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Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 40815.5-2022: Mechanical structures for electrical and electronic equipment - Thermal management for cabinets in accordance with inch and metric system - Part 5: Cooling performance evaluation for indoor cabinets Status: Valid
Basic dataStandard ID: GB/T 40815.5-2022 (GB/T40815.5-2022)Description (Translated English): Mechanical structures for electrical and electronic equipment - Thermal management for cabinets in accordance with inch and metric system - Part 5: Cooling performance evaluation for indoor cabinets Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: K05 Classification of International Standard: 31.240 Word Count Estimation: 18,160 Date of Issue: 2022-11-08 Date of Implementation: 2023-06-01 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 40815.5-2022: Mechanical structures for electrical and electronic equipment - Thermal management for cabinets in accordance with inch and metric system - Part 5: Cooling performance evaluation for indoor cabinets---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. Mechanical structures for electrical and electronic equipment - Thermal management for cabinets in accordance with inch and metric system - Part 5.Cooling performance evaluation for indoor cabinets ICS 31.240 CCSK05 National Standards of People's Republic of China Mechanical construction of electrical and electronic equipment Compliant with thermal management of imperial and metric series cabinets Part 5.Evaluation of cooling performance of indoor cabinets forindoorcabinets, IDT) 2022-11-08 release 2023-06-01 implementation State Administration for Market Regulation Released by the National Standardization Management Committee table of contentsPreface I Introduction II 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Cooling Classification Criteria for Cabinets 3 5 Cooling performance of the cabinet 4 5.1 General 4 5.2 Cooling methods for indoor cabinets 4 5.2.1 Classification of cooling methods 4 5.2.2 Cooling performance 4 5.2.3 Temperature rise concept 5 5.2.4 Temperature rise limit 5 5.3 Natural convection cooling 5 5.4 Natural ventilation cooling 5 5.5 Forced air cooling (forced ventilation) 6 5.6 Typical example of calculating cooling performance 6 Appendix A (informative) background information 8 A.1 Calculation of wind speed for natural ventilation 8 A.2 Background information on the verification of test results by CFD simulation 8 Reference 14 Figure 1 Natural convection cooling 3 Figure 2 Natural ventilation cooling 3 Figure 3 Forced air cooling 4 Figure 4 The relationship between natural convection velocity and cabinet height6 Figure A.1 Equilibrium force of air inside the cabinet 8 Figure A.2 Example of thermal simulation --- Type A 9 Figure A.3 Thermal Simulation Example --- Type B 10 Figure A.4 Thermal Simulation Example --- Type C 11 Figure A.5 Thermal simulation example --- D type 12 Figure A.6 Thermal Simulation Example --- Type E 13 Table 1 Cooling method classification 4 Table 2 Typical example for calculating cooling performance7forewordThis document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules for Standardization Documents" drafting. This document is the first part of GB/T 40815 "The mechanical structure of electrical and electronic equipment conforms to the thermal management of imperial series and metric series cabinets" 5 parts. GB/T 40815 has issued the following parts. --- Part 2.Determination method of forced air cooling; --- Part 4.Cooling performance test of water supply heat exchanger in electronic cabinet; --- Part 5.Cooling performance evaluation of indoor cabinets. This document is equivalent to IEC 62610-5.2016 "Mechanical structure of electrical and electronic equipment in accordance with IEC 60297 and IEC 60917 Thermal Management of Column Cabinets Part 5.Cooling Performance Evaluation of Indoor Cabinets. The following minimal editorial changes have been made to this document. --- In order to coordinate with existing standards, change the name of the standard to "Electrical and electronic equipment mechanical structure complies with imperial series and metric series machines Thermal Management of Cabinets Part 5.Evaluation of Cooling Performance of Indoor Cabinets. Please note that some contents of this document may refer to patents. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed and managed by the National Technical Committee for Comprehensive Standardization of Electrical and Electronic Equipment Structure (SAC/TC34). This document is drafted by. Fiberhome Communication Technology Co., Ltd., Shenzhen Quality Standard Technology Co., Ltd., Xiamen Kunjin Electronic Technology Co., Ltd. Division, Nanjing Nanrui Jibao Electric Co., Ltd., Beijing Institute of Electrical Technology and Economics of Machinery Industry, China Electronics Technology Group Corporation No. 36 Research Institute, Beijing Sifang Jibao Engineering Technology Co., Ltd., Guodian Nanjing Automation Co., Ltd., Moxi Electric Co., Ltd., XJ Electric Co., Ltd., China Coal Electric Co., Ltd., Suzhou Electrical Appliance Science Research Institute Co., Ltd., Legrand Low Voltage Electrical Appliances (Wuxi) Co., Ltd. Division, Yueqing Feilei Cabinet Lock Co., Ltd., Zhongte Technology Industry (Qingdao) Co., Ltd., Shandong Luyuan Electrical Equipment Co., Ltd., Shenzhen Technology University Science, Dongguan Ruijing Electric Technology Co., Ltd., Xi'an Libeian Intelligent Technology Co., Ltd., Yiwu Hongtao Mold Co., Ltd., China Electrical