CN110702606A - Method for rapidly detecting comprehensive shading coefficient of external window on site - Google Patents
Method for rapidly detecting comprehensive shading coefficient of external window on site Download PDFInfo
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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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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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
- G01N21/84—Systems specially adapted for particular applications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/18—Investigating or analyzing materials by the use of thermal means by investigating thermal conductivity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
Abstract
The invention provides a method for rapidly detecting the comprehensive shading coefficient of an external window on site, which is characterized in that a comparison glass test piece is parallelly installed on one side of an external window test piece to be detected through a clamp, a first temperature sensor is installed on the indoor side of the glass test piece in a sticking way through bonding glue, a second temperature sensor is installed on the indoor side of electrochromic glass through bonding glue, and the shading coefficient of the electrochromic glass is rapidly adjusted on site to compare with the heat insulation performance of the glass test piece by utilizing the characteristic that the shading coefficient of the electrochromic glass is adjustable, so that whether the external window test piece meets the corresponding energy-saving design requirement is rapidly and accurately judged. The invention realizes the field detection of the comprehensive shading coefficients of the external windows of different buildings, avoids the poor energy-saving performance of the external windows of the buildings and further ensures the energy-saving effect of the external windows of the buildings.
Description
Technical Field
The invention relates to the technical field of on-site detection of building external windows, in particular to a method for rapidly detecting a comprehensive shading coefficient of an external window on site.
Background
The building external window is a weak link for heat insulation in a building external protection structure, in hot summer and cold winter areas of China, the energy consumption of building refrigeration is very high due to solar radiation in summer, and the solar energy is continuously increased along with warming of the climate, and the switching-off and power limiting in summer become normal, so that the life and social and economic development of people are seriously influenced. At present, more and more architectural engineering adopts sunshade windows such as Low-E hollow glass, heat reflection glass, built-in sunshade hollow glass and the like to effectively reduce energy consumption of air conditioners in summer, and with the attention of governments in China and various places on building energy conservation, the requirements of relevant energy-saving indexes of building external windows are further improved, for example, the comprehensive sunshade coefficient of the south-east, south-west external windows in the south-middle area of residential building energy conservation design standard of Zhejiang province is less than or equal to 0.25.
In order to accurately evaluate the heat insulation performance of the building external window, the detection equipment and the detection method for detecting the door and window sun-shading performance of the door and window or the installation sun-shading device by adopting an artificial light source are introduced in detail in building industry standards of 'building door and window sun-shading performance detection method' JG/T440-2014 and 'building sun-shading product heat insulation performance test method' JG/T281-2010, wherein the size of a test piece is not less than 1.5m and 1.5 m. Although the technology can detect the heat insulation performance of the external window in a laboratory, when the external window is applied in actual engineering, due to different sizes and specifications, and due to the fact that the existing external window heat insulation performance detection equipment is complex in structure and inconvenient to move, the external window heat insulation performance detection equipment cannot be used for detecting the heat insulation performance of the external window on site, a detector can only check heat insulation performance detection reports of products (1.5 m to 1.5m size specification) produced by the same manufacturer to indirectly evaluate whether the heat insulation performance of the external window is qualified, and cannot directly evaluate the heat insulation performance of the external window of multiple specifications and sizes used on site, so that the energy saving performance of the external window of the site building is possibly good again, and the energy saving effect of the building is influenced.
At present, a detection method for evaluating the heat insulation performance of the building external window on site is lacked in the prior art, and a corresponding technology for rapidly detecting the comprehensive shading coefficient of the external window on site is urgently needed to be researched.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a method for rapidly detecting the comprehensive shading coefficient of the external window on site.
