Three-dimensional turbulent convective heat transfer in the
spiral-coil tube under constant wall temperature has been studied
numerically with control volume method. The numerical computations
reveal the developments and distributions of heat transfer and
flow fields in the spiral-coil tube. The results obtained from the
numerical study are validated by comparing with the measured data.
There is reasonable agreement between the numerical results and the
present experimental data. The induced centrifugal force in the spiralcoil
tube has significant effect on the enhancement of heat transfer.
However, the pressure drop also increases. Due to the centrifugal
force, the Nusselt number and pressure obtained from the spiral-coil
tube are 1.49, 1.50 times higher than those from the straight tube,
respectively.