KR20230015674A - A project window system harmonizing external landscape and solar power generation efficiency - Google Patents

Abstract

The present invention relates to a projected window system in which a solar panel is tiltable and a window is opened and closed in a projected manner. The projected window system harmonizing external scenery and solar power generation efficiency according to the present invention is a solar projected window system, which comprises: a window frame (10); a projected frame (20) opened and closed in a projected manner with respect to the window frame (10); a plurality of solar panels (30) provided to be tiltable on the projected frame (20); projecting means (40) for closing and opening the projected frame (20) in the projected manner with respect to the window frame (10); and tilt means (50) for tilting the solar panel (30). The opening angle Φ of the projected frame (20) with respect to the vertical direction and the tilt angle θ of the solar panel (30) with respect to the vertical direction are determined in a range that satisfies the conditions of the following equation for the altitude Ψ of the sun.

Description

A project window system that harmonizes external landscape and solar power generation efficiency {A PROJECT WINDOW SYSTEM HARMONIZING EXTERNAL LANDSCAPE AND SOLAR POWER GENERATION EFFICIENCY}

The present invention relates to a window in which a solar panel is installed and capable of generating solar power, and more particularly, to a project window system in which a solar panel is provided to be tiltable and the window is opened and closed in a project method.

In order to reduce greenhouse gas emissions, a plan to reduce the use of fossil fuels by producing and using energy in buildings itself has been proposed. Related to this, the so-called zero energy building (Zero Energy Building) means a building in which the sum of the energy used and produced energy of the building is ultimately zero (Net Zero) in advance, but energy consumption is considered in consideration of the current technology level and economic feasibility. It is common to mean a building that minimizes From a legal and institutional perspective, the Green Building Creation Support Act defines it as “a green building that minimizes the energy load required for buildings and minimizes energy consumption by utilizing new and renewable energy” and encourages its spread.

Means for realizing zero-energy buildings can be largely divided into active and passive technologies. Technologies include natural ventilation, high-performance windows, high airtightness, external insulation, natural lighting, and rooftop greening.

The present invention, as a technology belonging to the active technology, relates to an object that supplies solar energy to a building by including a solar panel in a window system.

The present inventor has continued research on solar window systems, and the results of the research so far are disclosed in 'Patent Document 1' to 'Patent Document 4'. 1 shows a solar window system common to 'Patent Document 1' to 'Patent Document 4'. The solar window system that is the subject of the present invention is a window frame (1), a project frame (2) whose upper end is hinged to the upper end of the window frame (1) and which is opened and closed in a projected manner as the lower end moves away from or closer to the window frame (1). ), a solar panel (3) provided inside the project frame, a project means installed between the window frame (1) and the project frame (2) so that the project frame (2) can open and close the project with respect to the window frame (1) (4); It is composed of a tilt means (5) installed on the project frame (2) so that the solar panel (3) can tilt open and close with respect to the project frame (2), and can control the solar power generation efficiency by properly adjusting the project and tilt. can

However, since the photovoltaic window system of this configuration is opaque, there is a problem in that it is difficult to perform the basic function of the window because the outside can hardly be seen or the ventilation efficiency is low if the focus is only on the photovoltaic power generation efficiency.

KR 10-2021-0077996 (2021. 6. 16.) KR 10-2021-0078008 (2021. 6. 16.) KR 10-2021-0078017 (2021. 6. 16.) KR 10-2021-0078026 (2021. 6. 16.)

The present invention has been devised to solve the above problems, and the problem to be solved by the present invention is to maximize the solar power generation efficiency while having basic functions of windows such as external view and ventilation to a certain level. It is to provide a project window system in which photovoltaic efficiency is harmonized.

A project window system in which external scenery and photovoltaic power generation efficiency are harmonized according to the present invention is a window frame; A project frame that is opened and closed in a project manner with respect to the window frame; A plurality of solar panels tiltably provided on the project frame; A solar project window system composed of a project means for opening and closing the project frame with respect to the window frame and a tilt means for tilting the solar panel, in the range that satisfies the condition of the following equation for the altitude Ψ of the sun It is characterized in that the opening angle Φ of the project frame in the vertical direction and the tilt angle θ of the solar panel in the vertical direction are determined.

