Fig. 1. Schematic diagram of experimental device

Fig. 2. Structure diagram of steam generator simulator

Fig. 3. Distribution diagram of temperature measuring points in C-type heat exchanger

Fig. 4. RELAP5 calculation model of the experimental device

Fig. 5. Comparison of system parameters with inclination angle of +15° (color online)(a) Pressure, (b) Inlet and outlet temperature of heat exchanger

Fig. 6. Change of key system parameters with inclination angle (a) System pressure, (b) Natural circulation flow, (c) Inlet temperature of heat exchanger, (d) Outlet temperature of heat exchanger

Fig. 7. Boiling phenomenon outside tube of C-type heat exchanger under different inclination angles of -24° (a), -15° (b), 15° (c), 24° (d)

Fig. 8. Change of heat transfer coefficient outside (a) and inner distribution of gas phase fraction (b) of C-type heat exchanger at different inclination angles