"It was possible to adapt to cold environments, for example, by either increasing metabolic heat production, decreasing thermal conductance
, or both--the interaction between the two is what really mattered.
Chen, "Enhancement of thermoelectric performance in beta-graphyne nanoribbons by suppressing phononic thermal conductance
," Carbon, vol.
Thermal H/W Parameter Value SSM  Solar absorptivity 0.1 IR emissivity 0.9 Louver  Solar absorptivity 0.17 Effective IR emissivity 0.7 (open)/0.09 (close) Blade open/close set 0 point ([degrees]C) Heat switch Thermal conductance
6.58 (open)/640.66 (close)  (W/[m.sup.2]/K) 0 Switch open/close set point ([degrees]C) SSM Shutter Radiator Thermo-optical property Table 4 (shutter) Shutter panel open/close 0 set point ([degrees]C) Table 4: Thermo-optical properties of thermal coatings used to shutter.
Remarkably, an exact analytical solution can be constructed using an integral transform method  which provides a complete description of the crossover of the thermal conductance
moments as a function of the system's length, covering all transport regimes: ballistic, metallic, and insulating.
Li, "Nonlinearity enhanced interfacial thermal conductance
and rectification," EPL, vol.
Properties REF VG1 VG2 Thickness of layers (mm) 4 4-0.2-4 4-0.2-4 Emissivity of surfaces (-) 0.85/ 0.85/0.85/ 0.85/0.85/ 0.85 0.85/0.85 0.2/0.85 Solar transmittance (-) 0.92 0.85 0.79 Thermal conductance
at 274.39 4.68 1.62 20[degrees]C (W/[m.sup.2] x K) Table 2: Summary of the collector simulation results.
where S is the solar irradiance incident on the window, [A.sub.STPV] is the surface area of the STPV window, and SHGC and U are the solar heat gain coefficient and the thermal conductance
of the STPV window, respectively.
"Resistors" represent thermal conductance
. The circles are simplified visualizations for more complex electric circuits consisting of a parallel circuit of a current source (heat loss) and a (heat) capacity between the node and "electric ground." The size of a circle correlates with the size of the capacity, the size of an arrow correlates with the size of the current source, and the size of a resistor correlates with the size of conductance.
A slight higher value (typical silica aerogel thermal conductance
of 1218 x [10.sup.-3] W[m.sup.-1] [K.sup.-1])  is probably due to a high bulk density of the gel and loosely packed aerogel granule during measurement .
where G = -[B.sup.-1] A is the thermal conductance
matrix of HotSpot model.
A 1.2-m by 2-m by 0.185-m-thick wall section had an apparent thermal conductance
of only 0.204 W [m.sup.-2] [K.sup.-1] including the structural wood frame, which is equivalent to a US R-value of 27.9 h [ft.sup.2] [degrees]F [Btu.sup.-1] (3.8 h [ft.sup.2] [degrees]F [Btu.sup.-1] [in..sup.-1] for the 7.3-in.-thick wall section).