JP2000039180A - Construction structure heat accumulating system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a heat exchanging efficiency between either return air or supply air and slabs in order to perform an effective utilization of the slabs as heat accumulating medium. SOLUTION: A finish floor is arranged on a slab 1 to keep a double space 4 acting as a passage for return air or supply air between the slab and the finish floor and then a heat exchanging operation is carried out with air while the slab is applied as a heat accumulating medium. Turbulence flow promoting members 5 for use in making an air flow within the double floor space into a turbulence flow state are fixed to supporting columns 3 for supporting the finish floor. A surface of the slab is formed with some corrugations 6 for improving a heat exchanging efficiency between the slab and the air. As the turbulence promoting members 5, it is preferable to provide a member having a configuration in which an air flow direction is changed to flow in a downward direction to blow the air flow against the surface of the slab, or a configuration in which the direction of air is changed to flow toward a side to cause the air flows to be struck against to each other, or a configuration in which an air flowing direction is changed to a slant downward direction to cause the air flow to be blown against the surface of the slab and then the air flows are struck against to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat storage system applied to a building air conditioner, and more particularly to a skeleton heat storage system that effectively uses a concrete slab as a heat storage medium.

[0002]

2. Description of the Related Art As is well known, a heat storage system in an air conditioner is an effective means capable of performing a peak cut of a load and reducing the capacity of a heat source device. The most common type of heat storage system uses water stored in a heat storage tank as a heat storage medium.In recent years, however, the use of other heat storage media has been considered. Since it is expected that a considerable heat capacity can be secured, it is considered that it can be effectively used as a heat storage medium.

FIG. 4 is a conceptual diagram of a heat storage system that can be used when a slab 1 as a body is to be used as a heat storage medium. In this method, a finishing floor 2 is provided on a slab 1 in a state of being floated by columns 3 to secure a double floor space 4, which is used as a passage for retentate air or supply air. Then, when air conditioning is stopped at night or the like, the air flow for storing heat in the double floor space 4 (cold air in summer, warm air in winter).
The heat storage operation is performed on the slab 1 through the slab 1, and the heat retained in the slab 1 is radiated to the ethane air or the supply air by passing the ethane air or the supply air through the double floor space 4 at the time of air conditioning.

[0004]

Since the heat transfer coefficient of a gas is generally lower than that of a liquid or the like, the slab 1 which is a mere flat concrete surface and the urethane air or the supply air are different from those of the above case. The heat exchange efficiency cannot be expected so much. Therefore, in order to effectively use the slab 1 as a heat storage medium, it is an important issue how to increase the heat exchange efficiency between the slab 1 and the air or the supply air.

[0005]

SUMMARY OF THE INVENTION In view of the above circumstances, the present invention relates to a skeleton heat storage system applied to an air conditioning system for a building. A double-floor space that serves as an air passage is secured, and the slab is used as a heat storage medium to perform heat exchange with ethane air or supply air. It is characterized in that a turbulence promoting member for bringing the air flow into a turbulent state is attached to a column supporting the finishing floor.
It is more preferable to form irregularities on the surface of the slab to improve the efficiency of heat exchange between the slab and the supply air. As the turbulence promoting member, a member configured to change the wind direction of the ethane air or the supply air downward to blow the airflow to the surface of the slab, or to change the wind direction of the ethane air or the supply air to the side to cause the airflow to flow. It is preferable to employ a configuration in which the air flows against the surface of the slab and the air flows collide with each other by changing the wind direction of the urethane air or the supply air obliquely downward.

[0006]

1 to 3 show an embodiment of the present invention. In the frame heat storage system of the present embodiment, similarly to the structure shown in FIG. 4, a finishing floor 2 is provided on a slab 1 as a heat storage medium in a state of being floated by columns 3, and a double floor space 4 is secured. A turbulence promoting member (turbulence promoter) 5 (5A, 5B, 5C) is attached to each column 3 to make the air flow in the double floor space 4 a turbulent state. Further, a large number of irregularities 6 are formed on the surface of the slab 1 so as to be orthogonal to the direction of the air flow, thereby increasing the heat exchange efficiency between the slab 1 and the retane air or the supply air.

The turbulence promoting member 5 can be of various configurations. In this embodiment, three types shown in FIG. 3 are employed. The turbulence promoting member 5A shown in FIG.
Is made of a wind direction plate (flat plate or curved plate) that changes the wind direction downward, and blows an airflow of urethane air or supply air toward the surface of the slab 1. The turbulence promoting member 5B shown in (b) has two wind direction plates having a twist placed vertically to distribute the wind direction to the left and right sides and to change the wind direction downward.
The turbulence promoting member 5C shown in (c) has a form of an air passage that distributes an airflow to the left and right by performing press working on the supporting plate 3a made of metal for fixing the column 3 on the slab. It was formed. Furthermore, it is possible to make turbulence more likely to occur if a hole or a fin is provided in each of the turbulence promoting members 5 (the turbulence promoting member 5B shown in FIG. 1 uses a perforated plate). Examples are shown).

