Mathematical model of Heat Transfer Coefficient through the annulus gap between concentric pipes filled with solid body:
U = \frac{\lambda}{r_{in} \cdot \ln (r_{out}/r_{in})} |
where
| thermal conductivity of the solid body | |
| inner radius of outer pipe | |
| outer radius of inner pipe |
For the thin walls the
equation simplifies to:
U = \frac{\lambda}{h} |
where
| wall thickness |
Physics / Thermodynamics / Heat Transfer / Heat Transfer Coefficient (HTC) / Heat Transfer Coefficient (HTC) @model
[ Thermal conductivity ] [ Nusselt number (Nu) ]