WO2014035036A1

WO2014035036A1 - Apparatus including wind guide for converting building wind power to heat source

Info

Publication number: WO2014035036A1
Application number: PCT/KR2013/005559
Authority: WO
Inventors: 이장호
Original assignee: 군산대학교산학협력단
Priority date: 2012-08-27
Filing date: 2013-06-24
Publication date: 2014-03-06
Also published as: KR101193271B1; CN104641104A; CN104641104B

Abstract

The present invention relates to an apparatus including a wind guide for converting building wind power to a heat source, which includes the wind guide, a rotor, a wind power heater, and a heat collection tank. The wind guide has: an upper end portion that has a front portion and a rear portion which are coupled to each other in such a manner that the respective ends thereof are in contact with each other and both extend opposite each other above the rotor; a fixing unit that supports and fixes the upper end portion to a building; and an adjustment drive that is capable of adjusting the length and the elevation angle of the front portion and the rear portion respectively. The elevation angles of the front portion and the rear portion are adjusted according to a longitudinal direction ratio between the front portion and the rear portion in accordance with the direction of the wind. The rotor is disposed below the upper end portion. The wind power heater heats a heat medium by means of the rotation of the rotor. The heat medium heated by the wind power heater is collected in the heat collection tank. The apparatus for converting building wind power to a heat source according to the present invention uses the wind guide and allows the wind to flow at a high speed into the rotor of the apparatus for converting building wind power to a heat source so that heating efficiency of the apparatus for converting wind power to a heat source is increased. Also, the shape of the wind guide is optimized according to the environment in which the wind guide is installed so that more heat can be produced using the same amount of wind. Also, an eddy current is produced following the rotation of a permanent magnet so that the permanent magnet arranged in the rotor in a heat medium heating structure is optimized and energy conversion efficiency is increased.

Description

Building wind power generator with wind guide

The present invention relates to a building wind energy source having a wind guide, more specifically, the front portion and the rear portion is raised in accordance with the longitudinal ratio of the front portion and the rear portion coupled in the form of rising in the opposite direction from the top of the rotor blades The present invention relates to a building wind energy source having a wind guide for adjusting the angle to increase the heat generation efficiency of the wind power source.

In general, a wind power generation system using wind force (wind power) converts kinetic energy of air into other energy by air flow (wind), and usually rotates a wing (propeller) using air flow (wind). It is a system to get electricity by driving a generator.

In case of using the kinetic energy of the wind as thermal energy such as heating, the wind power generation system needs to convert the kinetic energy of the wind into electrical energy and convert the electrical energy into thermal energy, which causes considerable heat loss during energy conversion. Since the system (device) according to the energy conversion must be provided, there is a disadvantage that requires a huge cost and the maintenance cost of the system (device).

In addition, in the case of changing the kinetic energy of the wind into electrical energy has a disadvantage that the efficiency is reduced by being given a range that can generate electricity according to the number of revolutions of the wing. That is, the electricity has a frequency of 50Hz or 60Hz, and if you want to obtain electricity in this frequency band is affected by the number of revolutions of the blade. Therefore, when the blade rotation speed is low or high, the electrical energy can not be obtained, thereby reducing the efficiency of energy conversion.

In order to compensate for this drawback, as proposed in Korean Patent No. 0554218, the kinetic energy of wind power is converted into mechanical rotational energy to rotate the permanent magnet, and the eddy current generated by rotating the permanent magnet is converted from the heating element to Joule heat. Disclosed is a wind power generator for acquiring thermal energy without generating electricity such as an energy converter capable of providing energy to a heat medium outside the heating element.

In general, the rotor of the wind power generator is installed on the roof of the building. Thus, the building wind power generator installed on the roof of the building is installed without considering the shape of the roof, and does not have a separate facility for collecting wind to the rotor of the building wind power generator. Therefore, there is a problem that the heat generation efficiency is low.

An object of the present invention is to increase the heat generation efficiency of the wind power generator by allowing the wind to flow into the rotor of the building wind power generator using a wind guide at a high speed.

Another object of the present invention is to provide a building wind energy source that can produce a lot of heat even with the same wind by optimizing the shape of the wind guide according to the environment in which the wind guide is installed.

It is another object of the present invention to provide a building wind energy source that improves energy conversion efficiency by optimizing the permanent magnets arranged in the rotor in a structure in which eddy currents are generated in the rotation of the permanent magnets to heat the heat medium.

Building wind power source device according to the present invention for achieving the above object includes a wind guide, a rotor, a wind heater and a collecting tank. The wind guide has a top part having a front part and a rear part which are joined in contact with each other in the form of rising from the top of the rotor, a fixing part for supporting and fixing the upper part to the building, and a length and an elevation angle of the front part and the rear part. It is provided with an adjustable drive unit that can be adjusted, the rising angle of the front and rear parts is adjusted according to the longitudinal ratio of the front and rear parts according to the wind traveling direction. The rotor is located at the bottom of the top. The wind heater heats the heating medium according to the rotation of the rotor. The heat collecting tank collects the heat medium heated by the wind heater.

