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Table 3 Multi-loop pipe-pipe spacing for shunt analysis

From: Thermal resistance of borehole heat exchangers composed of multiple loops and custom shapes

N loops S p Configuration occurrences Configuration fraction (CF)
1 Z 1 1
2 Z 2 1/2
Z/√2 2 1/2
3 Z 3 1/3
0.866 Z 4 4/9
Z/2 2 2/9
4 Z 4 1/4
0.9239 Z 6 3/8
0.707 Z 4 1/4
0.3827 Z 2 1/8