Innovative flow-resistance performance in the single-phase natural circulation loop and relevant experiment verification

In consideration of the effects of the local resistance and the frictional resistance in the natural circulation loop, the analytical relation between the natural circulation mass flow rate G and the heating power Q can be express as G∼Qm,m=f(Re,Rn), where the Rn is the ratio of the local pressure loss coefficient and the friction coefficient. The relation of flow-resistance to the natural circulation mass flow rate can be expressed as Δpf∼Gr,r=f(t,m). These correlations is tested with experimental data from the experimental facility of HRTL-200 II and showed reasonable agreement.