It is preferable that a temperature control valve is installed between the wind heater and the collecting tank to control the flow of the heating medium according to the temperature of the heating medium.

The wind guide may have an elliptical cross section of the fixing part, and when the longitudinal ratio of the front part and the rear part is 2: 1, the rising angle of the front part is 25-35 °, and the rising angle of the rear part is 5 ~. It may be 10 °, and when the longitudinal ratio of the front part and the rear part is 1: 1, the rising angle of the front part and the rising part of the rear part may be the same, and the upper surface thereof is formed flat and the wind inflows. The front end is provided with an inclined surface rising toward the upper surface, and may further include a lower end spaced apart from the upper end and attached to the building located below the rotor.

The rotor may be plural. The plurality of rotors are each separated by a plurality of fixing parts. The rotor may be connected to and fixed to the wind guide.

The wind heater includes a rotor having a permanent magnet that generates eddy currents as the rotor rotates, and a heating element that generates eddy currents converted to Joule heat by the rotation of the rotor, and is heated while the heating medium moves inside the heating element. Permanent magnets are arranged one by one along the outer circumferential surface of the rotor by the size of the permanent magnet, forming a plurality of lines along the length of the rotor.

The wind heater may heat the heating medium by frictional heat generated by the rotation of the rotor, or heat the heating medium through cavitation generated between the rotating body and the heating medium rotating according to the rotation of the rotor.

The present invention collects the wind to the rotor of the wind power generator by adjusting the rising angle in accordance with the length of the front and rear of the upper end portion and increases the speed of wind when passing through the rotor to increase the heat generation efficiency of the wind power generator. It can increase. In addition, the present invention can adjust the length and the rising angle of the front portion and the rear portion of the wind guide according to the position and the direction of the wind guide is installed can increase the heat generation efficiency of the wind power source.

The present invention is to form a fixed section of the wind guide of the oval cross section to prevent the deterioration of the heat generation efficiency due to the installation of the fixing portion and rather increase the heat generation efficiency, the rotor of the wind power source is connected and fixed to the wind guide It is possible to minimize the effect of vibration and noise caused by the rotation of the rotor on the building.

The present invention improves the energy conversion efficiency by optimizing the permanent magnets arranged in the rotor in the structure in which the eddy current is generated in the rotation of the permanent magnet to heat the heat medium.

1 is a perspective view showing a building wind power source according to an embodiment of the present invention.

2 is an overall configuration diagram showing a building wind power source according to an embodiment of the present invention.

3 is a view showing the upper end of the wind guide of the building wind power source according to an embodiment of the present invention.

4 and 5 conceptually show that the wind guide of the building wind power source according to an embodiment of the present invention is installed in a building.

Figure 6 is a view showing an elliptical fixing portion of the wind guide of the building wind power source according to an embodiment of the present invention.

7 is a view conceptually illustrating that the front and rear portions of the upper end of the wind guide of the building wind energy source according to an embodiment of the present invention adjust the length and the rising angle.

8 is a view showing the building wind power source of the embodiment the rotor is fixed to the upper end of the wind guide in the present invention.

9 is a perspective view showing an example of a wind heater of the building wind power source according to an embodiment of the present invention.

10 is a front cross-sectional view of FIG. 9.

11 is a front sectional view showing another example of the wind heater of the building wind power source according to the embodiment of the present invention.

12 is a plan sectional view of FIG.

13A to 13G are views conceptually illustrating various wind heaters of a building wind heat source according to an embodiment of the present invention.

FIG. 14 is a diagram illustrating a shape in which only the front part, the rear part, and the roof (or the lower part) of the wind guide of the building wind energy source according to the embodiment of the present invention are set and analyzed.

15 is a diagram showing an inspection volume and boundary conditions for grasping flow characteristics.

FIG. 16 is a diagram showing grid generation for an analysis shape. FIG.

FIG. 17 is a view showing flow distribution between the wind guide and the roof for the 16 cases described in Table 3. FIG.

FIG. 18 is a diagram showing that the SN ratio of the analysis results of the 16 cases described in Table 3 is analyzed by the tower characteristic. FIG.

19 is a view showing a comparison of the flow distribution between the wind guide and the roof of case 1, case 9, case 12.

20 is a chart showing the performance index of the wind guide obtained from Equation 1 for 16 cases.

FIG. 21 is a view showing an analysis shape for determining an increase in flow rate according to a change in an elevation angle of a front part with a length ratio of 1: 1 in a front part and a rear part.

It is a figure which shows the flow distribution in the case of changing the elevation angle of a front part.

FIG. 23 is a view showing experimental conditions for determining a figure of merit of a wind guide according to a shape of a fixing part; FIG.

