-factor , heat transfer factor, Colburn number
https://metanorma.github.io/isq-smart/quantities/part-11/t11-5.8 urn:iso:std:iso:80000:-11:ed-2:en:item:11-5.8
urn:iso:std:iso:80000:-11:ed-2:en:item:11-5.8urn:iec:std:iec:80000-11:2019:::item:11-5.8jCoJqjC oJ qDefinition
relation between heat transfer and mass transfer in a fluid, expressed by
; where
:: is coefficient of heat transfer (ISO 80000-5: Thermodynamics),
:: is specific heat capacity at constant pressure (ISO 80000-5: Thermodynamics),
:: is mass density (ISO 80000-4: Mechanics),
:: is speed (ISO 80000-3: Space and time),
:: is dynamic viscosity (ISO 80000-4: Mechanics), and
:: is thermal conductivity (ISO 80000-5: Thermodynamics)
relation entre le transfert de chaleur et le transfert de masse dans un fluide, exprimée par:
; où
:: est le coefficient de transmission thermique (ISO 80000-5: Thermodynamics);
:: est la capacité thermique massique à pression constante (ISO 80000-5: Thermodynamics);
:: est la masse volumique (ISO 80000-4: Mechanics);
:: est la vitesse (ISO 80000-3: Space and time);
:: est la viscosité dynamique (ISO 80000-4: Mechanics); et
:: est la conductivité thermique (ISO 80000-5: Thermodynamics)
Notes
The heat transfer factor is also given by
; where
:: is the Stanton number for heat transfer (Stanton number <heat transfer>), and
:: is the Prandtl number (Prandtl number).
See also mass transfer factor (mass transfer factor).
Le facteur de transfert de chaleur est également donné par:
; où
:: est le nombre de Stanton pour le transfert de chaleur (Stanton number <heat transfer>); et
:: est le nombre de Prandtl (Prandtl number).
Voir aussi le facteur de transfert de masse (mass transfer factor).
Ontology
Class Hierarchy
A physical quantity as defined in ISO/IEC 80000, with associated symbols, definitions, and units of measurement.
Instance IRI
isq:t11-5.8Properties
| Property | Value |
|---|---|
| rdf:type | |
| dcterms:identifier | 11-5.8 |
| skosxl:prefLabel | "stem:[j]-factor <heat transfer>"@en |
| skosxl:altLabel | "heat transfer factor"@en"Colburn number"@en"j"@en"Co"@en"Jq"@en |
| skos:definition | relation between heat transfer and mass transfer in a fluid, expressed by
stem:[j = K/(c_p rho v) ((c_p eta)/lambda)^(2… |
| skos:note | The heat transfer factor is also given by
stem:[j=St * Pr^(2//3)]; where
stem:[St]:: is the Stanton number for heat tr… |
| isq:hasDimension | |
| smart:hasBindingnessType | |
| dcterms:isPartOf |