CN108152227B - Device for testing nano magnetic fluid regulation and control solar full-spectrum frequency division output - Google Patents
Device for testing nano magnetic fluid regulation and control solar full-spectrum frequency division output Download PDFInfo
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- CN108152227B CN108152227B CN201711283408.4A CN201711283408A CN108152227B CN 108152227 B CN108152227 B CN 108152227B CN 201711283408 A CN201711283408 A CN 201711283408A CN 108152227 B CN108152227 B CN 108152227B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/1717—Systems in which incident light is modified in accordance with the properties of the material investigated with a modulation of one or more physical properties of the sample during the optical investigation, e.g. electro-reflectance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/1717—Systems in which incident light is modified in accordance with the properties of the material investigated with a modulation of one or more physical properties of the sample during the optical investigation, e.g. electro-reflectance
- G01N2021/1727—Magnetomodulation
Abstract
A device for testing full-spectrum frequency division output of nano-magnetic fluid regulation and control solar energy comprises a Helmholtz coil and a photovoltaic integrated device, wherein the photovoltaic integrated device comprises a flow control valve, a data acquisition device, a photovoltaic device, a cold water circulating system, a throttle valve, a second water pump, a heat exchanger, a nano-fluid heat-preservation water tank and a first water pump; the photovoltaic device in the photovoltaic integrated device is arranged in the middle of the Helmholtz coil and is positioned in a magnetic field which is generated by the Helmholtz coil and is vertical and horizontal to the vertical direction. The Helmholtz coil is used as the magnetic field generator, a magnetic field vertical or horizontal to the direction of the magnetic field is applied while illumination is performed, and the degree of frequency-division absorption of the magnetic nano fluid to light under the action of the magnetic field is judged by observing the numerical display of voltage, current and temperature in the Agilent.
Description
Technical Field
The invention provides a device for testing full-spectrum frequency division output of nano magnetic fluid regulation and control solar energy, and belongs to the field of photovoltaic power generation.
Background
The development of new energy and renewable energy is one of the methods for urgently solving the energy crisis, and especially the development and utilization of solar energy are important contents for developing strategic emerging industries. And has great significance for improving air quality, slowing down greenhouse effect and realizing sustainable development.
The magnetic nanometer fluid is a special nanometer fluid, has excellent heat property of common nanometer fluid, has large specific surface area of nanometer particles in single-phase fluid, can obviously increase the heat conduction coefficient and the heat exchange area of the fluid, makes irregular Brownian motion in the fluid to enhance the heat exchange in the fluid, and because the magnetic fluid has magnetism, some thermophysical parameters (such as density, viscosity, heat conduction coefficient and the like) of the magnetic fluid can be changed along with the change of an external magnetic field, thereby becoming a controllable heat transfer fluid and realizing the controllability of the fluid flow and the energy transfer process. Has very important application value in the field of thermal science, particularly in the fields of special heat transfer occasions (such as aviation, aerospace, electronics, biology and the like). The utilization and design of the magnetic nano fluid on the photovoltaic integrated device are beneficial to effectively absorbing heat of the solar PV assembly to improve photovoltaic heat conversion efficiency, the upper magnetic nano fluid is beneficial to absorbing infrared light, the phenomenon that the absorption temperature of the solar panel is too high and the efficiency is reduced is avoided, the comprehensive utilization efficiency of new solar energy is improved, the phenomena of energy exhaustion and environmental pollution are relieved, the ecological environment is improved, and a sustainable-development living environment is created.
Although the current magnetic nano fluid has controllability on solar photovoltaic, the strengthening effect of a magnetic field on the photovoltaic of the magnetic nano fluid can not be relatively optimized by a device, and the related aspects are three. Firstly, the adjustment of the magnetic field magnitude has an effect on the strengthening effect of the sub-nano fluid frequency division absorption optical energy, and the optimal magnetic field for the strengthening effect is not clear; secondly, the influence of the magnetic field direction on the photovoltaic properties of the magnetic nanofluid is unknown for adjusting the full spectrum utilization of solar energy, for example, the degree of frequency division absorption of light is unknown when the magnetic field direction is horizontal to the flow direction of the magnetic nanofluid or when the magnetic field direction is vertical to the flow direction of the magnetic nanofluid.
Disclosure of Invention
The purpose is as follows: aiming at the defects, the invention provides a device for testing the nano magnetic fluid to regulate and control the full-spectrum frequency division output of solar energy, which tests and reflects that the magnetic nano fluid forms chain structures with different degrees under the action of a magnetic field, so that the output power of a solar cell panel can be regulated in a controllable manner, and according to the difference of the magnetic field sizes, the degree of forming the chain structures is continuously enhanced and the light transmittance is increased theoretically before reaching the critical value, so that the power of the solar cell panel is improved; meanwhile, the temperature of the solar cell panel rises, the efficiency is gradually reduced, the strength of a magnetic field needs to be reduced, the light transmittance is reduced, the temperature of the solar cell panel is reduced, and the efficiency of the solar cell panel is improved through magnetic control. The magnetic nano fluid can indirectly show different absorption degrees of light under the action of the variable magnetic field.
