Standard No.:	GB/T 18443.6-2010
English Name:	Testing method of performance for vacuum insulation cryogenic equipment—Part 6:Heat-leak rate measurement
Chinese Name:	真空绝热深冷设备性能试验方法 第6部分：漏热量测量
Chinese Classification:	J74    Pressure vessel
Professional Classification:	GB    National Standard
Source Content Issued by:	AQSIQ; SAC
Issued on:	2010-9-26
Implemented on:	2011-2-1
Status:	valid
Target Language:	English
File Format:	PDF
Word Count:	7000 words
Translation Price(USD):	210.0
Delivery:	via email in 1 business day

1 Scope This part of GB/T 18443 specifies the testing principle and method, testing device, equipment and instrument, testing conditions and preparation, procedure, data processing, testing record and testing report requirements for the heat-leak rate measurement of vacuum insulation cryogenic equipment. This part is applicable to the heat-leak rate measurement of vacuum insulation cryogenic pressure vessels, vacuum insulation cryogenic welded gas cylinders, vacuum insulation pipes and pipe fittings and other vacuum insulation cryogenic equipment except storage and transportation of liquid hydrogen medium; other equipment may refer to the provisions of this part. Flowmeter measurement is applicable to the heat-leak rate measurement of vacuum insulation cryogenic pressure vessels, vacuum insulation cryogenic welded gas cylinders and other vacuum insulation cryogenic equipment; surface temperature measurement is applicable to the heat-leak rate measurement of vacuum insulation pipes and pipe fittings. 2 Normative References The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of GB/T 18443. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this part. However parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. GB/T 18443.1-2010 Testing Method of Performance for Vacuum Insulation Cryogenic Equipment - Part 1: Basic Requirements GB/T 18443.2 Testing Method of Performance for Vacuum Insulation Cryogenic Equipment - Part 2: Vacuum Degree Measurement GB/T 18443.3 Testing Method of Performance for Vacuum Insulation Cryogenic Equipment - Part 3: Leak Rate Measurement GB/T 18443.4 Testing Method of Performance for Vacuum Insulation Cryogenic Equipment - Part 4: Leak-outgassing Rate Measurement GB/T 18443.5-2010 Testing Method of Performance for Vacuum Insulation Cryogenic Equipment - Part 5: Static Vaporation Rate Measurement 3 Terms and Definitions For the purposes of this part, the terms and definitions given in GB/T 18443.1~GB/T 18443.5 and the following apply. 3.1 heat-leak rate the heat quantity transmitted from the surrounding environment to storage media of vacuum insulation cryogenic equipment in unit time, W 3.2 test heat-leak rate

Foreword i 1 Scope 2 Normative References 3 Terms and Definitions 4 Testing Principle and Method 5 Testing Device, Equipment and Instrument 6 Testing Conditions and Preparation 7 Testing Procedure 8 Data Processing 9 Testing Record and Testing Report Annex A (Informative) Heat-leak Rate Testing Record Annex B (Informative) Data Sheet for Physical Properties of Air under Standard Atmosphere Pressure (101.325 kPa) Annex C (Informative) Heat-leak Rate Testing Report