Assertion: radiator's heat | /r/HasProperty | the time
Facets:
value: for air turnover
type: PURPOSE
Source sentences:
text: Heat is used to raise the temperature of air so that [latex]\text{Q}=\text{mc}\Delta\text{T}[/latex]. The rate of heat transfer is then [latex]\text{Q}/\text{t}[/latex], where [latex]\text{t}[/latex] is the time for air turnover.