rdf:type |
qudt:QuantityKind |
dcterms:description |
The rate of heat flow between two systems is measured in watts (joules per second). The formula for rate of heat flow is \(\bigtriangleup Q / \bigtriangleup t = -K \times A \times \bigtriangleup T/x\), where \(\bigtriangleup Q / \bigtriangleup t\) is the rate of heat flow; \(-K\) is the thermal conductivity factor; A is the surface area; \(\bigtriangleup T\) is the change in temperature and \(x\) is the thickness of the material. \(\bigtriangleup T/ x\) is called the temperature gradient and is always negative because of the heat of flow always goes from more thermal energy to less). |
qudt:applicableUnit |
Show 18 values |
qudt:expression |
\(heat-flow-rate\) |
qudt:hasDimensionVector |
qkdv:A0E0L2I0M1H0T-3D0 |
qudt:informativeReference |
http://en.wikipedia.org/wiki/Rate_of_heat_flow |
qudt:latexSymbol |
\(\Phi\) |
qudt:wikidataMatch |
http://www.wikidata.org/entity/Q12160631 |
rdfs:comment |
“Applicable units are those of quantitykind:HeatFlowRate” |
rdfs:isDefinedBy |
http://qudt.org/3.1.10/vocab/quantitykind |
rdfs:label |
“Heat Flow Rate”@en |
skos:broader |
quantitykind:Power |
