material was prepared by adding 5% of butyl-p-cresol and further adding ceramic pellets having a diameter of 10 mm as a nucleating agent.

  Next, melt the latent heat storage material into a sealed container made of polyvinyl alcohol-coated polyethylene terephthalate formed into a spherical shape with a size of 10 cubic centimeters, fill it with nitrogen gas, and adjust the specific gravity to 0.9. The heat storage body was manufactured by sealing, and the latent heat storage body was filled with gas in a sealed container and adjusted to 0.9 with a specific gravity of 1 or less.

  The heat storage body according to the present invention in which the heat storage body was filled into an existing hot water storage tank, the heat storage body was filled into the hot water storage tank, and hot water was stored was produced. In addition, the solar collector and the upper and upper parts of the regenerator, and the lower and lower parts of them are connected by piping, and hot water circulates in the heat accumulator and the heat collected by the solar collector saves energy. Thus, a heat storage system according to the present invention configured to be efficiently stored at low cost was produced.

  In this example, paraffin wax is used as the organic latent heat storage material, and therms (manufactured by Nippon Steel Chemical Co., Ltd.) is mixed as the heat medium oil, and 3% of catechol is added as an antioxidant, Furthermore, a plastic pellet having a diameter of 15 mm was added as a nucleating agent to prepare a latent heat storage material.

  Next, a polyethylene naphthalate sealed container formed into a spherical shape with a size of 20 cubic cm is melted with the latent heat storage material and filled with nitrogen gas, and the specific gravity is adjusted to 0.97 and sealed. A heat storage body was produced. The latent heat storage body was filled with gas in a sealed container, and a heat storage body adjusted to 0.97 having a specific gravity of 1 or less was obtained.

  The above-mentioned heat storage body was filled in an existing hot water storage tank, and the heat storage body was filled in the hot water storage tank so as to store hot water, thereby producing a heat storage device. In addition, the solar collector and the upper and upper parts of the regenerator, and the lower and lower parts of them are connected by piping, and hot water circulates in the heat accumulator and the heat collected by the solar collector saves energy. Thus, a heat storage system according to the present invention configured to be efficiently stored at low cost was produced.

  In this example, lauryl alcohol is used as the organic latent heat storage material, and caloria (manufactured by Exxon) is mixed as the heat transfer oil, 4% of xylenol is added as the antioxidant, and the diameter is further increased. A latent heat storage material was prepared by adding 20 mm metal particles as a nucleating agent.

  Next, in a sealed container made of silica-deposited polyethylene terephthalate formed into a spherical shape with a size of 100 cubic cm, the latent heat storage material is melted and filled with nitrogen gas, and the specific gravity is adjusted to 0.93, A sealed heat storage was produced. The latent heat storage body was filled with gas in a sealed container, and a heat storage body adjusted to 0.93 having a specific gravity of 1 or less was obtained.

  The above-mentioned heat storage body was filled in an existing hot water storage tank, and the heat storage body was filled in the hot water storage tank so as to store hot water, thereby producing a heat storage device. In addition, the solar collector and the upper and upper parts of the regenerator, and the lower and lower parts of them are connected by piping, and hot water circulates in the heat accumulator and the heat collected by the solar collector saves energy. Thus, a heat storage system according to the present invention configured to be efficiently stored at low cost was produced.

  In this embodiment, lauric acid is used as an organic latent heat storage material, silicon oil is mixed therein, 4% of N-nitrosamine is added as an antioxidant, and clay molded pellets having a diameter of 1 mm are added as nucleating agents. In addition, a latent heat storage material was prepared.

  Next, in a sealed container made of alumina-deposited polyethylene terephthalate formed into a spherical shape with a size of 10 cubic cm, the latent heat storage material is melted and filled with nitrogen gas, and the specific gravity is adjusted to 0.96. A sealed heat storage was produced. The latent heat storage body was filled with gas in a sealed container, and a heat storage body adjusted to 0.96 having a specific gravity of 1 or less was obtained.

  The above-mentioned heat storage body was filled in an existing hot water storage tank, and the heat storage body was accumulated and filled in the hot water storage tank so that hot water was stored. As a result, it was possible to extend the heat storage time, that is, the hot water holding time by 3 to 4 times compared to the case of using only hot water.

  The solar collector and the upper and upper parts of the regenerator and their lower and lower parts are connected by piping, and the hot water circulates in the regenerator and the heat collected by the solar collector is energy-saving, low A heat storage system according to the present invention configured to be efficiently stored at low cost was produced.

  As described above in detail, the present invention relates to a heat accumulator, a heat accumulator, and a heat accumulator system, and according to the present invention, a heat accumulator that can retain hot water obtained by a solar collector or the like for a long time and store it. , It is possible to provide a heat storage device and a heat storage system using the same. The present invention is a low-cost, safe, high-performance, and applicable to existing hot water storage tanks, and can greatly improve its capacity. It is possible to provide a heat storage system capable of efficiently storing hot water or fluid from a heat storage device having a high heat storage capacity, a solar collector, or the like that can use hot water. INDUSTRIAL APPLICABILITY The present invention is useful for providing a new heat storage body, a heat storage apparatus using the heat storage body, and a heat storage system that can greatly promote and spread the use of solar energy that is inexhaustible and pollution-free. .

The sectional view of the heat storage object by the present invention is shown. 1 shows a cross-sectional view of a regenerator according to the present invention. 1 shows a perspective view of a heat storage system according to the present invention. FIG.

Claims (9)

  A latent heat storage material and / or gas having a configuration filled with a latent heat storage material and gas in a sealed container of an appropriate shape capable of sealing gas so that the specific gravity of the entire sealed container is 1 or less. The heat storage body characterized by the filling amount of being adjusted.   The heat storage body according to claim 1, wherein the specific gravity is adjusted to a range of 1 to 0.9.   The heat storage body according to claim 1 or 2, wherein the latent heat storage material is one or a mixture of two or more selected from polyethylene glycol, polyethylene oxide, paraffin wax, higher alcohol, higher fatty acid or a salt thereof.   The heat storage body according to any one of claims 1 to 3, wherein an antioxidant and / or a nucleating agent is added to the latent heat storage material.   The antioxidant is one or a mixture of two or more selected from phenol, cresol, hydroquinone, catechol, anisole, xylenol, t-butyl-p-cresol, N-nitrosoaniline, N-nitrosamine. 4. The heat storage body according to 4.   The heat storage body according to claim 4, wherein the nucleating agent is a stone grain, a metal grain, a plastic pellet, a ceramic pellet, or a clay molded body.   The heat storage body according to any one of claims 1 to 6, wherein a size of the heat storage body is 1 cubic cm to 100 cubic cm.   The heat storage body according to any one of claims 1 to 7 has a configuration filled in a hot water storage tank in which hot water is stored, and a plurality of heat storage bodies are accumulated and filled in an upper part of the hot water. Regenerator.   The heat accumulator according to claim 8, the upper and upper parts of the solar collector, and the lower and lower parts thereof are connected by piping so that hot water or fluid circulates and heat is stored in the accumulator. Thermal storage system characterized by

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