Home Cart Quotation About-Us
www.ChineseStandard.net
SEARCH

GB/T 36261-2018 English PDF

Q: How long will the true-PDF of English version of GB/T 36261-2018 be delivered?

Upon your order, we will start to translate GB/T 36261-2018_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Q: Can I share the purchased PDF of GB/T 36261-2018_English with my colleagues?

Yes. The purchased PDF of GB/T 36261-2018_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Q: Does the price include tax/VAT?

Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries). Avoidance of Double Taxation Agreements (DTAs) between Singapore and 100+ Countries: https://www.iras.gov.sg/taxes/international-tax

Q: Do you accept my currency other than USD?

Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

US$359.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 36261-2018: On-site test technical condition and calculation for optical and thermal parameters of energy saving glass for building
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 36261-2018	359	Add to Cart	4 days	On-site test technical condition and calculation for optical and thermal parameters of energy saving glass for building	Valid

Similar standards

GB/T 30020 GB/T 39749 GB/T 37781 GB/T 45593 GB/T 45598

Basic data

Standard ID: GB/T 36261-2018 (GB/T36261-2018)
Description (Translated English): On-site test technical condition and calculation for optical and thermal parameters of energy saving glass for building
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Q30
Classification of International Standard: 81.040
Word Count Estimation: 18,163
Date of Issue: 2018-06-07
Date of Implementation: 2019-05-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 36261-2018: On-site test technical condition and calculation for optical and thermal parameters of energy saving glass for building

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
On-site test technical condition and calculation for optical and thermal parameters of energy saving glass for building ICS 81.040 Q30 National Standards of People's Republic of China Energy-saving glass optics and thermal parameters for construction Measurement technical conditions and calculation methods Published on.2018-06-07 2019-05-01 implementation State market supervision and administration China National Standardization Administration issued

Content

Foreword III 1 Scope 1 2 Normative references 1 3 terms and definitions, symbol 1 4 Test Category 2 5 Test principle 3 6 Basic parameters measurement requirements for photothermal calculation 3 7 parameter calculation 5 8 Test Report 7 Appendix A (Normative Appendix) Method for verification of conformity between small samples and finished glass products 8 Appendix B (normative appendix) CIE standard illuminant D65 and CIE standard visible light transmittance and visible light Reflectance calculation parameter 10 Appendix C (normative appendix) Parameters for calculation of solar photothermal performance under atmospheric conditions of 1.5 Appendix D (Normative Appendix) Calculation of Spectral Transmittance and Spectral Reflectance of Each Specimen of the Specimen 13

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by the China Building Materials Federation. This standard is under the jurisdiction of the National Building Glass Standardization Technical Committee (SAC/TC255). This standard is mainly drafted by. Beijing Aobotai Technology Co., Ltd., Dongguan Yintong Glass Co., Ltd., National Glass Quality Supervision Inspection Center, China Building Glass and Industrial Glass Association. Participated in the drafting of this standard. China Glass Holdings Co., Ltd., Guangdong Nanliang Glass Technology Co., Ltd., Beijing Guanhua Oriental Glass Division Technology Co., Ltd., AVIC Sanxin Co., Ltd., Tianjin Beibo Glass Industrial Technology Co., Ltd. The main drafters of this standard. Zhang Yimin, Huang Daquan, Yuan Jing, Li Hui, Huang Jianbin, Liu Qiying, Wan Yongning, Song Jingyu, Wang Yuexiang, Liu Dongyang, Gao Qi, Lin Qingzhong. Energy-saving glass optics and thermal parameters for construction Measurement technical conditions and calculation methods

1 Scope

This standard specifies the test and calculation parameters, test classification and measurement involved in the field test of energy-saving glass optics and thermal parameters for construction. Test principle, basic parameter measurement requirements for light and heat calculation, parameter calculation and test report. This standard applies to field testing of energy-saving glass optics and thermal parameters of buildings that have been installed and to be installed.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 2680 Building glass visible light transmittance, direct sunlight transmittance, total solar transmittance, ultraviolet transmittance and Determination of window glass parameters JGJ/T 151 Thermal Calculation Procedure for Building Door and Window Glass Curtain Wall 3 terms and definitions, symbols 3.1 Terms and definitions The following terms and definitions apply to this document. 3.1.1 Photothermal parameters opticalandthermalparameters Abbreviation for glass optical parameters and thermal parameters. Optical parameters generally refer to visible light transmittance, visible light reflectance, direct sunlight transmission Ratio, direct reflection ratio of sunlight, direct absorption ratio of sunlight, direct transmittance of infrared thermal energy of sunlight; thermal parameters generally refer to total solar transmission Ratio, solar infrared thermal total transmittance, shading coefficient, heat transfer coefficient, photothermal ratio, etc. 3.1.2 Basic parameter for optical and thermal calculation basicparameterforopticalandthermalcalculation Measured parameters for glass optics and thermal calculations, including. glass and gas spacer thickness, film position, corrected radiance, spectrum Transmittance, spectral reflectance, volumetric inert gas volume concentration, and the like. 3.2 symbol The following symbols apply to this document. g --- total solar transmittance; gIR --- solar infrared thermal energy total transmittance; K --- heat transfer coefficient [W/(m2 · K)]; LSG---light to heat ratio; SC --- shading coefficient; Ρe --- direct reflection ratio of sunlight; Ρv --- visible light reflectance; ρ(λ)---spectral reflectance; Τe --- direct transmittance of sunlight; τIR --- direct infrared transmittance of solar thermal energy; Τv --- visible light transmittance; τ(λ)---spectral transmittance.

