Table 2 Instruments and uncertainty of experimental parameters.
Property/parameter | Instrument | Uncertainty approach | % Uncertainty |
|---|---|---|---|
Thermal conductivity | Decagon KD2 Pro | Standard uncertainty | 2.4 |
Viscosity | MCR 302 | Standard uncertainty | 4.1 |
Density | DA645 | Standard uncertainty | 0.1 |
Specific heat | TA instruments Q2000 | Standard uncertainty | 1.8 |
Temperature (bulk) | Thermocouple, K-type | Least count | 0.16 |
Temperature (wall) | Thermocouple, K-type | Least count | 0.18 |
Voltage | Voltmeter | Least count | 0.004 |
Current | Ammeter | Least count | 0.34 |
Flow rate | Imf vortex flow meter SV4200 | Least count | 1.64 |
Pressure drop | Keyence pressure sensor GP-100 | Least count | 4.12 |
Reynolds number | Derived | Error propagation | 4.41 |
Heat flux | Derived | Error propagation | 0.34 |
Nusselt | Derived | Error propagation | 2.42 |
Heat transfer coefficients | Derived | Error propagation | 0.34 |
Friction factor | Derived | Error propagation | 4.43 |
