CN108318523B - Device for detecting solar heat gain coefficient of building external window by utilizing sunlight - Google Patents
Device for detecting solar heat gain coefficient of building external window by utilizing sunlight Download PDFInfo
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- 230000005855 radiation Effects 0.000 claims abstract description 85
- 238000002834 transmittance Methods 0.000 claims abstract description 77
- 238000005057 refrigeration Methods 0.000 claims abstract description 13
- 239000003566 sealing material Substances 0.000 claims abstract description 8
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Abstract
The invention provides a device for detecting the solar heat gain coefficient of an external window of a building by utilizing sunlight, which comprises an external environment box with an opening, a first air temperature sensor, a second solar total radiation meter, a refrigeration water tank with a water pump, a first water pipe, a second water pipe, a first control device and a second control device, wherein the first air temperature sensor is arranged on the external environment box; the external environment box comprises a first box body and a second box body, the second box body is nested in the first box body, and the periphery of an opening of the second box body and the periphery of the opening of the first box body are sealed through a sealing material to form a water channel space; the water channel space is provided with a water inlet and a water outlet, the water inlet is communicated with the water pump through a second water pipe, and the water outlet is communicated with the refrigeration water tank through a first water pipe; the first control device is used for controlling the light transmittance of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass. The invention has simple structure and can effectively improve the stability and the accuracy of the detection device.
Description
Technical Field
The invention relates to the field of energy-saving performance detection of building external windows, in particular to a device for detecting solar heat gain coefficient of a building external window by utilizing sunlight.
Background
In southern areas of China, due to solar radiation in summer, the energy consumption of building refrigeration is very high, and the switching-off and power limiting in summer become normal, so that the life and the social and economic development of people are seriously influenced. The arrangement of a sun-shading facility on the building external window or the adoption of the external window with the sun-shading function can effectively reduce the energy consumption of an air conditioner in summer, and more external windows with sun-shading devices or external windows with low sun-shading coefficients are installed in the current building engineering.
At present, the parameter for evaluating the energy-saving performance of the light-transmitting enclosure structure in China is the solar heat gain coefficient, and the method for detecting the solar heat gain coefficient of the light-transmitting enclosure structure mainly comprises a natural light detection method and an artificial simulation light source detection method, and the two methods are introduced in detail in GB/T30592-2014. The natural light detection method is used for detecting the heat obtained by the external window by utilizing natural light, but the method is greatly influenced by natural conditions, if the external solar radiation intensity and the temperature are greatly changed during detection, the heat entering the heat metering box is unstable, the temperature of the heat metering box is stable and difficult, and the detected data is unstable.
The manual simulation light source detection method is used for detecting the heat obtained by the external window by utilizing manual simulation light, the manual simulation light is not influenced by external conditions, the detection data are stable, and the manual simulation light source detection method is mainly adopted by related detection mechanisms at present. Although the artificial simulation light source detection method can stably and accurately detect the solar heat gain coefficient of the external window, the cost of the artificial simulation light source is high, the more the spectrum of the artificial simulation light is close to the natural light, the more accurate the detection data is, the artificial simulation light source with the spectrum close to the natural light is required to be adopted for the external window solar heat gain coefficient detection, and the investment cost is too high.
In view of cost, it is most economical to detect the solar heat coefficient of the external window by using sunlight, and there is an urgent need to research related technologies to make the data of the external window detected by sunlight stable and accurate.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a device for detecting the solar heat gain coefficient of an external window of a building by utilizing sunlight.
