TS EN ISO 13731

TS EN ISO 13731 is a vocabulary and symbols standard for the physical quantities used in the ergonomics of the thermal environment. Thermal-environment ergonomics is the field that studies how temperature, humidity, air movement and radiant effects influence human comfort, perception and working conditions. This standard establishes a common technical language for that subject area.

Shared terminology for quantities, symbols and units

The standard brings together the vocabulary and symbols used for thermal-environment quantities, helping reduce ambiguity across related standards and technical publications. In general technical practice, documents of this type support consistent use of terms associated with temperature, heat transfer, relative humidity, thermal comfort assessment and related concepts. That consistency matters because it improves comparability of definitions, equations and reported results.

What this document provides

• Defines physical quantities in the field of ergonomics of the thermal environment.
• Lists the corresponding symbols for those quantities.
• Provides the associated units alongside the terms.
• Serves as a reference vocabulary for future standards and other publications.
• Supports consistent terminology across the discipline.

Accordingly, TS EN ISO 13731 is primarily a terminology and notation reference rather than a test method or performance requirement standard. It is useful to engineers, ergonomists and standards writers who need a stable reference for thermal comfort, heat stress, environmental thermal effects and related concepts.