24 and 25 are diagrams illustrating boundary conditions and mesh information applied to an experiment for determining a figure of merit of a wind guide according to a shape of a fixing part.

FIG. 26 and FIG. 27 are diagrams illustrating numerical analysis results of an experiment for determining an index of performance of a wind guide according to a shape of a fixing part.

28 is a diagram illustrating a figure of merit of the wind guide according to the shape of the fixing part.

29 (a) to (d) are views of a magnet arrangement comparative example and a magnet arrangement embodiment for analyzing torque according to a magnet arrangement of a wind heater of a building wind energy generator according to an embodiment of the present invention.

30 is a configuration diagram of a test apparatus for testing torque and heating efficiency using a wind heater according to the magnet arrangement of FIG. 29.

31 (a) and 31 (b) are diagrams illustrating the formation of magnetic force lines according to the magnet arrangement of FIG. 29.

32 is an operational state diagram of the building wind power source according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. At this time, it is noted that the same components in the accompanying drawings are represented by the same reference numerals as possible. In addition, detailed descriptions of well-known functions and configurations that may blur the gist of the present invention will be omitted. For the same reason, in the accompanying drawings, some components are exaggerated, omitted or schematically illustrated.

1 is a perspective view showing a building wind power source according to an embodiment of the present invention (piping and collecting tank is omitted), Figure 2 is a general configuration diagram showing a building wind power source according to an embodiment of the present invention. As shown, the building wind power source 1000 includes a wind guide 1100, a rotor 1200, a wind heater 1300, a collection tank 1400, a piping line 1500, a pump 1600, and temperature control. Valve 1700.

The wind guide 1100 collects the wind to the rotor 1200 and accelerates the speed of the wind when passing through the rotor 1200, and includes an upper end 1110, a fixing unit 1120, and an adjustment driving unit. The rotor 1200 is positioned below the upper end 1110 and rotates by wind. The wind heater 1300 heats the heat medium according to the rotation of the rotor 1200. In the heat collecting tank 1400, the heat medium heated by the wind heater 1300 is collected. The pipe line 1500 and the pump 1600 allow the heat medium to circulate between the heat collecting tank 1400 and the wind heater 1300, and the pipe line 1500 includes the heat medium supply pipe 1510 and the heat medium recovery pipe 1520 and return. The tube 1530 is provided. The temperature control valve 1700 controls the flow of the heat medium according to the temperature of the heat medium.

3 is a view showing the upper end of the wind guide of the building wind power source according to an embodiment of the present invention, Figures 4 and 5 is a wind guide of the building wind power source according to an embodiment of the present invention is installed in a building 6 is a diagram illustrating the elliptical fixing portion of the wind guide of the building wind energy source according to an embodiment of the present invention. 3 to 5, the wind guide 1100 includes an upper end 1110 and a fixing part 1120. The upper end 1110 has a front portion 1111 and a rear portion 1112. The front portion 1111 and the rear portion 1112 are coupled in a form in which one end is in contact with each other and rises. The front portion 1111 and the rear portion 1112 may be plate-shaped, but is not limited thereto. The ends of the front portion 1111 and the rear portion 1112 are rounded to reduce wind resistance and reduce the occurrence of turbulence. As shown in (a) of FIG. 3, the upper side surface of the upper end 1110 may have a V shape while forming a predetermined inclination to a portion where the front portion 1111 and the rear portion 1112 are in contact with each other. In this case, the overall weight of the upper portion 1110 is reduced, so that the load is less applied to the fixing portion 1120, and it is possible to save the material is economical. In this case, the volleyball water may be formed in a portion that is in contact with each other if necessary. The upper side surface of the upper end 1110 may be formed flat, as shown in FIG. The upper side shape of the upper end 1110 may vary depending on the installation environment.

The upper end 1110 is fixed to the base B such as a roof of a building through the fixing unit 1120. The fixing part 1120 may be formed in an oval shape. More precisely, the fixing part 1120 may have an elliptical cross section that is horizontal to the wind traveling direction. When the fixing part 1120 is formed in an elliptical shape, there is an effect that the wind passes faster through the rotor 1200 (shown in FIGS. 1 and 2) positioned between the fixing parts 1120.

A rotor 1200 (shown in FIGS. 1 and 2) of the building wind power generator is located under the upper end 1110. 5 and 6, three or more fixing parts 1120 may be installed according to the width of the upper end part 1110, and the plurality of rotors 1200 may be disposed between the plurality of fixing parts 1120. May be located. As described above, when each rotor 1200 is separated by the plurality of fixing parts 1120, one rotor may be prevented from being affected by flow disturbance and interference caused by rotation of another rotor.

The plurality of fixing parts 1120 may have different sizes. In particular, the fixing parts (1120a, 1120b) for supporting both ends of the side surface of the upper end 1110 may be formed to be thicker than the fixing portion located in the inner side to be able to stably support the upper end (1110).