Therefore, the invention adopts the following technical scheme: a device for detecting solar heat gain coefficient of an external window of a building by utilizing sunlight comprises a solar total radiation meter, a metering box for mounting a test piece, an external environment box provided with an opening, a first air temperature sensor arranged in the external environment box, a first heater arranged in the external environment box, a temperature control system and a data processing system, and further comprises the first heater, a second solar total radiation meter, a refrigeration water tank provided with a water pump, a first water pipe, a second water pipe, a first control device and a second control device; the external environment box comprises a first box body and a second box body, wherein the opening of the first box body and the opening of the second box body face the opening of the external environment box, the second box body is nested in the first box body, and the periphery of the opening of the first box body are sealed through a sealing material to form a water channel space; the first box body comprises a top wall, a front side wall, a rear side wall, a left side wall and a bottom wall, wherein the top wall is made of first electrochromic glass, the front side wall is made of second electrochromic glass, the rear side wall is made of third electrochromic glass, the left side wall is made of fourth electrochromic glass, and the second box body is made of a light-transmitting material; the water channel space is provided with a water inlet and a water outlet, the water inlet is communicated with the water pump through a second water pipe, and the water outlet is communicated with the refrigeration water tank through a first water pipe; the first control device is respectively connected with the first electrochromic glass, the second electrochromic glass, the third electrochromic glass, the fourth electrochromic glass and the second solar total radiation meter and is used for controlling the light transmittance of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass according to the sunlight radiation intensity detected by the second solar total radiation meter and the radiation intensity of the surface of a preset test piece; and the second control device is respectively connected with the first air temperature sensor and the water pump and is used for controlling the operation of the water pump according to the temperature value detected by the first air temperature sensor and the preset first air temperature value.
Further, the device for detecting the solar heat coefficient of the building external window further comprises a second temperature sensor and a third control device, the second temperature sensor and the third control device are arranged on the outer side of the external environment box, the bottom wall is made of fifth electrochromic glass, and the third control device is respectively connected with a second air temperature sensor and the fifth electrochromic glass and is used for controlling the light transmittance of the fifth electrochromic glass according to the temperature value acquired by the second air temperature sensor and the preset second air temperature value.
Further, the sunlight transmittance of the light-transmitting material is not less than 85%.
Further, the light-transmitting material is super-white glass.
Further, the device for detecting the solar heat gain coefficient of the building external window further comprises an electric horizontal roller shutter and a fourth control device, wherein the electric horizontal roller shutter is arranged below the bottom wall, a reflective coating is arranged on the surface of the electric horizontal roller shutter, and the fourth control device is used for controlling the electric horizontal roller shutter to be unfolded and folded according to the solar radiation intensity detected by the second solar total radiation meter and the radiation intensity outside the preset box.
Further, the first control device comprises an acquisition module, a calculation module, a first determination module, a second determination module, a third determination module, a fourth determination module and a control module,
the collecting module is used for collecting the solar radiation intensity detected by the second solar total radiation meter;
the calculation module is used for calculating the light transmittance of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass according to the collected solar radiation intensity detected by the second solar total radiation meter and the radiation intensity of the surface of a preset test piece;
the first determining module is used for determining the working voltage of the first electrochromic glass corresponding to the calculated light transmittance of the first electrochromic glass according to the corresponding relation between the light transmittance of the first electrochromic glass and the working voltage of the first electrochromic glass;
the second determining module is used for determining the working voltage of the preset second electrochromic glass corresponding to the calculated light transmittance of the second electrochromic glass according to the corresponding relation between the preset light transmittance of the second electrochromic glass and the preset working voltage of the second electrochromic glass;
the third determining module is used for determining the preset working voltage of the third electrochromic glass corresponding to the calculated light transmittance of the third electrochromic glass according to the corresponding relation between the preset light transmittance of the third electrochromic glass and the preset working voltage of the third electrochromic glass;
the fourth determining module is used for determining the working voltage of the preset fourth electrochromic glass corresponding to the calculated light transmittance of the fourth electrochromic glass according to the corresponding relation between the light transmittance of the preset fourth electrochromic glass and the working voltage of the preset fourth electrochromic glass;
the control module is used for controlling the working voltage of the first electrochromic glass to operate to the preset working voltage of the first electrochromic glass, controlling the working voltage of the second electrochromic glass to operate to the preset working voltage of the second electrochromic glass, controlling the working voltage of the third electrochromic glass to operate to the preset working voltage of the third electrochromic glass, and controlling the working voltage of the fourth electrochromic glass to operate to the preset working voltage of the fourth electrochromic glass.
