25 results about "Thermal diffusivity" patented technology

In heat transfer analysis, thermal diffusivity is the thermal conductivity divided by density and specific heat capacity at constant pressure. It measures the rate of transfer of heat of a material from the hot end to the cold end. It has the SI derived unit of m²/s. Thermal diffusivity is usually denoted α but a,h,κ, K, and D are also used. The formula is: α=k/ρcₚ where k is thermal conductivity (W/(m·K)) cₚ is specific heat capacity (J/(kg·K)) ρ is density (kg/m³) Together, ρcₚ can be considered the volumetric heat capacity (J/(m³·K)).