The project window system in which external scenery and photovoltaic efficiency are harmonized according to the present invention can secure the opening of the window and at the same time maintain the photovoltaic power generation efficiency at a certain level or higher.

Therefore, it is possible to solve the problem of sacrificing essential functions of a window or sacrificing solar power generation efficiency for conventional solar power generation efficiency.

1 is a perspective view of a solar window system capable of projecting and tilting a solar panel;
Figure 2 is an operating state view from the side of the project window system in which the external landscape and solar power generation efficiency are harmonized according to the present invention
3 shows a situation in which a project window system in which external scenery and photovoltaic power generation efficiency are harmonized according to the present invention receives sunlight and creates shade
Figure 4 is a schematic diagram of Figure 3
Figure 5 is an enlarged view of the dotted line portion of Figure 4
6 is a diagram illustrating a case where there is a gap between solar panels
7 to 12 are external views according to the project and tilt degree of the project window system in which the external landscape and solar power generation efficiency are harmonized according to the present invention

Hereinafter, a project window system in which external scenery and photovoltaic power generation efficiency are harmonized according to the present invention will be described in detail with reference to the accompanying drawings.

The technical core of the project window system in which the external landscape and solar power generation efficiency are harmonized according to the present invention is the proper opening by the project of the window and the tilt of the solar panel and the harmony of the solar power generation efficiency, but for understanding, the window frame, etc. The basic configuration will be explained first.

Figure 2 is a side view of the operating state of the project window system in which the external landscape and photovoltaic efficiency are harmonized according to the present invention. The project window system in which external scenery and photovoltaic power generation efficiency are harmonized according to the present invention is a window frame 10, a project frame 20 that is opened and closed in a project manner relative to the window frame 10, and the project frame 20 can be tilted It consists of a solar panel 30, a project means 40 for opening and closing the project frame 20 relative to the window frame 10, and a tilt means 50 for tilting the solar panel 30.

The window frame 10 forms the outermost periphery of the project window system in which external scenery and photovoltaic power generation efficiency are harmonized according to the present invention, and is installed in a building, and the project window system in which external scenery and solar power generation efficiency are harmonized according to the present invention This is a component that allows it to act as a window. A threshold 11 protruding to the inside of the window frame 10 is provided so that when the project frame 20 is closed, watertightness and external air blocking are possible.

The project frame 20 has its upper end hinged to the upper end of the window frame 10 and its lower end moving away from or close to the window frame 10 to allow it to be opened and closed in a projected fashion. In addition, the solar panel 30 provided on the project frame 20 may be tilted to increase solar power generation efficiency or expand an external view.

The solar panel 30 is composed of a solar cell and a solar cell frame supporting the solar cell.

Project means 40 is a component installed between the window frame 10 and the project frame 20 so that the project frame 20 can open and close the project with respect to the window frame 10, and the tilt means 50 is a project It is installed on the frame 20 and is a component that allows the solar panel 30 to tilt open and close with respect to the project frame 20. The projecting means 40 and the tilting means 50 may be electrically driven or manually driven.

A support 60 for preventing the project frame 20 from shaking when the project frame 20 is far from the window frame 10 when the size of the project-type solar window system equipped with a fall prevention unit according to the present invention is somewhat large. ) may be further provided. The support part 60 is formed on the support 61, one end of which is rotatably connected to the project frame 20, the slide bar 63 rotatably connected to the other end of the support 61, and the window frame 10, It consists of a guide slit 65 for guiding the slide bar 63. Depending on the formation position of the guide slit 65, the stability of the project type solar window system equipped with the fall prevention unit according to the present invention can be increased. ) and the window frame 10 or the project frame 20 is destroyed, the project frame 20 may be excessively open relative to the window frame 10, and the upper end of the guide slit 65 is lower than a predetermined height. When formed as , since the rise of the slide bar 63 is limited to less than that, the opening of the project frame 20 can also be limited. Appropriate specifications of the support 60 determined by the present inventors are that the length of the support 61 is 1/4 to 1/3 of the height of the project frame 20, and the support 61 is rotatably coupled to the project frame 20 The position is 0.5 to 0.7 of the height of the project frame 20, and the position of the top of the guide slit 65 is 0.5 or less of the height of the window frame 10.