4 test classification

4.1 First class test The first category is the architectural glass test that can directly test all photothermal parameters using non-destructive testing. 4.2 Second type of test The second type is that the optical parameters can only be directly tested by non-destructive testing at the site, and the architectural glass test of thermal parameters cannot be directly tested. The common building glass types applicable to specific field tests are shown in Table 1. Table 1 Common architectural glass types for field testing Glass product type Photothermal parameter visible Light through Shot ratio Τv Visible light Reflectance Ρv sunshine Direct penetration Shot ratio Τe sunshine Direct counter Shot ratio Ρe sunshine Infrared heat Can directly Transmittance τIR Solar energy Total penetration Shot ratio Heat transfer coefficient Solar energy Infrared heat Can always Shot ratio gIR test classification Monolithic glass √ √ √ √ √ √ √ √ Laminated glass √ √ √ √ √ √ √ √ Uncoated hollow glass √ √ √ √ √ √ √ √ Coating Single cavity Hollow glass Both sides and Under coating √ √ √ √ √ √ √ √ More than two sides Coating √ √ √ √ √ × × × Class II Coating Multi-chamber Hollow glass Both sides and Under coating √ √ √ √ √ √ √ √ More than two sides Coating √ √ √ √ √ × × × Class II Vacuum glass √ √ √ √ √ × × × Class II Note 1. √--- stands for application; ×--- stands for not applicable. Note 2. The optical parameter test is not applicable to glass whose surface is scattering, such as embossed glass, frosted glass, glazed glass, etc. 4.3 Requirements In the first type of test, the photothermal parameters were tested directly on site using a non-destructive test method. The second type of test, optical parameters using non-destructive testing Conduct on-site direct test, thermal engineering parameters according to Appendix A for sample consistency verification, the basis for photothermal calculation of small replacement samples Parameters (hereinafter referred to as the basic parameters) fragmentation test, calculate the total solar transmittance and heat transfer coefficient according to JGJ/T 151, calculated according to GB/T 2680 Solar infrared thermal energy total transmittance.

5 Test principle

For the photothermal parameter test of architectural glass, it is necessary to test the thickness of each layer of glass and spacer layer, spectral transmittance, spectral reflectance, and film surface correction Basic parameters such as the rate of incidence, the volume concentration of the inert gas in the spacer layer. The photothermal parameters are based on the basic parameters in accordance with GB/T 2680 and JGJ/T 151. Calculated, the calculation of glass thermal parameters and the adoption standards are shown in Figure 1. Figure 1 Photothermal parameter calculation and standard diagram

