JPH07166624A - Energy conservation type curtain wall with built-in solar cell - Google Patents

Abstract

PURPOSE:To reduce cost by mounting a blower driven by solar cells into the air path of a curtain wall, fixing moisture-absorptive fibers onto the internal surface of the path and installing switch valves to the upper section and lower section of the path. CONSTITUTION:A blower 3 is driven by using DC currents obtained by solar cells 1 while the path of the outside air is formed by a switch valve 14 in a summer mode. The water of a drain pan 6 is sucked up to moisture-absorptive fibers 7 fixed onto the internal surface of an air gap 8, and the surface of a curtain wall 5 is kept under a wet state. The evaporation of moisture on the surfaces of solar-cell mounted equipment and materials 2 and a curtain wall 5 is promoted by driving the blower 3, and a large quantity of heat are discharged from a discharge opening to the outside. When the blower 3 is driven while the path of indoor air is formed by a switch valve 4 in a winter mode, indoor air is introduced from a suction port 9 to the air gap 8, and solar heat transmitted through the solar cells 1 and the mounted equipment and materials 2 is acquired and returned into a house again.

Description

Detailed Description of the Invention

[0001]

[Industrial application field] In the field of construction, it relates to air conditioning using solar energy for middle and high-rise office buildings, houses, etc.

[0002]

2. Description of the Related Art In the field of construction, various studies have been made on outer wall materials incorporating solar cells. However, normally, when using the electric power obtained from solar cells as an electric power system in a building, it is necessary to use an inverter device that converts direct current into alternating current, or to meet the power demand such as lighting at night. Requires an electricity storage system, etc., and is therefore an expensive system.

On the other hand, on the outer wall surface exposed to the sun, a light-colored material having a low absorptance of solar radiation is used or paint is applied in order to reduce the cooling load in summer, but a heat insulating material may be used depending on the case. is there.

In Japanese Patent Application No. Hei 5-206361, solar cells are already installed on the solar cell installation base material on the outer wall of the building.
A space along the outer wall is provided on the back side of the outer wall, a curtain wall material is arranged, a fan driven by electric power obtained by a solar cell is provided in the space, and a structure for circulating outside air or indoor air to reduce a heating and cooling load is provided. It is disclosed.

[0005]

Even if the cost of the solar battery cell is reduced, the cost of construction of the solar battery system is increased as long as the conventional auxiliary equipment such as a DC / AC converter or an electricity storage system is attached. Reduction is difficult.

Further, it is not convenient to limit the outer wall to a bright color that easily reflects the solar radiation, because the designer has a very small degree of freedom in selecting the outer wall material. Further, the use of a brightly colored outer wall material is effective in reducing the cooling load, but cannot reduce the heating load. Further, the use of the heat insulating material leads to an increase in the cost of the outer wall material.

Further, in the structure of the conventional energy-saving curtain wall with a built-in solar cell, the outer wall surface is not exposed to the solar radiation due to the solar cell surface, so the temperature of the outer wall surface in summer can be kept low, but a temperature lower than the outside air temperature can be obtained. In addition, since the heat supply surface is not directly exposed to solar radiation in winter, the heating capacity cannot be expected so much. The present invention has further improved the above problems.

[0008]

Means for Solving the Problems A solar cell is installed on a base material for installing a solar cell on the outer wall of a building, and a space along the outer wall is provided on the back side of the outer wall and air is provided between the solar cell and the curtain wall material. Forming a passage. Absorbent fibers are fixed to the inner surface of the air passage, and moisture is given by the water supply means. Excess water is drained from the drain pan through the drain pipe. In the summer mode, the outside air is sucked into the void and is again discharged into the outside air. As a power for circulating the air, a DC motor driven by electric power obtained by a solar cell is provided in the air gap, and a fan is connected to the DC motor. Further, in the winter mode, the intake port and the outlet port of the outside air are switching valves, and the indoor air is sucked and discharged indoors, and the gap along the outer wall is connected to the inside to absorb the solar radiation energy.

[0009]

[Function] Since the hygroscopic fiber is adhered to the air passage between the substrate on which the solar cells are installed and the curtain wall, the inner surface of the air passage absorbs moisture from the drain pan by the capillary theory and has a certain moisture content. Keep In the summer mode, the solar cell drives a fan by radiant energy to accelerate the evaporation of water, remove heat from latent heat to enhance the cooling effect, and prevent the power generation effect from decreasing due to the temperature rise of the solar cell.

