Sentence examples for errors of pressure from inspiring English sources
The paper explores the main parameters affecting the accuracy and errors of pressure data induced by laboratory set-up and system calibration.
The relative errors of pressure gradients between calculated and experimental results are generally higher than 300%, but these can be reduced to less than 10% while the oil flow friction item of the model is multiplied by a modified coefficient β of 0.1907.
It was found that the both errors in magnitude of the main fluid velocities and heat transfer coefficients between results of simulation and that of experiment or correlations are less than 10%, and the errors of pressure drop between simulation and correlation are no more than 20%.
The average error of pressure drop prediction for these four models are 32, 23.2, 12.1, and 42.7% in sequence.
Due to the proposed digital temperature compensation method, temperature output error of pressure sensors was significantly reduced (typically from 0.15% FSO/°C to 0.05% FSO/°C, based on calibration of 29482 manifold absolute pressure sensors).
By using the 360 sets of pressure data of the experiment on heavy oil gas lift to evaluate the Duns and Ros, Beggs and Brill, Ansari, and no-slip model, we observed that the error of pressure drop prediction for the Ansari model is the lowest at 12.1%.
The impact of the selection of threshold values as well as the dependence of numerical errors on pressure and equivalent ratio are also examined.
The overall average relative errors of total pressure and H2S partial pressure are 3.30 and 3.07 %, respectively.
The overall mean relative errors of total pressure and H2S partial pressure between the calculated and experimental data of the four systems are 3.30 and 3.07 %, respectively.
The overall average relative errors of total pressure and H2S partial pressure between the calculated and experimental results of the above four absorption systems are 3.30 and 3.07 %, respectively.
The average relative errors of total pressure and H2S partial pressure between the calculated values and the experimental data for the system of aqueous H2S-NG- MEA-MDEA-PZ -water are 3.47 and 3.08 %, respectively.