The wind guide 1100 is installed such that wind is introduced into the front portion 1111 and discharged to the rear portion 1112. However, since the direction of the wind is variable, the direction of the wind flowing into the wind guide 1100 may be changed, but is installed in consideration of the direction of the main wind at the position where the wind guide 1100 of the building wind heat generator is installed.

In this embodiment, the rising angle θ1 of the front portion 1111 and the rising angle θ2 of the rear portion 1112 are determined according to the longitudinal ratios Lf: Lr of the front portion 1111 and the rear portion 1112. Adjust The longitudinal ratio Lf: Lr between the front portion 1111 and the rear portion 1112 is a length ratio when the length of the front portion 1111 and the length of the rear portion 1112 are projected onto the reference plane. The rising angles θ1 and θ2 of the front part 1111 and the rear part 1112 are angles at which the front part 1111 and the rear part 1112 make up the reference plane. Here, the reference plane refers to a plane perpendicular to the fixing unit 1120.

7 is a view conceptually illustrating that the front and rear portions of the upper end of the wind guide according to the embodiment of the present invention adjust the length and the rising angle. When the building to which the wind guide 1100 is to be installed is determined, the longitudinal ratio of the front portion 1111 and the rear portion 1112 of the wind guide 1100 of the building wind heat generator is determined according to the height of the building or the surrounding environment. Accordingly, the elevation angles θ1 and θ2 of the front part 1111 and the rear part 1112 may also be determined. That is, the lengths and elevation angles θ1 and θ2 of the front portion 1111 and the rear portion 1112 may be fixed at the time of installation. However, the length and the rising angle of the front portion 1111 and the rear portion 1112 may be varied according to a position where the wind direction is frequently changed or obstacles around.

Looking at this in detail, as shown in (a) of Figure 7, the front portion 1111 and the rear portion 1112 may adjust the length. To this end, the wind guide 1100 of the building wind heat generator may be provided with an adjusting driver (not shown), and the front portion 1111 and the rear portion 1112 may each have two rectangular plates. have. The two rectangular plates are slidably coupled and one of the two rectangular plates is movable by means of an adjustable drive. Therefore, the length of the front portion 1111 and the rear portion 1112 can be increased or decreased.

In addition, as shown in FIG. 7B, the adjustment driver may adjust the inclination angles θ1 and θ2 by changing the inclinations of the front part 1111 and the rear part 1112. Therefore, it is possible to adjust the rising angles θ1 and θ2 of the front part 1111 and the rear part 1112 according to the change in the length of the front part 1111 and the rear part 1112. To this end, the front portion 1111 and the rear portion 1112 may be rotatably coupled around the central axis 1130.

Through such a configuration, the length and the rising angle of the front portion 1111 and the rear portion 1112 may be changed according to circumstances. For example, when the wind guide 1100 is installed in a house located on the shore, since the sea wind is strong during the day, the front portion 1111 and the front portion 1111 and the front portion 1111 and the rear portion 1112 are based on the side where the sea wind is introduced. Determine the length and elevation angle of the rear portion 1112. Since the wind is strong at night, the length of the front part 1111 and the rear part 1112 and the rising angle of the front part 1111 and the rear part 1112 are determined based on the side where the meat wind is introduced.

The rotor 1200 is a part that rotates by wind, and is connected to a rotating shaft 1210, a rotor described later of the wind heater 1300, and a support part 1220 supporting the rotor 1200, and the rotating shaft 1210. Rotation blades 1230 are supported by the radially extending spoke at and located at the bottom of the top portion 1110. In the present embodiment, the vertical axis wind power source is described as an example, but the present invention is also applicable to the horizontal axis wind power source.

8 is a view showing the building wind power source of the embodiment the rotor is fixed to the upper end of the wind guide in the present invention. As shown in FIG. 8, both ends of the rotating shaft 1210 may be fixed to the wind guide 1100 by the support part 1220. The rotor 1200 of the wind generator 1000 is connected to and fixed to the wind guide 1100, thereby minimizing the effects of vibration and noise caused by the rotation of the rotor 1200 on the building. In addition, since the rotor 1200 is stably supported, durability becomes strong.

The wind heater 1300 heats the heat medium according to the rotation of the rotor 1200. The wind heater 1300 is installed inside the base B, but may be installed outside the base B or may be installed without the base B.

9 is a perspective view showing an example of a wind heater of the building wind power source according to an embodiment of the present invention, Figure 10 is a front sectional view of FIG. As shown, the wind heater 1300 has a permanent magnet 1311 that generates an eddy current according to the rotation of the rotor 1200, and has a rotor 1310 connected to the support part 1220 and the rotor 1310. The eddy current is converted into Joule heat and includes a heating element 1320 which generates heat, and is heated while the heating medium moves to the flow space S inside the heating element 1320. The heat medium flows into the flow space S through the heat medium supply pipe 1510 and is heated, and then flows out through the heat medium recovery pipe 1520.