Therefore, the invention adopts the following technical scheme: a method for rapidly detecting the comprehensive shading coefficient of an external window on site comprises the following steps:
s1, installing a contrast glass test piece on one side of the outer window test piece to be tested through a clamp, wherein the contrast glass test piece comprises electrochromic glass arranged in parallel with the outer window test piece and a fixing frame fixedly connected with the clamp, and the outer window test piece comprises a window sash frame and a glass test piece;
s2, mounting a first temperature sensor on the indoor side of a glass test piece through bonding glue in a sticking mode, mounting a second temperature sensor on the indoor side of electrochromic glass through bonding glue in a sticking mode, and electrically connecting the first temperature sensor, the second temperature sensor and the electrochromic glass with a control device respectively, wherein the first temperature sensor is used for detecting the air temperature on the indoor side of the glass test piece, the second temperature sensor is used for detecting the air temperature on the indoor side of the electrochromic glass, and the control device is used for controlling the working of the electrochromic glass;
s3, obtaining a sunshade coefficient limit value of the glass test piece, determining a voltage value corresponding to the sunshade coefficient limit value of the glass test piece according to a preset corresponding relation between the sunshade coefficient of the electrochromic glass and the voltage value, and controlling the electrochromic glass to operate for a first preset time at the voltage value so that the sunshade coefficient of the electrochromic glass is changed into the sunshade coefficient limit value;
s4, obtaining the air temperature of the indoor side of the glass test piece and the air temperature of the indoor side of the electrochromic glass in real time in a second preset time after the electrochromic glass operates for the first preset time at the voltage value;
(S5) recording the air temperature of the indoor side of the glass test piece at the starting time point of the second preset time as A1 and the air temperature of the indoor side of the electrochromic glass as B1, and recording the air temperature of the indoor side of the glass test piece at the ending time point of the second preset time as A2 and the air temperature of the indoor side of the electrochromic glass as B2;
s6, calculating a first temperature difference value according to the air temperature A2 of the indoor side of the glass test piece and the air temperature A1 of the indoor side of the glass test piece, and calculating a second temperature difference value according to the air temperature B2 of the indoor side of the electrochromic glass and the air temperature B1 of the indoor side of the electrochromic glass;
s7, judging whether the first temperature difference value is smaller than or equal to the second temperature difference value, if so, judging that the comprehensive shading coefficient of the outer window test piece meets the requirement, and if not, judging that the comprehensive shading coefficient of the outer window test piece does not meet the requirement.
Further, the step S1 is preceded by the following steps:
s01, measuring the size of the hole where the outer window test piece to be tested is located and the size of the outer wall where the outer window test piece is located, calculating the area ratio of the window wall according to the size of the hole where the outer window test piece is located and the size of the outer wall where the outer window test piece is located, and determining the comprehensive coefficient limit value of the outer window according to the orientation of the outer window test piece, the area where the outer window test piece is located and;
s02, the sizes of the window frame and the glass test piece in the outer window test piece are respectively measured, the frame-window ratio is calculated according to the sizes of the window frame and the glass test piece, and the sun shading coefficient limit value of the glass test piece is calculated according to the outer window comprehensive coefficient limit value and the frame-window ratio.
Further, the adhesive glue is black heat-conducting silica gel.
The invention has the beneficial effects that:
(1) the method comprises the steps of installing electrochromic glass on one side of an external window test piece in parallel, utilizing the characteristic that the shading coefficient of the electrochromic glass is adjustable, rapidly adjusting the shading coefficient of the electrochromic glass on site to enable the shading coefficient to be the same as the limiting value of the shading coefficient of the glass test piece, and comparing the heat insulation performance of the adjusted electrochromic glass with the glass test piece to be tested to rapidly and accurately judge whether the external window test piece meets the corresponding energy-saving design requirement or not, so that the energy-saving effect of the building external window is ensured;
(2) the heat insulation performance of the external window test piece with different dimensions can be detected on site, and the test piece is not limited to the dimension specification of 1.5m x 1.5m detected in a laboratory in the prior art, so that the comprehensive shading coefficient of the external window of different buildings can be directly detected on site, the energy-saving performance of the external window of the building is prevented from being secondary and good, and the energy-saving effect of the external window of the building is further ensured;
(3) the characteristics of short time for adjusting the shading coefficient and wide variation range of the shading coefficient are utilized, and the electrochromic glass is creatively applied to the technical field of field detection of the external window, so that the field rapid and accurate evaluation of the heat insulation performance of the external window of the building is realized, and the field detection efficiency and accuracy are greatly improved;
(4) the device for detecting the heat-insulating property of the building external window on site is simple in structure and convenient to move, and the convenience for detecting the heat-insulating property of the building external window on site is effectively improved.
