CN204794874U - Line spotlight helioplant of cogeneration of heat and power - Google Patents

Abstract

The utility model provides a line spotlight helioplant of cogeneration of heat and power, includes speculum row, heat absorber and photovoltaic cell, photovoltaic cell installs both sides or adjacent two sets of speculum column pitch top of heat absorber, speculum row are each autotracking sun and reflect the sunlight respectively realize the heat production on the heat absorber, perhaps each autotracking sun and reflect place one side with the sunlight respectively photovoltaic cell is last, realizes solar energy power generation, and the photovoltaic cell sensitive surface is just being arranged the below or is being divided into two, is lifting certain angle to the interval both sides respectively, the utility model discloses mutually combine two kinds of electricity generation modes of solar energy light and heat and photovoltaic, have complementary advantages to the more effectual solar energy resource that utilizes.

Description

A line concentrating solar energy utilization device for cogeneration of heat and power

technical field

The utility model relates to the technical field of solar energy utilization, in particular to a line concentrating solar energy utilization device for combined heat and power generation, which is used to flexibly generate heat or electric energy according to needs when utilizing solar energy.

Background technique

With the continuous development of economy and society, the demand for energy is increasing day by day. Fossil energy has increasingly serious pollution and non-renewable problems. It is imperative to develop clean and renewable energy. Solar energy is abundant, and it is an environmentally friendly and clean renewable energy that has attracted widespread attention.

There are mainly two forms of solar energy utilization: solar thermal and photovoltaic. Photothermal refers to the use of solar energy to heat the working fluid. The working fluid absorbs energy and reaches a high temperature state before being utilized. Photothermal can be divided into two categories: concentrating and non-concentrating. The use of concentrated light can generate relatively high temperatures, and even be used to generate high-temperature and high-pressure steam to drive steam turbines to generate electricity. Solar cookers are its representative. The temperature of non-concentrated sunlight is lower, and typical examples include solar water heaters, etc. Photovoltaics refers to the direct conversion of solar energy into electricity using solar photovoltaic panels.

At present, solar energy utilization methods include photovoltaic power generation, solar water heaters, and concentrating solar thermal utilization devices, among which concentrating solar thermal utilization devices have a wider range of applications by concentrating sunlight to generate higher temperatures. The problem with using a device corresponding to a certain solar energy utilization method alone is that all of these methods can only generate electricity or heat. For a system that only generates heat, the heat cannot be used in hot summer; and for a device that only generates electricity, there is a problem of low energy utilization efficiency in the winter heating season. If heat and electricity are to be produced at the same time, two different devices need to be used, and the investment is relatively large.

Contents of the invention

In order to overcome the above-mentioned problems in the prior art, the purpose of this utility model is to provide a line concentrating solar energy utilization device for combined heat and power generation, which combines solar thermal and photovoltaic power generation methods with complementary advantages, thus making it more effective utilization of solar energy resources.

In the linear concentrating thermal power generation technology represented by linear Fresnel, in order to improve the thermal power generation efficiency of the system, it is necessary to increase the concentration ratio of the heat collecting field. On the basis of the light concentrating by the reflector, a secondary reflector is further used to further concentrate the incident light and heat the heat collecting medium to a higher temperature.

In order to achieve the above object, the utility model adopts the following technical solutions:

A linear concentrating solar energy utilization device for cogeneration of heat and power, including a reflector column 2, a heat absorber 3 and a photovoltaic cell 4, the heat absorber 3 is installed above the center of the reflector column 2, and the light-receiving surface of the photovoltaic cell 4 is facing down and installed on both sides of the heat absorber 3, the reflector columns 2 respectively track the sun and reflect sunlight to the heat absorber 3 to generate heat, or track the sun and The light is reflected to the photovoltaic cell 4 on the side where the reflector column 2 is located, so as to realize solar power generation.

The backside of the heat absorber 3 and the photovoltaic cell 4 is also equipped with a photovoltaic cell with the light-receiving surface facing upward.

It also includes a controller to set part of the reflecting mirror column 2 to reflect sunlight to the heat absorber 3 to collect heat as required, and at the same time, partially reflecting the reflecting mirror column 2 to reflect sunlight to the photovoltaic cell 4 to generate electricity.

The back side of the photovoltaic cell 4 is equipped with a cooling fin for heat dissipation and a cooling water circulation system.

