JP5276416B2 - Heat collector, solar power generator, solar water heater, and solar water heater / cooler - Google Patents

Description

  The present invention relates to a heat collecting apparatus, and more particularly to a technology for constructing a heat collecting plate for efficiently collecting solar heat.

Conventionally, many solar heat collecting methods using solar heat have been proposed. For example, a household heat collecting device is generally known in which tap water is circulated through a heat collecting device provided on the roof of a house and water heated by the heat collecting device is used as bath water. However, in countries such as Japan where sunshine duration is relatively short, even with a heat collector, the temperature of water is rarely heated to high temperatures except during the summer. One factor is that the heat conversion efficiency of existing heat collecting devices is not very high.
As a conventional technique, Patent Document 1 discloses a heat collecting device that includes a metal fiber group layer in a heat exchange module and increases heat exchange area to increase heat conversion efficiency. However, since heat exchange is performed by passing the medium (liquid) through the metal fiber group layer, there is a possibility that the metal fibers are peeled off in the medium and clog the tube through which the medium flows.
Patent Document 2 discloses a technique in which a metal wool material is heated by solar heat and heated by flowing air through the metal wool material. However, although there is a heating effect in winter, there is a problem that in summer the temperature rises so much that it cannot be used.
Patent Document 3 discloses a heat collecting panel in which a curved heat collecting metal plate is made into a plain weave. However, there is a problem that it takes time to plain weave the heat collecting metal plate and is not suitable for mass production.
JP-A-10-111026 Patent No. 2762212 Japanese Patent No. 3544529

Conventional heat collectors cannot efficiently collect sunlight, and as a result, heat conversion efficiency cannot be increased. Moreover, in order to absorb the heat generated from sunlight, the surface was made black to suppress the reflection of heat as much as possible, but there was a limit to this and heat could not be stored efficiently.
Moreover, the prior art disclosed in Patent Document 1 requires a filter that removes metal fibers that are peeled off, and has a problem of clogging of the filter.
In addition, the conventional technique disclosed in Patent Document 2 exhibits a heating effect as it is in a country where the season is cold throughout the year. However, in Japan where there are four seasons, it cannot be used except during the winter, so it is permanently attached to the house. It is difficult to prepare.
Further, the conventional technique disclosed in Patent Document 2 has a problem that it takes time and effort to plain weave the heat collecting metal plate and is not suitable for mass production, so that the price of the heat collecting metal plate is increased.
The present invention has been made in view of such problems, and an object of the present invention is to provide a heat collecting apparatus that increases the heat collecting efficiency of sunlight and increases the contact area with the tubular body to increase the heat conversion efficiency. To do.
Another object of the present invention is to provide a heat collector with a woven-like structure made of linear metal and / or carbon to enable mass production and reduce the price.

In order to solve this problem, the present invention provides a light collecting means for collecting sunlight, a heat collecting means for collecting heat contained in the light collected by the light collecting means, and A medium pipe having therein a medium heated by heat collected by the heat collecting means; and a housing for integrating the light collecting means, the heat collecting means, and the medium pipe, The heat collecting means has a fabric-like structure made of metal and / or carbon and sandwiches the medium tube, and the heat collecting means uses warps and wefts made of the material. It has a configuration in which a plurality of units composed of a honeycomb-shaped honeycomb weave having a concave portion at the center are continuously provided .
The most significant feature of the present invention is that the heat collecting means is made of a metal or / and carbon as a woven fabric, and the medium tube is sandwiched and heated by the woven heat collecting means. Moreover, in order to concentrate sunlight efficiently on the heat collecting means, a light collecting means is provided. Thereby, the heat collection efficiency of sunlight can be improved, and the contact area with the tubular body can be increased to increase the heat conversion efficiency .
The heat stored in the metal wire or the carbon wire warms the air layer formed between the wires. Further, in the present invention, a quadrilateral pyramid-shaped honeycomb weave having a concave portion around the line weaving method is used, and a plurality of the shapes are connected as a unit to constitute the heat collecting means. Thereby, a large number of air layers are formed between the medium tube and the heat collecting means, and the air layers are warmed, so that the heat storage effect can be further enhanced.

