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Section 5-205 entries

5-20.1energy <thermodynamics>5-20.2internal energy, thermodynamic energy 5-20.3enthalpy 5-20.4Helmholtz energy, Helmholtz function 5-20.5Gibbs energy, Gibbs function

5-20.2

internal energy, thermodynamic energy

URNurn:iso:std:iso:80000:-5:ed-2:en:item:5-20.2

Download RDF.jsonld .ttl

https://metanorma.github.io/isq-smart/quantities/part-5/t5-20.2
urn:iso:std:iso:80000:-5:ed-2:en:item:5-20.2

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-5:ed-2:en:item:5-20.2

IEC

urn:iec:std:iec:80000-5:2019:::item:5-20.2

Designations

ENinternal energy

FRénergie interne

ENthermodynamic energy

FRénergie thermodynamique

Symbol

U

Notation systems

Rendered

U

AsciiMath

U

LaTeX

U

Definition

energy of a system whose change is given by the amount of the heat (heat) transferred to the system and the work (ISO 80000-4: Mechanics) done on the system, provided that the system is closed and no chemical reactions occur

énergie d'un système dont la variation est donnée par la quantité de chaleur (heat) transférée au système et le travail (ISO 80000-4: Mechanics) effectué sur ce système, sous réserve que celui-ci soit fermé et qu'il ne se produise pas de réactions chimiques

Units

J

joule

View related quantities →

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

kilogram square metre per second squared

View related quantities →

Notes

In thermodynamic text books, usually the formula

$Δ U = Q + W$ is used. Note that the zero of the energy is undefined.

Dans les manuels de thermodynamique, la formule

$Δ U = Q + W$ est généralement utilisée. Noter que le zéro de l'énergie est indéfini.

Referenced by

thermodynamic temperature heat energy <thermodynamics>enthalpy Helmholtz energy specific internal energy

Concept HierarchyPendrill (2024)

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

Broader concepts

◇ energy-type quantities

Narrower concepts

↓ specific internal energy ↓ t9-6.1

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:t5-20.2

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	5-20.2
skosxl:prefLabel	"internal energy"@en
skosxl:altLabel	"thermodynamic energy"@en"U"@en
skos:definition	energy of a system whose change is given by the amount of the heat (<<t5-6.1>>) transferred to the system and the work (…
skos:note	In thermodynamic text books, usually the formula stem:[Delta U = Q + W] is used. Note that the zero of the energy is un…
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