(Color online) U-shaped pipe inside a cube when S/D = 5.
(Color online) The velocity distribution and the mean temperature θ f along the length of the U-pipe.
(a) The fluid outlet and the solid average temperature vs time, and (b) The effect of the Reynolds number on the outlet temperature.
(a) The effect of S/D on the outlet temperature, and (b) The relation between spacing, outlet temperature and time.
Three shapes of the solid volume.
The effect of volume shape on the outlet temperature.
Four pipe shapes in a solid cube, and the fluid temperature along the length of serpentine 1.
(a) The outlet temperature in the four configurations of Fig. 7, and (b) The relation between the time of approach to equilibrium and the Péclet number of the fluid.
Three serpentine pipes in a fixed volume, and the effect of volume shape on the outlet temperature.
The average temperature of the solid domain in the four configurations of Fig. 7.
(a) The time evolution of the group ya for the θ avg (t *) histories based on Fig. 10, and (b) The time evolution of N tu for the θ avg (t *) histories based on Fig. 10.
(a) The solid sleeve of cooled solid that grows around the buried pipe, and designs for high density packing: (b) Packing in one layer, and (c) Packing in two layers.
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