JP2011140827A - Underground heat-storing house - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an underground heat-storing house provided with a heat collecting system by which the underground heat of a heat storing tank storing the heat during summer for use as heating energy after fall is effectively utilized by arranging the heat storing tank collecting the solar heat in a foundation of a house, and the energy needed to heat the water to an appropriate temperature as a water heater is saved by supplying the solar-heated warm water to the water heater. <P>SOLUTION: The underground heat-storing house 1 includes: a hybrid panel 2 comprising a solar power generation module and a solar heat collecting panel unified together for collecting the solar energy; and a heat-insulated heat storing tank 10 installed in the foundation of a building and filled with a heat storing material 6 for storing the solar heat. Piping for circulating, by a pump 4c, a heat medium collecting the solar heat in the hybrid panel 2 runs in a solar heat collecting tank 4 provided with a heat exchanger 4a for collecting the heat from the heat medium, and in the heat storing tank 10. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention is a ground equipped with a heat recovery system for storing heat by introducing and circulating solar heat collected by a solar heat collecting panel in a detached house into a heat insulating heat storage tank provided in the ground of the building foundation. It relates to medium heat storage houses.

  As a feature of the geothermal heat that is stored in the ground due to the solar thermal energy irradiated to the ground surface, the change in underground temperature up to about 2m below the ground is caused by summer "high temperature and solar radiation" heat that heats the ground surface It is known that the temperature of the whole underground rises in the middle of summer when it propagates inside, and there is a delay of about 3 months compared to the temperature change of the outside air.

  In the data representing the annual change in underground temperature of the Morioka Meteorological Observatory shown in FIG. 6, the temperature of the underground 2 m varies between about 7 to 18 ° C., and the underground temperature reaches a peak of 9 to 11 It is the moon, and it is stable at around 13 ° C throughout the year in places exceeding 4 m underground. For this reason, we have devised a technique to prevent the underground temperature, which has been raised by burning a small type fire in the hearth of the soil from all over the year, from cooling down even in winter, and use the increased underground temperature for heating in winter. The structure is a geothermal house called Chise, a traditional Ainu private house.

  Even in modern residential buildings, if this principle is used and a measure is taken not to cool the basement of the building when the season shifts to winter, a comfortable house that can be used for winter heating can be provided. Even in a modern house with high airtightness and high thermal insulation function, hot air is accumulated in the attic due to the summer sun and indoor convection. A method of storing heat is known.

  For example, in Patent Document 1, as shown in FIG. 7, a hybrid panel 100 in which a solar power generation module and a solar heat collection panel installed on a roof of a building that can be used in a sunny day in summer or a winter in snow, By installing a heat collection medium circulation path between the heat storage tank 119 installed in the vicinity of the building and the underground heat exchanger 120 installed in the ground, the circulation path of the heat collection medium heated by the hybrid panel 100 is provided. A solar heat and ground heat utilization system is disclosed in which three-way valves 121 and 122 are provided and the paths to the heat storage tank 119 and the underground heat exchanger 120 are switched to enable independent use or combined use.

  In addition, a solid foundation layer and a heat insulation layer are provided under the floor of the building, a heat storage layer is installed underneath it, and a heat transfer path that circulates the hot water heated by the solar hot water collector panel is provided to dissipate the solid foundation layer. A floor heating system that functions as a layer is disclosed (for example, see Patent Document 2).

JP 2002-81763 A JP 2009-216264 A

  However, in conventional solar energy and geothermal utilization systems, heat is stored in the heat storage tank from the solar heat collection panel installed on the roof during the daytime when the amount of heat collected during sunny weather is high, but it is sufficient for the limited heat storage tank. Since the temperature of the solar heat collection panel rises due to the heat that is not collected after the heat is stored, there is a problem that the room temperature rises due to the radiation heat of the solar heat collection panel entering the room from the back of the ceiling.