Furthermore, the first control device comprises an acquisition module, a calculation module, a determination module and a control module, and wiring terminals of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass are connected in parallel;
the collecting module is used for collecting the solar radiation intensity detected by the second solar total radiation meter;
the calculation module is used for calculating the light transmittance of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass according to the collected solar radiation intensity detected by the second solar total radiation meter and the radiation intensity of the surface of a preset test piece;
the determining module is used for determining the working voltages of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass which are preset and correspond to the light transmittance of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass according to the corresponding relation between the light transmittance of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass and the working voltage of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass which are preset and correspond to the light transmittance of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass;
the control module is used for controlling the working voltages of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass to operate to the preset working voltages of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass.
The invention also adopts the following technical scheme: a device for detecting solar heat gain coefficient of an external window of a building by using simulated light comprises a solar total radiation meter, a metering box for mounting a test piece, a simulated light source box with a light transmitting opening, an external environment box with an opening, a first air temperature sensor arranged in the external environment box, a first heater arranged in the external environment box, a temperature control system and a data processing system, and further comprises a second solar total radiation meter, a refrigeration water tank with a water pump, a first water pipe, a second water pipe, a first control device and a second control device; the external environment box comprises a first box body and a second box body, wherein the opening of the first box body and the opening of the second box body face the opening of the external environment box, the second box body is nested in the first box body, and the periphery of the opening of the first box body are sealed through a sealing material to form a water channel space; the first box body comprises a top wall, a front side wall, a rear side wall, a left side wall and a bottom wall, a light-transmitting opening of the simulated light source box faces the left side wall, the top wall is made of first electrochromic glass, the front side wall is made of second electrochromic glass, the rear side wall is made of third electrochromic glass, the left side wall is made of fifth electrochromic glass, the bottom wall is made of fourth electrochromic glass, and the second box body is made of a light-transmitting material; the water channel space is provided with a water inlet and a water outlet, the water inlet is communicated with the water pump through a second water pipe, and the water outlet is communicated with the refrigeration water tank through a first water pipe; the first control device is respectively connected with the first electrochromic glass, the second electrochromic glass, the third electrochromic glass, the fourth electrochromic glass and the fifth electrochromic glass and is used for controlling the light transmittance of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass, the fourth electrochromic glass and the fifth electrochromic glass; and the second control device is respectively connected with the first air temperature sensor and the water pump and is used for controlling the operation of the water pump according to the temperature value detected by the first air temperature sensor and the preset first air temperature value.
Compared with the prior art, the invention has the beneficial effects that:
(1) the light transmittance of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass is controlled according to the sunlight radiation intensity detected by the second solar total radiation meter and the radiation intensity of the surface of a preset test piece, so that the sunlight irradiating the surface of the test piece is within the range of the radiation intensity of the surface of the preset test piece, the adverse effect of sunlight change on detection is reduced, and the stability and the accuracy of the detection device are effectively improved;
(2) the light-transmitting second box body is nested in the light-adjustable first box body to form a water channel space, the water channel space is communicated with the refrigerating water tank through a water pipe, so that cold water circularly flows in the water channel space, the water channel space with the cooling function can directly absorb heat generated by the first box body due to sunlight absorption, the influence of sunlight change on the air temperature in the external environment box is reduced, and the stability and the accuracy of the detection device are effectively improved;
(3) the bottom wall of the first box body adopting the electrochromic glass can control the light transmittance of the fifth electrochromic glass according to the temperature value acquired by the second air temperature sensor and the preset second air temperature value, so that the operation energy consumption of the detection device is effectively reduced;
(4) the method can be used for detecting the solar heat coefficient of the building external window by using the natural light and the simulated light, and has wide application range.
Drawings
Fig. 1 is a schematic structural view of an apparatus for detecting solar heat gain coefficient of an external window of a building by using sunlight.
Fig. 2 is a schematic structural diagram of the first box.
Fig. 3 is a schematic diagram of a nested structure of the first case and the second case.
FIG. 4 is a schematic structural diagram of an apparatus for detecting solar heat gain coefficient of an external window of a building by using simulated light.
