AS/NZS ISO 16976.5:2024
Respiratory protective devices - Human factors, Part 5: Thermal effects
The objective of this document is to provide information on factors related to human anthropometry, physiology, ergonomics and performance for the preparation of standards for design, testing and use of respiratory protective devices. This document contains information related to thermal effects of respiratory protective devices on the human body. In particular, information is given for: (a) Temperatures of surfaces associated with discomfort sensation and harmful effects on human tissues. (b) Thermal effects of breathing gas temperatures on lung airways and tissues. (c) Effects of breathing gas temperature and humidity on respiratory heat exchange. (d) Effects of respiratory protective devices on overall body heat exchange. The information represents data for adult healthy men and women in the age 20 years to 60 years. This document is identical with, and has been reproduced from ISO 16976‑5:2023, Respiratory protective devices — Human factors — Part 5: Thermal effects.
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AS/NZS ISO 16976.5:2024 Human factors Thermal effects
Preface
Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and abbreviations
3.1 Terms and definitions
3.2 Abbreviated terms and symbols
4 Local thermal effects
4.1 General
4.2 Effects on skin contact by the RPD
4.3 Hot surfaces
4.4 Cold surfaces
4.5 Effects of inhaled breathable gas to, airways and lung tissues
4.5.1 General mask function
4.5.2 Effects caused by hot breathable gas
4.5.3 Effect caused by cold breathable gas
5 Effects on whole body heat balance
5.1 Respiratory heat exchange
5.2 Skin surface heat exchange
5.3 Increased metabolic rate
5.4 Thermoneutral conditions
5.5 Heat stress
5.6 Cold stress
Bibliography
Previous versions
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AS/NZS ISO 16976.5:2024 Human factors Thermal effects
Preface
Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and abbreviations
3.1 Terms and definitions
3.2 Abbreviated terms and symbols
4 Local thermal effects
4.1 General
4.2 Effects on skin contact by the RPD
4.3 Hot surfaces
4.4 Cold surfaces
4.5 Effects of inhaled breathable gas to, airways and lung tissues
4.5.1 General mask function
4.5.2 Effects caused by hot breathable gas
4.5.3 Effect caused by cold breathable gas
5 Effects on whole body heat balance
5.1 Respiratory heat exchange
5.2 Skin surface heat exchange
5.3 Increased metabolic rate
5.4 Thermoneutral conditions
5.5 Heat stress
5.6 Cold stress
Bibliography
Previous versions
AS/NZS ISO 16976.5:2024
Online Library subscription information
Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team.