JP2003041676A - Heat exchange convection wall and building for electric, communicating, and mechanical facilities using this wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a heat exchange convection wall having both the heat insulation function and heat radiation function and also to restrict the running cost of air regulator, reduce power consumption and contribute to the solution of environmental problems as a result in a building for electric, communicating and mechanical facilities by using the wall. SOLUTION: The heat exchange and convection wall 10 comprises an outer side panel 1 comprising a high heat transmission material, an insulation member 2 adhered to the inner surface of the outer side panel, and an inner side panel 4 comprising a high heat transmission material provided with a predetermined space 3 from an insulation member. An air inflow hole 31 is provided at one end of a predetermined space 3, an air outflow hole 32 is provided at the other end of the space. A building 50 for electric, communicating, and mechanical facilities use the heat exchange and convection wall 10 for exterior wall 51 and roof 52 of the building, an air inflow hole 31 is provided for air convection layer 3 at the side wall near the corner of the building floor 31, air outflow holes 32 for air convection layer are provided at several places on the roof 52 of the building, and a ventilating fan 60 is connected to an outlet hole.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchange convection wall and an electric / communication machinery / equipment building using the heat exchange convection wall.

[0002]

2. Description of the Related Art Air conventionally used in buildings
In order to prevent external air inflow load, conditioning is mainly designed with an outer wall structure made of a heat insulating material in consideration of heat transmission coefficient and air conditioning by an air conditioner.

On the other hand, in an electric / communication machinery / equipment building provided with facilities such as communication equipment, power supply, and air conditioner,
The indoor equipment may have a high temperature due to the heat generated by the installed equipment, which requires constant cooling throughout the year, resulting in enormous energy consumption. The concept of insulating the interior of the room with the outer wall material is effective when the outdoor temperature is higher than the indoor temperature. However, when the outdoor temperature is lower than the indoor temperature, the outer wall heat insulating material acts as a heat insulating material to prevent heat radiation from indoors, which has the opposite effect. Ventilation adjustment that directly introduces outside air is also a factor to be considered, but when precision machinery is installed indoors, there is concern about adverse effects such as dust, salt damage, and chemical reactions due to gases, so direct introduction of outside air is not recommended. Remains a problem.

Therefore, the outer wall material itself has a heat insulating function in the case of "outdoor temperature> indoor temperature (outdoor temperature is higher than indoor temperature)" such as during the daytime in summer, and "outdoor temperature <indoor temperature (outdoor temperature If the temperature is lower than the indoor temperature) ", it is preferable to have a heat dissipation function. Therefore, it can be said that the outer wall material that has the functions of "heat insulation" and "heat dissipation" is the most ideal outer wall.

In recent years, environmental issues have been highlighted, and prevention of ozone layer depletion and prevention of global warming have become the subject, and air conditioners have also been the subject. Taking these environmental problems into consideration, the people involved developed an inverter air conditioner and new refrigerant,
Attempts to put it into practical use are being studied.

[0006]

As a shelter manufacturer for the mobile communications business, the present applicant has been researching and developing a shelter in consideration of environmental problems, and has utilized outside air existing in nature. We have developed a heat exchange convection wall that has both "insulation" and "heat dissipation". An object of the present invention is to reduce the running cost of an air conditioner, reduce power consumption, and eventually contribute to solving environmental problems.

[0007]

A heat exchange convection wall according to the present invention is provided with an outer panel made of a high heat flow-through material, a heat insulating member adhered to the inner surface of the outer panel, and a predetermined space from the heat insulating member. And an inner panel made of high heat flow-through material. An air inlet is provided at one end of the predetermined space,
An air outlet is provided at the other end of the space to form an air convection layer.

The heat exchange convection wall formed as described above is used for the outer wall and roof of a building, and an air inlet of an air convection layer is provided near the corner of the building floor below the outer wall of the building to provide a roof of the building. An electric / communication machinery / equipment building can be obtained by providing air outlets of an air convection layer at a plurality of locations and connecting ventilation fans to the outlets.

It is preferable that temperature sensors are provided inside and outside the building, and an electric shutter is provided on the ventilation fan. When the temperature sensor detects that the outdoor temperature is higher than the indoor temperature or the outdoor temperature is lower than the indoor dew point temperature, the ventilation fan is stopped and the electric shutter is closed. By doing so, condensation is prevented.

