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5-35

relative mass ratio of vapour

URNurn:iso:std:iso:80000:-5:ed-2:en:item:5-35

https://metanorma.github.io/isq-smart/quantities/part-5/t5-35
urn:iso:std:iso:80000:-5:ed-2:en:item:5-35

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-5:ed-2:en:item:5-35

IEC

urn:iec:std:iec:80000-5:2019:::item:5-35

Designations

ENrelative mass ratio of vapour

FRrapport relatif de masse de vapeur

Symbol

ψ

Notation systems

Rendered

ψ

AsciiMath

psi

LaTeX

\psi

Definition

quotient of mass ratio of water vapour to dry gas and mass ratio of water vapour to dry gas at saturation:

ψ = \frac{r}{r_{sat}}

where $r$ is mass ratio of water vapour to dry gas (mass ratio of water vapour to dry gas) and $r_{sat}$ is its mass ratio of water vapour to dry gas at saturation of the same temperature

quotient du rapport de la masse de vapeur d'eau à la masse de gaz sec par le rapport de la masse de vapeur d'eau à la masse de gaz sec à saturation:

ψ = \frac{r}{r_{sat}}

où $r$ est le rapport de la masse de vapeur d'eau à la masse de gaz sec (mass ratio of water vapour to dry gas) et $r_{sat}$ est le rapport de la masse de vapeur d'eau à la masse de gaz sec à saturation à la même température

Units

1

one

View related quantities →

Notes

This quantity is also used as an approximation of relative humidity (relative humidity).

Cette grandeur est également utilisée comme une approximation de l'humidité relative (relative humidity).

Referenced by

relative humidity

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:t5-35

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	5-35
skosxl:prefLabel	"relative mass ratio of vapour"@en
skosxl:altLabel	"psi"@en
skos:definition	quotient of mass ratio of water vapour to dry gas and mass ratio of water vapour to dry gas at saturation: [stem%unnumb…
skos:note	This quantity is also used as an approximation of relative humidity (<<t5-33>>).
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