The technical scheme is as follows: in order to achieve the purpose, the technical scheme of the invention is as follows:
a device for testing full-spectrum frequency division output of nano-magnetic fluid regulation and control solar energy comprises a Helmholtz coil and a photovoltaic integrated device, wherein the photovoltaic integrated device comprises a flow control valve, a data acquisition device, a photovoltaic device, a cold water circulating system, a throttle valve, a second water pump, a heat exchanger, a nano-fluid heat-preservation water tank and a first water pump; a photovoltaic device in the photovoltaic integrated device is arranged at the midpoint of the Helmholtz coil and is positioned in a magnetic field generated by the Helmholtz coil in the vertical direction and the horizontal direction;
the cold water circulating system, the throttle valve and the second water pump form a circulating cooling loop; the flow control valve, the photovoltaic device, the second water pump, the heat exchanger, the nanofluid heat-preservation water tank and the first water pump are sequentially connected to form a nanofluid circulation loop, and data acquisition devices are arranged at two ends of the photovoltaic device.
The data acquisition device is an Agilent current-voltage sensor and is used for recording current and voltage and temperature conditions of all places.
The photovoltaic device comprises a nano fluid cavity channel, two liquid inlets, two liquid outlets, a solar cell panel, upper-layer high-transmittance glass and lower-layer high-transmittance glass;
the two liquid inlets are positioned at one end of the photovoltaic device close to the first water pump, and the two liquid outlets are positioned at one end of the photovoltaic device close to the second water pump;
the nano-fluid cavity channel is positioned between the upper layer high-transmittance glass and the lower layer high-transmittance glass, a vacuum belt is arranged below the lower layer high-transmittance glass, a solar cell panel is arranged below the vacuum belt, and the two liquid inlets and the two liquid outlets are positioned at two ends of the nano-fluid cavity channel;
the flow direction of the nano fluid in the nano fluid cavity is the same as the direction of the horizontal magnetic field generated by the Helmholtz coil.
Has the advantages that: the invention provides a device for testing the full-spectrum frequency-division output of solar energy regulated and controlled by a nano magnetic fluid, which can relatively easily and intuitively obtain different absorption degrees of the magnetic nano fluid to light under the action of a magnetic field through a contrast test method when the light absorption degree of a certain magnetic nano fluid under the action of different magnetic fields is not clear. At the same time, the changing state before the critical value is reached can be observed by changing the magnetic field.
Drawings
FIG. 1 is a diagram showing the overall cycle of the apparatus;
fig. 2 is a structural view of the photovoltaic device.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As shown in fig. 1, a device for testing nano-magnetic fluid regulation and control of solar full-spectrum frequency division output includes a helmholtz coil and a photovoltaic integrated device, where the photovoltaic integrated device includes a flow control valve 1, a data acquisition device 2, a photovoltaic device 3, a cold water circulation system 4, a throttle valve 5, a second water pump 6, a heat exchanger 7, a nano-fluid heat-preservation water tank 8, and a first water pump 9; a photovoltaic device 3 in the photovoltaic integrated device is arranged at the midpoint of the Helmholtz coil and is positioned in a magnetic field generated by the Helmholtz coil in the vertical and horizontal directions;
the cold water circulating system 4, the throttle valve 5 and the second water pump 6 form a circulating cooling loop; the flow control valve 1, the photovoltaic device 3, the second water pump 6, the heat exchanger 7, the nanofluid heat preservation water tank 8 and the first water pump 9 are connected in sequence to form a nanofluid circulation loop, and the data acquisition devices 2 are arranged at the two ends of the photovoltaic device 3.
The data acquisition device 2 is an Agilent current-voltage sensor and is used for recording current and voltage and temperature conditions of various places.
As shown in fig. 2, the photovoltaic device 3 includes a nanofluid channel 3-1, two liquid inlets, two liquid outlets, a solar panel 3-2, an upper layer of high-transmittance glass 3-3, and a lower layer of high-transmittance glass 3-4;
two liquid inlets are positioned at one end of the photovoltaic device 3 close to the first water pump 9, and two liquid outlets are positioned at one end of the photovoltaic device 3 close to the second water pump 6;
the nano-fluid cavity channel 3-1 is positioned between the upper layer high-transmittance glass 3-3 and the lower layer high-transmittance glass 3-4, a vacuum belt 3-5 is arranged below the lower layer high-transmittance glass 3-4, a solar cell panel 3-2 is arranged below the vacuum belt, and the two liquid inlets and the two liquid outlets are positioned at two ends of the nano-fluid cavity channel 3-1;
the flow direction of the nano fluid in the nano fluid cavity 3-1 is the same as the direction of the horizontal magnetic field generated by the Helmholtz coil, so that the test error is reduced.