Next, the degree of opening of the project frame 20 and the degree of tilt of the solar panel 30, which are the core of the present invention, will be described. 3 shows a situation in which a project window system in which external scenery and photovoltaic power generation efficiency are harmonized according to the present invention receives sunlight and creates shade, the opening angle (Φ) of the project frame 20 in the vertical direction, It can be easily seen that the degree of opening when viewing the outside from inside the building and the photovoltaic power generation efficiency of the solar panel 30 will vary depending on the tilt angle θ of the solar panel 30 in the vertical direction. That is, in order to increase the photovoltaic power generation efficiency, the normal line of the solar panel 30 should do the sun (S) as much as possible, and the solar panel 30 at the bottom is shaded by the solar panel 30 at the top. It can be seen intuitively that it is good that the solar panel 30 is close to horizontal (so that the external field of view is widened) while it should not occur.

In order to know the degree of shadow generation between the solar panels 30, the tilt angle of the solar panel 30 with respect to the project frame 20 is required, since the relative angle of the solar panel 30 with respect to the project frame 20 , θ-Φ (hereinafter referred to as 'relative angle'), which is a value obtained by subtracting the open angle Φ of the project frame 20 in the vertical direction from the tilt angle θ of the solar panel 30 in the vertical direction. .

Since how much shading occurs on the solar panel 30 is related only to the mutual position and angle of the project frame 20 and the solar panel 30 and the altitude of the sun, the vertical length of the solar panel 30 is d, the sun Let Ψ be the altitude of

Figure 4 is a schematic diagram of Figure 3 for easy mathematical access to determine or range θ and Φ, which can be expressed as θ, Φ, d, and Ψ, and the solution to the problem is the solar panel 30 in FIG. It is the same as finding a condition that minimizes the shading at the top (the condition for shading is Ψ > θ, and the condition derived from the structure in which the solar panel 30 is tilted while opening the lower end with respect to the project frame 20 is θ Since ≥ Φ, the following description is made on the premise that the above conditions are satisfied).

The altitude Ψ of the sun is constant, a plurality of photovoltaic panels 30 are repeated, and the effect of the topmost photovoltaic panel 30-1 on the photovoltaic panel 30-2 below is the same as the sun below. Since it acts on the light panels 30-3, 30-4, ..., it is possible to solve the problem even with part A of FIG. 4.

Figure 5 is an enlarged view of the dotted line portion of Figure 4, the end when the uppermost solar panel 30-1 is tilted A, the end when it is not tilted B, the line connecting the sun and A is that If C is the closing point of the solar panel 30-2 below, it can be seen that the shaded portion of interest in the present invention is equal to the length of the line segment BC. And the length of line segment BC is equal to the sum of the lengths of line segment CD and the length of line segment DB, when D is the point where line segment BC meets when a perpendicular line is drawn down from A.

First, to find the length of segment DB, we need to know the length of segment AD that divides triangle ABC into two. However, since the uppermost photovoltaic panel 30-1 and the photovoltaic panel 30-2 below it are arranged parallel to each other, the line segment BC in A, that is, the length of the perpendicular to the photovoltaic panel 30-2 below it. And the length of the waterline from B to the uppermost solar panel (30-1) is the same. If E is the point where the perpendicular from B to the uppermost solar panel 30-1 meets the uppermost solar panel 30-1, the length of the segment AD = the length of the segment BE and the following [Equation 1] can indicate

The length of line segment DB can be obtained by multiplying the length of line segment AD by the value of the tangent of the right angle of side BD in right triangle ABD. The angle BAD equals 1/2 of the central angle of sector OAB. Therefore, the length of the line segment DB can be obtained by [Equation 2] below.