The reflector column 2 is equipped with a storage battery to provide electricity for driving the reflector column 2 to track the sun for a period of time. During this period of time, the device is started to supply power. On the basis of realizing the self-sustaining operation of the device, heat and electricity are generated as required.

The heat absorber 3 is equipped with a heat storage device for providing heat at night to meet the heating demand at night.

A linear concentrating solar energy utilization device for cogeneration of heat and power, including a reflector row 2, a heat absorber 3 and a photovoltaic cell 4, and the photovoltaic cell 4 is a whole or divided into two halves and installed in two adjacent groups of reflector rows 2 Above the interval, when it is divided into two halves, the two halves are respectively raised to the preset angles on both sides of the interval, so as to receive as much sunlight as possible reflected by the reflector columns 2 on both sides of the interval; the light-receiving surface of the photovoltaic cell 4 faces Next, the reflector rows 2 on both sides of the interval track the sun and keep the reflected light irradiating on the photovoltaic cell 4 to realize solar power generation; the heat absorber 3 is installed on both sides of the photovoltaic cell 4, and the other reflector rows 2 track the sun respectively and reflect sunlight to the heat absorber 3 to realize heat generation.

The backside of the heat absorber 3 and the photovoltaic cell 4 is also equipped with a photovoltaic cell with the light-receiving surface facing upward.

It also includes a controller to set part of the reflecting mirror column 2 to reflect sunlight to the heat absorber 3 to collect heat as required, and at the same time, partially reflecting the reflecting mirror column 2 to reflect sunlight to the photovoltaic cell 4 to generate electricity.

The back side of the photovoltaic cell 4 is equipped with a cooling fin for heat dissipation and a cooling water circulation system.

The reflector column 2 is equipped with a storage battery to provide electricity for driving the reflector column 2 to track the sun for a period of time. During this period of time, the device is started to supply power, and on the basis of realizing the self-sustaining operation of the device, heat and electricity are generated as required.

The heat absorber 3 is equipped with a heat storage device for providing heat at night to meet the heating demand at night.

Compared with the prior art, the utility model has the following advantages:

The linear concentrating solar energy utilization device for cogeneration of heat and power of the utility model can flexibly realize power generation and heat supply according to needs. Under the same area, compared with two kinds of heat supply and power generation devices, only power generation or heat supply is required. When it is used, all the area can be used for power generation or heat supply, thereby providing greater power output, and the device cost increases little compared with separate heat supply and power generation, and is much smaller than the combination of heat supply and power generation equipment. In the duty room in the western part of my country, heating is required in winter, and power supply and cooling are required in summer. In this way, only a small amount of power supply from the power grid is required to maintain the operation of the device, which can meet the needs of heating and cooling. If the power grid fails, a device equipped with a battery can be used. When the system needs to maintain heat collection in winter, a part of the mirror array is set to irradiate the photovoltaic cells to generate electric energy to maintain the independent operation of the device.

Description of drawings

Fig. 1 is the existing line concentrating and heat-collecting solar energy utilization device;

Fig. 2 is the solar cogeneration device (heat production state) that photovoltaic cells are installed on both sides of the heat absorber of the first embodiment of the utility model;

Fig. 3 is according to the first embodiment of the utility model the solar heat and power cogeneration device (power generation state) that photovoltaic cells are installed on both sides of the heat absorber;

Fig. 4 is a solar heat and power cogeneration device in which photovoltaic cells are installed above the middle part of the interval between two adjacent sets of concentrating solar heat utilization devices according to the second embodiment of the utility model, wherein the photovoltaic cells adopt the light-receiving surface directly facing the bottom;

Fig. 5 is a solar heat and power cogeneration device in which photovoltaic cells are installed above the middle part of the interval between two adjacent sets of concentrating solar heat utilization devices according to the second embodiment of the utility model, wherein the photovoltaic cells are divided into two halves and lifted to both sides respectively certain angle.

Fig. 6 is a solar cogeneration device with other photovoltaic cells installed on the back of the heat absorber and the back of the photovoltaic cells and installed above the interval according to the second embodiment of the present invention.

Detailed ways

The utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment.