The permanent magnets 1311 are arranged one by one along the outer circumferential surface of the rotor 1310 by the size of the permanent magnets, and form a plurality of rows along the longitudinal direction of the rotor 1310. The heating element 1320 is spaced apart from each other to have a gap around the permanent magnet 1311, and has a double tube shape in which a flow space S is formed. The heating element 1320 is usually formed of a conductive material such as aluminum (Al), copper (Cu), or the like. The heat medium uses a common liquid such as water or oil.

FIG. 11 is a front sectional view showing another example of the wind heater of the building wind power source according to the embodiment of the present invention, and FIG. 12 is a plan sectional view of FIG. As shown, the wind heater 2300 of the present embodiment has a form in which the heating element 2320 is wound so that the tube is spaced apart to have a gap around the permanent magnet 2311. The heat medium flows into the flow space S1 of the tube that is the heating element 2320 through the heat medium supply pipe 1510, is heated, and then flows out through the heat medium recovery pipe 1520. Since the arrangement form of the rotor 2310 and the permanent magnet 2311 are the same as those of FIGS. 9 and 10, detailed description thereof will be omitted.

When the

rotors

1310 and 2310 rotate as the rotors 1200 (shown in FIGS. 1 and 2) rotate in the

wind heaters

1300 and 2300, the

permanent magnets

1311 and 2311 are momentarily surrounded by the

permanent magnets

1311 and 2311. And the magnetic field continuously changes. An eddy current is generated in the

heating elements

1320 and 2320 due to a change in the magnetic field around the

permanent magnets

1311 and 2311, and the heating element 1320 is heated by induction heating in which the generated eddy currents are converted to Joule heat. Heat medium in the flow space (S) (S1) formed in the (2320) is heated.

13A to 13G are views conceptually illustrating various wind heaters of a building wind heat source according to an embodiment of the present invention. As shown, the wind heater heats the heating medium by frictional heat generated by the rotation of the rotor (FIGS. 13A to 13F), or the cavitation generated between the rotating body and the heating medium rotating according to the rotation of the rotor. It is also possible to heat the heat medium through (Fig. 13g). Detailed description of the various wind heaters is as follows.

FIG. 13A illustrates a method of using solid friction to press a brake shoe to a brake drum or a brake disc driven by a windmill to absorb frictional heat generated by a friction surface into a fluid such as water. Figure 13b and Figure 13c is a fluid stirring method for rotating the shaft attached to the obstacle plate in the liquid using a friction between the solid and liquid, Figure 13c is a rotational force of the windmill to rotate the centrifugal pump and the friction of the outlet pipe water temperature It shows how to raise. FIG. 13D is a low pressure blower type heat conversion device using friction between gas and solid, and FIG. 13E is a method using friction between liquids by combining a hydraulic pump and an orifice, and a fixed capacity hydraulic pump is directly connected by a windmill. Driven, wind energy is converted into mechanical energy by windmills, and mechanical energy is converted into pressure energy by a hydraulic pump, which in turn is converted into kinetic energy by an orifice and finally by thermal energy in the outlet flow path. FIG. 13F illustrates a method using eddy currents, in which rotors rotate between magnetic fields excited by microcurrents flowing through an excitation coil, pulsation of magnetic flux occurs, eddy currents occur, and eddy currents provide rotational resistance to the rotor and absorb power. At this time, since the load control or the rotational speed control are performed electrically, the response is good and the degree of rotational control of the rotor can be increased.

FIG. 13G is a method of heating the heating medium through cavitation generated between the rotating body and the heating medium according to the rotation of the rotor. In this method, since the hydraulic pressure of the surface of the object moving at high speed in the fluid is reduced, cavitation is generated between the fluid introduced into the rotating members rotating in opposite directions, thereby obtaining a high temperature fluid. to be. This method has high thermal efficiency, can increase environmental problems and convenience of maintenance of the heat engine, and it is effective in ease of use, elimination of risk factors, and cost reduction.

The heat medium heated by the wind heater 1300 is collected in the heat collecting tank 1400, and the heat medium collected in the heat collecting tank 1400 is used in a cooling and heating system through a heat exchanger (not shown). The collection tank 1400 is connected to the wind heater 1300 through a piping line 1500.

The piping line 1500 includes a heat medium supply pipe 1510 for supplying a heat medium to the wind heater 1300 in the heat collecting tank 1400, and a heat medium recovery pipe 1520 for recovering the heat medium heated in the wind heater 1300. . In the building wind heat source apparatus including a plurality of rotors 1200 and a plurality of wind heaters 1300, pipes are branched from the heat medium supply pipe 1510 to each wind heater 1300, while at each wind heater 1300. A pipe is branched to the heat medium recovery pipe 1520.