[0008] Either of the turbulence promoting members 5 as described above is attached to the column 3 or, as shown in FIG. 2, the turbulence promoting members 5A, 5B and 5C are used in an appropriate combination to enhance the turbulence. When passing through the member 5, the airflow naturally becomes a turbulent state, and the airflows distributed to the left and right by the turbulence promoting member 5 collide with each other to generate turbulence, and the airflow in the double floor space 4 naturally occurs. Turbulence occurs. In particular, in the area between the columns 3 (the area shown by the chain line circle in FIG. 2), in addition to the collision of the air currents, the turbulence state is severe due to the formation of the irregularities 6 on the surface of the slab 1, As a result, the heat transfer characteristics at the interface with the slab 1 are remarkably promoted as compared with the case where the airflow flows statically in a laminar flow state, and therefore, the heat exchange efficiency between the airflow and the slab 1 can be improved. Slab heat storage can be used effectively. In addition, since the unevenness 6 is formed on the slab 1, in addition to the effect of promoting the turbulence caused by the unevenness 6, the effect of improving the heat transfer efficiency by increasing the heat transfer area for the air flow can be obtained.

The finishing floor 2 used in the skeleton heat storage system of the above embodiment can be a general-purpose free access floor as it is, and each of the turbulence promoting members 5 has a very simple structure without moving parts. Therefore, it is easy and inexpensive to manufacture, and it is only necessary to attach it using the columns 3 of the free access floor, so that the installation work is extremely simple, and the formation of the unevenness 6 on the slab 1 is made of concrete. It can be easily performed at the time of casting or by roughening after casting. From the above, the cost burden by employing the main body heat storage system is small and very effective.

The turbulent state of the air flow in the double floor space 4 is generated not only in the retane air or the supply air but also in the heat storage air flow for storing heat in the slab 1. Needless to say, the heat exchange efficiency can be improved not only during the heat storage in the slab 1.

[0011]

The slab heat storage system of the present invention provides heat exchange between the slab as a heat storage medium and the slab as a heat storage medium by providing a finishing floor on the slab and passing the retane air or the supply air therebetween. And, since the turbulence promoting member is attached to the column supporting the finished floor, the turbulence promoting member causes the airflow of the ethane air or the supply air in the double floor space to be in a turbulent state,
Therefore, the heat transfer characteristics at the boundary surface with the slab are remarkably promoted, so that the heat exchange efficiency between the airflow and the slab can be improved, and the slab heat storage can be effectively used. In addition, when the unevenness is formed on the slab surface, in addition to the effect of promoting turbulence due to the unevenness, the effect of improving the heat transfer efficiency by increasing the heat transfer area for the air flow can be obtained. Further, as a turbulence promoting member, a member that blows airflow to the surface of the slab by changing the wind direction downward, a member that changes the wind direction to the side and causes the airflows to collide with each other, or a member having both functions. If it is adopted, the turbulence promoting effect can be reliably obtained, and the configuration is simple, and it is effective because it can be manufactured at low cost.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an outline of a skeleton heat storage system according to an embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a diagram showing an example of a turbulence promoting member.

FIG. 4 is a conceptual diagram of a skeleton heat storage system using a slab as a heat storage medium.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Slab (heat storage medium) 2 Finishing floor 3 Post 4 Double floor space 5 (5A, 5B, 5C) Turbulence promoting member 6 Unevenness

Claims (3)

[Claims] 1. A skeleton heat storage system applied to a building air conditioner, wherein a finishing floor is provided on a slab, and a double-floor space serving as a passage for retane air or supply air is secured therebetween. A turbulence promoting member for performing heat exchange between the slab as the heat storage medium and the retane air or the supply air, and for setting the air flow of the retane air or the supply air in the double floor space to a turbulent state. Is attached to a column supporting the finished floor. 2. The skeleton heat storage system according to claim 1, wherein irregularities are formed on a surface of said slab to improve a heat exchange efficiency between said slab and a supply air. 3. The turbulence-promoting member having a configuration in which the wind direction of ethane air or supply air is changed downward to blow the airflow onto the surface of the slab, or the turbulence promoting member changes the wind direction of ethane air or supply air to the side. Characterized by using a configuration in which airflows collide with each other, or a configuration in which the airflow is blown obliquely downward and the airflow is blown onto the surface of the slab and the airflows collide with each other. Claim 1
Or the frame heat storage system according to 2.