thermal equilibrium


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thermal equilibrium

A condition in which two substances exist at the same temperature and in which heat transfer is therefore in a steady state.
See also: equilibrium
References in periodicals archive ?
Robitaille maintains that the radiation density in the cavity cannot be increased to black body levels by what he terms "driving the reflection" because this would imply a departure from thermal equilibrium which, Robitaille argues, contravenes the initial assumption that thermal equilibrium exists.
A surface temperature is well defined for homogeneous surfaces at thermal equilibrium.
The steady-state is the worst case since the structure is at thermal equilibrium (t = [infinity]) and has maximum temperatures throughout.
As the number of cycles increases, the recovery temperature can be expected to improve as the aquifer strata bounding the storage zone approach thermal equilibrium.
With the honeycomb construction, even Pyrex comes to thermal equilibrium quickly enough.
They are also subject to conductive and convective heat transfer in the establishment of thermal equilibrium.
In particular, the process by which the asymmetry is created must be strongly out of thermal equilibrium, and this cannot be provided by the electroweak phase transition, as was originally expected.
Figure 5 shows step castings 1,2 and 3 poured to bring the mold to a dynamic thermal equilibrium, along with the first casting (4) poured with an insert.
The UL16 features a 16-inch Hubble lightweight "sandwich" primary mirror with 92% reflective semi-enhanced optical coatings designed to rapidly achieve thermal equilibrium.
Much effort has been devoted recently to determine conditions which guarantee that the assumption of local thermal equilibrium (LTE) is accurate when modeling of heat transfer in porous media.
It is further assumed that initially, right after the power outage, the room air and the rack mass are in thermal equilibrium and assume a certain average initial temperature.
They maintain a low temperature of the direction-inverter and generate, consequently, a thermal equilibrium between the surface of the wall and the absorbed air.