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5-33

relative humidity

URNurn:iso:std:iso:80000:-5:ed-2:en:item:5-33

https://metanorma.github.io/isq-smart/quantities/part-5/t5-33
urn:iso:std:iso:80000:-5:ed-2:en:item:5-33

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-5:ed-2:en:item:5-33

IEC

urn:iec:std:iec:80000-5:2019:::item:5-33

Designations

ENrelative humidity

FRhumidité relative

Symbol

φ

Notation systems

Rendered

φ

AsciiMath

varphi

LaTeX

\varphi

Definition

quotient of partial pressure of water vapour and partial pressure at its saturation:

φ = \frac{p}{p_{sat}}

where $p$ is partial pressure (ISO 80000-4: Mechanics) of vapour and $p_{sat}$ is its partial pressure at saturation at the same temperature

quotient de la pression partielle de vapeur d'eau par la pression partielle de vapeur d'eau à saturation:

φ = \frac{p}{p_{sat}}

où $p$ est la pression partielle (ISO 80000-4: Mechanics) de vapeur d'eau et $p_{sat}$ est la pression partielle de vapeur d'eau à saturation à la même température

Units

1

one

View related quantities →

Notes

Relative humidity is often referred to as RH and expressed in percent. See also remark in relative mass ratio of vapour.

L'humidité relative est souvent désignée par l'abréviation HR et exprimée en pourcentage. Voir également la remarque en relative mass ratio of vapour.

Referenced by

relative mass concentration of vapour relative mass ratio of vapour

Concept HierarchyPendrill (2024)

1dimensionless quantitiesLevel 0 · Kind

Broader concepts

◇ dimensionless quantities

Ontology
isq:Quantity smart:TermEntry

Class Hierarchy

smart:Entity smart:TermEntryisq:Quantity

A physical quantity as defined in ISO/IEC 80000, with associated symbols, definitions, and units of measurement.

Instance IRI

isq:t5-33

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	5-33
skosxl:prefLabel	"relative humidity"@en
skosxl:altLabel	"varphi"@en
skos:definition	quotient of partial pressure of water vapour and partial pressure at its saturation: [stem%unnumbered] ++++ varphi = p/…
skos:note	Relative humidity is often referred to as RH and expressed in percent. See also remark in <<t5-35>>.
isq:hasUnit	1 (one)
isq:hasDimension	isq:Dimension
smart:hasBindingnessType	bindingness-type:normative
dcterms:isPartOf	isq:part-5

Related Entities

isq:QuantityShape isq:part-5 isq:Unit isq:Dimension isq:hasDimension smart:TermEntry