Thermal resistance and thermal conductivity can be easily calculated according to thermal conductivity and thickness of material

Material thermal resistance ( R） And the thermal conductivity ( C) Is the inverse of each other, and by the thermal conductivity ( k） And the thickness of materials is derived. C - Kilocalorie of TCi & trade; So the measures of the thermal conductivity, and pave the way to determine the heat resistance and heat transfer.

- k values Coefficient of thermal conductivity

uniform heat flow through the material thermal conductivity is a stable state of the time rate of per unit area, the unit area by unit temperature gradient on the orientation of the unit area perpendicular to the cause, W/m⋅ K。

( 1)

,

L - Sample thickness ( μ m）

T - Temperature ( K）

q - Heat flow ( W / m2)

- R values Thermal resistance

thermal resistance is in stable state, the structure of the material or the difference in temperature between the two limit surface, its cause by the unit of heat flow per unit area K⋅ m2/ W。 According to the definition and the equation 1, so the equation 2 can be obtained.

as shown in equation 2, thermal resistance value of thickness can be divided by the sample to determine the thermal conductivity.

( 2)

- C values Heat conduction is steady state heat conduction

the structure of the heat flow through the material or the time rate of per unit area, the surface temperature difference caused by the unit, the unit for W/m2 & sdot; K。 Therefore, C value is the reciprocal of R value, can be expressed as formula ( 3) 。

( 3)

as a result, the thermal conductivity of thermal conductivity value can be divided by the thickness of the specimen. Conclusion

thermal resistance and thermal conductivity can be easily calculated according to the thermal conductivity of materials and thickness. C - Kilocalorie of TCi & trade; Is a flexible, rapid, non-destructive, highly sensitive and cost effective, can be directly measured thermal conductivity thermal penetration and a variety of samples, ease instrument to determine the thermal resistance and heat transfer process. Please contact us for more information on TCi three chang instrument.