Next, the length of the line segment CD can be obtained by multiplying the length of the line segment AD by the value obtained by taking the tangent of the right angle of the side CD in the right triangle ACD. When a horizontal line is drawn from A, since the angle formed with the line segment AD is θ, the tangential angle of the side CD is Ψ-θ, and therefore the length of the line segment CD is as shown in [Equation 3] below.

And the area of shading (referred to as 'shading ratio' for convenience) of the uppermost solar panel 30-1 to the next solar panel 30-2 relative to the area of the next solar panel 30-2 is a line segment Since the length of BC is divided by the length d of the solar panel, it is as shown in [Equation 4] below.

That is, in order to simultaneously satisfy the objective of the present invention to secure the external landscape and solar power generation efficiency, the shading rate defined by [Equation 4] for a given solar altitude Ψ is made as small as possible, and the larger the value, the more the external landscape becomes. It is recommended that the tilt angle θ of the solar panel to be secured is as large as possible (at an angle less than 90°). According to the experiment of the present inventors, it was possible to increase the degree of window opening while maintaining the shading rate at 10% or less for the range of annual sun altitude (mid-summer altitude) Ψ in Korea, and the upper limit of [Equation 4] is 10% seems to be sufficient.

It is also possible to set the shading rate to 0 if a form closer to the actual case is considered. The foregoing embodiment is modeled as a case where the solar panels 30 are arranged without gaps in the project frame 20, but in reality, the solar panel 30 is surrounded or gripped by the frames around the outside of the solar panel ( 30), there is bound to be a gap between them. Figure 6 is a schematic diagram of the case where there is such a gap, and when the gap between the solar panels 30 is g, the shade formed in the gap does not reduce the photovoltaic power generation efficiency, so the hinge of the uppermost solar panel 30-1 The distance between the axis O and the hinge axis O' of the next solar panel 30-2, g+d, may be greater than or equal to the length at which the shade is formed by the uppermost solar panel 30-1.

Therefore, [Equation 5] below needs to be satisfied. The length of segment OO′ is equal to the length of segment OF + the length of segment FOO′ when F is the point where the line segment OO′ is perpendicular to the point A. The condition of Equation 5] can be arranged as in [Equation 6]. That is, when the condition of [Equation 6] is satisfied, the solar power generation efficiency is maximized, and if the tilt angle θ of the solar panel is increased as much as possible under the above limit, the object of the present invention can be achieved as much as possible.

For reference, FIGS. 7 to 12 are experimental images conducted to measure the sense of openness according to the project angle and tilt angle of the project window system in which the external landscape and solar power generation efficiency are harmonized according to the present invention, in order (project angle, tilt angle) = (10, 35), (10, 40), (20, 35), (20, 40), (25, 35), (25, 40). If the project angle is 25 degrees or the tilt angle is more than 35 degrees, it can be seen that it gives a sense of openness to some extent.

10 window frames 20 project frames
30 Solar Panels 40 Project Means
50 tilt means 60 support
61 support bar 63 slide bar
65 guide slits

Claims (3)

window frame 10;
A project frame 20 that is opened and closed in a project manner with respect to the window frame 10;
A plurality of solar panels 30 tiltably provided on the project frame 20;
A project means 40 for projecting and opening the project frame 20 with respect to the window frame 10, and
As a solar project window system composed of a tilting means 50 for tilting the solar panel 30,
The opening angle Φ of the project frame 20 in the vertical direction and the tilt angle θ of the solar panel 30 in the vertical direction are determined within a range that satisfies the condition of the following equation for the altitude Ψ of the sun A project window system that harmonizes the external landscape and the efficiency of solar power generation, characterized in that it is characterized by features.

The method of claim 1,
The open angle Φ of the project frame 20 and the tilt angle θ of the solar panel 30 relative to the vertical direction are determined so that the open angle Φ of the project frame 20 is maximized while satisfying the above equation. A project window system that harmonizes the external landscape and the efficiency of solar power generation, characterized in that it is characterized by features.
The method of claim 1,
A gap is formed between the plurality of solar panels 30, and the size of the gap is set so that a shadow is formed by the solar panel 30 in the gap. External scenery and photovoltaic efficiency are harmonized. project windows system.

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