JPS59145448A - Solar energy collecting and regenerative device - Google Patents

Abstract

PURPOSE:To radiate the solar ray on a collecting and regenerative element through a lens and to take the ray through a transmitting section, by providing a linear lens at the part of titled device where no transmitting section is formed. CONSTITUTION:Solar ray 12 is condensed in a horizontal linear shape on a point close to a focus 10 through a transparent plate 9 constituting a plurality of linear lenses 90. In this case, the linear lenses 90 are selected among a semicircular lens, a cylindrical lens or a linear Fresnel lens. The transparent plate 9 is usually placed in the perpendicular direction, but a better condensing result will be obtained by placing it with an angle of elevation beforehand. The altitude angle of sun depends on a time in a day and a season. A reflected light and a diffused light are not condensed through the lens 90, and therefore the part thereof reaches a room passing through a transmitting section 11 provided on a wall element. Besides, a light reflected or diffused after passing through the lens reaches the room. Thus, an adequate lighting is ensured.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a device that collects and stores solar heat to utilize it for heating a building.

Conventional Structure and Problems Conventionally, a tron 7' wall has been known as a solar heat collecting means. The tron 7' wall is shown in Fig. 1, and by collecting solar heat through a transparent cover 1 made of glass or the like onto a wall 2 as a heat collecting and storage body, it prevents heat loss from the wall to the outside air. , the air temperature in the entire space between the transparent cover 1 and the wall 2 is raised, and the daytime heat is acquired by the natural convection of the warmed air γ from the wall 2, which becomes larger after sunset due to the time lag due to the heat storage effect (page 3). This is intended to provide a heating effect through both heat radiation 8 to the indoor side.

However, this method uses a material such as concrete for the heat collector, which has the problem of blocking sunlight from entering the room. As an attempt to solve this problem, it has been proposed to construct the heat collector and storage body from a transparent material, but solid materials such as glass have problems in terms of heat storage performance and cost.

A method has also been proposed in which a water tank is used instead of a wall to store heat in the water, but this method requires prevention of heat convection in the water and has drawbacks in terms of maintenance and safety.

Purpose of the Invention The present invention provides a solar heat collection and storage device that solves the problem of daylighting in the Tron 7'' wall, maintains the original heat collection and storage function, and allows stable light into the room. It is.

Structure of the Invention The present invention provides a heat collector with a plurality of transparent parts, a linear lens corresponding to the part where the transparent part is not formed, and sunlight irradiates the heat collector through the linear lens, On the other hand, it is a solar heat collection and storage device that lets in light from the transparent part.

Example push-opening Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 2 is a sectional view of an embodiment of the heat collection and storage device according to the present invention. Transparent plate 9 that constitutes a plurality of linear lenses 9o
As a result, the sunlight 12 is focused in the vicinity of the focal point 10 in a horizontal line. Here, the linear lens 90 is a cylindrical lens or a cylindrical lens.

Alternatively, a linear Fresnel lens can be used.

At this time, the transparent plate 9 is usually installed in a vertical direction, but since sunlight enters at an angle of 41v, it is better to set the optical axis of the lens at an elevation angle in advance than to set it horizontally for better light collection. is good. Since the altitude angle of the sun changes depending on the time of day and the season, losses will occur no matter what angle the I/P angle is set, but due to the nature of this device, it is mainly used in winter, and when the angle of sunlight is low. Since the amount of effective solar radiation is small in the morning and evening, the altitude angle at which the light can be focused is at its lowest at around -+ o O, as shown in Sunlight 12 on page 6, on the morning and evening of the winter solstice, and at its highest, around noon from October to March. It is the highest altitude angle during the heating period, such as sunlight 12' in the central part of Japan, and is about 6o0. Therefore, it is recommended that the elevation angle be set between 300 and 40'.

Note that in summer, when the solar altitude angle is even higher, it is possible to block the sun's incidence by providing an appropriate canopy, so there is no need to consider it here.