Drawings
FIG. 1 is a first structural diagram of a comprehensive shading coefficient of a building exterior window field test.
FIG. 2 is a second structural diagram of the comprehensive shading coefficient of the building exterior window field test.
Fig. 3 is a schematic diagram of the hardware connection of the control device and various components.
Description of reference numerals: 1-window sash frame, 2-glass test piece, 3-adhesive, 4-first temperature sensor, 5-clamp, 6-fixing frame, 7-electrochromic glass, 8-second temperature sensor and 9-control device.
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 to 3, the embodiment provides a method for rapidly detecting a comprehensive shading coefficient of an external window on site, including the following steps:
s1, pass through anchor clamps 5 installation contrast glass test piece in outer window test piece one side that awaits measuring, the outer window test piece includes window sash frame 1 and glass test piece 2, contrast glass test piece include with outer window test piece parallel arrangement 'S electrochromic glass 7 and with anchor clamps fixed connection' S fixed frame 6, fixed frame 6 is used for fixed electrochromic glass 7, can adopts metal window sash frame.
Specifically, the outer window test piece can be a sliding window or a casement window, the comparison glass test piece is arranged on one side of the opened outer window test piece in parallel, namely the comparison glass test piece is arranged only after the outer window test piece is partially opened, for convenience in installation, the area of the comparison glass test piece is as small as possible, preferably 1/10-1/5 of the outer window test piece, and the arrangement can be realized through a clamp 5; the fixture can adopt a G-shaped fixture in the prior art, one end of the fixture can be adjusted to clamp the outer window test piece (clamped on the window sash frame of the outer window test piece) with different thicknesses, and the other end of the fixture is fixedly connected with the fixing frame in the comparison glass test piece in a welding mode, as shown in figures 1 and 2.
S2, paste the first temperature sensor 4 of installation through gluing 3 at the indoor side of glass test piece, glue 3 installation second temperature sensor 8 at the indoor side of electrochromic glass through gluing to be connected first temperature sensor 4, second temperature sensor 8, electrochromic glass 7 and controlling means 9 electricity respectively, first temperature sensor 4 is used for detecting the indoor air temperature of glass test piece, second temperature sensor 8 is used for detecting the indoor air temperature of electrochromic glass, controlling means 9 is used for controlling electrochromic glass' S work.
Specifically, the electrochromic glass can enable the optical property of the glass to generate reversible color change by adjusting the voltage at two ends of the glass, namely different voltages at two ends of the electrochromic glass correspond to different optical properties and also correspond to different shading coefficients; when the building external window is detected on site, the related building energy-saving design standard only specifies the sunshade coefficient limit value, namely the sunshade coefficient of the building external window is less than or equal to the sunshade coefficient limit value. At present, because the field of the external window cannot realize the detection of the shading coefficient, a detector can only compare a detection report value provided by an external window test piece after the external window test piece is detected in a laboratory with the limiting value of the shading coefficient of the external window, if the detection report value is less than or equal to the limiting value of the shading coefficient of the external window, the external window is judged to be in accordance with the energy-saving design requirement, and if the detection report value is greater than the limiting value of the shading coefficient of the external window, the external window is judged to be not in accordance with the energy-saving design requirement.
S3, obtaining a sunshade coefficient limit value of the glass test piece, determining a voltage value corresponding to the sunshade coefficient limit value of the glass test piece according to a preset corresponding relation between the sunshade coefficient of the electrochromic glass and the voltage value, and controlling the electrochromic glass to operate for a first preset time according to the voltage value so that the sunshade coefficient of the electrochromic glass is changed into the sunshade coefficient limit value.