The pipe line 1500 is provided with a pump 1600 for circulating the heat medium. In addition, a temperature control valve 1700 is installed between the wind heater 1300 and the heat collecting tank 1400 to control the flow of the heat medium according to the temperature of the heat medium. The piping line 1500 includes a return pipe 1530 that returns the heat medium of the heat medium recovery pipe 1520 to the heat medium supply pipe 1510 as the temperature control valve 1700 opens and closes. The pump 1600 is installed in the heat medium supply pipe 1510, and the temperature control valve 1700 is installed in the heat medium recovery pipe 1520. The temperature control valve 1700 is controlled by the controller in accordance with the temperature detection of a temperature sensor (not shown). The pipe line 1500 may further include a plurality of valves for controlling the flow of the flow path.

Flow characteristics introduced into the rotor of the building wind power generator were analyzed according to the elevation angles of the front and rear portions of the wind guide of the building wind energy source and the inclination of the front end of the roof (or the bottom). For this purpose, Sc / Tetra, a commercial CFD code, was used.

As shown in FIG. 14, the analysis shape set only the front part and the rear part and the roof (or the lower end part) of the wind guide. The variables were ascending angle A of the front part, the rising angle B of the rear part, and the inclination C of the front end of a roof. Specific specifications of the analysis shape are shown in Table 1, and the width of the front part and the rear part was set to 1m.

Table 1

In this case, as shown in Table 2, if the elevation angle (A) of the front part, the elevation angle (B) of the rear part, and the slope (C) of the front end of the lower part are changed to four levels, a total of 81 analysis cases are shown. Since it takes a long time and cost to analyze 81 cases numerically, the number of analyzes is reduced to 16 as shown in Table 3 using Taguchi, one of the experimental design methods.

TABLE 2

TABLE 3

In order to understand the flow characteristics of the analysis object, it is assumed that 1) the air in the analysis is incompressible, 2) the effects on gravity are ignored, and 3) the steady state is maintained. Inspection volume and boundary conditions are shown in FIG. 15. The inspection volume was set to 10 times in the front, 20 times in the rear, and 10 times in the upper part of the size of the wind guide. Boundary conditions are described in detail in Table 4. In this case, the stationery wall is a wall to which the actual wall condition is applied, and the free slip wall is a virtual wall, and there is no viscous effect of the fluid.

Table 4

Grid generation is as shown in FIG. In order to improve the accuracy of analysis, a prism layer was placed around the analysis shape, and the thickness thereof was set to 5 mm. It also improves the grid density around the analysis shape. The grating maximum size is 2 m and the minimum size is 0.03 m. The number of grids is about 190,000.

FIG. 17 is a view showing a flow distribution between a wind guide and a roof for the 16 cases described in Table 3. FIG. The increase in flow rate is determined by the performance index of the wind guide, and is obtained by Equation 1. Where V _m is the mean velocity and V _∞ is the inlet velocity. At this time, the flow distribution average value is obtained from the area where the rotor of the wind power generator is installed.

Equation 1

In order to analyze the effects of the design factors ascending angle (A) at the front, the ascending angle (B) at the rear, and the slope (C) at the front end of the roof on the flow rate increase, the average value of the flow distribution between the wind guide and the roof is calculated in minitab 14.1. Entered. Here, the analysis effects for each design factor were calculated using the SN ratio. The higher the mean value of the flow distribution, the better.

FIG. 18 is a diagram showing that the SN ratio of the analysis results of the 16 cases described in Table 3 is analyzed by the tower characteristic. FIG. The factor-by-factor analysis shows that the best results can be obtained when the elevation angle A of the front part is three, the elevation angle B of the rear part is one, and the slope C of the front end of the roof is four. That is, when the elevation angle A of the front part is 30 degrees, the elevation angle B of the rear part is 10 degrees, and the inclination C of the front end of a roof is 30 degrees. In this case, case 9 is the most similar shape, although not in the analysis case. In actual production, in consideration of manufacturing error, the elevation angle A of the front part may be 10 to 35 °, and the elevation angle B of the rear part may be 5 to 10 °.

In case 9, compared to case 1, it can be seen that the wind speed is further increased in the rotor part of the wind power generator. This is because the rise angle (A) of the front portion of the wind guide increases the structure that can collect more flow.

In case 12, the flow rate is very low in the rotor section of the wind generator. This is because the rising angle B of the rear portion increases from 10 ° to 40 ° so that the flow collected by the increase of the rising angle A of the front portion cannot be maintained, and the strong wind area is pushed backward.

20 is a chart showing the performance index of the wind guide obtained from Equation 1 for 16 cases. Case 9 is good at 1.54 and case 13 at 1.56. This seems to be the result of keeping the flow collected from the front as the ascending angle (A) of the front increases and collects much of the front flow, and the ascending angle (B) of the rear becomes small. Therefore, in order to increase the performance index of the wind guide, the angle at which the wind blows should be increased and the angle at the rear of the wind guide must be low to increase the flow velocity at the place where the wind generator is installed.

FIG. 21 is a view showing an analysis shape for determining an increase in flow rate according to a change in the elevation angle of the front part at a ratio of 1: 1 in the front part and the rear part, and FIG. 18 is a case in which the elevation angle of the front part is changed. It is a figure which shows a flow distribution.