The focal point 10 moves up and down depending on the time of day and the season as the solar altitude angle changes. Now, if the installation repetition pitch of the linear lenses 90 is D, and the distance between the transparent plate 9 having these lenses 9o and the heat collector 2 is t, then the focal point on the heat collector 2 will be , tied at t・5ir11o0 below the center of the linear lens 90, from October to March
At around noon on the moon, it focuses below t@5in60'. That is, t @ (!1lin 60' -51
If in 10') is smaller than the pitch D, there will be a horizontal band-shaped portion on the heat collector and storage body where no direct light is incident from any of the linear lens elements 90. The key point of the present invention is to use this part of the heat collecting and storage wall as the transparent part 6 page 11 to introduce sunlight scattering components into the room. The lower width of the transparent part 11 to be installed is d.
[If set, d≦D−t @ (sin 60°−sin 1o0)
If so, it becomes possible to prevent direct light from entering the transparent portion 11. Therefore, for given d and t, a simple calculation leads to the conclusion that the pitch D of the linear lens 12 should be approximately equal to or larger than 0.7t+d. Normal distance t is 50m to 100f
Since fl can be expected to obtain heat through good convection,
For example, when selecting the vertical width d of the transparent portion 11 to be 6 am, it is recommended to select the pitch D to be 8.5 cm or more. Of course, the band-shaped light-transmitting portions 11 can be provided not only in the horizontal band shape but also in any shape and in any number within the band shape.

Furthermore, if it is desired to make the lighting section 11 larger than the above-mentioned width, it is possible to do so by providing a means for moving the light-transmitting plate 11 up and down at appropriate intervals and adjusting the focal position according to the season. Of course, the heat storage section may be made movable and adjusted.

Now, sunlight is concentrated at the focal point in this way, but this is only direct light; scattered light scattered in the atmosphere and reflected light from other terrestrial objects are scattered light, so the lens 90 The light is not focused, so a part of it is transmitted through the light-transmitting section 1 provided on the wall.
1 and enters the room. In addition,
Since the reflected light and scattered light after the lens also enters the room, sufficient lighting can be obtained.

Scattered light usually reaches a peak of 60 to 100 kcal in the vertical plane during a storm, regardless of whether it is a clear day or a cloudy day, and the system as a whole can obtain stable lighting.

Similar to the Tron 7'' wall, the air between the transparent plate 9 and the heat collector 2 is led into the room through the open space provided in the heat collect and storage member 2, but the transparent section 11 is entirely left open. In some cases, if it is thought that a sufficient convective heat acquisition effect cannot be obtained, an appropriate balance can be achieved by filling the container with a transparent material.

The wall 2 may be made of ordinary wall materials with a large heat capacity such as concrete or brick, but according to the present invention, by concentrating sunlight, a wall surface temperature of about 100°C is sufficient. Therefore, a latent heat storage material with a relatively high transition point can also be used in the heat collecting section. By doing so, it is possible to produce a heat storage effect similar to that of a wall body with a small volume and weight. In that case, if the latent heat storage material is formed into a horizontal band and placed at the focal point, adjustment for seasonal variations in solar altitude can be easily made by simply moving it downward.

Effects of the Invention As described above, the present invention forms a plurality of linear lenses having focal axes in the horizontal direction on a transparent plate, and provides a solar heat collector wall behind the transparent plate. This is a solar heat collection and storage device that is translucent in areas other than the vicinity of the focal point of the near lens on the body, and can effectively collect and store sunlight while also bringing sufficient daylight into the room, saving energy for building heating. It is possible to obtain a wall surface that can save a lot of money and ensure sufficient lighting.

[Brief explanation of the drawing]

FIG. 1 on page 9 is a cross-sectional side view showing the structure of a conventional TRON 7' wall, and FIG. 2 is a cross-sectional view showing the structure of a solar heat collection and storage device according to the present invention. 2... Heat collector, 9... Transparent material with lens, 1°... Focal point of lens, 11...
Transparent part, 12, 12'...Sunlight/Name of agent Patent attorney Toshio Nakao and 1 other person 1st
figure

Claims (5)

[Claims] (1) A transparent plate formed with a plurality of linear lenses having focal axes in the horizontal direction, a solar heat collector and storage body installed near the focal point of the linear lens, and a solar heat collector and storage body installed near the focal point. . A solar heat collection and storage device, characterized in that a plurality of transparent parts are provided apart from the focal point position and adjacent to the heat collection and storage body. (2) The solar heat collection and storage device according to claim 1, wherein the transparent portion is a void formed in the solar heat collection and storage body. (3) The solar heat collection and storage device according to claim 1, wherein a part of the transparent part is a gap formed in the solar heat collection and storage body, and the other part is formed of a transparent material. (4) When the vertical repetition pitch of the linear lens is taken, the vertical width of the transparent part is d, the distance between the transparent plate and the solar heat collector is #, and the distance is t, so that 2 pages D≧0.7t+d. The selected solar heat collection and storage device according to claim 1. (5) The solar heat collection and storage device according to claim 1, wherein the solar heat collection and storage body is mainly composed of a latent heat storage material having a phase transition point between 20°C and 100°C.