JP2000186389A - Latent-heat storage type floor slab structure and execution method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a latent-heat storage type floor slab structure, in which the efficiency of air conditioning is improved in a building-frame structure made of concrete, and an execution method. SOLUTION: Irregularities in the underside of a concrete slab 1 and a corrugated type deck plate 2 are stuck fast, and flat steel plates 3 are joined with the undersides of the corrugated type deck plate 2. Paraffinic latent-heat storage materials 4 being low in cost and having superior heat-storage capacity and durability are sealed into spaces held by the corrugated type deck plate 2 and the flat steel plates 3, and fluidity is kept low by a specified additive in the latent-heat storage materials 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete driving structure, and more particularly, to a latent heat storage type floor slab structure and a construction method for improving the efficiency of cooling and heating.

[0002]

2. Description of the Related Art As a part of an energy saving system, a heat storage system is known in which cold and hot heat obtained by inexpensive nighttime electric power is stored in a heat storage medium, and the cold and hot heat is used during the day to improve the efficiency of cooling and heating. I have. Above all, a heat storage system using a latent heat storage material having a large heat storage capacity and capable of reducing the size of a heat storage tank has begun to be widely adopted.

In a conventional heat storage system using a latent heat storage material, cold heat obtained by driving a heat source device such as a boiler or a heat pump at night is stored in a heat storage tank via a heat transfer medium. In the daytime, the cooling / heating heat stored in the heat storage tank is radiated to the heat exchanger or the driving body (such as a concrete slab) via the heat transfer medium to reduce the cooling / heating load.

[0004]

In such a conventional heat storage system using a latent heat storage material, the place where heat is stored and the place where heat is radiated are different, and the exchange of heat between the two is indirectly performed via a heat transfer medium. Therefore, there is a problem that it takes an enormous amount of time and cost to arrange a pipe, a pump, and the like in a circulation path of a heat transfer medium that connects the heat storage tank with the heat source device and the heat exchanger. There is also a problem that heat loss during heat transfer cannot be avoided.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has as its object to efficiently store and release heat and to provide a latent heat storage device having a simple structure that does not require the provision of a heat storage tank and its peripheral devices. An object of the present invention is to provide a floor slab structure and a construction method.

[0006]

In the latent heat storage type floor slab structure according to the first aspect of the present invention, the unevenness on the lower surface of the concrete and the corrugated deck plate are in close contact with each other, and the lower surface of the corrugated deck plate is provided. A sealing plate such as a flat steel plate, and a heat storage material having a large latent heat storage amount is sealed in a space between the corrugated deck plate and the sealing plate.

A latent heat storage type floor slab structure according to a second aspect is characterized in that, in the first aspect, a part of a space sandwiched between the corrugated deck plate and the sealing plate is a ventilation space. And

According to a third aspect of the present invention, there is provided a method for constructing a floor slab structure of a latent heat storage type, wherein a sealing plate such as a flat steel plate is joined to a lower surface of a corrugated deck plate, and a latent heat storage amount is provided in a space sandwiched between the two. A heat storage material having a large size is enclosed, and concrete of a floor slab is cast on the upper surface of the corrugated deck plate.

According to a fourth aspect of the present invention, there is provided a method for constructing a floor slab structure of a latent heat storage type, wherein a sealing plate such as a flat steel plate is joined to a lower surface of a corrugated deck plate, and a latent heat storage amount is provided in a space sandwiched between the two. In addition to encapsulating a large heat storage material, the upper surface of the corrugated deck plate is fitted to the lower surface of another corrugated deck plate of the same type as the corrugated deck plate integrally arranged on the lower surface of the concrete slab on the floor. It is characterized by joining together.

[0010]

1 and 2 show the basic structure of a latent heat storage type floor slab according to an embodiment of the present invention. The irregularities on the lower surface of the concrete slab 1 and the corrugated deck plate 2 are in close contact with each other, and the flat steel plate 3 is joined to the lower surface of the corrugated deck plate 2. A space between the corrugated deck plate 2 and the flat steel plate 3 is filled with, for example, a paraffin-based latent heat storage material 4 excellent in cost, heat storage capacity, and durability. The flowability is kept low by adding the additives.

Next, a method of constructing the floor slab structure will be described. A flat steel plate 3 of a predetermined size is welded or bonded to the lower surface convex portion of the corrugated deck plate 2 to integrate the two. The space interposed between the two is filled with the latent heat storage material 4, and a sealing plate such as a flat steel plate (not shown) is welded or adhered to both ends of the space. Next, a concrete slab 1 is cast on the upper surface of the corrugated deck plate 2 as a mold to form a heat storage type floor slab (FIG. 1). The flat steel plate 3 is not limited to this, but may be any material as long as it can function as a sealing plate.

Another construction method will be described. In this method, a heat storage unit including a corrugated deck plate 2, a flat steel plate 3, and a latent heat storage material 4 is manufactured separately from the construction of the floor slab. Further, the concrete slab 1 of the floor is cast using the corrugated deck plate 5 which is the same as the corrugated deck plate 2 of this unit as a mold. Then, the upper and lower surfaces of the corrugated deck plate 2 are fitted to the lower surface of the corrugated deck plate 5 to connect them (FIG. 2). The connection between the two is made by welding, screwing, magnet attraction, or the like. In addition, since the corrugated deck plate 5 and the corrugated deck plate 2 need to completely match in shape, it is desirable to use corrugated deck plates of the same manufacturer and of the same model number.

