Table 3 Individual uncertainty of the independently measured quantities.
Symbol | Quantity | Measurement method | Uncertainty |
|---|---|---|---|
D | Diameter of the target area | Rulers | 1.6 × 10−3 m |
ρ | Density of test section | NIST website | 1% |
cp | Specific heat capacity of the test section | NIST website | 5% |
ΔT | Temperature difference between the initial and the end of the test | T-type thermocouple | 1.5% |
τ | Thickness of test section | Calipers | 3 × 105 m |
hfg | Latent heat of nitrogen | NIST website | 5% |
\(\dot m_l\) | Mass flow rate of liquid nitrogen | Coriolis flow meter | 0.3% |
