GB/T 11833-2014 English PDFUS$279.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 11833-2014: Determination of steady-state thermal transmission properties of thermal insulation -- Spherical method Status: Valid GB/T 11833: Historical versions
Basic dataStandard ID: GB/T 11833-2014 (GB/T11833-2014)Description (Translated English): Determination of steady-state thermal transmission properties of thermal insulation -- Spherical method Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: Q25 Classification of International Standard: 91.120.10 Word Count Estimation: 12,116 Date of Issue: 6/24/2014 Date of Implementation: 2/1/2015 Older Standard (superseded by this standard): GB/T 11833-1989 Quoted Standard: GB/T 4132 Regulation (derived from): National Standards Bulletin No. 14 of 2014 Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This Standard specifies the use of spherical granular or powdered material means to determine the steady-state heat transfer properties of the method. This Standard applies to the apparent thermal conductivity in the range of (0. 02 to 1. 00) measured W/( GB/T 11833-2014: Determination of steady-state thermal transmission properties of thermal insulation -- Spherical method---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. Determination of steady-state thermal transmission properties of thermal insulation. Spherical method ICS 91.120.10 Q25 National Standards of People's Republic of China Replacing GB/T 11833-1989 Thermal insulation - Determination of steady heat transfer properties of ball method Sphericalmethod Issued on. 2014-06-24 2015-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordThis standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard replaces GB/T 11833-1989 "steady-state heat transfer properties of the insulation measuring sphere Law", in addition to the main editorial changes of outer To technical changes are as follows. --- Removed some terms (see Chapter 3); --- Increased "should be considered to calculate the apparent thermal conductivity of the support tube heat transfer influence" (see Chapter 4); --- An increase of less than half the difference between the particle diameter and the inner diameter of the outer sphere within a sphere with an outer diameter of the test piece "20 times is appropriate." (See 5.1.1); --- Modify the sensitivity and accuracy requirements for temperature and the temperature difference measurement system (see 5.1.5.2); --- The maximum particle size of the material being tested was changed to "should be less than one-tenth the thickness of the sample" (see 6.2); --- Revised "Appendix A thermocouple tolerance and type" part. The standard proposed by China Building Materials Federation. This standard by the National Standardization Technical Committee heat insulating material (SAC/TC191) centralized. This standard is drafted by. Building Materials Research and Design Institute of Henan limited liability company. The main drafters. Zhang Liping, Zhang Maoliang, Zhang Zhou, Xu Yuansheng, PROJECTILES, white Zhaojun. This standard replaces the standards previously issued as follows. --- GB/T 11833-1989. Thermal insulation - Determination of steady heat transfer properties of ball method1 ScopeThis standard specifies the use of the ball device for measuring the particulate or powdered material properties of steady-state heat transfer method. This standard applies to the apparent thermal conductivity in the range of (0.02 to 1.00) Determination of W/(m · K) heat transfer properties of the dried material.2 Normative referencesThe following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 4132 insulation materials and related terms3 Terms and DefinitionsGB/T 4132 defined by the following terms and definitions apply to this document. 3.1 Sample testsample The material being tested by the method specified in the standard sample, measured and reduced to slightly larger than the required number of samples. 3.2 Specimen testspecimen Sample means for measuring the load measurement. Principle 4 Ball ball inside heat transfer means by the heat and cooling the outer sphere concentrically arranged, whose structure shown in Figure 1. Inner and outer ball temperature stability , The heat flow inside the ball Q emitted radially spread outside the ball through the test piece, measured heating power inside the ball, the ball and the temperature of the outer surface of the inner surface of the outer sphere And the geometry of the sphere, according to equation (1) to calculate the apparent thermal conductivity of the material being tested. λα = T1-T2 × D2-D1 D2 × D1 × 2π (1) Where. The apparent thermal conductivity of the material being tested λα --- watts per meter per Kelvin open [W/(m · K)]; Q --- heat flux emitted inside the ball, is numerically equal to the electric power applied to the inner ball on the heat in watts (W); D1 --- inner sphere diameter, in meters (m); D2 --- ball outside diameter, in meters (m); T1 --- inner sphere outer surface temperature, in degrees Kelvin (K); T2 --- outer spherical surface temperature in Kelvin (K). To reduce measurement errors, calculate the apparent thermal conductivity of the support tube should be considered in the impact of heat transfer. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 11833-2014_English be delivered?Answer: Upon your order, we will start to translate GB/T 11833-2014_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 11833-2014_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 11833-2014_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. 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