According to a second aspect of the present invention, the condensing means is constituted by a linear Fresnel lens, and a plurality of the grooves of the linear Fresnel lens are arranged so as to be orthogonal to each other.
The linear Fresnel lens can be considered as a cylindrical lens formed into a flat plate shape. The cylindrical lens has a shape in which a cylinder is divided into two in the axial direction, and a surface having a curvature bends light, but since the axial direction has no curvature, the light does not bend. Therefore, the sunlight incident on the linear Fresnel lens becomes light that is condensed and spreads linearly in the axial direction. In this invention, it arrange | positions so that the groove | channel (axial direction) of the linear Fresnel lens which has such a property may mutually orthogonally cross. Thereby, the light which hits the heat collecting means can be collected without being biased.
A third aspect of the present invention provides the heat collecting device according to claim 1, the turbine rotating by the medium pressure heated by the heat collecting device, and rotating the rotor using the rotational force of the turbine to generate electric power. A generator and a recovery mechanism for recovering the medium after rotating the turbine and returning it to the heat collecting device are provided.
When water is used as the medium, the water heated by the heat collector becomes high temperature and the pressure increases. The turbine rotates by injecting the heated steam into the turbine. The shaft of the turbine is connected to a generator and generates electricity by rotating the rotor of the generator. Since the medium after rotating the turbine is still high temperature and high pressure, the pressure is once reduced and returned to the heat collecting apparatus. Thereby, it is possible to generate electric power with a simple configuration and without the need for external fuel supply.

A fourth aspect of the present invention provides the heat collecting apparatus according to claim 1, the compression apparatus that compresses the medium heated by the heat collecting apparatus, and heat generated from the medium compressed by the compression apparatus by heat exchange. And a heat storage tank for heating water.
As the heated medium is further compressed, the medium becomes even hotter. Heat is exchanged through this high-temperature medium and heated to be stored in a heat storage tank. Since the water in the heat storage tank is always heated, it can be supplied as hot water. Thereby, the hot water stored in the daytime can be stored and used in the heat storage tank.
According to a fifth aspect of the present invention, there is provided a water stop valve for stopping the medium heated by the heat collecting device according to claim 1, a compression device for compressing the medium heated by the heat collecting device, and compression by the compression device. A heating / cooling heat storage tank that heats water generated by heat exchange from the generated medium and / or cools exhaust heat sent from the indoor unit by a heat exchanger, the heating / cooling When the heat storage tank is used for cooling, the water stop valve is in a stopped state.
In the present invention, two tanks are provided, a water stop valve is provided in a medium pipe connecting the two tanks, and the water stop valve is opened for heating and hot water supply in winter and the two tanks are used for heating and hot water supply. In the summer, one tank is used as it is for hot water supply, and the water stop valve is closed, and the other tank is used for cooling by cooling the exhaust heat of the indoor unit with the water in the tank. Thereby, it can be properly used for heating / hot water supply and cooling in winter and summer respectively.

According to the present invention, the heat collecting means is configured in a woven shape using a metal wire and / or carbon wire, and the medium tube is sandwiched and heated by the woven heat collecting means to be used as the heat collecting means. In order to condense sunlight efficiently, the light collecting means is provided, so that the heat collection efficiency of sunlight can be increased and the contact area with the tube can be increased to increase the heat conversion efficiency.
Also, a quadrilateral pyramid-shaped honeycomb weave having a recess centered on the weaving method of the wire, and a plurality of the shapes are arranged as one unit to constitute the heat collecting means, so air is interposed between the medium tube and the heat collecting means. A large number of tanks are formed, and the air tank is warmed to further enhance the heat storage effect.
Moreover, the sunlight which entered the linear Fresnel lens becomes light that is condensed and spreads linearly in the axial direction. Since the grooves (axial direction) of the linear Fresnel lens having such properties are arranged so as to be orthogonal to each other, the light hitting the medium tube can be distributed without being biased.
In addition, since the steam heated by the heat collecting device is injected into the turbine to generate power by rotating the turbine, it is possible to generate power with a simple configuration and without the need for external fuel supply.
In addition, the heated medium is further compressed into a high-temperature medium, and water is heat-exchanged through this medium and heated and stored in the heat storage tank, so that the hot water stored in the daytime is stored in the heat storage tank. Can be used.

