JPH0510534A - Heat accumulating heating panel - Google Patents

Abstract

PURPOSE:To reduce the costs and running cost for floor heating by a method wherein a pipe through which a heating medium, such as hot water, is circulated is incorporated at the interior, and a specified heat accumulating material is positioned adjacently to the pipe for integral formation. CONSTITUTION:A pipe 2 for circulating a heating medium formed of, for example, a crosslinked polyethylene pipe is arranged in a given shape. A substance prepared such that 100 pts.wt. paraffin and 5-30 pts.wt. hydrocarbon organic high molecules are mixed together by a mechanical means is cast to produce a heat accumulating member 3, and a heat accumulation type heating panel is provided. Since the heat accumulation type heating panel is capable of accumulating heat through circulation of hot water, produced by a water heater by utilizing, for example, a midnight power, through a pipe, a running cost is sharply reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat storage type heating panel.

[0002]

2. Description of the Related Art In recent years, floor heating has come to be used in houses, offices and other buildings, and hot water type floor heating and electric floor heating have been proposed as methods for floor heating. ..

The hot water type floor heating lays a pipe made of metal or synthetic resin under the floor and circulates hot water through this pipe. At present, gas is usually used as an energy source for obtaining hot water. , Fossil fuels such as petroleum are used. Although these fuels are relatively cheap,
Even so, reducing the running cost is a major issue for general dissemination.

Electric floor heating has advantages that energy is clean and handling is very simple, and that there is no piping trouble such as water leakage as in the hot water type and long life. However, there is a big drawback that the running cost is high. Recently, in order to reduce the running cost of electric floor heating, heat storage type electric floor heating that uses heat storage by midnight power has been proposed, but this method will increase the initial cost considerably, so it is still widely used. The current situation is that it has not yet been completed.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a heating panel capable of reducing various costs such as floor heating or wall heating.

[0006]

As a result of various studies to achieve the above-mentioned object, the inventors of the present invention have built a pipe into which a heat medium such as hot water is circulated, and put a specific heat storage material in the pipe. It has been found that the above object can be achieved when a heat storage type heating panel is provided adjacent to and integrated with each other.

That is, according to the present invention, a heat medium circulating pipe, 100 parts by weight of paraffins and a hydrocarbon-based organic polymer 5 are used.
The heat storage material part obtained by mixing about 30 parts by weight by mechanical means relates to the heat storage heating panel in which the heat storage material part is incorporated so as to be able to store heat by heat from the pipe.

Since the heat storage type heating panel of the present invention can circulate hot water obtained by the water heater in the pipe to store heat by using, for example, late-night power, running cost is greatly reduced. In particular, in a large-scale system for business use, industrial use, etc., the heat storage adjustment power can be used, so that the effect of cost reduction becomes even greater. The above advantages of the present invention can be obtained even when a heat pump system is used, and in this system, warm air is used as a medium to be circulated in addition to hot water. Further, since the heat storage type heating panel of the present invention is formed into a panel, it is easy to perform on-site construction at the time of construction, so that there is an advantage that the construction cost can be reduced.

The present invention will now be described in more detail with reference to the drawings. 1 and 2 are perspective views and cross-sectional views showing an example of a heat storage type heating panel of the present invention, 1 is a heat storage type heating panel, 2 is a heat medium circulation pipe, 3 is a heat storage material portion, 4
Represents a formwork, and 5 represents a covering material. Further, FIG. 3 and FIG.
In a perspective view and a sectional view showing another example of the heat storage type heating panel of the present invention, 1 to 4 represent the same as the above.

In FIGS. 1 to 4, the heat medium circulating pipe 2 is made of a commonly used material such as a metal pipe such as a copper pipe, a steel pipe, a stainless pipe or a synthetic resin pipe such as cross-linked polyethylene, polybutene or nylon. Pipes can be used. The size of these pipes may be arbitrarily determined according to the design or use mode of the heat storage type heating panel, but normally, those having a nominal diameter of 6A to 25A are preferably used. How to lay the pipe (shape, density, etc.) may be appropriately selected, for example, as shown in FIGS.
However, the present invention is not limited to these.

In the heat storage material portion 3 in FIGS. 1 to 4, paraffins as heat storage components and a binder component composed of 5 to 30 parts by weight of hydrocarbon-based organic polymer per 100 parts by weight of the paraffins are mechanical. It is mixed by means.

