JP2001073477A - Solar heat wall having natural heat collecting rdiating function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use solar heat energy at a low cost by arranging a heat collecting plate arranged on a building wall face, an air layer formed between the heat collecting board and the wall, and a switching damper selectively connecting the upper or lower part of the air layer to each interior side or the outside air side. SOLUTION: For example, in a winter solar heat collecting mode B, if the outside air temperature is higher than that of a heat collecting plate while the air layer 8 upper part temperature is higher than a room temperature, upper and lower switching dampers 11, 12 are connected to the interior 5 side. In a winter ventilation preheating mode C, if the outside air temperature is higher than the heat collecting plate temperature and a temperature of the air layer 8 upper part is lower than a room temperature, the respective switching dampers 11, 12 are connected to the interior 5 side and the outside air side individually. In addition, preheated outside air is introduced by means of a ventilation fan so as to heat the interior air. In a summer solar radiation load radiating mode D, if the outside air temperature is lower than the heat collecting plate temperature, the switching dampers 11, 12 are connected to the outside air side, and the solar radiation heat load is radiated by funnel effect of the air layer 8 for lowering a room temperature. In this way, solar heat energy can be used through an inexpensive material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar heat wall having a natural heat collecting and discharging function utilizing solar heat energy.

[0002]

2. Description of the Related Art Heretofore, there has been known a solar heat wall in which a heat collecting plate is installed on a wall surface of a building, the solar heat energy is collected by the heat collecting plate, and guided into a room by a blower through an air duct.

[0003]

However, the above-mentioned conventional solar wall requires a blower, an air duct, and the like, and also requires an aluminum plate or an iron plate having fine holes as a heat collecting plate. In addition, it is expensive from the viewpoint of necessary equipment and material processing, and also has a problem in that solar thermal energy exceeding the blowing power can be obtained or thermal efficiency.

An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide a solar thermal wall having a natural heat collecting and discharging function capable of utilizing solar thermal energy at low cost.

[0005]

For this purpose, a solar heat wall having a natural heat collecting and discharging function according to claim 1 is formed between a heat collecting plate disposed on a wall surface of a building and the heat collecting plate and the wall. And a switching damper that selectively communicates an upper portion and a lower portion of the air layer with the indoor side or the outside air side, respectively. In the solar heat collection mode in winter, the upper and lower portions of the air layer communicate with the indoor side, respectively, and in the ventilation preheating mode in winter, the upper portion of the air layer communicates with the indoor side, and the lower portion communicates with the outside air, In the summer heat radiation mode, the upper and lower portions of the air layer are communicated with the outside air.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of a solar hot wall having a natural heat collecting and discharging function of the present invention. FIG. 1 (A) is a schematic sectional view, and FIGS. 1 (B) to 1 (D) show the operation of the present invention. It is a typical sectional view for explaining.

In FIG. 1A, a building 1 is composed of a floor 2, a wall 3, and a roof 4. On the wall 3, a heat insulating material 6 is installed on the room 5 side. A heat collecting plate 7 composed of a panel or the like is provided, and an air layer 8 is formed between the heat collecting plate 7 and the heat insulating material 6. Further, ventilation holes 9 and 10 are formed in the upper and lower portions of the wall 3, respectively, and an upper switching damper 11 and a lower switching damper 12 are disposed in the ventilation holes 9 and 10, respectively. These switching dampers 1
1 and 12 selectively connect the air layer 8 to the room 5 side or the outside air side, and may be switched manually, may be an automatic switching method using a shape memory alloy, or may be switched by a motor. It may be.

The operation of the present invention having the above configuration will be described. In the figure, indicates the room temperature, indicates the upper temperature of the air layer 8, indicates the outer surface temperature of the heat collecting plate 7, and indicates the outside air temperature in the shade.

FIG. 1B shows the solar heat collecting mode in winter, in which the outside air temperature is higher than the heat collecting plate temperature and the air layer upper temperature is higher than room temperature. When the solar radiation is strong and the room temperature is relatively small, switching is performed so that both the upper and lower switching dampers 11 and 12 communicate with the indoor side. The air layer 8 is heated by the solar heat energy collected by the heat collecting plate 7 and rises by the chimney effect, circulates the air on the indoor 5 side as shown by the arrow in the drawing, and heats the indoor air.

FIG. 1C shows a ventilation preheating mode in winter, in which the outside air temperature is higher than the heat collecting plate temperature and the air layer upper temperature is lower than room temperature. If the room temperature is relatively high even with this solar radiation, the upper switching damper 11
Is switched to the indoor side so that the lower switching damper 12 communicates with the outside air, and the outside air is drawn by the ventilation fan normally installed on the indoor side as shown by the arrow in the drawing, and the heat collecting plate 7
Preheats the cold outside air by the solar heat energy collected at the, and heats the indoor air.

FIG. 1 (D) shows a solar radiation load radiation mode in the summer season. When the outside air temperature is lower than the heat collecting plate temperature, both upper and lower switching dampers 11 and 12 are switched so as to communicate with the outside air. The solar radiation load absorbed by the wall is exhausted by natural force due to the chimney effect of the air layer 8, and the cooling load can be reduced or the room temperature can be reduced. When the temperature condition is other than the above condition, the neutral mode shown in FIG.

FIG. 2 is a diagram for explaining the effect of the above-mentioned summer solar radiation load heat radiation mode, and the load can be reduced by about 10% when ventilation is provided as compared with when there is no ventilation.

[0013]

As is clear from the above description, according to the present invention, a solar heat source having a natural heat collecting and discharging function capable of using solar heat energy at low cost without using auxiliary power using inexpensive materials. Walls can be provided.

[Brief description of the drawings]

FIG. 1 shows a solar hot wall 1 having a natural heat collecting and discharging function according to the present invention.
FIG. 1A shows an embodiment, and FIG.
1B to 1D are schematic cross-sectional views for explaining the operation of the present invention.

FIG. 2 is a diagram for explaining the effect of the present invention.

[Explanation of symbols]

 3 ... wall 7 ... heat collecting plate 8 ... air layer 11, 12 ... switching damper

Claims (2)

[Claims] 1. A heat collecting plate disposed on a wall surface of a building, an air layer formed between the heat collecting plate and the wall, and an upper portion and a lower portion of the air layer are selected to be indoor or outside air, respectively. A solar heat wall having a natural heat collection and exhaustion function, characterized by comprising a switching damper that communicates with the main body. In the solar heat collection mode in winter, the upper and lower portions of the air layer communicate with the indoor side, respectively, and in the ventilation preheating mode in winter, the upper portion of the air layer faces the indoor side and the lower portion faces the outside air. The solar heat wall having a natural heat collection / exhaust function according to claim 1, wherein the upper and lower portions of the air layer are communicated with outside air in the solar radiation heat radiation mode in summer.