JPS649544B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a solar heat collection and storage device that is installed on a part of a wall of a building, collects solar heat, stores the heat, and radiates the heat indoors.

As a solar heat collecting means installed on a part of the wall of a building, a so-called Tromp wall is known, which consists of a heat collecting plate made of concrete or the like installed with a gap in parallel with a translucent flat plate such as a glass plate. be. However, since Trombe walls are usually installed on the south side of a building, they have drawbacks in terms of daylighting and ventilation, especially in Japanese residential structures that have wide openings on the south side. However, in recent years, the need to use natural energy such as solar heat has been emphasized in order to save energy in buildings, and there are hopes for the development of a simple means of collecting and storing heat that is suitable for Katsuwa's residential style.

The present invention was made against these backgrounds,
The translucent flat plate and the heat collection and storage board are composed of multiple element members, and in the winter when heat collection and storage are required, these are placed close together on a flat surface, while when heat collection and storage is not required, these members are moved in conjunction to The object of the present invention is to provide a solar heat collection and storage device that allows light to enter through gaps between members and allows ventilation both indoors and outdoors by configuring the transparent flat plate to be openable and closable.

An embodiment of the present invention will be described in detail below using the drawings.

FIG. 1 and FIG. 2 are a front view and a longitudinal sectional view showing an embodiment of the solar heat collection and storage device according to the present invention. FIG. 1 shows the heat storage plate in a closed state, and FIG. 2 shows the transparent flat plate and the heat storage plate in an open state.

In the figure, 1 indicates a heat collection and storage plate, and this heat collection and storage board 1 is supported by a support frame 3 via a rotating shaft 2. A gear 4 is provided connected to the rotating shaft 2,
It is connected to the threaded rod 5. The rod 5 is connected to the handle 6 by a bevel gear 7 or the like. With these mechanisms, the heat collection and storage plate 1 can be adjusted to any opening angle by operating the handle 6.

As the heat collection plate 1, any heat storage plate whose outer surface is treated to increase the solar heat absorption rate can be used to collect and store sunlight. Since heat dissipation is desirable, a heat storage time of at least 5 to 7 hours is required. However, in order to carry out such heat storage time by sensible heat storage based on the heat capacity and thermal conductivity of concrete, etc., the thickness thereof needs to be 20 cm or more, which is not practical. Therefore, in order to realize the method according to the present invention, it is desirable to use phase transition heat, so-called latent heat storage, during melting of metal salts, etc. A method is recommended in which a latent heat storage material prepared with a eutectic salt, a gelling agent for controlling convection, recrystallization, etc. is filled into a container shaped like a necessary heat collection plate. Good results can also be obtained by using calcium chloride as the latent heat storage material matrix. In this embodiment, the heat collection and storage plate 1 is constructed by filling a synthetic resin container with the latent heat storage material made of the aforementioned sodium sulfate hydrate as a base,
When heating is required in winter, etc., during the daytime, as shown in FIG. 2, the light-transmitting flat plate 31 such as glass and the heat collecting and storage plate 1 are closed, and sunlight 2 enters through the light-transmitting flat plate 31.
By collecting heat from 2 and heating the outer surface of the heat collection and storage board 1, the temperature on the indoor side (corresponding to the right side in the figure) of the heat collection and storage board 1 reaches its maximum temperature from 8:00 to 10:00 at night. It can be used at night by storing solar heat during the day.