Description of reference numerals: 1-a first water pipe, 2-a refrigerating water tank, 3-a water pump, 4-a first air temperature sensor, 5-an external environment tank, 6-a sealing material, 7-a solar total radiation meter, 8-a metering tank, 9-a first tank, 10-a water channel space, 11-a second tank, 12-a second temperature sensor, 13-a second solar total radiation meter, 14-an electric horizontal rolling screen, 15-a first heater, 16-an analog light source tank, 21-a top wall, 22-a left side wall, 23-a rear side wall, 24-a bottom wall, 25-a front side wall and 26-a second water pipe.
Detailed Description
The invention is explained in further detail below with reference to specific embodiments and with reference to the drawings.
Referring to fig. 1, 2, 3 and 4, fig. 1 is a schematic structural view of an apparatus for detecting a solar heat gain coefficient of an external window of a building by using sunlight, fig. 2 is a schematic structural view of a first box, fig. 3 is a schematic structural view of a nested structure of the first box and a second box, and fig. 4 is a schematic structural view of an apparatus for detecting a solar heat gain coefficient of an external window of a building by using simulated light.
Example 1: as shown in fig. 1, 2 and 3, the device for detecting the solar heat gain coefficient of the building external window by using sunlight comprises a solar total radiation meter 7, a measuring box 8 for installing a test piece, an external environment box 5 with an opening, a first air temperature sensor 4 arranged in the external environment box 5, a first heater 15, a temperature control system and a data processing system.
The device for detecting the solar heat gain coefficient of the building external window further comprises a second solar total radiation meter 13, a refrigeration water tank 2 provided with a water pump 3, a first water pipe 1, a second water pipe 26, a first control device and a second control device.
The external environment box 5 comprises a first box body 9 and a second box body 11, wherein the opening of the first box body 9 and the opening of the second box body 11 face the opening of the external environment box 5, the second box body 11 is embedded in the first box body 9, and the periphery of the opening of the first box body 9 are sealed through a sealing material 6 to form a water channel space 10.
Specifically, the light transmittance of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass can be adjusted by changing the working voltage of the electrochromic glass, a preset change formula or changed corresponding data of the working voltage and the light transmittance of the electrochromic glass is set in the first control device, and the preset change formula or changed corresponding data of the working voltage and the light transmittance of the electrochromic glass can be obtained through a large number of experimental analyses.
The water passage space 10 is provided with a water inlet and a water outlet, the water inlet is communicated with the water pump 3 through a second water pipe 26, and the water outlet is communicated with the refrigeration water tank 2 through a first water pipe 1.
The first control device is respectively connected with the first electrochromic glass, the second electrochromic glass, the third electrochromic glass, the fourth electrochromic glass and the second solar total radiation meter 13 and is used for controlling the light transmittance of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass according to the sunlight radiation intensity detected by the second solar total radiation meter 13 and the preset test piece surface radiation intensity.
Preferably, the light transmittances of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass are changed at the same time, that is, the light transmittances of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass are the same at each moment when being adjusted, and the preset test piece surface radiation intensity is preferably 500W/m2～800W/m2。
It should be noted that the light transmittance calculated according to the preset test piece surface radiation intensity and the solar radiation intensity detected by the second solar total radiation meter 13 is not the same as the light transmittance of the electrochromic glass, and the calculated light transmittance is obtained by multiplying the light transmittance of the electrochromic glass by a preset constant value; the preset constant value is the light transmittance of the water channel space combined with the second box body, and can be obtained through theoretical analysis or a calibration value obtained through a large amount of experimental analysis.
The second control device is respectively connected with the first air temperature sensor 4 and the water pump 3 and is used for controlling the operation of the water pump 3 according to the temperature value detected by the first air temperature sensor 4 and a preset first air temperature value, wherein the preset first air temperature value is preferably 26-35 ℃.
Specifically, the second control device determines whether the temperature value detected by the first air temperature sensor 4 is greater than or equal to a preset first air temperature value, controls the water pump 3 to be turned on when the temperature value detected by the first air temperature sensor 4 is greater than or equal to the preset first air temperature value, and controls the water pump 3 to be turned off when the temperature value detected by the first air temperature sensor 4 is less than the preset first air temperature value.