6 Basic parameters measurement requirements for photothermal calculation

6.1 General requirements 6.1.1 Measurements should be made under conditions where the instrument is allowed to use ambient temperature and humidity. 6.1.2 Avoid direct sunlight measurement area during measurement. 6.1.3 The surface of the measurement area to be measured should be clean and free of visible scratches. The sample should be flat glass. 6.2 Glass and spacer thickness measurement 6.2.1 The instrument used to measure the composition of the glass shall be capable of directly measuring the thickness of each piece of glass and spacer layer on the spot, and the maximum allowable instrument The error should be no more than 0.2mm. 6.2.2 For rectangular glass specimens, in the middle of each side and at a distance of no more than 100 mm from the side, as a measuring point, as shown in Figure 2. The thickness of each piece of glass and the thickness of the spacer layer at four points were measured, and the average value of the thickness of each piece of glass and the thickness of the spacer layer was calculated as a glass structure. parameter. Figure 2 Schematic diagram of the measurement position of the glass composition structure 6.3 Spectral transflective ratio measurement 6.3.1 Measurement method Spectrophotometric measurement. 6.3.2 Spectral conditions Wavelength range. 300nm~2500nm, at least 380nm~2500nm; Wavelength interval. The wavelength interval requirement of each parameter in this standard should be met. 6.3.3 Measuring geometry The 8°.8° geometry was used. The angle between the optical axis of the illumination beam and the normal to the surface of the sample does not exceed 10°, and any light in the illumination beam The angle of the optical axis does not exceed 5°. When measuring the transmittance, the measuring instrument should be able to receive the transmission of each side of the insulating glass through multiple reflections. Light. When measuring the reflectance, the measuring instrument should be able to receive the reflected light from multiple reflections on each side of the insulating glass. 6.3.4 Maximum allowable error of the instrument The maximum allowable error for measuring visible light transmittance and direct sunlight transmittance should not be greater than 0.01; measuring visible light reflectance and the sun The maximum allowable error of the direct light reflectance should not be greater than 0.02. 6.4 Emissivity measurement The radiance of the hollow glass film surface is measured by non-destructive measurement, and the radiance is the film surface corrected radiance. The maximum allowable error of the instrument measurement is not Should be greater than 0.02. The measurement position should be greater than 100 mm from the edge of the glass sample. 6.5 Cavity inert gas volume concentration measurement 6.5.1 The volumetric inert gas volume concentration in the hollow cavity is measured by non-destructive measurement. The maximum allowable error of the instrument should not exceed 3.5%. 6.5.2 On both sides of the sample, about 100mm from the edge, select 5 points from top to bottom as the measurement point, as shown in Figure 3. Measured The inert gas volume concentration values at 10 measurement points are calculated and the arithmetic mean is calculated as the volumetric inert gas volume concentration. The unit is mm Figure 3 shows the position of the cavity inert gas measurement in Figure 3.

7 parameter calculation

7.1 Optical parameters 7.1.1 Overall visible light transmittance and reflectance of glass The calculation of the overall visible light transmittance τv of the glass is shown in equation (1). Τv= 780nm λ=380nm τ(λ)DλV(λ)Δλ 780nm λ=380nm DλV(λ)Δλ (1) In the formula. Τv --- the visible light transmittance of the sample as a whole; τ(λ) --- the spectral transmittance of the sample as a whole; Dλ --- relative spectral power distribution of the standard illuminant D65; V(λ) --- CIE standard view function; Δλ --- wavelength interval, is 10 nm; The product of DλV(λ)Δλ---Dλ, V(λ) and the wavelength interval Δλ, and the value of DλV(λ) Δλ are shown in Appendix B. The calculation of the overall visible light reflectance ρv of the glass is given by equation (2). Ρv= 780nm λ=380nm ρ(λ)DλV(λ)Δλ 780nm λ=380nm DλV(λ)Δλ (2) In the formula. Ρv --- the visible light reflectance of the sample as a whole; ρ(λ) --- the spectral reflectance of the sample as a whole; Dλ --- relative spectral power distribution of the standard illuminant D65; V(λ) --- CIE standard view function; Δλ --- wavelength interval, is 10 nm; The product of DλV(λ)Δλ---Dλ, V(λ) and the wavelength interval Δλ, and the value of DλV(λ) Δλ are shown in Appendix B. 7.1.2 Glass direct sunlight transmittance, reflectance The calculation of the direct transmittance τe of the glass as a whole is shown in equation (3). Τe= 2500nm λ=300nm τ(λ)SλΔλ 2500nm λ=300nm SλΔλ (3) In the formula. Τe --- the direct direct transmittance of sunlight of the sample; τ(λ)--the spectral transmittance of the sample as a whole; Sλ --- relative spectral distribution of solar radiation; Δλ --- wavelength interval; SλΔλ---Sλ is the product of the wavelength interval Δλ, and the value of SλΔλ is shown in Appendix C. The direct solar reflectance ratio ρe of the glass is calculated as shown in equation (4). Ρe= 2500nm λ=300nm ρ(λ)SλΔλ 2500nm λ=300nm SλΔλ (4) In the formula. Ρe --- the direct direct reflectance of the sample; ρ(λ)---the spectral reflectance of the sample as a whole; Sλ --- relative spectral distribution of solar radiation; Δλ --- wavelength interval; SλΔλ---Sλ is the product of the wavelength interval Δλ, and the value of SλΔλ is shown in Appendix C. 7.1.3 Glass overall sunlight infrared thermal energy direct transmittance The glass direct sunlight infrared thermal energy direct transmittance τIR calculation is shown in equation (5). τIR= 2500nm λ=780nm τ(λ)SλΔλ 2500nm λ=780nm SλΔλ (5) In the formula. τIR --- the direct transmittance of the solar infrared thermal energy of the sample as a whole; τ(λ)--the spectral transmittance of the sample as a whole; Sλ --- relative spectral distribution of solar radiation; Δλ --- wavelength interval; SλΔλ ---Sλ is the product of the wavelength interval Δλ, and the value of SλΔλ is shown in Appendix C. 7.2 Thermal parameters 7.2.1 Total solar transmittance The calculation of the total solar total transmittance g value of the glass is shown in equation (6). g=τe qi (6) In the formula. g --- the total solar energy transmittance of the sample as a whole; Direct sunlight transmittance in τe ---7.1.2; Qi --- The secondary heat transfer coefficient of the sample to the indoor side. Among them, qi is calculated according to the calculation method specified in JGJ/T 151, and the basic parameters used are obtained by the test specified in Chapter 6 of this standard. The spectral transmittance and spectral reflectance of each piece of glass used in the calculation process are shown in Appendix D. 7.2.2 Heat transfer coefficient The heat transfer coefficient K value is calculated according to JGJ/T 151, and the basic parameters used in the calculation process are obtained by the test specified in Chapter 6 of this standard. 7.2.3 Solar infrared thermal energy total transmittance The total solar infrared thermal energy total transmittance gIR calculation of the glass is shown in equation (7). gIR=τIR qIR,i (7) In the formula. gIR --- the total solar infrared thermal energy total transmittance of the sample; τIR ---7.1.3 direct infrared transmittance of solar thermal energy; qIR, i---Sun infrared secondary heat transfer coefficient of the sample to the indoor side. qIR, i is calculated according to the calculation method specified in GB/T 2680, and the basic parameters used are obtained by the test specified in Chapter 6 of this standard. For the calculation of the spectral transmittance and spectral reflectance of each piece of glass used in the calculation, see Appendix D. 7.2.4 Photothermal ratio The overall photothermal ratio of the glass is calculated by the formula (8). LSG= Τv (8) In the formula. LSG---the photothermal ratio of the sample; Visible light transmittance in τv ---7.1.1; g --- The total solar energy transmittance of the sample.