In the winter mode, the indoor temperature rises due to the radiant energy, and the relative humidity decreases to contribute to humidification.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a vertical sectional view of the present invention applied in summer mode, and FIG. 2 is a vertical sectional view of the present invention applied in winter. The solar battery cell 1 is placed on the solar battery cell installation base material 2, and the curtain wall material 5 is installed on the back surface of the solar battery cell installation base material 2 with a gap 8 serving as an air passage. Suction port 9 communicating with outside air or indoors in the void 8
And a discharge port 10 are provided. The suction port 9 and the discharge port 10
Has a structure that can be switched by the switching valve 4 so as to circulate the outside air in the summer mode and the indoor air in the winter mode. Further, the fan 3 having a direct current motor connected to it driven by radiant energy is incorporated in the space 8. The hygroscopic fiber 7 and the like are fixed to the inner surface of the void 8 serving as the air passage, and moisture is sucked up from the drain pan 6 provided in the lower portion by the capillary principle to keep it always wet. Water is supplied by guiding the drain from the ceiling cassette, and the excess water is discharged from the drain pipe.

Summer Mode In FIG. 1, the direct current obtained by the solar cell 1 is used to drive the fan 3, and the switching valve 4 forms a passage for the outside air so that the outside air is discharged through the gap 8. . The moisture sucked up from the drain pan 6 keeps the surfaces of the solar cell 1 and the curtain wall 5 appropriately moist. When the fan 3 is driven, the evaporation of water on the surfaces of the solar cell installation equipment 2 and the curtain wall 5 is promoted, and a larger amount of heat can be discharged to the outside than when there is no water. This not only reduces the flow-through heat load that passes through the curtain wall 5, but also reduces the
The power generation efficiency will be improved by lowering the temperature.

Winter mode In FIG. 2, when the fan 3 is driven by using the direct current obtained by the solar cell 1, indoor air is guided to the air gap 8 to obtain solar heat transmitted through the solar cell 1 and the installation equipment 2. It is returned indoors again. When there is solar radiation in winter, the room temperature rises and the relative humidity decreases, so by filling the drain pan 6 with water, the air passing through the voids 8 surrounded by the hygroscopic fibers 7 contains moisture. , Can contribute to humidification.

[0014]

The effects of the present invention are as follows.

(B) The solar radiation heat received by the outer wall material such as the curtain wall is discharged and taken in by the fan driven by the solar cell only when there is solar radiation, and the energy saving effect of reducing the cooling / heating load is great.

(B) Since the hygroscopic fiber fixed to the air passage contains water, the water evaporates and takes away latent heat, so that the cooling effect can be further enhanced in the summer mode.

(C) In the winter mode, the relative humidity tends to decrease because the indoor temperature rises due to the radiant energy of the sun, but the moisture of the hygroscopic fibers evaporates, which contributes to humidification.

(D) The performance of the solar cell deteriorates when the temperature is high. According to the present invention, the solar battery cell-installed substrate is cooled by evaporating the water content of the hygroscopic fiber, and the power generation capacity of the solar battery is improved.

(E) Ancillary facilities such as a storage battery and an inverter are unnecessary and the cost is low. With the spread of the system of the present invention,
If the demand for solar cells will increase and the cost of solar cells will be further reduced, the use of natural energy that contributes to the global environment will be accelerated.

[Brief description of drawings]

FIG. 1 is an elevational view showing the summer mode of the present invention.

FIG. 2 is an elevational view showing the winter mode of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Solar battery cell, 2 ... Solar battery cell installation base material, 3 ... Fan, 4 ... Switching valve, 5 ... Curtain wall material, 6 ... Drain pan, 7 ...・ Hygroscopic fiber, 8 ... voids that serve as air passages, 9 ... suction port, 10 ... discharge port

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koji Iwai 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Within Kashima Construction Co., Ltd. (72) Inventor Akira Matsumoto 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Issue Kashima Construction Co., Ltd. (72) Inventor Noriyasu Sagara 2-191-1 Tobita-cho, Chofu-shi, Tokyo Kashima Construction Co., Ltd. Technical Research Institute (72) Inventor Akio Sagae 2-chome Tobita, Chofu-shi, Tokyo 19-1 Kashima Construction Co., Ltd. Technical Research Center

Claims (1)

[Claims] 1. A solar cell installation base material 2 on which solar cells 1 are mounted and a curtain wall material 5 are installed so as to be separated from each other to form a void 8 which serves as an air passage, and a hygroscopic fiber is formed on an inner surface of the air passage. A fan 3 which fixes 7 and moisturizes the hygroscopic fiber 7 by the water supply / drainage means and is driven by solar cell energy.
An energy-saving curtain wall with a built-in solar cell, characterized in that a switching valve 4 for circulating outdoor air or circulating indoor air is provided in the upper and lower parts of the void 8.