Preferably, in order to reduce the heating energy consumption of the low-temperature weather detection device, the device for detecting the solar heat gain coefficient of the external window of the building further comprises a second temperature sensor 12 and a third control device which are arranged outdoors, the bottom wall 24 is made of fifth electrochromic glass, and the third control device is respectively connected with the second air temperature sensor 12 and the fifth electrochromic glass and is used for controlling the light transmittance of the fifth electrochromic glass according to the temperature value acquired by the second air temperature sensor 12 and a preset second air temperature value. Wherein the preset second air temperature value is preferably 10-18 ℃.
Specifically, the third control device determines whether the temperature value detected by the second air temperature sensor 4 is greater than or equal to a preset second air temperature value, when the temperature value detected by the second air temperature sensor 4 is greater than or equal to the preset second air temperature value, the light transmittance of the fifth electrochromic glass is controlled to operate to a first preset light transmittance, the first preset light transmittance is 80% -100%, when the temperature value detected by the second air temperature sensor 4 is less than the preset second air temperature value, the light transmittance of the fifth electrochromic glass is controlled to operate to a second preset light transmittance, and the second preset light transmittance is 0% -30%.
Preferably, the light-transmitting material has a solar light transmittance of not less than 85%.
Preferably, the light-transmitting material is ultra-white glass.
Preferably, the device for detecting the solar heat gain coefficient of the building exterior window further comprises an electric horizontal roller shutter 14 and a fourth control device, the electric horizontal roller shutter 14 is arranged below the bottom wall 24, a reflective coating is arranged on the surface of the electric horizontal roller shutter 14, and the fourth control device is used for controlling the electric horizontal roller shutter 14 to be unfolded and folded according to the solar radiation intensity detected by the second solar total radiation meter 13 and the preset box exterior radiation intensity.
Specifically, the fourth control device determines whether the solar radiation intensity detected by the second solar total radiation meter 13 is greater than or equal to a preset out-of-box radiation intensity, and controls the electric horizontal roller shutter 14 to horizontally retract when the solar radiation intensity detected by the second solar total radiation meter 13 is greater than or equal to the preset out-of-box radiation intensity; when the solar radiation intensity detected by the second solar total radiation meter 13 is less than the preset radiation intensity outside the box, the electric horizontal roller shutter 14 is controlled to be horizontally unfolded.
Preferably, the first control device comprises an acquisition module, a calculation module, a first determination module, a second determination module, a third determination module, a fourth determination module and a control module;
the acquisition module is used for acquiring the solar radiation intensity detected by the second solar total radiation meter 13;
the calculation module is used for calculating the light transmittance of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass according to the collected solar radiation intensity detected by the second solar total radiation meter 13 and the radiation intensity of the surface of a preset test piece;
the first determining module is used for determining the working voltage of the first electrochromic glass corresponding to the calculated light transmittance of the first electrochromic glass according to the corresponding relation between the light transmittance of the first electrochromic glass and the working voltage of the first electrochromic glass;
the second determining module is used for determining the working voltage of the preset second electrochromic glass corresponding to the calculated light transmittance of the second electrochromic glass according to the corresponding relation between the preset light transmittance of the second electrochromic glass and the preset working voltage of the second electrochromic glass;
the third determining module is used for determining the preset working voltage of the third electrochromic glass corresponding to the calculated light transmittance of the third electrochromic glass according to the corresponding relation between the preset light transmittance of the third electrochromic glass and the preset working voltage of the third electrochromic glass;
the fourth determining module is used for determining the working voltage of the preset fourth electrochromic glass corresponding to the calculated light transmittance of the fourth electrochromic glass according to the corresponding relation between the light transmittance of the preset fourth electrochromic glass and the working voltage of the preset fourth electrochromic glass;
the control module is used for controlling the working voltage of the first electrochromic glass to operate to the preset working voltage of the first electrochromic glass, controlling the working voltage of the second electrochromic glass to operate to the preset working voltage of the second electrochromic glass, controlling the working voltage of the third electrochromic glass to operate to the preset working voltage of the third electrochromic glass, and controlling the working voltage of the fourth electrochromic glass to operate to the preset working voltage of the fourth electrochromic glass.