  In addition, in the case of a hybrid panel in which a solar power generation module and a solar heat collection panel are integrated, if heat that cannot be recovered is generated, the temperature of the solar heat collection panel rises and the back temperature of the solar power generation module rises There has been a problem in that the power generation efficiency is reduced by doing so. However, in order to provide a plurality of heat storage tanks in order to prevent the temperature rise of the solar heat collecting panel, there is a problem that the installation place and the equipment cost are required and the cost is increased.

  Furthermore, in the solar energy and geothermal utilization system disclosed in Patent Document 1, excessive heat is applied to soil and gravel layers in the ground in order to prevent the temperature of the hybrid panel from increasing the heat collected during clear weather in summer. The method of releasing and discarding is adopted, and the underground heat stored is not fully utilized.

  Further, in the floor heating system disclosed in Patent Document 2, solar heat is used for floor heating in the winter, but in the summer the ground heat is utilized by utilizing the fact that the temperature of the ground is lower than the outside air temperature. It is a system that circulates water with the exchanger and performs cooling operation, and it does not fully utilize the heat supplied from the solar heat collection panel in summer and collected and stored in the heat storage tank.

  The present invention has been made paying attention to the above-mentioned problems, and in order to reduce the heating and hot water supply energy that occupies half of the utility cost of the house, the solar heat is collected and stored in the ground in the foundation where the insulation of the house is constructed. By providing a heat-recovered heat storage tank that has been heat-insulated for the purpose of heating, the temperature of the heat storage tank that has been stored during the summer season, when the sunshine energy is at a maximum, especially in cold regions, is maintained to maintain the temperature. It can be effectively used as heating energy after the second half of autumn when a heat source for heating such as is required.

  In addition, hot water heated to a specified temperature or higher by a heat recovery system is connected as supplementary water to normal temperature water supply pipes such as tap water supplied to various water heaters, and the hot water supply temperature used for baths, showers, etc. By using hot water heated by solar heat as room temperature water supply, underground heat storage with a heat recovery system using solar heat that can greatly save the hot water supply energy required to raise the temperature to the set temperature of the hot water The purpose is to provide housing.

  In order to achieve the above-mentioned object, the present invention comprises the following configurations (1) to (4).

  (1) A solar panel that is placed on the roof of a building and collects solar energy and a solar heat collecting panel, and a solar panel that is installed in the ground of the foundation of the building to store solar heat An underground heat storage house having a heat storage tank filled with a heat storage material and heat-insulated, and a pipe for circulating a heat medium that collects solar heat by the hybrid panel using the pump, An underground heat storage house comprising a solar heat recovery tank including a heat exchanger for recovering heat from a medium, and a pipe circulating in the heat storage tank.

  (2) The underground heat storage house according to (1), wherein the pipe has a sheath structure in which an inner pipe to be installed is detachably replaceable.

  (3) The underground heat storage house according to (1) or (2), wherein the pipe is laid in a ninety-nine shape on a bottom surface of the heat storage tank.

  (4) When the solar heat recovery tank further includes a hot water pipe connected to a water supply path of the water heater by a water supply pipe and path switching means, and when the hot water filled in the solar heat recovery tank reaches a predetermined temperature, The underground heat storage house according to any one of (1) to (3), wherein the water supply route is changed to the hot water pipe by the route switching means.

  According to the underground heat storage house of the present invention, it is a house that is assumed to be used for a long-life house (the period of use as a house is 100 years or more), and photothermal energy related to living energy in the life cycle cost of the building The purpose is to reduce costs, and among them, the purpose is to reduce hot water supply energy and heating energy that account for more than half of the utility costs. By providing the structure for continuously ensuring the heat storage function for a long period of time, it is possible to provide an underground heat storage house having the effects shown in the following items (1) to (5).

  (1) According to the underground heat storage house of the present invention, in the heat recovery system for storing the heat collected by the solar heat collection panel in the underground heat storage tank, an efficient and long-term continuous heat storage function is ensured. Therefore, the solar heat recovery pipe that serves as a heat source for underground heat storage needs to ensure a reliable function for over 100 years. Since the replacement of the normally buried pipe is impossible in practice, the present invention has already been generally used in the construction method for the purpose of ensuring the function of the heat storage pipe over a long period of time. By adopting the “Saya tube method”, it is possible to freely update the heat source piping embedded in the foundation. This makes it possible to use the heat energy by solar heat recovery continuously for a long period (100 years or more).

