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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

5-20.3

enthalpy

URNurn:iso:std:iso:80000:-5:ed-2:en:item:5-20.3

Download RDF.jsonld .ttl

https://metanorma.github.io/isq-smart/quantities/part-5/t5-20.3
urn:iso:std:iso:80000:-5:ed-2:en:item:5-20.3

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-5:ed-2:en:item:5-20.3

IEC

urn:iec:std:iec:80000-5:2019:::item:5-20.3

Designations

ENenthalpy

FRenthalpie

Symbol

H

Notation systems

Rendered

H

AsciiMath

H

LaTeX

H

Definition

sum of internal energy of the system and the product of pressure and volume of the system:

H = U + p V

where $U$ is internal energy (internal energy), $p$ is pressure (ISO 80000-4: Mechanics), and $V$ is volume (ISO 80000-3: Space and time)

somme de l'énergie interne du système et du produit de la pression par le volume de celui-ci:

H = U + p V

où $U$ est l'énergie interne (internal energy), $p$ est la pression (ISO 80000-4: Mechanics) et $V$ est le volume (ISO 80000-3: Space and time)

Units

J

joule

View related quantities →

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

kilogram square metre per second squared

View related quantities →

Referenced by

heat Gibbs energy specific enthalpy Joule-Thomson coefficient

Concept HierarchyPendrill (2024)

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

Broader concepts

◇ energy-type quantities

Narrower concepts

↓ specific enthalpy ↓ t9-6.2

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:t5-20.3

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	5-20.3
skosxl:prefLabel	"enthalpy"@en
skosxl:altLabel	"H"@en
skos:definition	sum of internal energy of the system and the product of pressure and volume of the system: [stem%unnumbered] ++++ H = U…
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