A method of utilizing the latent heat storage type floor slab structure of the present invention will be described. Above or below the floor slab, a ceiling / floor member serving as decoration, soundproofing, and heat insulation is provided. Usually, a space is provided between the two to allow free wiring and piping. A device for blowing cool and hot air is installed in a predetermined position such as a free access space in contact with the upper surface of the floor slab or a space above the ceiling in contact with the lower surface of the floor slab. This can be done at night (for example, 22
(From time to 6 o'clock the next day), and cool or hot air is passed through both or one of the spaces to store heat in the floor slab. At this time, the cold and hot heat of the cool and hot air flowing on the upper surface (lower surface) of the floor slab is accumulated in both the concrete slab 1 and the latent heat storage material 4. Since both are in close contact with each other without an air layer therebetween, the heat transfer property is extremely good. Therefore, rapid simultaneous heat storage with little heat loss to both is possible, and power consumption for heat storage is reduced. Also, due to the synergistic effect of the concrete slab 1 and the latent heat storage material 4, a large amount of heat can be stored dramatically compared to the case where only the concrete slab 1 is stored.

Here, the amount of heat storage per 1 m ² of the floor slab is estimated using specific numerical values. The cross section of the floor slab used in this calculation is shown in FIG. The upper end width of the convex portion of the corrugated deck plate 2 is 110 mm, and the lower end width is 142 mm. The upper end width of the concave portion of the corrugated deck plate 2 is 120 mm.
And the lower end width is 88 mm. The thickness of the concrete slab is 85 mm on the convex portion of the corrugated deck plate and 160 mm (75 mm + 85 mm) on the concave portion. Assuming that the specific heat of the volume of the concrete is 460 kcal / m ³ · ° C. and the temperature fluctuation is 5 ° C., the heat storage capacity of the concrete per 1 m ^{2 of} the floor slab is 276 kcal. The use of a paraffin (40 kcal / kg) as the latent heat storage material, which is calculated as being 35kg per floor slab 1 m ² housing, heat storage quantity of latent heat storage material per 1 m ² of the floor slab is 1400Kcal. Therefore, the floor slab is capable of heat storage of 1676kcal per 1m ^2. This is about six times the heat storage capacity of the concrete slab alone.

As an application of the above embodiment, there is a method in which a part of a space sandwiched between a corrugated deck plate 2 and a flat steel plate 3 is used as a blower duct 6 for cooling and warm air. An example is shown in FIG.
Shown in The portion filled with the latent heat storage material and the air duct 6 are arranged alternately. This method is effective when there is no space to blow air above or below the floor. Also,
This is also effective when it is necessary to increase the contact area between the hot and cold air and the floor slab to increase the efficiency of heat exchange.

[0016]

According to the heat storage type floor slab of the present invention, the latent heat storage material and the concrete slab are in close contact with each other via the corrugated deck plate, and since there is no air layer between the two, the heat transfer property is extremely good. is there. Therefore, rapid simultaneous heat storage with little heat loss to both is possible, and power consumption for heat storage is reduced. Also, due to the synergistic effect of the concrete slab and the latent heat storage material, a much larger amount of heat can be stored than when only the concrete slab is stored.

Further, since the floor slab is used as a heat storage medium, there is no need to install a special heat storage tank and its peripheral devices, and heat can be stored very easily in the same manner as heat storage for a motor vehicle, thereby reducing initial costs and running costs. And shorten the construction period.

Furthermore, the corrugated deck plate enclosing the latent heat storage material can be used as it is as a formwork, or it can be used by being fitted to a floor slab and used, so that it is excellent in space saving and workability.

[Brief description of the drawings]

FIG. 1 is a perspective view of a floor slab (formwork construction) according to an embodiment of the present invention.

FIG. 2 is a perspective view of a floor slab (fitting work) according to the embodiment of the present invention.

FIG. 3 is a sectional view of a floor slab according to the embodiment of the present invention.

FIG. 4 is a cross-sectional view of a floor slab partly used as a ventilation duct.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Concrete slab 2 Corrugated deck plate 3 Flat steel plate 4 Latent heat storage material 5 Corrugated deck plate 6 Air duct

Claims (4)

[Claims] 1. A corrugated deck plate having irregularities and a corrugated deck plate in close contact with each other, and a sealing plate such as a flat steel plate is joined to a lower surface of the corrugated deck plate to form the corrugated deck plate and the sealing plate. A latent heat storage type floor slab structure, characterized in that a heat storage material having a large amount of latent heat storage is sealed in a space sandwiched between the floor slabs. 2. The latent heat storage type floor slab structure according to claim 1, wherein a part of a space sandwiched between the corrugated deck plate and the sealing plate is a ventilation space. 3. A sealing plate such as a flat steel plate is joined to a lower surface of the corrugated deck plate, a heat storage material having a large latent heat storage amount is sealed in a space sandwiched between the both, and a top surface of the corrugated deck plate is filled. A method of constructing a latent heat storage type floor slab structure, wherein concrete of a floor slab is poured into the floor. 4. A sealing plate such as a flat steel plate is joined to the lower surface of the corrugated deck plate, and a heat storage material having a large amount of latent heat storage is sealed in a space sandwiched between the two. A latent heat storage type floor slab structure, wherein upper and lower surface irregularities of the corrugated deck plate are fitted to and joined to lower surface irregularities of another corrugated deck plate of the same type as the corrugated deck plate disposed integrally. Construction method.