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ASHRAE Standard 15 34 2019

ASHRAE Standard 15 34 2019

$86.13

ASHRAE Standard 15-2019 (packaged w/ Standard 34-2019) – Safety Standard for Refrigeration Systems and Designation and Classification of Refrigerants (ANSI Approved)

Published By Publication Date Number of Pages
ASHRAE 2019 100
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ASHRAE Standard 15 establishes safeguards for life, limb, health, and property and prescribes safety requirements. This standard is directed toward the safety of persons and property on or near the premises where refrigeration facilities are located. It includes specifications for fabrication of tight systems but does not address the effects of refrigerant emissions on the environment. This standard applies to (a) the design, construction, test, installation, operation, and inspection of mechanical and absorption refrigeration systems, including heat pump systems used in stationary applications; (b) modifications including replacement of parts or components if they are not identical in function and capacity; and (c) substitutions of refrigerant having a different designation. The 2019 edition of Standard 15 incorporates the following changes: • Makes changes to requirements for R-717 ammonia systems • Introduces requirements specific to Low Global Warming Potential (Low GWP) A2L refrigerants • Changes restrictions for small, self-contained systems with higher-flammability refrigerants • Defines “low-probability pumps” and provides requirements for their use • Identifies requirements when changing a refrigerant within the same refrigerant class and lists restrictions on mixing refrigerants from different classes ASHRAE Standard 34 is intended to establish a simple means of referring to common refrigerants instead of using the chemical name, formula, or trade name. It establishes a uniform system for assigning reference numbers, safety classifications, and refrigerant concentration limits to refrigerants. The standard also identifies requirements to apply for designations and safety classifications for refrigerants and to determine refrigerant concentration limits. This standard provides an unambiguous system for numbering refrigerants and assigning composition-designating prefixes for refrigerants. Safety classifications based on toxicity and flammability data are included along with refrigerant concentration limits for the refrigerants. This standard does not imply endorsement or concurrence that individual refrigerant blends are suitable for any particular application. The 2019 edition incorporates the 24 approved and published addenda to Standard 34-2016. Among key changes in the 2019 edition are the following: • Addition of fifteen total new refrigerants • Revisions to make 2L a separate flammability classification of refrigerants • Changes that base toxicity classification on the nominal formulation of the blend • Corrections to language for the proper naming of molecules containing iodine • Revisions to address fluids whose critical temperature is lower than 130°F (54.4°C) • Standardization of terminology

PDF Catalog

PDF Pages PDF Title
1 2019 ASHRAE 15 Cover
3 ASHRAE Committees
5 ANSI/ASHRAE Standard 15-2019 Contents
6 Foreword
1 Purpose
2 Scope
7 3 Definitions
9 4 Occupancy Classification
10 5 Refrigerating System Classification
6 Refrigerant Safety Classification
11 7 Restrictions on Refrigerant Use
15 8 Installation Restrictions
21 9 Design and Construction of Equipment and Systems
29 10 Operation and Testing
11 General Requirements
30 12 Precedence with Conflicting Requirements
13 Listed Equipment
31 Informative Appendix A: Informative References
32 Normative Appendix B: Normative References
33 Informative Appendix C: Method for Calculating Discharge Capacity of Positive Displacement
Compressor Pressure Relief Device
35 Informative Appendix D: Typical Moody Friction Factors for Use in Relief Piping Line Length Limit
36 Normative Appendix E: Allowable Equivalent Length of Discharge Piping
43 Informative Appendix F: Emergencies in Refrigerating Machinery Rooms
45 Informative Appendix G: Addenda Description Information
49 2019 ASHRAE 34 Cover
51 ASHRAE Committees
53 ANSI/ASHRAE Standard 34-2019 Cover
54 Foreword
1 Purpose
2 Scope
3 Definitions
57 4 Numbering of Refrigerants
68 5 Designation
69 6 Safety Group Classifications
72 7 Refrigerant Concentration Limit
73 8 Refrigerant Classifications
9 Application Instructions
76 10 References
78 Informative Appendix A: Isomer Designation Examples
80 Normative Appendix B: Details of Testing—Flammability
83 Informative Appendix C: Bibliography
84 Informative Appendix D: Refrigerant Data
91 Informative Appendix E: Toxicity and Flammability Data for Single-Compound Refrigerants
95 Informative Appendix F: Example Calculations for Heats of Combustion
96 Informative Appendix G: Calculation of RCL and ATEL for Blends
97 Informative Appendix H: Addenda Description Information

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ASHRAE Standard 15 34 2019
$86.13