As the paraffins used as the heat storage component in the present invention, T _max measured according to JIS K7121 (Plastic transition temperature measuring method) is a use temperature, that is, room temperature to 100 ° C., preferably room temperature to 80 ° C.
Organic compounds in the front and rear temperature ranges are used. However, the room temperature at this time means the lowest temperature that the heat storage material of the present invention encounters during its operation. Preferred specific examples of paraffins include various paraffins, waxes and waxes,
Examples thereof include fatty acids such as stearic acid and palmitic acid, polyethylene glycol and the like, and one of these may be used alone or a mixture of two or more may be used.

In the hydrocarbon organic polymer used in the present invention, the main chain is basically hydrocarbon, and other components in the main chain (for example, O, N, Si, halogen, etc.)
One or two or more hydrocarbon-based organic polymers having a content of 10% by weight or less, preferably 5% by weight or less are used. Examples of such hydrocarbon organic polymers are shown below. (1) Polyolefin polymers: homopolymers of α-olefins such as polymethylene, polyethylene, polypropylene, copolymers of olefins, copolymers of α-olefins with other monomers such as vinyl acetate, ethyl acrylate, ethyl methacrylate, etc. And these lightly halogenated polymers and the like.
It may be amorphous to low crystalline or crystalline. (2) Thermoplastic elastomers: Among those known or known as "thermoplastic elastomers" in the fields of rubber and plastics, T _max +1 of paraffins used at least at the above room temperature or higher.
In the temperature range of 0 ° C., preferably at least room temperature or higher and in the temperature range of T _max + 20 ° C., one having rubber elasticity is used. Of course, it is possible to use a material that maintains rubber elasticity even at a temperature higher than T _max + 20 ° C. Specifically, various conventionally known thermoplastic elastomers such as styrene type, olefin type, urethane type and ester type can be exemplified. (3) Hydrocarbon rubbers: natural rubber, styrene-butadiene-copolymer rubber, butyl rubber, isoprene rubber, ethylene-propylene copolymer rubber, ethylene-propylene-diene terpolymer rubber, ethylene-vinyl acetate Examples thereof include copolymer rubber and ethylene-ethyl acrylate copolymer rubber.

The hydrocarbon-based organic polymer as the binder component may be either crosslinkable or non-crosslinkable, but it is preferable that each has rubber-like properties rather than plastics properties.

In the present invention, the amount of the hydrocarbon organic polymer used is 5 to 3 with respect to 100 parts by weight of paraffins.
0 parts by weight. If the amount is less than 5 parts by weight, the flexibility of the obtained composition tends to be low and the composition tends to be brittle, and paraffins tend to exude or melt easily at T _max or more, while an excessive amount exceeding 30 parts by weight. In that case, the amount of paraffins used will decrease and the amount of heat storage will decrease in proportion.

When it is desired to crosslink or vulcanize the hydrocarbon organic polymer (hereinafter collectively referred to as "crosslinking"), they are carried out during or after mixing with the paraffins. As the method of crosslinking, any of the generally used chemical crosslinking, silane crosslinking (water crosslinking), irradiation crosslinking and the like can be adopted. When the heat storage material of the present invention is cross-linked, the degree of cross-linking is JIS
1% by weight in terms of gel fraction measured according to C 3005
Above (as a composition), preferably at least 2% by weight. By setting the degree of cross-linking to 1% or more, preferably 2% or more, the temperature of the heat storage material can be T _{max of} paraffins used.
Even in the above case, the shape can be maintained without melting or dropping.

