Physics:Thermal lag

$\text{Thermal Lag}(s)=\frac{L}{\sqrt{2\alpha \mathrm{\Omega }}}$

Examples

In buildings with concrete or masonry walls, thermal lag can result in a difference between the highest interior and highest outdoor temperatures several hours apart. This delay may shift cooling loads to later periods, when air-conditioning systems can operate with cooler outdoor conditions or when the building is not being actively cooled.

See also

• Heat transfer
• Stokes boundary layer