  (2) In the present invention, in order to increase the heat storage capacity of the house base that is thermally insulated, the space between the upper surface of the foundation and the underground depth in the foundation is secured at an interval of about 2 m from the ground surface. The ground heat piping for the foundation is placed on the bottom of the foundation to increase the underground heat storage capacity, and the remaining soil that has been rooted for the foundation concrete installation is backfilled into the concrete foundation, so that no residual soil is generated as work waste. Conversely, soil having a large heat storage capacity can be effectively used as a heat storage material.

  (3) In the present invention, the heat stored in the ground of the house base part where the outer insulation is applied can be directly used as a heat source for floor heating and as a heat source for removing snow accumulated on the hybrid panel. .

  (4) In the present invention, not only the heat recovery system can be used alone, but also a hot water storage water heater using midnight power, a heat pump water heater using an air heat source, a gas-fired water heater, and an oil-fired water heater. Instead of room temperature water supply pipes such as tap water, it can be connected as make-up water to various hot water supply devices such as water heaters. It is possible to greatly save hot water supply energy used for hot water supply by reducing the temperature rise to the required hot water supply temperature by using room temperature water preheated by solar heat.

  (5) In the present invention, the heat recovery system and the base heat storage tank can be used independently, but a hybrid panel in which a light-through solar power generation module and a solar heat collection panel are combined in three dimensions is used. Thus, a limited roof area capable of recovering solar energy can be used effectively and efficiently. In addition, by efficiently collecting solar energy and reducing energy costs, it is possible to contribute to the reduction of global warming emissions such as carbon dioxide. It becomes possible to contribute to global environmental protection.

Image of underground heat storage house according to this example Piping system diagram of heat recovery equipment of underground heat storage house according to this example Hybrid panel configuration diagram Geothermal piping diagram laid in the base heat storage tank of the underground heat storage house according to this example Structural diagram of sheath pipe used for piping Map of annual underground temperature in Morioka City Conventional solar heat and underground heat utilization system diagram

  Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to examples.

  Embodiments of the present invention will be described with reference to the drawings. A heat recovery system that recovers and uses solar energy is a solar power generation module and a solar heat collection panel that are provided separately, or a hybrid panel that integrates a solar power generation module and a solar heat collection panel. In this system, sunlight is used for power generation, and at the same time, residual heat after solar heat is used for floor heating or hot water for hot water supply is circulated through a pipe buried in the ground to store heat in the ground. Utilizing the fact that a time delay of about 3 months occurs between the temperature rise of the heat source stored in the heat storage tank of the insulated base of the house and the temperature rise of the outside air during the summer season when the sunshine energy is maximum Thus, the heat stored in the base heat storage tank in the latter half of autumn when a heat source for heating is required is used effectively.