In the present invention, the binder component consisting of a hydrocarbon organic polymer is particularly preferably the following A or its crosslinked product or B material. In such a case, the affinity between the paraffins and the binder component is particularly good. The amount of the molecule is 5 to 30 parts by weight) can be included in the hydrocarbon-based organic polymer particles. A. Combined system of the hydrocarbon rubbers of the above (3) and the polyolefin polymers of the above (1): As the polyolefin polymers in this case, homopolymers such as polymethylene, polyethylene, polystyrene, etc., and olefins are especially included as the components. And copolymers of olefins with other monomers such as vinyl acetate, acrylic acid, methacrylic acid, etc., which may be used alone or in combination of two or more. In particular, JIS K 7121 (transition temperature of plastics A highly crystalline one having a maximum crystal transition temperature (usually corresponding to a melting point) measured by the measuring method) which is at least 10 ° C. higher than T _{max of} the paraffin used, and preferably at least 20 ° C. higher than T _max is used. To be done. This crystalline polyolefin, when used in combination with a hydrocarbon rubber, has an appropriate flexibility and surely achieves shape retention. In addition, it is not brittle and does not crack even when molded, and maintains sufficient holding properties. The mixing ratio of the three components is 1 to 20 parts by weight, preferably 5 to 15 parts by weight, of hydrocarbon rubber based on 100 parts by weight of paraffins.
The amount of the polyolefin polymer is 1 to 20 parts by weight, preferably 5 to 15 parts by weight. In this mixed system, the heat storage material may be in a non-crosslinked state, but the gel fraction should be at least 1
%, Preferably at least 2% by weight, suitable method,
For example, it is preferably crosslinked by the above-mentioned chemical crosslinking method, water crosslinking method, irradiation crosslinking method, and especially water crosslinking method. B. (2) Thermoplastic elastomers: Paraffins preferably exhibiting rubber elasticity at least at T _max or less. In this case, at a temperature of T _max or lower, since it has rubber elasticity and can be favorably supported by the thermoplastic elastomer in a state in which the paraffins are well wrapped, the mixture is easy to handle, crack resistant, and easy to mold.
Furthermore, since the above elastomer _retains rubber elasticity even at a temperature higher than T _max , the heat storage material of the present invention does not melt or drip.

The above-mentioned paraffins and the hydrocarbon-based organic polymer are mixed by the mechanical means in the proportions as described above to form the heat storage material of the present invention. The mixing by the mechanical means means the paraffins. Due to the swelling, preferably the dissolution of the remaining components in the melt of at least one component in both of the hydrocarbon-based organic polymers, or the high temperature, any of the components to be mixed are flow-deformed by external force. It means the act of stirring, mixing, or kneading in a wet state.
For example, a mode in which a hydrocarbon-based organic polymer is dissolved in a melt of paraffins maintained at 100 to 200 ° C., and the resulting high temperature solution is stirred and mixed, a temperature at which each mixed component is softened, for example, 50 to 250 ° C. An example is a mode in which the kneading and mixing is performed using an ordinary kneader such as a two-roll, a Banbury mixer, an extruder, and a twin-screw kneading extruder. The degree of mixing is preferably as sufficient as possible, but generally 1 to 15
The mixing is performed for about 0 minutes, and it is judged to be visually uniformly mixed.

The above composition which has been mixed and made into a solution is molded as it is or after being slightly cooled. If you use an extruder, you can extrude into a sheet or plate,
Further, it can be formed into a rod shape or a pipe shape by the extruder.
If rods and pipes are chopped, it will be in the form of granules or pellets.

In addition to the above components, the heat storage material of the present invention may further contain various additives, if desired. For example, antioxidants, antioxidants, colorants, pigments, antistatic agents, antifungal agents, flame retardants depending on the application, and further metal powder, metal fibers, metal oxides for improving heat transfer, Carbon, carbon fiber, etc. can be used.

Since the heat storage material of the present invention thus obtained is excellent in moldability as described above, it can be molded into a preferable shape around the pipe as shown in FIGS. 2 and 4. Since it has the advantage of being solid and capable of retaining heat when storing heat, there is no fear of problems in strength and the like even when used for floor heating and the like.

In the present invention, the heat storage material portion is provided at a portion capable of storing heat by heat from the pipe, as shown in FIG. 4, when it is provided directly adjacent to the entire circumference of the pipe 2. As shown in FIG. 2, in the case where a part of the periphery of the pipe 2 is adjacent to the pipe 2 via the form 4, or in addition to this, the heat storage material portion can store heat, any form is included.

The mold 4 in FIGS. 2 and 4 is made of plywood,
Although an aluminum plate, an aluminum-clad plywood, or the like is usually used, the aluminum plate is preferably used because it has a great effect in terms of soaking. In particular, when the heat storage material 3 is provided via the mold 4 as shown in FIG. 2, an aluminum plate is preferably used as the mold material.

As a method for providing the heat storage material portion 3 at a portion capable of storing heat by the heat from the pipe 2, for example, after the pipe 2 is placed in the mold 4 made of an aluminum plate or the like, a solution of the heat storage material composition is dissolved. There is a method of casting and molding, a method of filling and molding a heat storage material in the form of granules or flakes, a method of installing the form 2 after incorporating the pipe 2 into the block-shaped heat storage material, and usually the first casting A molding method is preferably used. In the structure shown in FIG. 2, after this molding and solidification, the covering material 5 is provided on the form frame 4 with screws or the like.

The heat storage type heating panel of the present invention thus obtained not only has a low running cost,
At the time of on-site construction, the construction cost can be reduced because the construction can be done simply by laying the panels continuously.

