Measurement Uncertainty Estimation for Laser Doppler Anemometer

Karolina Weremijewicz and Andrzej Gajewski
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Karolina Weremijewicz: Students’ Scientific Society “Heat Engineer”, Faculty of Civil Engineering and Environmental Sciences, Bialystok University of Technology, Wiejska Street 45 A, 15-351 Białystok, Poland
Andrzej Gajewski: Department of HVAC Engineering, Faculty of Civil Engineering and Environmental Sciences, Bialystok University of Technology, Wiejska Street 45 A, 15-351 Białystok, Poland

Energies, 2021, vol. 14, issue 13, 1-11

Abstract: Twenty percent of global electricity supplied to the buildings is used for preventing air temperature increase; its consumption for this prevention will triple by 2050 up to China’s present needs. Heat removed from the thermal power plants may drive cold generation in the absorption devices where mass and heat transfer are two-phase phenomena; hence liquid film break-up into the rivulets is extensively investigated, which needs knowledge of the velocity profiles. Laminar flow in a pipe is used in the preliminary study, velocity profile of developed flow is used as a benchmark. The study account writes the applied apparatus with their calibration procedure, and the uncertainty estimation algorithm. The calibration regression line with the slope close to one and a high Pearson’s coefficient value is the final outcome. Therefore, the apparatus may be applied in the principal research.

Keywords: liquid film break down; rivulet; velocity profile; laminar flow; surface tension (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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