Table 2 Experimental accuracy and uncertainty of measured parameters.
From: Enhancement of thermofluid characteristics via a triple-helical tube heat exchanger
Device/parameter | Range | Accuracy (%) | Uncertainty (%) |
|---|---|---|---|
Flow rotameters, kg/s | 0.016–0.3 | ± 0.5 | 3.3 |
K-type Thermocouples, oC | − 200 to 1200 | ± 0.1 | 0.12 |
Differential pressure digital transmitter, kPa | 0.5–500 | ± 0.5 | ± 0.59 |
Reynolds number | 2700–31,000 | – | ± 3.36 |
fh | – | – | ± 3.41 |
Nuh | – | – | ± 5.22 |
\(\varepsilon\) | – | – | ± 3.51 |
Q./PP | – | – | ± 3.54 |
