Sodium-heated evaporator critical heat flux experiments at subcritical pressure conditions for commercial LMFBR plant application

An experimental program was performed to investigate critical heat flux at subcritical pressure conditions in a single duplex tube sodium heated steam generator mode. The experimental ranges were: pressure: 8.274 to 12.41 MPa (1200 to 1800 psia); mass flux: 2.01*10$sup 6$ to 7.82*10$sup 6$ kg/hr-m$sup 2$ (0.43 to 1.65*10$sup 6$ lb/hr-ft$sup 2$); and heat flux: 0.48 to 0.85 MW/m$sup 2$(0.152 to 0.27*10$sup 6$ Btu/hr-ft$sup 2$). The present test data was correlated and compared with that of other investigations in terms of critical steam quality, heat flux, tube diameter, pressure, and water/steam mass flux. The resulting correlation agrees well with other sodium-heated and electrically heated test results in the range of pressure: 6.9 to 15.4 MPa (1000 to 2670 psia) and mass flux: 2.01*10$sup 6$ to 7.82*10$sup 6$ kg/hr-m$sup 2$ (0.43 to 1.65*10$sup 6$ lb/hr-ft$sup 2$). 17 refs