Science – Society – Technology
Table 2 Summary of the experimental conditions and results
From: Experimental study on convective heat transfer of an open-loop borehole heat exchanger
Diameter (mm) | Flow mode | Flow rate (m3/h) | Re | Outlet temperature θo |
|---|---|---|---|---|
17 | Forward | 0.3 | 2092 | 0.13 |
17 | Forward | 0.4 | 2789 | 0.05 |
17 | Forward | 0.45 | 3138 | 0.02 |
20 | Forward | 0.3 | 1975 | 0.07 |
20 | Forward | 0.4 | 2633 | 0.09 |
20 | Forward | 0.45 | 2962 | 0.13 |
23 | Forward | 0.3 | 1870 | 0.13 |
23 | Forward | 0.4 | 2493 | 0.24 |
23 | Forward | 0.45 | 2805 | 0.28 |
17 | Backward | 0.4 | 2789 | 0.52 |
20 | Backward | 0.4 | 2633 | 0.53 |
23 | Backward | 0.4 | 2493 | 0.59 |