8 test report

The report should include the following. a) adopt standards; b) sample description; c) test equipment; d) test results; e) test location; f) environmental conditions; g) test personnel; h) Test date.

Appendix A

(normative appendix) Method for verifying the consistency of small samples and finished glass products A.1 Purpose For glass products that cannot be directly tested in the field without lossless direct testing of thermal parameters, which cannot be cut into small pieces for laboratory testing, generally Laboratory tests were performed using small pieces instead of samples, but there is no guarantee that the small replacement samples will be consistent with the characteristics of the glass product. Optical parameters The lossless alignment test verifies the consistency of the small replacement sample with the finished glass product and ensures the reliability of the replacement test. A.2 Verification method A.2.1 Testing A.2.1.1 Directly test the overall spectral transmittance, spectral reflectance (indoor side or outdoor side) of glass products, and calculate the direct sunlight The transmittance τe and the direct sunlight reflectance ρe. A.2.1.2 A small piece of the same material and the same process shall be used to form a small replacement sample of the same configuration as the glass product, which is the same as A.2.1.1. The test method directly tests the overall spectral transmittance, spectral reflectance (indoor side or outdoor side) of the small block substitute sample, and calculates the sunlight separately. Direct transmittance τ'e, direct sunlight reflectance ρ'e. A.2.2 Calculation A.2.2.1 Absolute value of direct transmittance difference of sunlight The absolute value of the direct transmittance difference of sunlight is calculated according to the formula (A.1). Δτe= τe-τ'e (A.1) In the formula. Δτe---the absolute value of the direct transmittance difference of sunlight; Τe --- glass direct product direct sunlight transmittance; Τ'e --- small block replaces the overall direct sunlight transmittance of the sample. A.2.2.2 Absolute value of direct reflectance difference of sunlight The absolute value of the direct reflectance difference of sunlight is calculated according to equation (A.2). Δρe= ρe-ρ'e (A.2) In the formula. Δρe---the absolute value of the direct reflectance difference of sunlight; Ρe --- glass direct product direct reflectance of the finished product; Ρ'e --- small block replaces the overall direct sunlight reflectance of the sample. A.2.2.3 Average value of the absolute value of the 10-point spectral transmittance difference Calculate the average value of the absolute value of the 10-point spectral transmittance difference according to formula (A.3). The 10 wavelength points are selected according to Table A.1. Δτ= i=1 τ(λi)-τ'(λi) (A.3) In the formula. The average value of the absolute value of the Δτ -10 point spectral transmittance difference; Λi ---10 wavelength points, see Table A.1; τ(λi)--the value of the overall spectral transmittance of the glass product at the wavelength λi; τ'(λi)---The value ......

Image

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 36261-2018_English be delivered?

Answer: Upon your order, we will start to translate GB/T 36261-2018_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 36261-2018_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 36261-2018_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.