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Table 1 Summary of the uncertainty analysis on (a) measured parameters and (b) calculated compressor performance parameters

From: Experimental evaluation of heat transfer effect on turbocompressor performance operating with helium-neon gas mixtures

(a)

Parameter

Uncertainty FS

Calibrated Range

\(P_{\mathrm{in}}\)

± 0.03 - 0.05 %

0.8 - 1.2 bar

\(P_{s,\mathrm{out}}\)

± 0.02 - 0.04 %

0.8 - 1.6 bar

\(T_{\mathrm{in}}\)

± 0.06 - 0.08 %

30 - 90°C

\(T_{s,\mathrm{out}}\)

± 0.03 - 0.05 %

30 - 90°C

\(x_{\mathrm{gas}}\)

± 0.04 %

0 - 1

Ω

± 11 RPM

0 - 120 kRPM

Q̇

± 0.23 %

0.4 - 15 m3/min

(b)

Parameter

Uncertainty

Ï€

± 6.9e−4 [-]

η

± 1.5e−2 [-]

\(M_{U2}\)

± 1.0e−4 [-]

\(\dot{m}_{\mathrm{red}}\)

± 7.9e−4 [-]

λ

± 2.5e−3 [-]

\(\phi _{t1}\)

± 1.4e−3 [-]

\(\psi _{p}\)

± 1.1e−2 [-]