  FIG. 1 is an image diagram of an underground heat storage house employing a heat recovery system, and FIG. 2 is a piping system diagram of the heat recovery facility. In the figure, 1 is an underground heat storage house according to the present embodiment, 2 is a hybrid panel in which a photovoltaic power generation module and a solar heat collection panel are integrated, and 3 is the heat collected by the hybrid panel 2. It is a solar heat pipe that circulates a heat medium such as an oil heat storage material, a gel heat storage material, or tap water to be held. Reference numeral 4 denotes a solar heat recovery tank, which functions to transfer heat from the heat medium circulated by the pump 4c through the solar heat pipe 3 and the underground heat pipe 5 to the hot water supply water in the solar heat recovery tank 4 through the heat exchanger 4a. To do. When the hot water supply water heated in the solar heat recovery tank 4 reaches a predetermined temperature, the hot water supply water is sent to the three-way valve 19 that changes the water supply path of the water heater 18 through the hot water pipe 4b. 5 is a ground heat pipe installed on the bottom of the heat storage tank 10 in the base of the house, filled with a heat medium such as a gel-like heat storage material that holds heat or tap water, circulated, and releases heat to the heat storage soil 6. Or it absorbs heat. The solar heat pipe 3 and the underground heat pipe 5 employ a “sheath pipe structure” in which the inner pipe of the pipe can be replaced. 6 is a heat storage soil for heat storage, which is a soil that becomes a heat storage material that is backfilled in the concrete foundation using the residual soil rooted in the foundation work. Reference numeral 10 denotes a base heat storage tank below the house floor, and the depth of the base heat storage tank 10 is about 2 m. 11 is a heat insulating material, and the outer layer of the base heat storage tank 10 and the wall 13 is covered with the heat insulating material 11 for the outer heat insulating construction. 12 is a roof of the house, 13 is a wall of the house, and 14 is a floor flat on the upper surface of the foundation heat storage tank 10. 15 is a ventilation fan that circulates the warmed air gathered on the ceiling part indoors or outdoors, 16 is a ventilator for ventilation, 17 is a ventilation pipe, and 17 is a ventilation pipe 17a that circulates the air in the ceiling part indoors by the ventilation fan 15. And a ventilation pipe 17b that circulates outside air once through the ground and indoors. Reference numeral 18 denotes a water heater, which includes an electric three-way valve 19a that switches a hot water supply path from a hot water pipe 4b from the solar heat recovery tank 4 and a water supply pipe 18b from a hot water tank 18a attached to the water heater 18. Reference numeral 19 denotes a three-way valve, which includes an electric three-way valve 19a for switching the hot water supply path, an electric three-way valve 19b for switching the water supply path to the water pipe 20, and hot water from the solar heat recovery tank 4. Reference numeral 20 denotes a water pipe buried in the ground. GND is the ground surface around the underground thermal storage house.

  The heat insulation method used in the underground heat storage house 1 according to the present embodiment is to cover the outer side of the pillar of the building with the heat insulating material 11 and further cover the foundation heat storage tank 10 with the heat insulating material 11 outside. This is a construction method for a highly insulated and airtight house in which geothermal heat is prevented from escaping into the atmosphere through the wall 13.

<Heat recovery system>
In the heat recovery equipment system diagram of the underground heat storage house 1 shown in FIG.

  The solar energy in the summer season when the sunshine energy is maximum is recovered as electric power and heat by the solar power generation module 2a and the solar heat collecting panel 2b of the hybrid panel 2, and especially the heat is recovered by the solar heat pipe 3 through which the heat medium circulates. Heat is transferred to the hot water supply by being carried to the tank 4 and passing through the heat exchanger 4a in the tank. When the hot water supply water in the solar heat recovery tank 4 reaches a predetermined temperature, the electric three-way valve 19b, which is a path switching means, operates to switch the water supply path from the water pipe 20 to the hot water pipe 4b from the solar heat recovery tank 4 to supply hot water. Hot water supply water is supplied to the vessel 18. The solar heat recovery tank 4 is supplied with tap water that supplements the reduced amount from the water pipe 20 having a low water temperature, thereby efficiently exchanging heat.

  The heat medium dissipated in the solar heat recovery tank 4 is forcibly circulated by a pump 4c, which is a circulation device provided in the tank, and passes through the valve of the forward header 22 which is a connection portion with the underground heat pipe 5, so that the basic heat storage tank. The residual heat is further released by circulating through the 10 underground heat pipes 5. The heat storage soil 6 filled in the base heat storage tank 10 gradually increases in temperature by accumulating the released residual heat, but the temperature of the heat medium supplies the hot water filled in the solar heat recovery tank 4. Since the pipe 20 is buried in the ground, the water temperature is low and the heat transferred is extremely large. Therefore, the temperature rise of the thermal storage soil 6 due to the residual heat of the heat medium after radiating heat in the solar heat recovery tank 4 is slight. The effect is the same as burning a small fire all year round in the hearth of old clay.

