Research Article
Mathematical Analysis of Optimal Operating Conditions in Heating Systems
Table 2
Measuring parameter and its range.
| Number | Measuring parameter | Testing range |
| 1 | Supply water | 55–90°C |
| 2 | Temperature difference between supply and return water | 0 ~15°C |
| 3 | Velocity | 0.13–1.33 m/s |
| 4 | Flow rate | 0.60–1.50 t/h |
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