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. However, the components, types, combinations, shapes, relative arrangements, and the like described in this embodiment are merely illustrative examples and not intended to limit the scope of the present invention only unless otherwise specified. .
FIG. 1 (Aa) is a diagram schematically showing the positional relationship between a linear Fresnel lens (hereinafter simply referred to as a lens) constituting a heat collecting apparatus according to the present invention and a heat collecting plate. -B) is a figure which shows a mode that sunlight condenses on a heat collecting plate with a lens. The basic configuration of the heat collecting apparatus of the present invention includes a lens (light collecting means) 2 for condensing sunlight R, and a heat collecting plate (heat collecting) for collecting heat contained in sunlight condensed by the lens 2. 1), and the heat collecting plate 1 is heated to heat the medium in the medium tube to be described later. Accordingly, as shown in FIG. 1 (Aa), the heat collecting plate 1 and the lens 2 are arranged to face each other, and the distance between them is as shown in FIG. 1 (Ab). The light is condensed and arranged so as to focus on the heat collecting plate 1. The lens 2 is arranged so that the grooves 2c of the lenses 2a and 2b are orthogonal to each other as shown in FIG. As a result, the focal point Q by the lens 2a is irradiated with sunlight R in the lateral direction with respect to the heat collecting plate 1, and the focal point Q by the lens 2b is irradiated with sunlight R in the vertical direction with respect to the heat collecting plate 1. Get hit.

The linear Fresnel lens can be considered as a cylindrical lens formed into a flat plate shape. The cylindrical lens has a shape in which a cylinder is divided into two in the axial direction, and a surface having a curvature bends light, but since the axial direction has no curvature, the light does not bend. Therefore, the sunlight R incident on the lens 2 is condensed and becomes light that spreads linearly in the axial direction. In the present embodiment, the lenses 2a and 2b having such properties are arranged so that the grooves (axial direction) 2c are orthogonal to each other. Thereby, the light which hits the heat collecting plate 1 can be condensed without being biased.
FIG. 1 (Ba) is a diagram schematically showing the positional relationship between the Fresnel lens and the heat collecting plate constituting the heat collecting apparatus according to the present invention, and FIG. It is a figure which shows a mode that it has condensed on the heat collecting plate. Although a linear Fresnel lens is used as a lens in FIG. 1A, the present invention is not limited to this, and a Fresnel lens 3 may be used as shown in FIG.

FIG. 2 is a diagram showing a specific configuration of the heat collecting plate. The heat collecting plate 1 was configured such that a plurality of quadrilateral pyramid-shaped honeycomb weaves having a concave portion at the center using metal wires and / or carbon wires as warps and wefts. That is, the AA cross section of FIG. 2 shows a cross section of the concave portion P of the honeycomb weave, and the BB cross section shows a cross section of the highest position of the honeycomb weave. From this cross section, one honeycomb weave (hereinafter referred to as a honeycomb portion) is shaped like a quadrangular pyramid (pyramid shape) having four corners and a recess P at the center (details are shown in FIG. 3). Similarly, the DD cross section shows the cross section of the concave portion P of the honeycomb weave, and the CC cross section shows the cross section of the highest position of the honeycomb weave. A plurality of honeycomb parts can be connected to form a single heat collecting plate, and the wire can be set on a weaving machine for mass production.
That is, the heat stored in the metal wire or carbon wire warms the air layer formed between the wires. Further, in the present invention, a quadrilateral pyramid-shaped honeycomb weave having a concave portion around the line weaving method is arranged, and a plurality of the shapes are arranged as one unit to constitute the heat collecting plate 1. As a result, a large number of air layers are formed between the medium tube and the heat collecting plate 1, and the air layers are warmed, so that the heat storage effect can be further enhanced.

FIG. 3 is an enlarged view of the honeycomb portion of the heat collecting plate described in FIG. 3A is a front view, and FIG. 3B is a perspective view. In FIG. 3, the warp 5 and the weft 4 are represented as black and the weft 4 as white so that the warp 5 and the weft 4 can be distinguished. From FIG. 3 (a), the honeycomb weave is named because the shape of woven warp and weft becomes the shape of a honeycomb. The feature of the honeycomb weave is that the center P surrounded by the warp 5 and the weft 4 is a recess as shown in FIG. 3 (b), and is an inverted pyramid when viewed from the cross section as shown in the schematic diagram of FIG. 3 (c). ing.
FIG. 4 is a diagram showing a state of sunlight changing with time on one optical axis of the heat collecting apparatus of the present invention. In the figure, the movement of sunlight from 8 o'clock to 16 o'clock and the manner in which sunlight moves to the heat collecting plate 1 are shown. For example, sunlight at 8 o'clock enters from the right side of the lens 2 and is condensed by the lens 2 onto a of the heat collecting plate 1. Further, sunlight at 16:00 enters from the left side of the lens 2 and is condensed by the lens 2 onto b of the heat collecting plate 1. As a result, sunlight concentrates in the range of ab of the heat collecting plate 1 between 8 o'clock and 16 o'clock. Since such light is condensed on the heat collecting plate 1 from all surfaces of the lens 2, the sunlight is always collected on the entire surface of the heat collecting plate 1 as a whole. As a result, the inside of the case 6 covered with the heat insulating material 7 is maintained at a high temperature by the radiant heat of the heat collecting plate 1.

