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Figure 10.
Hydraulic loss coefficient (x) for the tested air grills
| Diffuser | Forward flow | Reverse flow |
|---|---|---|
| 9 | 9 | |
| 19 | 616 | |
| 270 | 260 |
Characteristics of measuring devices used in the experiments
| Device | Type | Measurement range | accuracy |
|---|---|---|---|
| Thermoanemometer | AirDistSys 5000 | 0.05 to 5 m/s | ±0.02 m/s ±1% of readings |
| Difference micromanometer | CMR-10 | 0 to 1500 Pa | ±0.1Pa |