As shown in Figure 1, it is an existing line concentrating and heat-collecting solar energy utilization device, which includes a reflector column 2 and a heat absorber 3, and the reflector column 2 tracks the sun respectively and reflects sunlight to the heat absorber 3 to absorb heat. In the device 3, the flow of heat-collecting working fluid absorbs solar radiation to generate high temperature to provide heat.

As shown in Figure 2, it is the line concentrating solar energy utilization device (heat production state) of the combined heat and power generation proposed by the first embodiment of the utility model, including reflector column 2, heat absorber 3 and photovoltaic cell 4, heat absorber 3 is installed above the center of the reflector column 2, and the photovoltaic cell 4 is installed on both sides of the heat absorber 3 with the light-receiving surface facing down. The reflector columns 2 track the sun and reflect sunlight to the heat absorber 3 to realize heat generation.

As shown in Figure 3, it is the line concentrating solar energy utilization device (power generation state) of the combined heat and power generation proposed by the first embodiment of the utility model, which includes a reflector column 2, a heat absorber 3 and a photovoltaic cell 4, and the heat absorber 3 Installed above the center of the reflector column 2, the photovoltaic cell 4 is installed on both sides of the heat absorber 3 with the light-receiving surface facing down, and the reflectors on both sides of the heat absorber 3 track the sun and reflect sunlight to the photovoltaic cell on the side 4, realize solar power generation.

As shown in Figure 4, it is the line concentrating solar energy utilization device for cogeneration of heat and power proposed in the second embodiment of the utility model, wherein the photovoltaic cell 4 is installed above the interval between two adjacent groups of line concentrating devices, and the light receiving surface of the photovoltaic cell 4 is Arranged directly below, the reflector rows 2 on both sides of the interval track the sun and keep the reflected light irradiating the photovoltaic cells 4 to realize solar power generation. The heat absorber 3 is installed on both sides of the photovoltaic cell 4 , and the other reflecting mirror columns 2 respectively track the sun and reflect sunlight to the heat absorber 3 to generate heat.

As shown in Figure 5, it is the linear concentrating solar energy utilization device for cogeneration of heat and power proposed in the second embodiment of the present utility model, wherein the photovoltaic cell 4 is divided into two halves, and the preset angles are respectively raised to both sides of the interval, for as far as possible Most receive the sunlight reflected by the reflecting mirror columns 2 on both sides of the interval.

As shown in FIG. 6 , it is a linear concentrating solar energy utilization device for cogeneration proposed in the second embodiment of the utility model. The back of the heat absorber 3 and the back of the photovoltaic cell 4 are installed with other photovoltaic cells 5 with the light-receiving surface facing upward. Other photovoltaic cells 5 are installed on the back of the heat absorber 3 and the back of the above-mentioned photovoltaic cell 4 to directly absorb solar radiation to generate electricity. Of course, the technical scheme of installing other photovoltaic cells on the back of the heat absorber 3 and the back of the above-mentioned photovoltaic cell 4 is also applicable to this application. The first embodiment of the utility model.

In the first embodiment and the second embodiment of the utility model, the linear concentrating solar energy utilization device for cogeneration of heat and power also includes a controller, and according to the needs, a part of the reflector column is set to irradiate on the heat absorber to collect heat while part of the reflector is irradiated. Generate electricity on photovoltaic cells.

In the line concentrating solar energy utilization device of cogeneration of heat and power in the first embodiment and the second embodiment of the present utility model, a cooling fin and a cooling water circulation system (not shown in the figure) are installed on the back of the photovoltaic cell 4 for heat dissipation, Thereby improving the power generation efficiency of the photovoltaic cell.

In the linear concentrating solar energy utilization device of cogeneration of heat and power in the first embodiment and the second embodiment of the present utility model, the reflector column 2 is equipped with a storage battery (not shown in the figure), which provides a period of time to drive the reflector column 2 to track The power of the sun, during this period of time, activates the device to supply power, and on the basis of realizing the self-sustaining operation of the device, generates heat and electricity as needed.

In the line concentrating solar energy utilization devices of cogeneration of heat and power in the first embodiment and the second embodiment of the present utility model, the heat absorber 3 is equipped with a heat storage device (not shown in the figure), which is used to provide heat at night, satisfying Heating needs at night.

The above is only a part of the specific implementation of the utility model, and the scope of protection of the utility model is not limited thereto. Any skilled person familiar with the technical field can easily think of changes within the technical scope disclosed in the utility model Or replacement, all should be covered within the scope of protection of the present utility model.