FIG. 5 is a diagram showing the relationship between the angle at which sunlight is incident on the lens and the position at which the sunlight is condensed on the heat collecting plate. FIG. 5A shows a case where the incident angle is orthogonal to the heat collecting plate 1, and the light is collected at a substantially middle point a of the heat collecting plate 1. FIG. 5 (b) shows a case where the incident angle forms an angle of 30 ° with the heat collecting plate 1, and the light is condensed on b below the midpoint of the heat collecting plate 1. FIG. 5 (c) shows a case where the incident angle forms an angle of 60 ° with the heat collecting plate 1, and the light is condensed on c below the midpoint of the heat collecting plate 1. Thus, it can be seen that the lens 2 moves the condensing point to the entire heat collecting plate 1 following the movement of sunlight. That is, it is possible to efficiently collect sunlight without moving the heat collecting device with respect to the movement of the sun in the day.
FIG. 6 is a diagram showing the movement of the condensing point for each season when the heat collecting device is tilted. FIG. 6 (A) shows the case of solar altitude during the winter solstice, and FIG. 6 (A-a) shows the case where the heat collecting device is inclined by 30 ° (roof surface, etc.), and the sun incident from a low angle. It can be seen that sunlight is sufficiently efficiently collected on the heat collecting plate 1 by the light collected by the lens 2. FIG. 6A-B shows a case where the heat collecting device is fixed to the vertical wall surface, and in this case also, it can be seen that sunlight incident from a low angle is efficiently collected by the lens 2. FIG. 6 (B) shows the case of the solar altitude at the time of summer to south and middle, and FIG. 6 (B-a) shows the case where the heat collecting device is inclined by 30 ° (roof surface, etc.). It can be seen that the sunlight is sufficiently concentrated on the heat collecting plate 1 by the light collected by the lens 2 with respect to the sunlight. FIG. 6B-b shows a case where the heat collecting device is fixed to the vertical wall surface. In this case, too, sunlight incident from a high angle is efficiently collected by the lens 2. Thus, even if the heat collecting apparatus of the present invention is installed not only on the roof of the house but also on the wall surface, it can efficiently collect sunlight throughout the year.

FIG. 7 is a diagram for explaining how radiant heat is generated by the heat collecting apparatus of the present invention. FIG. 7A shows a case where the sun orientation at 9 o'clock changes to the sun orientation at 15 o'clock. As described above, sunlight in each time zone is collected by the lens 2 and collected on the heat collecting plate 1 to heat the heat collecting plate 1. As described with reference to FIGS. 2 and 3, the heat collecting plate 1 is made by weaving a metal wire and / or a carbon wire, so that the surface has fine irregularities. Thereby, the condensed light is irregularly reflected on the surface, so that the light (heat) reciprocates between the lens 2 and the heat collecting plate 1 many times to uniformly heat the surface of the heat collecting plate 1. . As a result, the heat collecting plate 1 can efficiently convert the light collected by the lens 2 into heat, and can radiate the radiant heat 14 from the back surface of the heat collecting plate 1.
FIG. 7B is a diagram for explaining how the radiant heat of the heat collecting plate is conducted to the medium tube. Radiant heat 14 is generated from the back surface of the heat collecting plate 1. In the present invention, this radiant heat heats the internal medium (generally water) through the medium tube 15. Accordingly, the medium tube 15 is suitably made of copper, aluminum or the like having a good thermal conductivity. Further, the larger the contact area between the heat collecting plate 1 and the medium tube 15, the better the heat conductivity. Therefore, in the present invention, the medium tube 15 is configured to be sandwiched between the heat collecting plates 1 (details will be described later).