The heat storage type heating panel of the present invention can be used not only for floor heating and wall heating, but also for snow melting or antifreezing.

[0027]

EXAMPLES Next, the present invention will be described more specifically by showing examples, but it goes without saying that the present invention is not limited to these examples. Example 1 An aluminum plate mold 4 having a cross section shown in FIG.
After arranging a 52 mm copper pipe in the shape shown in FIGS. 1 and 2, a heat storage material having the following composition was mechanically stirred and mixed at 160 ° C., and a melted material was poured. After solidification, plywood 5 is screwed to the upper surface and the structure shown in FIGS. 1 and 2 has a thickness of 35 mm, a width of 300 mm, and a length of 1800.
A heat storage type heating panel of mm was obtained.

Composition of heat storage material 115 ° F Paraffin 100 parts by weight Polyethylene 10 parts by weight Ethylene-propylene rubber 10 parts by weight Antioxidant 0.5 parts by weight The heat storage temperature of this heat storage material is 47 ° C and the heat storage amount is 40 kcal.
/ Kg, and kept solid even during heat storage, and did not flow even at 100 ° C.

Example 2 A heat storage type heating panel was obtained in the same manner as in Example 1 except that polyethylene in Example 1 was replaced with silane cross-linked polyethylene.

Example 3 Form 4 made of aluminum plate having the shape shown in FIGS. 3 and 4.
After arranging a cross-linked polyethylene pipe having an inner diameter of 13 mm in the shape shown in FIGS. 3 and 4, a heat storage material having the following composition was mixed and kneaded at 150 ° C., and the mixture was poured and molded. Thickness 30 with structure shown
A heat storage type heating panel having a size of mm, a width of 900 mm and a length of 1800 mm was obtained.

Composition of heat storage material 115 ° F. paraffin 100 parts by weight Thermoplastic elastomer 10 parts by weight (Shell Chemical Co., trade name Kraton G) Polyethylene wax 10 parts by weight Antioxidant 0.5 parts by weight Heat storage temperature of this heat storage material Is 47 ° C, heat storage is 40 kcal
/ Kg, and kept solid even during heat storage, and did not flow even at 100 ° C.

[0032]

[Experimental Example] Using the heat storage type heating panels obtained in Examples 1, 2 and 3, floor heating work of an office was performed with the configuration shown in FIG. That is, a waterproof sheet 7 is laid on a concrete floor 6 having a thickness of 120 mm, and a commercially available heat insulating sheet 8 is placed on the waterproof sheet 7.
After laying (thickness 30 mm), the heating panel 1 of the present invention was laid continuously, and the floor finishing material 9 made of tile carpet was laid on it.

8 hours at night from a water heater using midnight power,
After supplying hot water to the pipe of the heating panel to store heat in the heat storage material, the hot water supply was stopped in the daytime and the indoor temperature was examined. As a result, when the outside air temperature was −13 ° C. to 3 ° C. The room temperature was kept at 19 to 23 ° C and was comfortable all day. Regarding the heat storage material, no abnormality such as melt-out was observed even during heat storage, and the solid state was maintained.

[0034]

As described above, the heat storage type heating panel of the present invention is one in which a specific heat storage material is provided in at least a part of the periphery of the heat medium circulation pipe, and according to the present invention, floor heating. It is possible to reduce various costs in such cases.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a heat storage type heating panel of the present invention.

FIG. 2 is a sectional view taken along the line AA ′ of the heating panel shown in FIG.

FIG. 3 is a perspective view showing another example of the heat storage type heating panel of the present invention.

FIG. 4 is a BB ′ cross-sectional view of the heating panel shown in FIG.

FIG. 5 is a diagram showing a usage example of the heat storage type heating panel of the present invention.

[Explanation of symbols]

 1: Heat storage type heating panel 2: Heat medium circulation pipe 3: Heat storage material part 4: Formwork 5: Surface material 6: Concrete floor 7: Waterproof sheet 8: Thermal insulation material 9: Floor finishing material

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Chiaki Momose 4-3 Ikejiri, Itami City, Hyogo Prefecture Mitsubishi Cable Industries, Ltd. Itami Works

Claims (1)

Claim: What is claimed is: 1. A heat medium circulation pipe, and a heat storage material part formed by mixing 100 parts by weight of paraffins and 5 to 30 parts by weight of a hydrocarbon organic polymer by mechanical means. A heat storage type heating panel in which the heat storage material part is incorporated so as to be able to store heat by heat from the pipe.