Environmentally friendly building

Abstract

To provide an environmentally friendly building capable of effectively utilizing natural energy even on a small site, regardless of the roof slope.SOLUTION: In an environmentally friendly building 100, a parapet 40 is provided on a portion of the roof 10 of the building that does not form an eaves 12, and a building-integrated photovoltaic power generation panel 50 is incorporated on an outer peripheral surface side 41 of the parapet 40.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to environmentally friendly buildings. [Background technology]

[0002] Recently, environmental issues such as air pollution and global warming have been raised, and in the field of architecture, efforts are being made to design and construct buildings that are environmentally friendly and sustainable and that coexist with natural energy, that is, environmentally friendly buildings. In environmentally friendly buildings, by skillfully controlling heat and solar radiation and utilizing natural energy sources such as sunlight, it is possible to maintain a comfortable indoor environment while reducing the amount of fossil energy used.

[0003] One example of a commonly used environmentally friendly building is one with solar panels installed on the roof. However, for buildings located on small plots of land in urban areas, for example, the installation angle of the solar panels depends on the slope of the roof surface (roof pitch), and depending on the site conditions and solar radiation conditions, it can often be impossible to secure a surface area for mounting solar panels.

[0004] For these reasons, there is a demand for environmentally friendly buildings that can effectively utilize natural energy even on small sites, regardless of roof slope.

[0005] Here, Patent Document 1 proposes an environmentally friendly building that obtains electricity from solar panels installed on the roof surface and suppresses electricity consumption for heating and cooling. Specifically, the main roof has a south roof surface located on the south side and a north roof surface located on the north side, with the roof ridge sandwiched between them, the roof ridge is shifted to the north when the main roof is viewed from above, the roof slope of the south roof surface is smaller than that of the north roof surface, and solar panels are installed on the south roof surface, which has a larger area than the north roof surface. The top floor part below the south roof surface has a protruding part where the floor part of the top floor part protrudes further south than the floor part of the lower floor part, and the south roof surface is supported by the protruding part to have eaves protruding from the top floor part to the south. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2017-179911 A Summary of the Invention [Problem to be solved by the invention]

[0007] The eco-friendly building described in Patent Document 1 not only changes the slope of the roof surface on the south side and the north side of the roof ridge to relatively increase the area of ​​the roof surface on the south side, but also makes the floor of the top floor below the south roof surface protrude further south than the floors of the lower floors, which necessitates changes to the exterior wall structure of the building and necessitates a special structure for the entire building. Furthermore, even if this structure is applied, it does not guarantee the above-mentioned problem, that is, the effective use of natural energy even on a small site without being affected by the roof slope.

[0008] The present invention has been made in consideration of the above-mentioned problems, and aims to provide an environmentally friendly building that can effectively utilize natural energy even on a small site, regardless of the roof slope. [Means for solving the problem]

[0009] In order to achieve the above object, one aspect of the environmentally friendly building according to the present invention is as follows: A parapet is provided on the part of the roof of a building that is not the eaves. A building material-integrated solar power generation panel is incorporated on the outer peripheral surface side of the parapet.

[0010] According to this aspect, the building material-integrated photovoltaic power generation panel is incorporated on the outer peripheral surface side of the parapet that is installed in a portion that is not the eaves of the roof, so that the building material-integrated photovoltaic power generation panel that is not affected by the slope of the roof surface makes it possible to effectively utilize natural energy even on a small site. In addition, since the eaves of the roof are the portion that directs rainwater and the like to the outdoors, not providing a parapet here does not impede the drainage of rainwater. Here, "building material-integrated photovoltaic power generation panel is incorporated on the outer peripheral surface side of the parapet" means both a literal building material-integrated form in which the photovoltaic power generation panel is embedded and integrated in the building material that constitutes the parapet in advance, and a form in which the building material and the photovoltaic power generation panel are integrated after the fact by embedding the photovoltaic power generation panel in the building material that constitutes the parapet.

[0011] By applying this aspect, even buildings located on small sites can advantageously apply PPAs (Power Purchase Agreements), which can contribute to the wider adoption of environmentally friendly buildings.

[0012] Another aspect of the environmentally friendly building according to the present invention is The building is characterized in that the building-integrated solar power generation panels are incorporated into all of the multiple parapets that face each other in multiple directions in the building.

[0013] According to this aspect, by incorporating building material-integrated solar power generation panels into all of the multiple parapets facing multiple directions in a building, it is possible to form a building that can receive sunlight from various directions and has high power generation capacity.

[0014] Another aspect of the environmentally friendly building according to the present invention is The rear surface of the building-integrated solar power generation panel is connected to the attic space of the building through the inside of the parapet.

[0015] According to this aspect, the back surface of the building-integrated photovoltaic panel is connected to the attic space of the building through the inside of the parapet, so that an airflow design that links the parapet wall ventilation and the attic ventilation can be realized. Furthermore, since there is an attic space behind the building-integrated photovoltaic panel, heat and solar radiation can be provided to the attic space through the solar panel, which is preferable because it reduces the measures for attic insulation and solar radiation acquisition required for the living space below the attic space.