  The heat medium radiated to the solar heat recovery tank 4 and the foundation heat storage tank 10 is cooled and passes through the return header 23 that connects the underground heat pipe 5 and the solar heat pipe 3, and the cooled heat medium becomes a solid foundation. The room is cooled by cooling the floor through the pipes for floor heating and cooling. After fulfilling the cooling function of cooling the room, the cooled heat medium is cooled by circulating through the hybrid panel 2 and exhibits the effect of preventing a decrease in power generation efficiency at high temperatures of the solar power generation module 2a. A heat circulation cycle of a heat recovery system is formed in which solar heat is collected again by the solar heat collecting panel 2b while circulating.

  In the heat recovery system during the winter season, the heat collected in the hybrid panel 2 installed on the roof of the sunshine energy during the summer season is stored in the base heat storage tank 10 of the underground heat storage house 1 and the winter season. The heat collected by the hybrid panel 2 during a fine period of time is used, or if necessary, the electric three-way valve 19a is switched to supply hot water from the water heater 18 to the solar heat recovery tank 4 and heat medium It can be used as a heat source that raises the temperature. As a result, the surface of the hybrid panel 2 is warmed by the heat source of the heat storage tank 10 and the heat medium warmed by the solar heat recovery tank 4 to remove snow accumulated on the hybrid panel 2, thereby generating power and collecting solar energy. Can be increased. To construct a heat recovery system that can greatly reduce the indoor heating and the utility cost of the water heater 18 due to the accumulated geothermal heat in the indoor thermal storage house 1 that is insulated outside during the winter season. Can do.

  The hot water heater 18 shown in FIG. 2 can use various types of hot water heaters such as a hot water heater using midnight power, a heat pump water heater using an air heat source, a gas-fired water heater, and an oil-fired water heater. Electric three-way valves 19a and 19b that can switch the water supply path between the water supply pipe 18b from the hot water storage tank 18a attached to the water heater 18 and the hot water pipe 4b of the solar heat recovery tank 4 are provided. By using hot water heated to a predetermined temperature by the heat exchanger 4a of the solar heat recovery tank 4, the temperature rise up to the hot water temperature required by the hot water heater 18 can be small, so hot water such as a bath or shower It is possible to greatly save the hot water supply energy used for the operation.

  FIG. 3 is an external view of a hybrid panel in which a solar power generation module 2a and a solar heat collecting panel 2b used in the hybrid panel 2 are integrated. The three-dimensional combination of the light-through solar power generation module 2a and the solar heat collecting panel 2b shown in FIG. 3 (a) allows the power used by the hot water heater 18 and the like of the underground heat storage house 1 together with solar heat recovery. It is possible to generate solar power that covers a part. Effectively and efficiently using a limited roof area, the solar energy is efficiently recovered, and it contributes to the reduction of global warming emissions such as carbon dioxide by reducing the utility cost. .

  As shown in the sectional view of FIG. 3B, the hybrid panel 2 has a structure in which a light-through solar power generation module 2a is disposed on the upper surface facing sunlight, and a predetermined space is provided between the module rear surface. The solar heat collecting panel 2b that circulates the heat medium that is opened and installed has a three-dimensionally combined structure. Solar power and heat energy are supplied to the underground heat storage house 1 by solar power generation using the solar power generation module 2a on the surface, and further, the heat collecting panel 2b collects sunlight and heat energy transmitted through the solar power generation module 2a. Heat recovery is performed with a heat medium circulating in the heat collecting pipe provided.

  The solar heat pipe 3 connected to the hybrid panel 2 warms the hot water supply water in the tank with the heat recovered through the heat exchanger 4a in the solar heat recovery tank 4 provided with the pump 4c for circulating the heat medium, The medium circulates in the underground heat pipe 5 and releases residual heat to the base heat storage tank 10. Note that there are various products in the structure of the hybrid panel 2, and the hybrid panel 2 shown in the present embodiment shows an optimum structure for explanation and does not limit the present invention.