It is preferable to provide a punched panel at the joint between the roof and the side wall (outer wall) of the building and / or at the outlet of the air convection layer. By doing so, the air flow in the air convection layer can be made uniform and uneven flow can be prevented.

It is preferable to connect the bent flow path to the air inlet of the air convection layer. By doing so, it is possible to prevent dust and rainwater from being sucked in and clogged from the air inlet, and to facilitate the discharge of dust, rainwater, and condensed water that have entered.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a heat exchange convection wall 10 according to the present invention will be described with reference to FIG. The heat exchange convection wall 10 of the present invention includes an outer panel 1 made of a high heat flow-through material (for example, aluminum), a heat insulating member 2 bonded to an inner surface 11 of the outer panel 1, and a predetermined space 3 opened from the heat insulating member 2. And an inner panel 4 made of high heat flow-through material (for example, aluminum). An air inlet 31 is provided at one end of the predetermined space 3, and an air outlet 32 is provided at the other end of the space 3 to form the air convection layer 3.

The principle of the heat exchange convection outer wall 10 of the present invention will be described in comparison with the conventional heat insulating outer wall 20 shown in FIG.

The conventional heat insulating outer wall 20 comprises an outer panel 1 made of a high heat transmission material (for example, aluminum), a heat insulating member 2, and an inner panel 4 made of a high heat transmission material (for example, aluminum). The conventional heat insulating outer wall 20 plays a role of reflecting solar radiation from the outside and preventing heat conduction due to the outside air temperature. However, in the case of electric / communication machinery / equipment buildings that require a large amount of internal heat generation and require cooling throughout the year, even when the outdoor temperature falls below the indoor temperature,
Discharge of temperature energy in the room is disturbed, and the air conditioning is inefficient.

On the other hand, the heat exchange convection wall 10 (FIG. 1) of the present invention.
Uses the heat insulating material 2 for the outer wall as usual, provides the air convection layer 3 on the indoor side, and separates the outdoor and the indoor with the panels 1 and 4 made of aluminum or the like having a good heat transmission coefficient, so that the heat exchange is performed by the air convection. Can be performed more efficiently.

By controlling the air convection layer 3 by the temperature difference between the outdoor temperature and the indoor temperature, "outdoor temperature> indoor temperature".
A heat insulating function can be realized under the condition of, and a heat radiating function can be realized under the condition of "outdoor temperature <indoor temperature".

Next, an embodiment of the electric / communication machinery / equipment building 50 of the present invention using the above-mentioned heat exchange convection wall 10 will be described with reference to FIGS.

The electric / communication machinery / equipment building 50 is shown in FIG.
5, the heat exchange convection wall 10 is used for the outer wall 51 and the roof 52 of the building, and the air inlet 31 of the air convection layer 3 is provided under the outer wall 51 near the corner of the building floor 53 (see FIG. 8). (See FIG. 6), the air outlet 32 (FIG. 6) of the air convection layer 3 is provided at a plurality of points on the building roof 52, and the ventilation fan 60 is connected to the outlet 32.

As for the flow of air convection, as shown by the white arrows in FIGS. 6 to 8, by operating the ventilation fan 60 in the central portion of the ceiling, the outside air is introduced from the air inlet 31 provided below the outer wall 51. It is taken into the convection layer 3 and forcedly causes convection. The outside air that has flowed in absorbs heat inside the room while passing through the outer wall 51 and the roof 52, and is discharged to the outside from the ventilation fan 60 at the ceiling. This can be said to be the so-called heat dissipation function of the air convection layer.

In the embodiment shown in FIGS. 3 and 5, ventilation fans 60 are provided at three locations along the longitudinal centerline of the roof 52. The capacity, installation location, and number of the ventilation fans 60 are determined based on the shape of the building 50, the amount of heat generated by the indoor installation equipment, and the like. On the condition that dew condensation is generated, a dew condensation surface may be provided inside the outer wall 51 and the roof 52, and the dew condensation water may be discharged as described later.

A temperature sensor 70 (see FIG. 3) is provided inside and outside the electric / communication machinery / equipment building 50, and a ventilation fan 60 is provided.
It is preferable to provide an electric shutter 61 (see FIG. 6). When the temperature sensor 70 detects that the outdoor temperature is higher than the indoor temperature or the outdoor temperature is lower than the indoor dew point temperature, the ventilation fan 60 is stopped and the electric shutter 61 is closed. Since it is completely sealed indoors, it is not affected by the outdoor environment. this is,
It can be said that this is the so-called heat insulation function of the air convection layer. In this case, the condensed water is drained from the lower air inlet 31 of the outer wall 51.
Furthermore, the ventilation fan 60 is provided with a hood backflow prevention hood,
It is preferable to prevent wind and rain from entering during a typhoon.