[0016] In another aspect of the environmentally friendly building according to the present invention, The parapet is provided with a ventilation layer communicating with the attic space, and an attic ventilation structure is formed in which air in the attic space is exhausted through a ventilation section at the top end of the parapet that communicates with the ventilation layer, The present invention is characterized in that heat generated by the building material-integrated solar power generation panel is discharged through the air layer and the ventilation section.

[0017] According to this embodiment, an attic ventilation structure that exhausts air from the attic space is formed by an air ventilation layer provided in the parapet that is connected to the attic space and a ventilation section at the top that is connected to the air ventilation layer, and the heat generated by the building material-integrated solar power generation panel is discharged through the air ventilation layer and the ventilation section, which is preferable as it enables both attic ventilation and the discharge of heat generated by the solar power generation panel to be achieved. Effect of the Invention

[0018] As can be understood from the above explanation, the environmentally friendly building of the present invention can effectively utilize natural energy even on a small site, regardless of the roof slope. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is a perspective view of an example of an environmentally friendly building according to an embodiment. [Diagram 2] 2 is a view taken in the direction of the arrow II in FIG. 1, and is a front view of the facade of an environmentally friendly building according to the embodiment. [Diagram 3]This is a vertical cross-sectional view of the parapet and attic space cut at the location of the building-integrated solar power generation panel, and is a diagram explaining the attic ventilation structure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, an example of an environmentally friendly building according to an embodiment will be described with reference to the accompanying drawings. In this specification and the drawings, substantially the same components are designated by the same reference numerals, and redundant description may be omitted.

[0021] [Environmentally friendly building according to the embodiment] An example of an environmentally friendly building according to an embodiment will be described with reference to Fig. 1 to Fig. 3. Fig. 1 is a perspective view of the example of an environmentally friendly building according to an embodiment, and Fig. 2 is a view taken in the direction of an arrow II in Fig. 1, which is a front view of the facade of the environmentally friendly building according to an embodiment. Fig. 3 is a vertical cross-sectional view of a parapet and an attic space cut at a position where a building-material-integrated photovoltaic power generation panel is located, which is a diagram for explaining an attic ventilation structure.

[0022] The environmentally friendly building 100 is a two-story building (detached house) equipped with a rectangular shed roof 10 in plan view. The illustrated example has a roof surface 11 that slopes downward from a ridge 15 on the facade of the building to an eaves 12.

[0023] Of the four edges of a gable roof 10 when viewed in plan, the three edges other than the edge corresponding to the eaves 12 are the edge corresponding to the ridge 15 and the edges corresponding to the two eaves 13, and all of these three edges are "parts that are not eaves edges."

[0024] A vertically extending parapet 40 is provided on the three non-eaves areas 13 and 15. In Fig. 1, various panels such as solar panels and photocatalyst panels (not shown) may be installed on the roof surface 11.

[0025] As shown in Fig. 1 and Fig. 2, among the three-way parapets 40A, 40B, and 40C, a building-integrated photovoltaic power generation panel 50 is incorporated into the outer peripheral surface 41 of each of the parapets 40A and 40B. Here, the "building-integrated photovoltaic power generation panel" is also called a BIPV (Building Integrated Photovoltaics) panel, and is a building-integrated panel in which the photovoltaic power generation panel is incorporated into the building material, unlike conventional solar panels placed on the roof. More specifically, it includes a literally building-integrated form in which the building-integrated photovoltaic power generation panel 50 is embedded and integrated in advance into the building material that constitutes the parapet 40, and a form in which the building material and the photovoltaic power generation panel are integrated after the fact by embedding the building-integrated photovoltaic power generation panel 50 in the building material that constitutes the parapet 40 later.

[0026] The building material-integrated photovoltaic power generation panels 50 may be incorporated into all of the parapets 40A, 40B, and 40C on the three sides, or the building material-integrated photovoltaic power generation panels 50 may be incorporated into only one of the parapets 40.

[0027] The eaves 12 of the roof 10 is a portion that directs rainwater and the like to the outdoors, so by not providing a parapet 40 here, the drainage of rainwater is not impeded.

[0028] 2, the building-integrated photovoltaic power generation panel 50 is disposed on the wall surface of the parapet 40 at a high position, avoiding balconies and rooms on the floor below, and is installed at a height of, for example, 6 m or more on a detached house. In the illustrated example, the building-integrated photovoltaic power generation panel 50 equipped with multiple (four in the illustrated example) power generation units 55 is installed on the wall surface of the parapet 40 at such a high position.

[0029] 3, the power generation unit 55 includes a plurality of (three in the illustrated example) inclined frames 52, the angles of which can be freely adjusted in the Y1 direction, inside a front glass 51. A photovoltaic power generation module 53 is mounted on the inclined frames 52, and a back sheet 54 is provided on the back of each inclined frame 52.