Specifically, the sun-shading coefficient limit value of the glass test piece can be specified by a construction party and is preset in the control device, and can also be determined by a design unit according to the design standard of local building energy-saving design; the preset corresponding relation between the shading coefficient and the voltage value of the electrochromic glass can be obtained through a large number of tests, namely the shading coefficient of the electrochromic glass when running at different voltage values is respectively detected through the existing building external window heat insulation performance detection equipment, and the corresponding relation between the shading coefficient and the voltage value of the electrochromic glass is established after the detection, wherein the detected plurality of shading coefficient values at least comprise a plurality of shading coefficient limit values in the local building energy-saving design standard. In addition, the control technology of the electrochromic glass adopts the prior art, and the electrochromic response time of the electrochromic glass is generally 20 s-30 s, and the first preset time is preferably 40 s-120 s.
And S4, obtaining the air temperature of the indoor side of the glass test piece and the air temperature of the indoor side of the electrochromic glass in real time in a second preset time after the electrochromic glass runs for the first preset time at the voltage value.
Specifically, the sunshade coefficient of the electrochromic glass is changed into the sunshade coefficient limit value of the glass test piece after the electrochromic glass runs for a first preset time according to the voltage value, the air temperature of the indoor side of the glass test piece is detected and obtained in real time through the first temperature sensor within a second preset time after the electrochromic glass is changed into the sunshade coefficient of the glass test piece, the air temperature of the indoor side of the electrochromic glass is detected and obtained in real time through the second temperature sensor, and the second preset time is 2-10 min.
(S5) recording the air temperature of the indoor side of the glass test piece at the starting time point of the second preset time as A1 and the air temperature of the indoor side of the electrochromic glass as B1, and recording the air temperature of the indoor side of the glass test piece at the ending time point of the second preset time as A2 and the air temperature of the indoor side of the electrochromic glass as B2;
s6, calculating a first temperature difference value according to the air temperature A2 of the indoor side of the glass test piece and the air temperature A1 of the indoor side of the glass test piece, namely the difference value of subtracting the air temperature A1 of the indoor side of the glass test piece from the air temperature A2 of the indoor side of the glass test piece, and calculating a second temperature difference value according to the air temperature B2 of the indoor side of the electrochromic glass and the air temperature B1 of the indoor side of the electrochromic glass, namely the difference value of subtracting the air temperature B1 of the indoor side of the electrochromic glass from the air temperature B2 of the indoor side of the electrochromic glass;
s7, judging whether the first temperature difference value is smaller than or equal to the second temperature difference value, if so, judging that the comprehensive shading coefficient of the outer window test piece meets the requirement, and if not, judging that the comprehensive shading coefficient of the outer window test piece does not meet the requirement.
Specifically, since a part of the heat obtained by the outer window is the solar radiation heat entering the room through the outer window, and the other part is the heat transferred to the room after the outer window absorbs the solar radiation heat, in this embodiment, corresponding temperature sensors are respectively bonded and connected to the indoor sides of the glass test piece and the electrochromic glass, wherein the temperature rise around the temperature sensors is mainly caused by the fact that the sunlight irradiates the temperature sensors through the outer window and the outer window test piece absorbs the solar radiation heat transfers the heat to the vicinity of the temperature sensors, the smaller the temperature rise value is, the smaller the comprehensive sun-shading coefficient of the outer window test piece is, the better the heat-shielding performance is, the first temperature difference value represents the heat-shielding performance of the glass test piece, the second temperature difference value represents the heat-shielding performance of the electrochromic glass with the known sun-shading coefficient, whether the first temperature difference value is less than or equal to the second temperature difference value is judged, if not, the sunshade coefficient of the glass test piece is larger than the sunshade coefficient limit value, and the comprehensive sunshade coefficient of the corresponding external window test piece does not accord with the building energy-saving design standard requirement.
In order to install and remove the convenience, first temperature sensor and second temperature sensor pass through bonding glue and be connected with corresponding test piece bonding respectively, bonding glue best adopts black heat conduction silica gel, can see through outer window test piece with the sunlight and shine temperature sensor on whole absorption, can absorb the heat of solar radiation heat back to indoor transmission almost all transmission near temperature sensor with outer window test piece again, makes the data of first difference in temperature value and second temperature value more accurate, has further improved the accuracy of outer window witnessed inspections comprehensive shading coefficient.