8 is a diagram showing the positional relationship between the heat collecting plate and the medium tube constituting the heat collecting apparatus of the present invention. 2 and 3, it has been explained that the heat collecting plate 1 is formed with the concave portion P by honeycomb weaving, and as a result, the air layer increases and the heat retaining effect is high. Further, since the focal point of the lens 2 is almost at the highest position Q of the heat collecting plate 1, the temperature at the point Q is the highest. Then, the temperature of the recess P is slightly lowered because the focus is slightly shifted, but the area to which light is irradiated increases correspondingly. In the present invention, the medium tube 15 is configured to be sandwiched between the heat collecting plate 1 formed of a honeycomb weave and the heat collecting plate 1a formed of a plain weave. As a result, the medium tube 15a is in close contact with the heat collecting plate 1, but the medium tubes 15b and 15c are not in close contact with the heat collecting plate 1, but the temperature at point Q is the highest and is heated by the air layer. There is no difference. Needless to say, the housing includes the lens 2, the heat collecting plate 1, and the medium tube 15 as a unit. And the inside of a housing | casing is comprised with the heat insulating material in order to interrupt | block from external temperature.
FIG. 9 is a schematic diagram showing a schematic configuration of the solar thermal power generation apparatus of the present invention. This solar thermal power generation apparatus 50 rotates the rotor using the heat collecting apparatus 30 described with reference to FIGS. 1 to 8, the turbine 32 rotated by the medium pressure heated by the heat collecting apparatus 30, and the rotational force of the turbine 32. A power generator 33 that generates electric power, a power conditioner 34 that aligns the electric power generated by the power generator 33 to a predetermined voltage, and an expansion tank 35 that lowers the pressure to recover the medium after rotating the turbine 32; And a check valve 36.
That is, when water is used as the medium, the water heated by the heat collecting device 30 becomes a high temperature and the pressure increases. The turbine 32 rotates by injecting the heated steam to the turbine 32. The shaft of the turbine 32 is connected to a generator 33, and the rotor of the generator 33 is rotated to generate power. Since the medium after rotating the turbine 32 is still high temperature and high pressure, the pressure is once reduced and returned to the heat collecting device 30. Thereby, it is possible to generate electric power with a simple configuration and without the need for external fuel supply.

FIG. 10 is a schematic diagram showing a schematic configuration of the solar water heater of the present invention. The solar water heater 51 includes a heat collector 30 described with reference to FIGS. 1 to 8, a compressor 38 that compresses a medium heated by the heat collector 30, and heat generated from the medium compressed by the compressor 38. A heat storage tank 39 for exchanging heat to heat water, a pressure reducing valve 40 for reducing the pressure of the medium stored in the heat storage tank 39, an expansion tank 41 for expanding the reduced pressure medium, and check valves 37 and 42, , And is configured.
That is, if the heated medium is further compressed, the medium becomes even hotter. Heat is exchanged through this high-temperature medium and heated to be stored in the heat storage tank 39. Since the water in the heat storage tank 39 is always heated, it can be supplied as hot water. Thereby, hot water stored in the daytime can be stored in the heat storage tank 39 and used.
FIG. 11 is a schematic diagram showing a schematic configuration of the solar hot water supply / cooling / heating device of the present invention. The solar water heater 52 includes the heat collecting device 30 described with reference to FIGS. 1 to 8, the compression devices 38 and 45 that compress the medium heated by the heat collecting device 30, and the medium compressed by the compression devices 38 and 45. A heat storage tank 39 for exchanging heat generated from the water to heat water, a pressure reducing valve 40 for reducing the pressure of the medium stored in the heat storage tank 39, an expansion tank 41 for expanding the reduced pressure medium, and a check valve 37, 42, 44, a water stop valve 43 for stopping hot water from the medium pipe 31 in the summer, a heat storage tank 46 for heating and cooling, and a heat exchanger 47 for exchanging heat with the air conditioner. Composed.

  Next, the operation of the solar hot water supply / air conditioning apparatus of the present invention will be described. In hot water supply / heating, the water stop valve 43 is opened and the medium passes through both the compressors 38 and 45 and is sent to the heat storage tanks 39 and 46, respectively, to heat the water in each heat storage tank. Next, at the time of cooling, the water stop valve 43 is closed, the heat storage tank 39 has the same action as in winter, and the heat storage tank 46 exchanges heat with the heat exchanger 47 in the heat storage tank 46 from the exhaust heat sent from the indoor unit. Cooled by the water in the heat storage tank 46. Thereby, the water in the tank is heated and sent to the heat storage tank 39 by the bypass 48 and further heated to be used for hot water supply.