Next, the operation of the heat collection and storage device of the present invention will be explained.
In the figure, the heat storage plate 1 is shown in a closed state, and a selective absorption film having a high absorption rate for the solar spectrum and a low radiation ability is attached to the side on which sunlight 22 enters, that is, the outer surface. On the other hand, the treatment of the inner surface is relatively arbitrary and can be any conventional finish that matches the indoor environment. When sunlight 22 enters the heat collection and storage plate 1 in a closed state, the surface of the heat collection and storage plate 1 is heated, and the latent heat storage body inside starts to melt from the outer surface and gradually melts to the inner surface. During this time, the transparent flat plate 31 is kept closed by the rotating shaft 32 in order to keep heat loss from the outer surface to a minimum. Furthermore, if low heat loss is intended, it is effective to use double translucent flat plates. The latent heat storage material in this example is adjusted to melt at around 30°C, and on a normal sunny winter day, the internal heat storage material will be in a nearly molten state by sunset. After sunset, the heat storage body begins to radiate heat toward the indoor side, and at this time, the internal surface is kept at around 30°C for a considerable period of time as the phase transition heat is radiated, making it possible to heat the room at night. Due to this operation, the phase transition temperature of the latent heat storage material ranges from 20℃, which is slightly higher than room temperature, to approximately 35℃, which is more efficient at collecting heat.
It is recommended to adjust between.

On the other hand, if you do not intend to use heat storage heating in the summer and intermediate seasons when heating is not required, or in the winter, turn the handle 6 to open the heat storage board 1 and the transparent flat plate 31 as shown in FIG. Natural light and ventilation can be brought into the room from the inside and outside. As mentioned above, introducing natural light indoors is particularly important in living spaces in Japan, and with this function, the heat collection and storage device of the present invention can reduce solar heat during the daytime in winter while maintaining a comfortable living environment. can be used for nighttime heating. That is, the transparent plate 31, which is movable by the rotating shaft 32, is opened by a mechanism similar to the gears 4, 7, rod 5, and handle 6 shown in FIG. It can be evaluated as an extremely comfortable function during the summer.

Of course, the translucent plate and the heat collection plate of the present invention are opened and closed independently, but in order to simplify the operation, the translucent plate and the heat collection plate are linked by operating a single handle. It can be a mechanism that can be opened and closed by

Although the embodiment of the present invention is mainly illustrated with the rotation axis in the horizontal direction, it is clear that the effects of the present invention described in the embodiments can be exerted even if the rotation axis is in the vertical direction. Furthermore, the method using gears and threaded rods illustrated as the mechanism for opening and closing the light transmitting plate and the heat collecting plate may be replaced by various other known methods, and the present invention is limited to the mechanism described in this specification. It's not a thing.

As described above, the present invention forms a plurality of heat collection and storage plates that are rotatable in a plane parallel to a plurality of divided light-transmitting flat plates through gaps, and the plurality of light-transmitting flat plates and This solar heat collection and storage device has a heat collection plate that can be rotated to any angle.It collects and stores solar heat during the day in winter, and can be used for room heating at night. It has the function of allowing sunlight and ventilation, and while maintaining a comfortable living environment, makes effective use of natural energy and contributes to energy conservation in buildings.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of the solar heat collection and storage device according to the present invention, FIG. 2 is a longitudinal cross-sectional view of the solar heat collection and storage device shown in FIG. 1, and FIG. 3 is the same as in FIGS. FIG. 2 is a vertical cross-sectional view showing the solar heat collection and storage device according to the present invention in an open state. 1... Heat collection and storage plate, 2... Rotating shaft, 3... Support frame, 4, 7... Gear, 5... Threaded rod, 6
...Handle, 31...Translucent flat plate.

Claims (1)

[Claims] 1. A transparent flat plate that is divided into a plurality of parts and can be rotated at any angle, and a transparent flat plate that is divided into a plane parallel to the arrangement plane of the transparent flat plates and can be rotated at any angle. A solar heat collection and storage device characterized by comprising a heat collection and storage plate. 2. The solar heat collection and storage device according to claim 1, wherein the heat collection and storage plate and the transparent flat plate rotate in conjunction with each other. 3. Claim 1 in which the heat collection plate comprises a heat storage body mainly made of a latent heat storage material having a transition point between 20°C and 35°C, and a container for storing this heat storage body.
The solar heat collection and storage device described in . 4. The solar heat collection and storage device according to claim 3, wherein the latent heat storage material has either sodium sulfate hydrate or calcium chloride as a base material.