Preferably, as the terminals of the first electrochromic glass, the second electrochromic glass and the third electrochromic glass are connected in parallel, the first electrochromic glass, the second electrochromic glass and the third electrochromic glass adopt the same working voltage, for the convenience of control, the first control device comprises an acquisition module, a calculation module, a determination module and a control module, the terminals of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass are connected in parallel,
the acquisition module is used for acquiring the solar radiation intensity detected by the second solar total radiation meter 13;
the calculation module is used for calculating the light transmittance of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass according to the collected solar radiation intensity detected by the second solar total radiation meter 13 and the radiation intensity of the surface of a preset test piece;
the determining module is used for determining the calculated working voltages of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass which correspond to the light transmittance of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass according to the light transmittance of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass which are preset and the working voltages of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass which are preset;
the control module is used for controlling the working voltages of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass to run to the preset working voltages of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass.
Example 2: as shown in fig. 2, 3 and 4, the device for detecting the solar heat gain coefficient of the building external window by using sunlight comprises a solar total radiation meter 7, a simulation light source box 16 with a light transmission opening, a measuring box 8 for installing a test piece, an external environment box 5 with an opening, a first air temperature sensor 4 arranged in the external environment box 5, a first heater 15 arranged in the external environment box, a temperature control system and a data processing system.
The device for detecting the solar heat gain coefficient of the building external window further comprises a second solar total radiation meter 13, a refrigeration water tank 2 provided with a water pump 3, a first water pipe 1, a second water pipe 26, a first control device and a second control device.
The external environment box 5 comprises a first box body 9 and a second box body 11, wherein the opening of the first box body 9 and the opening of the second box body 11 face the opening of the external environment box 5, the second box body 11 is embedded in the first box body 9, and the periphery of the opening of the first box body 9 are sealed through a sealing material 6 to form a water channel space 10.
The water passage space 10 is provided with a water inlet and a water outlet, the water inlet is communicated with the water pump 3 through a second water pipe 26, and the water outlet is communicated with the refrigeration water tank 2 through a first water pipe 1.
The first control device is respectively connected with the first electrochromic glass, the second electrochromic glass, the third electrochromic glass, the fourth electrochromic glass and the fifth electrochromic glass and is used for controlling the light transmittance of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass, the fourth electrochromic glass and the fifth electrochromic glass.
Specifically, the light transmittance of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass, the fourth electrochromic glass and the fifth electrochromic glass can be adjusted by changing the working voltage of the electrochromic glass, a preset working voltage of the electrochromic glass and a change formula of the light transmittance or changed corresponding data are set in the first control device, and the preset working voltage of the electrochromic glass and the change formula of the light transmittance or the changed corresponding data can be obtained through a large number of experimental analyses.
Preferably, the light transmittance of the fourth electrochromic glass is controlled at a preset maximum light transmittance, and the light transmittances of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fifth electrochromic glass are controlled at a preset minimum light transmittance.
The second control device is respectively connected with the first air temperature sensor 4 and the water pump 3 and is used for controlling the operation of the water pump 3 according to the temperature value detected by the first air temperature sensor 4 and the preset first air temperature value.
Wherein the preset first air temperature value is preferably 26-35 ℃.
Specifically, the second control device determines whether the temperature value detected by the first air temperature sensor 4 is greater than or equal to a preset first air temperature value, controls the water pump 3 to be turned on when the temperature value detected by the first air temperature sensor 4 is greater than or equal to the preset first air temperature value, and controls the water pump 3 to be turned off when the temperature value detected by the first air temperature sensor 4 is less than the preset first air temperature value.
The protection scope of the present invention is not limited to the above description, and any other products with the same or similar technical solutions as or to the present invention, regardless of the shape or structure, are within the protection scope of the present invention.