As shown in FIGS. 6 and 7, punching processing is performed on the joint portion between the roof 52 and the side wall (outer wall) 51 of the electric / communication machinery / equipment building 50 and / or the outlet 32 of the air convection layer 3. It is preferable to provide the panels 12 and 13 described above. By doing so, the air flow in the air convection layer 3 can be made uniform and uneven flow can be prevented.

As shown in FIG. 8, it is preferable to connect the bent flow passage 14 to the air inlet 31 of the air convection layer 3.
By doing so, it is possible to prevent suction of dust and rainwater from the air inlet 31 and clogging, and
Facilitates the discharge of entering dust, rainwater, and condensation water.

[0024]

[Example 1] A running cost simulation of an air conditioner (not shown) in an electric / communication machinery / equipment building 30 (Figs. 3-5) using the heat exchange convection wall 10 (Fig. 1) of the present invention, Electricity using the conventional heat insulation wall 20 (Fig. 2)
It was compared with that of an air conditioner in a telecommunication equipment building (not shown). The running cost simulation is performed under the following conditions. (1) Place: Kagoshima City (2) Internal heat generation: 15.4kw (13,244kcal /
h) (3) Outer wall: Conventional heat insulating material: Air convection layer of the present invention (natural convection): Air convection layer of the present invention (forced convection) (4) Result: Energy saving effect is converted into electricity bill and shown in Table 1.

<< Table 1 >>

[Table 1]

In conclusion, by using the convection outer wall of the present invention, it is considered that there is an energy saving effect of about 10%. In particular, when the air is forced to pass through the air convection layer, an improvement of about twice can be expected as compared with the case of natural convection.

[0027]

EXAMPLE 2 A conventional heat insulation wall 20 (FIG. 2) is used for a simulation of dew condensation in an electric / communication machinery / equipment building 30 (FIGS. 3-5) using the heat exchange convection wall 10 (FIG. 1) of the present invention. It was compared with the one in the electric / communication machinery / equipment building (not shown). In an electric / communication machinery / equipment building 50 such as a wireless communication equipment room where people are less likely to come and go, the indoor temperature and humidity can be said to be substantially constant. In summer when the temperature is high and humidity is high outside, the temperature is 35 ° C indoors using heat insulation material.
Humidity of 20 to 30% is maintained.

Here, the aluminum panel (thickness t =
For the condensation on the inner wall that occurs when the outside air and the inside air are in contact with each other at a distance of 1 mm), a trial calculation of the condensation temperature is performed under the following conditions. (1) Indoor temperature: 35 ° C (2) Indoor humidity: 30% (3) Wall thermal conductivity α: 180.6 kcal / mh ° C
(Aluminum, t = 1.0 mm) (4) Outer surface heat transfer coefficient α _o : 20 kcal / mh ° C. (5) Inner surface heat transfer coefficient α _i : 8 kcal / mh ° C.

Here, the heat transmission resistance R of the wall (aluminum t = 1.0 mm) is determined. R = 1/20 + 0.001 / 180.6 + 1/81 = 0.05 + 0.0000000554 + 0.125 ≈0.175 m ² h ° C / kcal Saturated water vapor pressure f at a temperature of 35 ° C is 42.18 mmHg, so the humidity is 30%. More indoor water vapor pressure f'is f '
= (30/100) x 42.18 = 12.654 mmHg
Becomes The temperature at which the water vapor pressure f ′ becomes the saturated water vapor pressure f (wall surface temperature) is the condensation temperature t _d = 14.8 ° C. Now, the outside air temperature t at which the indoor temperature is 35 ° C. and the condensation temperature t _d = 14.8 ° C. is obtained. t = indoor temperature + (t _d −indoor temperature) × α _i × R = 35 + (14.8−35) × 8 × 0.175 = 6.72 ° C.

From the above results, the outdoor temperature t is 6.72 ° C.
Condensation occurs when lower than. For example, in Kyushu, where the temperature is high and the humidity is high, the average outdoor temperature drops to below freezing in winter, and when convection of outside air into the air convection layer causes dew condensation, which is high because the indoor temperature is high. As a dew condensation prevention measure, dew condensation can be avoided by controlling the air convection layer under the condition that the dew point temperature (6.72 ° C.) is higher than the outside air temperature.

