ASHRAE-Standard-55 - Page 003

Extracted Content

CONTENTS ANSI/ASHRAE Standard 55-2023 Thermal Environmental Conditions for Human Occupancy

SECTION PAGE

Foreword… 2

1 Purpose … 2

2 Scope … 2

3 Definitions… 2

4 General Requirements … 5

5 Conditions That Provide Thermal Comfort … 5

6 Design Compliance … 19

7 Evaluation of Comfort in Existing Buildings… 21

8 References … 24

Normative Appendix A: Operative Temperature and Procedure for Section 5.3… 25

Normative Appendix B: Computer Program for Calculation of Predicted Mean Vote (PMV)… 26

Normative Appendix C: Procedure for Calculating Comfort Impact of Solar Gain on Occupants … 28

Normative Appendix D: Procedure for Evaluating Cooling Effect of Elevated Air Speed Using 

Standard Effective Temperature (SET)… 36

Informative Appendix E: Conditions That Provide Thermal Comfort … 42

Informative Appendix F: Use of Metabolic Rate Data… 45

Informative Appendix G: Clothing Insulation… 46

Informative Appendix H: Comfort Zones Defining Satisfactory Thermal Conditions in Occupied Space … 48

Informative Appendix I: Local Discomfort and Variations with Time… 50

Informative Appendix J: Occupant-Controlled Naturally Conditioned Spaces… 55

Informative Appendix K: Compliance Documentation Template for Thermal Comfort … 58

Informative Appendix L: Measurements, Surveys, and Evaluation of Comfort in Existing Spaces: 

Parts 1 and 2… 59

Informative Appendix M: Informative References and Bibliography… 68

Informative Appendix N: Addenda Description… 72

Online Supporting Files: www.ashrae.org/55Files

NOTE

Approved addenda, errata, or interpretations for this standard can be downloaded free of charge from the ASHRAE website at www.ashrae.org/technology.

© 2023 ASHRAE 180 Technology Parkway · Peachtree Corners, GA 30092 · www.ashrae.org · All rights reserved. ASHRAE is a registered trademark of the American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.

ANSI is a registered trademark of the American National Standards Institute.