[0030] The angle of the inclined frame 52 can be adjusted within a range of, for example, 0 degrees (horizontal direction) to about 60 degrees. In addition, by incorporating the building material-integrated photovoltaic power generation panel 50 on the wall surface of the vertical parapet 40, photocatalytic glass or the like can be applied to the surface glass 51 on the surface of the power generation unit 55, which reduces the adhesion of rain stains and makes it possible to maintain good power generation efficiency.

[0031] As shown in FIG. 3 , the rear surface of the power generating unit 55 incorporated in the parapet 40 communicates with the internal hollow 42 of the parapet 40 .

[0032] In addition, there is an attic space 30 below the roof 10, and the attic space 30 communicates with the internal hollow 42 of the parapet 40. Therefore, the back surface of the power generating unit 55 communicates with the attic space 30 via the internal hollow 42 of the parapet 40.

[0033] Here, the exterior wall 20 supporting the parapet 40 includes an exterior material 21, an exterior wall panel 22, and a heat insulating material 23 filled inside the exterior wall panel 22. Also, below the attic space 30 is a ceiling 35, and below the ceiling 35 is a living room 38. And, above the ceiling 35, a heat insulating material 36 is also filled.

[0034] The parapet 40 has a ventilation layer 43 extending in the vertical direction, and the ventilation layer 43 is connected to a ventilation section 45 (ventilation hole) located below a coping 46 installed on the top edge 44 of the parapet 40.

[0035] In this way, the attic space 30 is connected to the outside through the ventilation layer 43 of the parapet 40 and the ventilation section 45, thereby forming an attic ventilation structure 60.

[0036] The attic ventilation structure 60 enables airflow in the X1 direction through the parapet 40, thereby enabling attic ventilation of the attic space 30.

[0037] In addition, the heat generated by the building material-integrated photovoltaic panel 50 is discharged to the internal hollow 42 of the parapet 40 in the X2 direction, and can be discharged through the ventilation layer 43 of the parapet 40 and the ventilation section 45 in the X3 direction.

[0038] In addition, since the back surface of the building-integrated photovoltaic panel 50 is connected to the attic space 30 of the building through the internal hollow 42 of the parapet 40, an airflow design can be realized in which the intra-wall ventilation of the parapet 40 and the attic ventilation are linked.

[0039] Furthermore, since there is an attic space 30 behind the building-integrated solar power generation panel 50, heat and solar radiation can be provided to the attic space 30 via the solar power generation panel, which is preferable as it reduces the measures required for attic insulation and solar radiation acquisition for the living room 38 located below the attic space 30.

[0040] The environmentally conscious building 100 can effectively utilize natural energy even on a small site, regardless of the roof slope.

[0041] In addition, the present invention is not limited to the configuration shown here, and may be implemented in other embodiments in which other components are combined with the configurations and the like of the above-mentioned embodiment. In this regard, the present invention may be modified within the scope of the gist of the present invention, and may be appropriately determined according to the application form.

[0042] For example, the illustrated environmentally friendly building 100 is a building with a gable roof, but may also be a building with a hip roof, flat roof, or the like. [Explanation of symbols]

[0043] 10: Roof (single-pitch roof) 11: Roof surface 12: Eaves 13: Eaves (parts that are not eaves) 15: Ridge (not the eaves) 20: Exterior wall 21: Exterior material 22: Exterior wall panel 23: Insulation 30: Attic space 35: Ceiling 36: Insulation 38: Living room 40, 40A, 40B, 40C: Parapet 41: Outer surface side 42: Internal hollow 43: Ventilation layer 44: Top 45: Ventilation section 46: Kasagi 50: Building material integrated solar power generation panel 51: Surface glass 52: Inclined frame 53: Photovoltaic power generation module 54: Back seat 55: Power generation unit 60: Attic ventilation structure 100: Environmentally friendly buildings

Claims

1. A parapet is provided on the part of the roof of a building that is not the eaves. This is an environmentally friendly building, characterized in that a building material-integrated solar power generation panel is incorporated on the outer peripheral surface side of the parapet.

2. 2. The environmentally friendly building according to claim 1, wherein the building-integrated photovoltaic panels are incorporated in all of the plurality of parapets that face each other in a plurality of directions in the building.

3. 3. An environmentally friendly building as described in claim 1 or 2, characterized in that a rear surface of the building-integrated solar power generation panel is connected to an attic space of the building through the inside of the parapet.

4. The parapet is provided with a ventilation layer communicating with the attic space, and an attic ventilation structure is formed in which air in the attic space is exhausted through a ventilation section at the top end of the parapet that communicates with the ventilation layer, 4. The environmentally friendly building according to claim 3, wherein heat generated by the building-integrated photovoltaic power generation panel is discharged through the air layer and the ventilation section.

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