Specific specifications of the analysis shape are shown in Table 5.

Table 5

In order to determine the flow distribution according to the change in the elevation angle (A) of the front portion, the experiment was performed in the conditions shown in Table 6.

Table 6

As shown in FIG. 22, when the length ratio of the front part to the rear part is 1: 1, the change of flow according to the change of the elevation angle A of the front part is not large. Therefore, it is preferable that the same effect occurs even when the wind is introduced into the rear part by changing the wind angle (A) of the front part and the rising angle B of the rear part. In particular, in FIG. 18, the lower the elevation angle B of the rear portion is, the better the effect is. Therefore, when the longitudinal ratio of the front portion and the rear portion is 1: 1, the elevation angle A of the front portion and the elevation angle of the rear portion ( It is preferable to make B) the same at low values.

As shown in FIG. 23 to determine the performance index of the wind guide according to the shape of the fixing part, when there is no fixing part, the fixing part is a rectangular column, an experiment was divided into an elliptical column. The boundary condition and mesh information applied to the experiment are as shown in FIGS. 24 and 25.

The numerical results are shown in FIGS. 26 and 27. As can be seen from Fig. 26 and Fig. 27, when the fixed part is a rectangular pillar, the average speed of the wind is slower than when the fixed part is not present. Therefore, there is a problem that the heat generation efficiency of the wind power source due to the fixed portion is lowered. However, when the fixed part is an elliptical column, the average speed of the wind is faster than without the fixed part. Therefore, by installing the fixing portion, the heat generation efficiency of the wind power generator is increased.

Comparing this with the figure of merit, it is as shown in FIG. The figure of merit is as defined in equation (1). The figure of merit of the case where there is no fixed part is 1.47, the figure of merit when the fixed part is a rectangular column, and the figure of merit is 1.28, and the figure of merit when the fixed part is an elliptical column is 1.58. The performance index decreased by 12.92% in the case of the fixed part of the square column than the absence of the fixed part, and the performance index increased by 7.48% in the case of the elliptical column.

Through such experiments, the heating efficiency may vary depending on the shape of the fixing part, and the shape of the fixing part is found to be preferably an elliptical column rather than a rectangular column.

29 (a) to (d) is a permanent magnet 1311 is arranged in the rotor 1310 of the wind heater 1300 of the building wind power source according to the embodiment of the present invention shown in FIGS. 9 and 10 Figures of the magnet array comparative example and the magnet array embodiment for analyzing the torque according to the state. FIG. 29A illustrates a magnet arrangement comparative example 1 in which the permanent magnets 1311 are arranged without gaps on the entire outer circumferential surface of the rotor 1310, and FIG. 29B shows the permanent magnets 1311 as the rotors. A magnet array comparative example 2 showing a state of being spaced apart by the size (width) of a permanent magnet along the outer circumferential surface of 1310 is shown, and FIG. 29C shows the length of the rotor 1310 in FIG. 29A. The magnet array comparative example 3 which shows the state arrange | positioned by one line along the direction is shown, FIG. 29 (d) shows the state which arrange | positioned one line along the longitudinal direction of the rotor 1310 in FIG. 29 (c). A magnet array embodiment of the present invention is shown.

Table 7 shows the results of testing torque and heat generation efficiency using water as the wind heater 1300 using the magnet array comparative examples 1 to 3 of FIG. 29 and the rotor 1310 of the magnet array example. The test apparatus is shown in FIG. The test was carried out as follows.

After operating the pump for about 30 minutes to get the same inlet and outlet temperature, the data was acquired for two hours through the instrument (MV2000) and the results were summarized using the last 30 minutes of stabilization. The values of (T), rotational speed, and flow rate were recorded, subtracted from the average value of each data, and corrected. Efficiency is a value calculated from the ratio of input energy P and output energy Q.

TABLE 7

As shown in Table 7, there is little difference in efficiency, but the torque of Comparative Example 1 and Comparative Example 3 is remarkably small, and Comparative Example 2 and Inventive Example showed a large torque.

As shown in FIG. 31A, in Comparative Example 1 and Comparative Example 3, the magnetic force lines going from the N pole to the S pole overlap each other and cancel each other, so that the magnetic force is weak and thus the torque is low. As shown in b), in the comparative example 2 and the inventive example, the magnetic force lines going from the N pole to the S pole do not overlap each other, so that the magnetic force is determined to be large and the torque is large. On the other hand, in Comparative Example 2, the motor was stopped due to overload.

Considering both the number, torque and efficiency of the magnets as shown in Table 7, it can be seen that the permanent magnet arrangement according to the embodiment of the present invention has a low number of magnets, high torque and efficiency, and does not cause overload of the motor. Can be.