  FIG. 4 is a piping diagram of the underground heat pipe 5 laid on the bottom surface of the foundation heat storage tank 10 of the underground heat storage house 1. The underground heat pipe 5 laid in the base heat storage tank 10 is constructed by a sheath pipe method in which the internal pipe can be exchanged, and after laying in a ninety-nine shape on the bottom surface of the base heat storage tank 10, a predetermined depth is set. The foundation heat storage tank 10 has an advantage that the remaining soil is reclaimed as the heat storage earth 6 of the heat storage material so that the remaining soil does not become industrial waste because the remaining soil rooted in the housing foundation is backfilled. The depth of the foundation heat storage tank 10 is composed of a concrete tank that is externally insulated and surrounded by a heat insulating material 11 having a predetermined depth of about 2 m. The soil 6 and the concrete tank function as a heat storage material having a high heat storage effect.

  In the observation data of underground temperature by the Morioka Meteorological Observatory, the temperature change in the underground is less than 4m deeper than the graph showing the monthly underground temperature change shown in Fig.6. A heat recovery system that utilizes the principle that if heat is supplied without interruption, it can ensure a stable temperature even at a shallow underground temperature of about 2 m, as in a deep place. The underground heat storage house 1 having the function can be provided.

  In addition, on the upper surface of the surface layer portion in which the base portion heat storage tank 10 is filled with the remaining soil, the underground heat pipe 5 that also serves as floor cooling and heating is laid in a ninety-nine shape in the concrete foundation of the flat floor 14. Thus, the floor 14 can function as a floor cooling / heating system that is cold in summer and warm in winter.

  The solar heat pipe 3 serving as a heat source for underground heat storage needs to maintain a reliable function without being deteriorated even when exposed to the ultraviolet rays of the sun for a long time, and is also embedded in the heat storage tank 10 in the foundation of the house. Since replacement of the intermediate heat pipe 5 is impossible in practice, the “sheath pipe method” that is already commonly used in the construction method is adopted to ensure the piping function for a long time. This makes it possible to detachably replace the inner pipe of the heat source pipe embedded in the foundation. The purpose of the solar heat pipe 3 and the underground heat pipe 5 laid by the sheath pipe construction method is a long-life house that can be used for 100 years or more, which the underground heat storage house 1 according to this embodiment aims at, so future deterioration is expected. The pipe portion to be formed has a sheath structure in which the inner pipe can be replaced, and a double pipe such as a cross-linked polyethylene pipe is used as the inner pipe.

  As an example, the sheath tube structure used for the solar heat pipe 3 and the underground heat pipe 5 shown in FIG. 5 is used for a cross-linked polyethylene double pipe as an inner pipe, so that the thermal expansion of the cross-linked polyethylene double pipe is small. Because it is a piping material that can be bent easily, maintains its shape and strength for a long period of time, and is not easily affected by hardening of the surface material or reduced flexibility due to ultraviolet rays, it is combined with a structure that has low frictional resistance on the sheath inner wall. The tube can be easily attached and detached. The cross-linked polyethylene double pipe structure of the inner tube is made by laser welding an aluminum coating that suppresses oxygen permeability to zero on the surface of the cross-linked polyethylene inner tube, and a polyethylene protective layer having an ultraviolet-resistant function on the aluminum coating. It has a double pipe structure in which the formed inner pipe is covered with an outer pipe that protects the inner pipe, and the inner pipe is detachably passed through the sheath pipe. In addition, there are various types of cross-linked polyethylene double pipes used in the “sheath pipe method” described in this embodiment, and this embodiment is optimally described and limits the present invention. It is not a thing.

  As described above, according to the underground heat storage house of the present invention, in the heat recovery system for storing the heat collected by the solar heat collection panel in the underground heat storage tank, the temperature of the heat source stored in the heat-insulated base of the house Then, a time delay of about 3 months occurs in the temperature of the heat storage tank that stores heat during the summer period when the sunshine energy is maximum. Therefore, it can be used effectively in the second half of autumn when a heat source for heating is required, and by providing a structure to ensure efficient and long-term continuous functioning, the base of a heat-insulated housing foundation is provided. The heat stored inside can be used directly as a heat source for floor heating.