(Aa) is a diagram schematically showing the positional relationship between the linear Fresnel lens and the heat collecting plate constituting the heat collecting apparatus according to the present invention, and (Ab) is a diagram in which sunlight is collected on the heat collecting plate by the lens. FIG. 5B is a diagram schematically showing the positional relationship between the Fresnel lens and the heat collecting plate constituting the heat collecting apparatus according to the present invention, and FIG. It is a figure which shows a mode that is condensed on the heat collecting plate with the lens. It is a figure which shows the specific structure of a heat collecting plate. It is an enlarged view of the honeycomb part of the heat collecting plate demonstrated in FIG. 2, (a) is a front view, (b) is a perspective view, (c) is a schematic diagram. It is a figure which shows the mode of the sunlight which changes with time to one optical axis of the heat collecting apparatus of this invention. (A) thru | or (c) is a figure which shows the relationship between the angle which sunlight injects into a lens, and the position which condenses on a heat collecting plate. (Aa) thru | or (Bb) are the figures showing the movement of the condensing point for every season when the heat collecting apparatus is inclined. (A) is a figure which shows the case where it changes to the sun azimuth | direction at 9 o'clock from 9 o'clock, (b) is a figure explaining a mode that the radiant heat of a heat collecting plate is conducted to a medium pipe | tube. It is a figure showing the positional relationship of the heat collecting plate and medium pipe | tube which comprise the heat collecting apparatus of this invention. It is a schematic diagram which shows schematic structure of the solar thermal power generation apparatus of this invention. It is a schematic diagram which shows schematic structure of the solar thermal water heater of this invention. It is a schematic diagram which shows schematic structure of the solar hot water supply air-conditioning apparatus of this invention.

Explanation of symbols

  1 heat collecting plate, 2 linear Fresnel lens, 3 Fresnel lens, 4 weft, 5 warp, 6 case, 7 heat insulating material, 8 focal plane, 9-12 sunlight, 13 heat collecting plate surface irregular reflection, 14 radiant heat, 15 medium tube , 30 Heat collecting device, 31 Medium pipe, 32 Generator, 34 Power conditioner, 35 Expansion tank, 36 Check valve, 37, 42, 44 Check valve, 38 Compressor, 39 Heat storage tank, 40 Pressure reducing valve, 41 Expansion tank, 43 Water stop valve, 45 Compressor, 46 Heat storage tank, 47 Heat exchanger, 48 Bypass pipe, 50 Solar power generator, 51 Solar water heater, 52 Solar water heater / heater

Claims (5)

A light collecting means for collecting sunlight, a heat collecting means for collecting heat contained in the light collected by the light collecting means, and a medium heated by the heat collected by the heat collecting means. A medium pipe provided inside, and a housing for integrating the light collecting means, the heat collecting means, and the medium pipe,
The heat collecting means, metals, or / and comprises the woven structure of the carbon as a raw material, has a structure sandwiching the medium pipe,
The heat collecting means is provided with a structure in which a plurality of units composed of a quadrilateral pyramid-shaped honeycomb weave having a concave portion at the center, which are configured using warp and weft yarns made of the material, are provided . Thermal device.   The heat collecting apparatus according to claim 1, wherein the condensing unit includes a linear Fresnel lens, and a plurality of the linear Fresnel lens grooves are arranged so as to be orthogonal to each other. A heat collecting device according to claim 1 or 2, and a turbine rotated by the medium pressure, which is heated by said population heat device, a generator for generating electric power by rotating a rotor using the rotational force of the turbine, the A solar power generation apparatus comprising: a recovery mechanism that recovers the medium after rotating the turbine and returns the medium to the heat collector. A heat collecting device according to claim 1 or 2, the heat storage for heating a compressor for compressing the medium heated by said population heat device, heat water by heat exchange generated by the medium compressed by the compressor A solar water heater, comprising a tank. Generated from a water stop valve that stops the medium heated by the heat collecting device according to claim 1, a compression device that compresses the medium heated by the heat collecting device, and a medium compressed by the compression device A heat storage tank for heating / cooling that heats water by heat exchange or / and cools exhaust heat sent from an indoor unit by a heat exchanger;
When using the heating / cooling heat storage tank for cooling, the water stop valve is set to a stopped state, and the solar hot water supply / cooling / heating device is characterized.

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