In this embodiment, the sunshade coefficient limit of the glass test piece may be specified by a construction party, or may be determined by a design unit according to a local building energy saving design standard, and since a plurality of comprehensive coefficients of the external window in the existing building design are determined according to the local building energy saving design standard, the step S1 is preceded by the following steps:
s01, measuring the size of the hole where the outer window test piece to be tested is located and the size of the outer wall where the outer window test piece is located, calculating the area ratio of the window wall according to the size of the hole where the outer window test piece is located and the size of the outer wall where the outer window test piece is located, and determining the comprehensive coefficient limit value of the outer window according to the orientation of the outer window test piece, the area where the outer window test piece is located and the.
Specifically, the area ratio of the window wall can be directly obtained by measuring the size on site, the area of the window wall can be determined by looking up a design drawing, the area of the outer window is determined according to the relevant design energy-saving standard selected by the building, for example, the public building energy-saving design standard GB50189-2015 is selected, the area is a severe cold area, a hot summer and cold winter area, a hot summer and warm winter area and the like, the residential building energy-saving design standard Zhejiang province is selected, the area is a north area or a south area,
s02, the sizes of the window frame and the glass test piece in the outer window test piece are respectively measured, the frame-window ratio is calculated according to the sizes of the window frame and the glass test piece, and the sun shading coefficient limit value of the glass test piece is calculated according to the outer window comprehensive coefficient limit value and the frame-window ratio.
Specifically, the frame-window ratio can be directly provided by an external window manufacturer or obtained by field measurement, the sunshade coefficient limit value of the glass test piece can be calculated according to an external window comprehensive sunshade coefficient calculation formula, wherein the external window comprehensive sunshade coefficient calculation formula is that the external window comprehensive sunshade coefficient = the sunshade coefficient limit value of the glass test piece x (1-frame-window ratio)
The embodiment also provides a device for rapidly detecting the comprehensive shading coefficient of the external window on site, which comprises a first temperature sensor 4 arranged on the indoor side of a glass test piece, a second temperature sensor 8 arranged on the indoor side of electrochromic glass 7, a contrast glass test piece arranged on one side of the external window test piece in parallel, a clamp 5 for arranging the contrast glass test piece on one side of the external window test piece in parallel and a control device 9, the comparative glass test piece comprises electrochromic glass 7 arranged in parallel with the outer window test piece and a fixing frame 6 fixedly connected with a clamp, the outer window test piece comprises a window sash frame 1 and a glass test piece 2, the control device 9 is respectively and electrically connected with the first temperature sensor, the second temperature sensor and the electrochromic glass, the first temperature sensor is used for detecting the air temperature of the indoor side of the glass test piece, and the second temperature sensor is used for detecting the air temperature of the indoor side of the electrochromic glass.
The control device is used for controlling the work of the electrochromic glass and comprises an input module, a preset module, a determining module, a control module, an obtaining module, a calculating module and a judging module.
The input module is used for inputting a sunshade coefficient limit value; the preset module is used for setting the corresponding relation between the preset shading coefficient of the electrochromic glass and the voltage value.
The determining module is used for determining the voltage corresponding to the sunshade coefficient limit value of the glass test piece according to the corresponding relation between the preset sunshade coefficient of the electrochromic glass and the voltage value.
The control module is used for controlling the electrochromic glass to operate for a first preset time at a voltage corresponding to the sunshade coefficient limit value of the glass test piece so that the sunshade coefficient of the electrochromic glass is changed into the sunshade coefficient limit value; the acquisition module is used for acquiring the air temperature of the indoor side of the glass test piece and the air temperature of the indoor side of the electrochromic glass in real time in a second preset time after the electrochromic glass runs for the first preset time according to the voltage value.