  In addition, in order to increase the heat storage capacity of the house base that has been thermally insulated, the space between the upper surface of the foundation and the underground depth in the foundation is secured at an interval of about 2 m, and the underground heat pipe for heat storage Is placed on the bottom of the foundation and the remaining soil rooted in the foundation of the house is backfilled to recover heat using the heat storage effect of the remaining soil. Thereafter, heat can be continuously supplied to keep the temperature drop of the heat storage tank as small as possible, and the solar thermal energy recovered and stored using the residual soil having a large heat storage capacity of the heat storage tank can be used efficiently.

  The present embodiment is a building that assumes a long-lived house, and is a heat recovery system that aims to reduce utility costs related to living energy, and in particular, reduces hot water supply energy and heating energy that account for more than half of utility costs. Therefore, solar heat recovery pipes that serve as heat sources for underground heat storage need to ensure a reliable function for over 100 years, but replacement of normally buried pipes is impossible in practice. In the invention, in order to ensure the function of the heat storage piping over a long period of time, it is possible to freely update the heat circulation piping of the heat storage tank embedded in the foundation by adopting the `` Saya tube method '' Yes.

  Further, in this embodiment, not only the heat recovery system can be used alone, but also a hot water storage hot water heater using midnight power, a heat pump water heater using an air heat source, a gas fired water heater, and an oil fired hot water supply. Hot water heated to a predetermined temperature in the solar heat recovery tank can be connected as supplementary water to room temperature water used in various hot water supply devices such as a water heater. As a result, by using room temperature water pre-heated by solar heat, it is possible to reduce the temperature rise range up to the required hot water supply temperature and greatly save the hot water supply energy required for hot water supply.

  Furthermore, in this embodiment, a limited roof area that can recover solar energy is effectively utilized by three-dimensionally combining a heat recovery system, a basic heat storage tank, a light-through solar power generation module, and a solar heat collection panel. can do. By recovering solar energy efficiently and reducing energy costs, it is possible to contribute to the reduction of global warming exhaust gas including carbon dioxide, and heat recovery that can contribute to the global environment. An underground heat storage house with a system can be provided.

1 Underground thermal storage house 2 Hybrid panel 3 Solar thermal piping (corresponding to piping means)
4 Solar heat recovery tank 5 Geothermal piping (corresponding to piping means)
6 thermal storage soil (corresponding to thermal storage material)
10 Foundation heat storage tank (supports heat storage tank)
DESCRIPTION OF SYMBOLS 11 Heat insulating material 12 Roof 13 Wall 14 Floor 15 Ventilation fan 16 Ventilator 17 Ventilation piping 18 Water heater 19 Three-way valve (corresponding to path switching means)
20 Water pipe GND Ground surface

Claims (4)

A hybrid panel in which a solar power generation module that is placed on the roof surface of a building and collects solar energy and a solar heat collecting panel are integrated, and installed in the ground of the foundation of the building to store solar heat An underground heat storage house having a heat storage tank filled with a heat storage material and insulated.
Piping for circulating a heat medium for collecting solar heat with the hybrid panel by a pump, a solar heat recovery tank provided with a heat exchanger for recovering heat from the heat medium, and a pipe for circulating in the heat storage tank An underground heat storage house characterized by   The underground heat storage house according to claim 1, wherein the pipe has a sheath structure in which an inner pipe to be installed is detachably replaceable.   The underground heat storage house according to claim 1, wherein the pipe is laid in a ninety-nine shape on a bottom surface of the heat storage tank.   The solar heat recovery tank further has a hot water pipe connected to a water supply path of the water heater by a water supply pipe and path switching means, and when the hot water filled in the solar heat recovery tank reaches a predetermined temperature, the water supply path The underground heat storage house according to any one of claims 1 to 3, wherein the route switching means changes to the hot water pipe.

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