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Section 5-102 entries

5-10.1coefficient of heat transfer 5-10.2surface coefficient of heat transfer

5-10.1

coefficient of heat transfer

URNurn:iso:std:iso:80000:-5:ed-2:en:item:5-10.1

https://metanorma.github.io/isq-smart/quantities/part-5/t5-10.1
urn:iso:std:iso:80000:-5:ed-2:en:item:5-10.1

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-5:ed-2:en:item:5-10.1

IEC

urn:iec:std:iec:80000-5:2019:::item:5-10.1

Designations

ENcoefficient of heat transfer

FRcoefficient de transmission thermique

Symbol

K

(k)

Notation systems

Rendered

K

Rendered

(k)

AsciiMath

K

AsciiMath

(k)

LaTeX

K

LaTeX

( k )

Definition

quotient of density of heat flow rate (density of heat flow rate) and thermodynamic temperature (thermodynamic temperature) difference

quotient de la densité de flux thermique (density of heat flow rate) par la différence de température thermodynamique (thermodynamic temperature)

Units

\frac{W}{m^{2} \cdot K}

watt per square metre kelvin

View related quantities →

k g \cdot s^{- 3} \cdot K^{- 1}

kilogram per second cubed kelvin

View related quantities →

Notes

In building technology, the coefficient of heat transfer is often called thermal transmittance, with the symbol $U$ (no longer recommended). See remark to thermal conductance.

En technologie des bâtiments, le coefficient de transmission thermique est souvent appelé «transmittance thermique» avec le symbole $U$ (qui n'est plus recommandé). Voir la remarque en thermal conductance.

Referenced by

thermal insulance thermal conductance

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:t5-10.1

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	5-10.1
skosxl:prefLabel	"coefficient of heat transfer"@en
skosxl:altLabel	"K"@en"(k)"@en
skos:definition	quotient of density of heat flow rate (<<t5-8>>) and thermodynamic temperature (<<t5-1>>) difference
skos:note	In building technology, the coefficient of heat transfer is often called thermal transmittance, with the symbol stem:[U]…
isq:hasUnit	W/(m^2K) (watt per square metre kelvin)kgs^(-3)*K^(-1) (kilogram per second cubed kelvin)
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