The working process of the device of the invention is as follows:
as shown in fig. 1, a nanofluid in a nanofluid heat-preservation water tank 8 enters a nanofluid channel 3-1 of a photovoltaic device 3 through a flow control valve 1 by a first water pump 9, the frequency division characteristic of the magnetic nanofluid is changed by applying a magnetic field (indicated by an arrow in the figure) with controllable horizontal or vertical direction, so that the power of a solar cell panel 3-2 is changed, and then the magnetofluid flows out and is pumped into a heat exchanger 7 by a second water pump 6 to be cooled and then enters the nanofluid heat-preservation water tank 8 to form circulation, wherein cooling water is provided by a cold water circulation system 4. And 2 Agilent (34972A) is connected in the photovoltaic device 3 to measure various parameters of the solar panel and the nanofluid. Thereby judging the influence of the magnetic nano fluid on the optical frequency division under the action of the magnetic field.
Claims (2)
1. The utility model provides a device of test nanometer magnetic current body regulation and control solar energy full gloss register for easy reference frequency division output which characterized in that: the device comprises a Helmholtz coil and a photovoltaic integrated device, wherein the photovoltaic integrated device comprises a flow control valve (1), a data acquisition device (2), a photovoltaic device (3), a cold water circulating system (4), a throttle valve (5), a second water pump (6), a heat exchanger (7), a nano fluid heat-preservation water tank (8) and a first water pump (9); a photovoltaic device (3) in the photovoltaic integrated device is arranged at the midpoint of the Helmholtz coil and is positioned in a magnetic field which is generated by the Helmholtz coil and is vertical and horizontal to the vertical direction;
the cold water circulating system (4), the throttle valve (5) and the second water pump (6) form a circulating cooling loop; the flow control valve (1), the photovoltaic device (3), the second water pump (6), the heat exchanger (7), the nanofluid heat-preservation water tank (8) and the first water pump (9) are sequentially connected to form a nanofluid circulation loop, and the two ends of the photovoltaic device (3) are provided with the data acquisition devices (2);
the photovoltaic device (3) comprises a nano fluid cavity (3-1), two liquid inlets, two liquid outlets, a solar cell panel (3-2), upper-layer high-transmittance glass (3-3) and lower-layer high-transmittance glass (3-4); the two liquid inlets are positioned at one end of the photovoltaic device (3) close to the first water pump (9), and the two liquid outlets are positioned at one end of the photovoltaic device (3) close to the second water pump (6);
the nano-fluid cavity channel (3-1) is positioned between the upper layer high-transmittance glass (3-3) and the lower layer high-transmittance glass (3-4), a vacuum belt (3-5) is arranged below the lower layer high-transmittance glass (3-4), a solar cell panel (3-2) is arranged below the vacuum belt, and the two liquid inlets and the two liquid outlets are positioned at two ends of the nano-fluid cavity channel (3-1);
the flow direction of the nano fluid in the nano fluid cavity (3-1) is the same as the direction of a horizontal magnetic field generated by the Helmholtz coil.
2. The device for testing the nano-magnetic fluid regulated solar full-spectrum frequency-division output according to claim 1, wherein: the data acquisition device (2) is an Agilent current-voltage sensor and is used for recording current and voltage and temperature conditions at each position.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711283408.4A CN108152227B (en) | 2017-12-07 | 2017-12-07 | Device for testing nano magnetic fluid regulation and control solar full-spectrum frequency division output |
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| CN201711283408.4A CN108152227B (en) | 2017-12-07 | 2017-12-07 | Device for testing nano magnetic fluid regulation and control solar full-spectrum frequency division output |
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| CN108152227A CN108152227A (en) | 2018-06-12 |
| CN108152227B true CN108152227B (en) | 2020-06-16 |
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| CN111207524A (en) * | 2020-03-09 | 2020-05-29 | 山东省产品质量检验研究院 | Automatic adjusting and circulating driving method for solar heat-conducting medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104601103A (en) * | 2014-12-30 | 2015-05-06 | 河海大学常州校区 | Magnetic nano-fluid concentrating photovoltaic combined heat and power generation device |
| CN105823236A (en) * | 2016-04-06 | 2016-08-03 | 河海大学常州校区 | Light condensing type photovoltaic and photothermal device based on magnetic nano fluid |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104601103A (en) * | 2014-12-30 | 2015-05-06 | 河海大学常州校区 | Magnetic nano-fluid concentrating photovoltaic combined heat and power generation device |
| CN105823236A (en) * | 2016-04-06 | 2016-08-03 | 河海大学常州校区 | Light condensing type photovoltaic and photothermal device based on magnetic nano fluid |
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