The calculation module is used for recording the air temperature of the indoor side of the glass test piece at the starting time point of the second preset time as A1 and the air temperature of the indoor side of the electrochromic glass as B1, recording the air temperature of the indoor side of the glass test piece at the finishing time point of the second preset time as A2 and the air temperature of the indoor side of the electrochromic glass as B2, calculating a first temperature difference value according to the air temperature A2 of the indoor side of the glass test piece and the air temperature A1 of the indoor side of the glass test piece, and calculating a second temperature difference value according to the air temperature B2 of the indoor side of the electrochromic glass and the air temperature B1 of the indoor side of the electrochromic glass.
The judging module is used for judging whether the first temperature difference value is smaller than or equal to the second temperature difference value, if so, the comprehensive shading coefficient of the outer window test piece is judged to be in accordance with the requirement, and if not, the comprehensive shading coefficient of the outer window test piece is judged to be not in accordance with the requirement.
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 (3)
1. A method for rapidly detecting the comprehensive shading coefficient of an external window on site is characterized by comprising the following steps:
s1, installing a contrast glass test piece on one side of the outer window test piece to be tested through a clamp, wherein the contrast glass test piece comprises electrochromic glass arranged in parallel with the outer window test piece and a fixing frame fixedly connected with the clamp, and the outer window test piece comprises a window sash frame and a glass test piece;
s2, mounting a first temperature sensor on the indoor side of a glass test piece through bonding glue in a sticking mode, mounting a second temperature sensor on the indoor side of electrochromic glass through bonding glue in a sticking mode, and electrically connecting the first temperature sensor, the second temperature sensor and the electrochromic glass with a control device respectively, wherein the first temperature sensor is used for detecting the air temperature on the indoor side of the glass test piece, the second temperature sensor is used for detecting the air temperature on the indoor side of the electrochromic glass, and the control device is used for controlling the working of the electrochromic glass;
s3, obtaining a sunshade coefficient limit value of the glass test piece, determining a voltage value corresponding to the sunshade coefficient limit value of the glass test piece according to a preset corresponding relation between the sunshade coefficient of the electrochromic glass and the voltage value, and controlling the electrochromic glass to operate for a first preset time at the voltage value so that the sunshade coefficient of the electrochromic glass is changed into the sunshade coefficient limit value;
s4, obtaining the air temperature of the indoor side of the glass test piece and the air temperature of the indoor side of the electrochromic glass in real time in a second preset time after the electrochromic glass operates for the first preset time at the voltage value;
(S5) recording the air temperature of the indoor side of the glass test piece at the starting time point of the second preset time as A1 and the air temperature of the indoor side of the electrochromic glass as B1, and recording the air temperature of the indoor side of the glass test piece at the ending time point of the second preset time as A2 and the air temperature of the indoor side of the electrochromic glass as B2;
s6, calculating a first temperature difference value according to the air temperature A2 of the indoor side of the glass test piece and the air temperature A1 of the indoor side of the glass test piece, and calculating a second temperature difference value according to the air temperature B2 of the indoor side of the electrochromic glass and the air temperature B1 of the indoor side of the electrochromic glass;
s7, judging whether the first temperature difference value is smaller than or equal to the second temperature difference value, if so, judging that the comprehensive shading coefficient of the outer window test piece meets the requirement, and if not, judging that the comprehensive shading coefficient of the outer window test piece does not meet the requirement.
2. The method for rapidly detecting the comprehensive shading coefficient of the external window on site according to claim 1, wherein the step S1 is preceded by the following steps:
s01, measuring the size of the hole where the outer window test piece to be tested is located and the size of the outer wall where the outer window test piece is located, calculating the area ratio of the window wall according to the size of the hole where the outer window test piece is located and the size of the outer wall where the outer window test piece is located, and determining the comprehensive coefficient limit value of the outer window according to the orientation of the outer window test piece, the area where the outer window test piece is located and;
s02, the sizes of the window frame and the glass test piece in the outer window test piece are respectively measured, the frame-window ratio is calculated according to the sizes of the window frame and the glass test piece, and the sun shading coefficient limit value of the glass test piece is calculated according to the outer window comprehensive coefficient limit value and the frame-window ratio.
3. The method for rapidly detecting the comprehensive shading coefficient of the external window on site according to claim 1 or 2, wherein the adhesive is black heat-conducting silica gel.
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