GB/T 23681-2009 English PDFUS$634.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 23681-2009: Refrigerating systems and heat pumps -- System flow diagrams and piping instrument diagrams -- Layout and symbols Status: Valid
Basic dataStandard ID: GB/T 23681-2009 (GB/T23681-2009)Description (Translated English): Refrigerating systems and heat pumps -- System flow diagrams and piping instrument diagrams -- Layout and symbols Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: J73 Classification of International Standard: 27.200 Word Count Estimation: 32,395 Date of Issue: 2009-04-17 Date of Implementation: 2009-11-01 Adopted Standard: EN 1861-1998, IDT Regulation (derived from): PRC National Standard Approval Announcement 2009 No.6 (Total No.146) 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 symbols and rules of drawing refrigeration systems and heat pumps and piping system flow chart diagram of the instrument. These graphics illustrate not only the structure and function of the refrigeration system, and is composed of the refrigeration system design, production, installation, production, run, maintenance and downtime necessary part of all technical documents. This standard applies to vapor compression refrigeration, absorption refrigeration, steam jet refrigeration, vortex tube cold, air cooling, absorption refrigeration cooling achieved by working fluid status changes refrigeration system. This standard does not apply to internal heat transfer system implemented by the electrical circuit cooling system, such as the Peltier effect. GB/T 23681-2009: Refrigerating systems and heat pumps -- System flow diagrams and piping instrument diagrams -- Layout and symbols---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. Refrigerating systems and heat pumps. System flow diagrams and piping instrument diagrams. Layout and symbols ICS 27.200 J73 National Standards of People's Republic of China Refrigeration systems and heat pumps System flow diagrams and piping and instrumentation diagrams drawing symbols Posted 2009-04-17 2009-11-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released Table of ContentsPreface Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 classification, information and representation 1 5 Draw 2 6 graphic symbols selection 4 Appendix A (informative) cooling system flow chart legend 19 Annex B (informative) letter code, universal measurement and control symbols and symbols Example 22 References 26ForewordThis standard is equivalent to using the European Committee for Standardization Standard EN1861.1998 "refrigeration systems and heat pumps and piping systems flowchart meter Figure Drawing and symbols. " EN1861 mainly based on ISO 1000 "International System of Units (SI) and International System of Units and certain other multifunction units Use Recommended Practice ", ISO 3098-1" font mapping technology - Part 1. Common letters ", ISO 3511-2" process measurement control functions Energy and instrumentation Symbolic representation - Part 2. Control the basic requirements of supplement ", ISO 3511-3" process measurement and instrumentation provided Preparation of notation - Part 3. Detailed symbols for instrument interconnection diagrams ", ISO 3511-4" process measurement control functions and instrumentation provided Shared display control function of the basic symbols Use ISO 4196 graphic symbols arrow ISO 10628 General process flow chart of the process3 Terms and DefinitionsThe following terms and definitions apply to this standard. 3.1 Reflect refrigeration systems and heat processes, structure and function, with graphic symbols, notes, and alphanumeric code simplified diagram. 4 classification, information and representation 4.1 Overview Depending on the information and the representation of the refrigeration system is a flowchart divided into two categories. --- System flow chart (see 4.2); --- Pipeline instrumentation diagrams (see 4.3). Flowchart should consider requiring function. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 23681-2009_English be delivered?Answer: Upon your order, we will start to translate GB/T 23681-2009_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 23681-2009_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 23681-2009_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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