Fig. 3

The electric power applied to the heater inside the LHe vessel of S0 exhibits a linear dependence on the square root of the measured differential pressure across the Venturi-type flow meter at VB #2. The accumulated static heat load along the LHe supply line is thus derived from a linear fit for these five test cases, i.e. the absolute value of the extrapolating heater power with a zero differential pressure drop read from the Venturi-type flow meter