The Biot Number (Bi) is a crucial dimensionless quantity in heat transfer, indicating the ratio of convective heat transfer at a surface to conductive heat transfer within a solid body. It helps engineers determine if a lumped capacitance analysis is valid, simplifying complex transient heat conduction problems and understanding internal temperature gradients. Calculate Bi easily with our tool.
Formula:
The Biot Number (Bi) is calculated using the formula:
Bi = (h ⋅ Lc) / k
Where:
- h = Convective heat transfer coefficient (W/(m²·K))
- Lc = Characteristic length of the body (m)
- k = Thermal conductivity of the solid (W/(m·K))