[0031]

Third Embodiment Next, the heat transfer coefficient of the heat exchange convection wall will be examined. Under conditions other than outdoor temperature> indoor temperature> indoor dew point temperature, when convection does not occur in the air convection layer, this can be regarded as a non-sealed air layer. Comparing the thermal resistance of the non-enclosed air layer with the thermal resistance of the heat insulating material gives the following results. For example, Table 2 below shows the results of examination using three types of heat insulating materials, namely canelite foam, concrete, and ALC.

<< Table 2 >>

[Table 2]

In order to maintain the heat insulating function of the conventional heat insulating wall, it is a condition that the thickness of the air convection layer 3 is not made thinner than the values shown in Table 2 above.

[0034]

According to the present invention, it is possible to obtain a heat exchange convection wall having both the functions of "heat insulation" and "heat dissipation", and when it is used in an electric / communication machinery / equipment building, air conditioning is performed. The running cost of the machine can be suppressed, the power consumption can be reduced, and as a result, it can contribute to solving environmental problems.

[Brief description of drawings]

FIG. 1 is an explanatory view showing the principle of a heat exchange convection wall of the present invention.

FIG. 2 is an explanatory diagram showing the principle of a conventional heat insulating wall.

FIG. 3 is a vertical cross-sectional view of an electric / communication machinery / equipment building using the heat exchange convection wall of the present invention.

FIG. 4 is a transverse cross-sectional view of the electric / communication machinery / equipment building seen from line IV-IV in FIG. 3.

5 is a plan view of the electric / communication machinery / equipment building seen from the line VV in FIG. 3. FIG.

FIG. 6 is a vertical cross-sectional view of the vicinity of a ventilation fan provided on the roof of the electric / communication machinery / equipment building shown in FIG.

7 is a vertical cross-sectional view in the vicinity of a joint between a roof and a side wall of the electric / communication machinery / equipment building shown in FIG.

FIG. 8 is a vertical cross-sectional view in the vicinity of a side wall floor corner of the electric / communication machinery / equipment building shown in FIG.

[Explanation of symbols]

1 Outer Panel 2 Heat Insulation Member 3 Air Convection Layer 4 Inner Panel 10 Heat Exchange Convection Wall 11 Inner Surface 12 Panel 13 Panel 14 Bent Flow Path 20 Insulated Outer Wall 31 Air Inlet 32 Air Outlet 50 Electrical / Communication Equipment Building 51 Outer Wall 52 Roof 53 Building floor 60 Ventilation fan 61 Shutter 70 Temperature sensor

Claims (5)

[Claims] 1. An outer panel made of a high heat flow-through material, a heat insulating member bonded to an inner surface of the outer panel, and an inner panel made of a high heat flow through material provided with a predetermined space from the heat insulating member. A heat exchange convection wall in which an air inlet is provided at one end of the predetermined space and an air outlet is provided at the other end to form an air convection layer. 2. An outer panel made of a high heat flow-through material, a heat insulating member adhered to an inner surface of the outer panel, and an inner panel made of a high heat flow through material provided with a predetermined space from the heat insulating member. A heat exchange convection wall having an air convection layer formed by providing an air inflow port at one end of the predetermined space and an air outflow port at the other end thereof is used as an outer wall and a roof of a building,
An air inlet of the air convection layer was provided near the corner of the building floor under the outer wall of the building, air outlets of the air convection layer were provided at a plurality of points on the building roof, and a ventilation fan was connected to the outlet. , Electrical / communication machinery and equipment buildings. 3. A temperature sensor is provided inside and outside the building, and an electric shutter is provided on the ventilation fan, and the temperature sensor indicates that the outdoor temperature is higher than the indoor temperature or the outdoor temperature is higher than the indoor dew point temperature. The electric / communication machinery / equipment building according to claim 2, wherein the ventilating fan is stopped and the shutter is closed when it is detected that the fan is descending. 4. The electrical / communication machinery / equipment building according to claim 2, wherein a panel having a punching process is provided at a joint between a roof and a side wall of the building and / or an outlet of the air convection layer. . 5. The electric / communication machinery / equipment building according to claim 2, wherein a curved flow path communicates with an air inlet of the air convection layer.