Claims (12)

1. the line Photospot solar of a cogeneration of heat and power utilizes device, it is characterized in that: comprise speculum row (2), heat dump (3) and photovoltaic cell (4), described heat dump (3) is installed on speculum row (2) overcentre, described photovoltaic cell (4) sensitive surface down and be arranged on the both sides of described heat dump (3), described speculum row (2) each autotracking sun sunlight is reflexed on described heat dump (3) and realize heat production respectively, or respectively each autotracking sun and sunlight is reflexed to speculum row (2) side photovoltaic cell (4) on, realize solar power generation.

2. the line Photospot solar of a kind of cogeneration of heat and power according to claim 1 utilizes device, it is characterized in that: the back side of described heat dump (3) and photovoltaic cell (4) is also provided with the supine photovoltaic cell of light.

3. the line Photospot solar of a kind of cogeneration of heat and power according to claim 1 utilizes device, it is characterized in that: also comprise controller, sunlight is reflexed to the upper thermal-arrest of heat dump (3) by setting unit speculum row (2) as required, and sunlight is reflexed to the upper generating of described photovoltaic cell (4) by partially reflecting mirror row (2) simultaneously.

4. the line Photospot solar of a kind of cogeneration of heat and power according to claim 1 utilizes device, it is characterized in that: the back side of described photovoltaic cell (4) is provided with fin for dispelling the heat and cooling water recirculation system.

5. the line Photospot solar of a kind of cogeneration of heat and power according to claim 1 utilizes device, it is characterized in that: described speculum row (2) is equipped with storage battery, there is provided in a period of time and drive speculum row (2) to follow the tracks of the electricity of the sun, starting drive is powered during this period, running on basis from maintenance at implement device, produces heat and electric power as required.

6. the line Photospot solar of a kind of cogeneration of heat and power according to claim 1 utilizes device, it is characterized in that: described heat dump (3) is equipped with heat-storing device, for providing heat at night, meets the demand of heating at night.

7. the line Photospot solar of a cogeneration of heat and power utilizes device, it is characterized in that: comprise speculum row (2), heat dump (3) and photovoltaic cell (4), described photovoltaic cell (4) is overall or the speculum being installed on two adjacent groups that is split into two halves arranges above the interval of (2), when being split into two halves, two halves lift predetermined angle respectively to both sides, interval, the sunlight that speculum row (2) for both sides, reception interval as much as possible reflects; Down, the speculum of both sides, interval arranges (2) each autotracking sun and keeps reflection ray to be irradiated on photovoltaic cell (4) described photovoltaic cell (4) sensitive surface, realizes solar power generation; Described heat dump (3) is arranged on the both sides of described photovoltaic cell (4), other speculum row (2) each autotracking sun reflexed to by sunlight on described heat dump (3) and realize heat production respectively.

8. the line Photospot solar of a kind of cogeneration of heat and power according to claim 7 utilizes device, it is characterized in that: the back side of described heat dump (3) and photovoltaic cell (4) is also provided with the supine photovoltaic cell of light.

9. the line Photospot solar of a kind of cogeneration of heat and power according to claim 7 utilizes device, it is characterized in that: also comprise controller, sunlight is reflexed to the upper thermal-arrest of heat dump (3) by setting unit speculum row (2) as required, and sunlight is reflexed to the upper generating of described photovoltaic cell (4) by partially reflecting mirror row (2) simultaneously.

10. the line Photospot solar of a kind of cogeneration of heat and power according to claim 7 utilizes device, it is characterized in that: the back side of described photovoltaic cell (4) is provided with fin for dispelling the heat and cooling water recirculation system.

The line Photospot solar of 11. a kind of cogenerations of heat and power according to claim 7 utilizes device, it is characterized in that: described speculum row (2) is equipped with storage battery, there is provided in a period of time and drive speculum row (2) to follow the tracks of the electricity of the sun, starting drive is powered during this period, running on basis from maintenance at implement device, produces heat and electric power as required.

The line Photospot solar of 12. a kind of cogenerations of heat and power according to claim 7 utilizes device, it is characterized in that: described heat dump (3) is equipped with heat-storing device, for providing heat at night, meets the demand of heating at night.