Claims (8)
1. A device for detecting solar heat gain coefficient of an external window of a building by utilizing sunlight comprises a solar total radiation meter (7), a metering box (8) for mounting a test piece, an external environment box (5) with an opening, a first air temperature sensor (4) arranged in the external environment box (5), a first heater (15) arranged in the external environment box, a temperature control system and a data processing system, and is characterized by further comprising a second solar total radiation meter (13), a refrigerating water tank (2) with a water pump (3), a first water pipe (1), a second water pipe (26), a first control device and a second control device; the external environment box (5) comprises a first box body (9) and a second box body (11), the opening of the first box body (9) and the opening of the second box body (11) face the opening of the external environment box (5), the second box body (11) is embedded in the first box body (9), and the periphery of the opening of the first box body (9) are sealed through a sealing material (6) to form a water channel space (10); the first box body (9) comprises a top wall (21), a front side wall (25), a rear side wall (23), a left side wall (22) and a bottom wall (24), the top wall (21) is made of first electrochromic glass, the front side wall (25) is made of second electrochromic glass, the rear side wall (23) is made of third electrochromic glass, the left side wall (22) is made of fourth electrochromic glass, and the second box body (11) is made of a light-transmitting material; the water channel space (10) is provided with a water inlet and a water outlet, the water inlet is communicated with the water pump (3) through a second water pipe (26), and the water outlet is communicated with the refrigeration water tank (2) through a first water pipe (1); the first control device is respectively connected with the first electrochromic glass, the second electrochromic glass, the third electrochromic glass, the fourth electrochromic glass and the second solar total radiation meter (13) and is used for controlling the light transmittance of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass according to the solar radiation intensity detected by the second solar total radiation meter (13) and the radiation intensity of the surface of a preset test piece; and the second control device is respectively connected with the first air temperature sensor (4) and the water pump (3) and is used for controlling the operation of the water pump (3) according to the temperature value detected by the first air temperature sensor (4) and the preset first air temperature value.
2. The device for detecting the solar heat coefficient of the external window of the building according to claim 1, further comprising a second temperature sensor (12) and a third control device arranged outside the external environment box (5), wherein the bottom wall (24) is made of fifth electrochromic glass, and the third control device is respectively connected with the second air temperature sensor (12) and the fifth electrochromic glass and is used for controlling the light transmittance of the fifth electrochromic glass according to the temperature value collected by the second air temperature sensor (12) and the preset second air temperature value.
3. The device for detecting the solar heat gain coefficient of the building external window by utilizing the sunlight as claimed in claim 1 or 2, wherein the sunlight transmittance of the light-transmitting material is not less than 85%.
4. The device for detecting the solar heat gain coefficient of the building exterior window by utilizing the sunlight as claimed in claim 1 or 2, wherein the light-transmitting material is ultra-white glass.
5. The device for detecting the solar heat gain coefficient of the external window of the building by using the sunlight as claimed in claim 1 or 2, further comprising an electric horizontal roller shutter (14) arranged below the bottom wall (24), wherein the surface of the electric horizontal roller shutter (14) is provided with a reflective coating, and a fourth control device for controlling the expansion and the contraction of the electric horizontal roller shutter (14) according to the sunlight radiation intensity detected by the second solar total radiation meter (13) and the preset box external radiation intensity.
