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Section 5-62 entries

5-6.1heat, amount of heat 5-6.2latent heat

5-6.1

heat, amount of heat

URNurn:iso:std:iso:80000:-5:ed-2:en:item:5-6.1

https://metanorma.github.io/isq-smart/quantities/part-5/t5-6.1
urn:iso:std:iso:80000:-5:ed-2:en:item:5-6.1

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-5:ed-2:en:item:5-6.1

IEC

urn:iec:std:iec:80000-5:2019:::item:5-6.1

Designations

ENheat

FRchaleur

ENamount of heat

FRquantité de chaleur

Symbol

Q

Notation systems

Rendered

Q

AsciiMath

Q

LaTeX

Q

Definition

difference between the increase in the internal energy (internal energy) of a system and the work (ISO 80000-4: Mechanics) done on the system, provided that the amounts of substances within the system are not changed

différence entre l'accroissement de l'énergie interne (internal energy) d'un système et le travail (ISO 80000-4: Mechanics) effectué sur ce système, sous réserve que les quantités de matière à l'intérieur du système ne changent pas

Units

J

joule

View related quantities →

k g \cdot m^{2} \cdot s^{- 2}

kilogram square metre per second squared

View related quantities →

Notes

The heat transferred in an isothermal phase transformation should be expressed as the change in the appropriate state functions, e.g. $T Δ S$ , where $T$ is thermodynamic temperature (thermodynamic temperature) and $S$ is entropy (entropy), or $Δ H$ , where $H$ is enthalpy (enthalpy).

NOTE: A supply of heat can correspond to an increase in thermodynamic temperature or to other effects, such as phase change or chemical processes; see latent heat.

Il convient d'exprimer la chaleur transférée lors d'une transformation de phase isotherme comme étant la variation des fonctions d'état appropriées, par exemple $T Δ S$ , où $T$ est la température thermodynamique (thermodynamic temperature) et $S$ est l'entropie (entropy), ou $Δ H$ , où $H$ est l'enthalpie (enthalpy).

NOTE: Un apport de chaleur peut correspondre à une augmentation de la température thermodynamique ou à d'autres effets, comme un changement de phase ou des processus chimiques, voir latent heat.

Referenced by

heat flow rate heat capacity internal energy efficiency <thermodynamics>

Concept HierarchyPendrill (2024)

L² M T⁻²energy-type quantitiesLevel 0 · Kind

Broader concepts

◇ energy-type 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:t5-6.1

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	5-6.1
skosxl:prefLabel	"heat"@en
skosxl:altLabel	"amount of heat"@en"Q"@en
skos:definition	difference between the increase in the internal energy (<<t5-20.2>>) of a system and the work (<<iso80000-4>>) done on t…
skos:note	The heat transferred in an isothermal phase transformation should be expressed as the change in the appropriate state fu…
isq:hasUnit	J (joule)kgm^2s^(-2) (kilogram square metre per second squared)
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