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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 |