6. The device for detecting the solar heat gain coefficient of the external window of the building by utilizing the sunlight as claimed in claim 1 or 2, wherein the first control device comprises an acquisition module, a calculation module, a first determination module, a second determination module, a third determination module, a fourth determination module and a control module,
the acquisition module is used for acquiring the solar radiation intensity detected by the second solar total radiation meter (13);
the calculation module is used for calculating the light transmittance of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass according to the collected solar radiation intensity detected by the second solar total radiation meter (13) and the radiation intensity of the surface of a preset test piece;
the first determining module is used for determining the working voltage of the first electrochromic glass corresponding to the calculated light transmittance of the first electrochromic glass according to the corresponding relation between the light transmittance of the first electrochromic glass and the working voltage of the first electrochromic glass;
the second determining module is used for determining the working voltage of the preset second electrochromic glass corresponding to the calculated light transmittance of the second electrochromic glass according to the corresponding relation between the preset light transmittance of the second electrochromic glass and the preset working voltage of the second electrochromic glass;
the third determining module is used for determining the preset working voltage of the third electrochromic glass corresponding to the calculated light transmittance of the third electrochromic glass according to the corresponding relation between the preset light transmittance of the third electrochromic glass and the preset working voltage of the third electrochromic glass;
the fourth determining module is used for determining the working voltage of the preset fourth electrochromic glass corresponding to the calculated light transmittance of the fourth electrochromic glass according to the corresponding relation between the light transmittance of the preset fourth electrochromic glass and the working voltage of the preset fourth electrochromic glass;
the control module is used for controlling the working voltage of the first electrochromic glass to operate to the preset working voltage of the first electrochromic glass, controlling the working voltage of the second electrochromic glass to operate to the preset working voltage of the second electrochromic glass, controlling the working voltage of the third electrochromic glass to operate to the preset working voltage of the third electrochromic glass, and controlling the working voltage of the fourth electrochromic glass to operate to the preset working voltage of the fourth electrochromic glass.
7. The device for detecting the solar heat gain coefficient of the building exterior window by using the sunlight as claimed in claim 1 or 2, wherein the first control device comprises an acquisition module, a calculation module, a determination module and a control module, and the terminals of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass are connected in parallel;
the acquisition module is used for acquiring the solar radiation intensity detected by the second solar total radiation meter (13);
the calculation module is used for calculating the light transmittance of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass according to the collected solar radiation intensity detected by the second solar total radiation meter (13) and the radiation intensity of the surface of a preset test piece;
the determining module is used for determining the working voltages of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass which are preset and correspond to the light transmittance of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass according to the corresponding relation between the light transmittance of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass and the working voltage of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass which are preset and correspond to the light transmittance of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass;
the control module is used for controlling the working voltages of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass to operate to the preset working voltages of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass and the fourth electrochromic glass.
8. A device for detecting the solar heat gain coefficient of an external window of a building by using simulated light comprises a solar total radiation meter (7), a metering box (8) for mounting a test piece, a simulated light source box (16) with a light transmission opening, an external environment box (5) with an opening, a first air temperature sensor (4) arranged in the external environment box (5), a first heater (15) arranged in the external environment box, a temperature control system and a data processing system, and is characterized in that the device for detecting the solar heat gain coefficient of the external window of the building further comprises a second solar total radiation meter (13), a refrigerating water tank (2) with a water pump (3), a first water pipe (1), a second water pipe (26), a first control device and a second control device; the external environment box (5) comprises a first box body (9) and a second box body (11), the opening of the first box body (9) and the opening of the second box body (11) face the opening of the external environment box (5), the second box body (11) is embedded in the first box body (9), and the periphery of the opening of the first box body (9) are sealed through a sealing material (6) to form a water channel space (10); the first box body (9) comprises a top wall (21), a front side wall (25), a rear side wall (23), a left side wall (22) and a bottom wall (24), a light-transmitting opening of the simulated light source box (16) faces towards the left side wall (22), the top wall (21) is made of first electrochromic glass, the front side wall (25) is made of second electrochromic glass, the rear side wall (23) is made of third electrochromic glass, the left side wall (22) is made of fourth electrochromic glass, the bottom wall (24) is made of fifth electrochromic glass, and the second box body (11) is made of light-transmitting materials; the water channel space (10) is provided with a water inlet and a water outlet, the water inlet is communicated with the water pump (3) through a second water pipe (26), and the water outlet is communicated with the refrigeration water tank (2) through a first water pipe (1); the first control device is respectively connected with the first electrochromic glass, the second electrochromic glass, the third electrochromic glass, the fourth electrochromic glass and the fifth electrochromic glass and is used for controlling the light transmittance of the first electrochromic glass, the second electrochromic glass, the third electrochromic glass, the fourth electrochromic glass and the fifth electrochromic glass; and the second control device is respectively connected with the first air temperature sensor (4) and the water pump (3) and is used for controlling the operation of the water pump (3) according to the temperature value detected by the first air temperature sensor (4) and the preset first air temperature value.
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