32 is an operational state diagram of the building wind power source according to an embodiment of the present invention. As shown, the wind gathers while passing through the wind guide 1100 and passes through the rotor 1200, so that the rotor blades 1230 rotate at a high speed. Accordingly, the wind heater 1300 operates. At the same time, as the pump 1600 operates, the heat medium in the collecting tank 1400 circulates through the wind heater 1300 along an arrow (solid line). The heat medium is heated and circulated while passing through the wind heater 1300. If the temperature of the heat medium recovered through the heat medium recovery pipe 1520 is sensed and does not reach the set temperature, the temperature control valve 1700 operates to return the tube 1530. ), The heat medium is changed to the heat medium supply pipe 1510 through an arrow (dotted line) instead of being collected by the heat collecting tank 1400. By such control, the heat collecting tank 1400 can always be stored in the heat medium of a constant temperature. The heat medium collected in the heat collecting tank 1400 is used in a cooling and heating system through a heat exchanger (not shown).

According to the building wind energy source of the present invention, by adjusting the rising angle according to the length of the front and rear of the upper end of the wind guide to collect the wind to the rotor of the wind power generator and the wind speed when passing through the rotor It is possible to increase the heat generation efficiency of the wind power source by increasing the speed, and also the present invention can adjust the length and the rising angle of the front and rear parts of the wind guide according to the position and the direction of the wind guide is installed wind power The heat generation efficiency of the original apparatus can be improved. In addition, the present invention is to form a column of the elliptical cross section of the wind guide fixing portion to prevent the deterioration of the heating efficiency due to the installation of the fixing portion, rather can increase the heating efficiency, the rotor of the wind power source is connected to the wind guide By being fixed, it is possible to minimize the effect of vibration and noise caused by the rotation of the rotor on the building.

In addition, the present invention can increase the energy conversion efficiency while reducing the number of permanent magnets by optimizing the permanent magnets arranged in the rotor in the structure in which the eddy current is generated in the rotation of the permanent magnet to heat the heat medium.

On the other hand, the embodiments of the present invention disclosed in the specification and drawings are merely presented specific examples to easily explain the technical contents and help the understanding of the present invention, and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention can be carried out in addition to the embodiments disclosed herein.

It can be used in various fields such as power generation system, heating and cooling system, air conditioning machine and general industrial machine.

Claims

An upper end having a front part and a rear part joined in contact with each other in a form of rising up from the upper part of the rotor, a fixing part supporting and fixing the upper part to a building, and adjusting the length and the rising angle of the front part and the rear part A wind guide having an adjustable driving unit and adjusting an elevation angle of the front part and the rear part according to a longitudinal ratio of the front part and the rear part according to the wind traveling direction;

A rotor located below the upper end;

A wind heater for heating the heat medium according to the rotation of the rotor; And

And a heat collecting tank in which the heat medium heated by the wind heater is collected.
The method according to claim 1,

And a temperature control valve for controlling the flow of the heat medium according to the temperature of the heat medium between the wind heater and the heat collecting tank.
The method according to claim 1,

The stationary wind power generator of the building, characterized in that the cross section is oval.
The method according to any one of claims 1 to 3,

When the longitudinal ratio of the front part and the rear part is 2: 1,

The elevation angle of the front portion is 25 ~ 35 °, the building wind heat source device, characterized in that the elevation angle of the rear portion is 5 ~ 10 °.
The method according to any one of claims 1 to 3,

When the longitudinal ratio of the front part and the rear part is 1: 1,

The building wind energy source of claim 1, wherein the elevation angle of the front portion and the elevation angle of the rear portion are the same.
The method according to any one of claims 1 to 3,

It is characterized in that the top surface is formed flat and has a slope in which the front wind flows toward the upper surface, and further comprising a lower end spaced apart from the upper end and attached to the building located below the rotor. Building wind power generator.
The method according to claim 1,

The rotor is plural,

And the plurality of rotors are separated by a plurality of fixing units, respectively.
The method according to claim 1,

The rotor wind power generator of the building, characterized in that the rotor is connected to and fixed to the wind guide.
The method according to claim 1,

The wind heater includes a rotor having a permanent magnet that generates eddy currents according to the rotation of the rotor, and a heating element in which the eddy current according to the rotation of the rotor is converted to Joule heat to generate heat.

Building wind power source, characterized in that the heating medium is heated while moving inside the heating element.
The method according to claim 9,

And the permanent magnets are arranged one by one along the outer circumferential surface of the rotor and spaced apart by the size of the permanent magnets.
The method according to claim 10,

The permanent magnet is a building wind power source, characterized in that a plurality of rows forming along the longitudinal direction of the rotor.
The method according to claim 1,

The wind power heater is a building wind power source, characterized in that for heating the heat medium by the frictional heat generated by the rotation of the rotor.
The method according to claim 1,

The wind power heater is a building wind power source, characterized in that for heating the heating medium through the cavitation (cavitavion) generated between the rotating body and the heating medium rotating according to the rotation of the rotor.