Appliance Industry association. The main drafters of this document. Wang Zhiyong, Yang Xingxing, Liu Xiang, Yin Donghai, Li Jianxia, Wang Dong, Jin Dayuan, Han Zaolin, Bao Anqun, Mu Linsen, Guo Shengjun, Wang Jingyang, Yan Shiting, Ji Tangfu, Ma Chaoqun, Xu Feilei, Jia Peng, Li Xueqiang, Li Yingping, Li Ning, Hu Kuolei, Lin Jinli, Liu Songlin, Liu Yuanzhen.IntroductionInch series and metric series cabinets are widely used in data center computer rooms and various communication equipment computer rooms for installing various information and communication communication equipment. In order to improve the heat dissipation efficiency of the equipment in the cabinet, ensure the safe and effective operation of the equipment, and reduce the energy consumption of the equipment room, GB/T 40815 "Electrical The mechanical structure of gas and electronic equipment conforms to the thermal management of imperial series and metric series cabinets The thermal management method provides a design guide for the thermal management of the cabinet. The main problems it solves are. ---Specify the universal installation interface specifications and requirements of the thermoelectric cooling system for indoor electronic cabinets; ---Specify the optimal air duct design specifications and requirements for indoor electronic cabinets and cabinet insert boxes and cabinets; ---Specify the cooling performance evaluation specifications for indoor electronic cabinets and thermoelectric cooling systems; ---Specify the performance test specifications and requirements for water supply heat exchangers in indoor electronic cabinets; ---Specify the test specifications for air recirculation and bypass of indoor electronic cabinets. GB/T 40815 "Thermal Management of Electrical and Electronic Equipment Mechanical Structures Conforming to Inch Series and Metric Series Cabinets" is proposed to be composed of six parts constitute. --- Part 1.Design guidelines Thermoelectric cooling system (Peltier effect) interface dimensions and regulations. Designed to standardize thermoelectric cooling systems The system has universal installation interface dimensions and requirements. --- Part 2.Determination method of forced air cooling. It is designed to specify the preferred air duct form and design for indoor electronic cabinets, sub-boxes, and chassis method. --- Part 3.Design Guidelines Evaluation method for thermoelectric cooling systems (Peltier effect). Designed to standardize the performance of thermoelectric cooling systems Can evaluate methods and provide design guidelines. --- Part 4.Cooling performance test of the water supply heat exchanger in the electronic cabinet. Designed to specify performance test specifications for water supply heat exchangers Fan, to guide the experiment. --- Part 5.Cooling performance evaluation of indoor cabinets. It is intended to specify a method for assessing the air cooling capacity of indoor electronic cabinets. --- Part 6.Air recirculation and bypass for indoor cabinets. Tests designed to specify air recirculation and bypass for indoor electronic cabinets specification. Among them, the international documents corresponding to the design guidelines of Part 1 and Part 3 have not yet been transformed into Chinese documents due to immature technical content. This document classifies the cooling methods of empty indoor cabinets, simplifies the thermal-hydraulic formulas used to evaluate and classify the cooling performance of cabinets, and introduces A simplified method for evaluating the overall cooling performance of an empty indoor cabinet is presented. Provides a standardized evaluation of the cooling performance of indoor cabinets estimation method. Mechanical construction of electrical and electronic equipment Compliant with thermal management of imperial and metric series cabinets Part 5.Evaluation of cooling performance of indoor cabinets1 ScopeThis document specifies an assessment in accordance with IEC 60297 (all parts) and IEC 60917 (all parts) and mainly uses air convection A method of cooling the cooling capacity of an empty cabinet.2 Normative referencesThis document has no normative references.3 Terms and DefinitionsThe following terms and definitions apply to this document. 3.1 ventilation ventilation The movement of air inside the cabinet, causing the air inside the cabinet to be replaced by ambient air outside the cabinet. 3.2 Buoyancy The opposing force of the air in the direction of gravity, resulting from the difference in density due to the temperature difference between the air inside and outside the cabinet. 3.3 natural ventilation Air movement caused by buoyancy. 3.4 Air flow device for ventilation. 3.5 Natural air convection and radiant cooling. 3.6 Air moving device airmovingdevice Devices that generate air movement, such as fans, blowers, and other devices that force air movement. 3.7 The cabinet is not equipped with ventilation holes and air flow devices, and the heat is transferred to the outside through natural convection and radiation on the outer surface of the cabinet environment. NOTE. The internal air temperature gradually increases from the bottom to the top of the cabinet. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 40815.5-2022_English be delivered?Answer: Upon your order, we will start to translate GB/T 40815.5-2022_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 40815.5-2022_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 40815.5-2022_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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