![]() ![]() Three main circulators and three auxiliary circulators are to be used in the demonstration plant. The report describes the preliminary design of a main helium circulator for the 300 MW(e) GCFR demonstration plant. The results of radial surveys of flow angle, total temperature, and total pressure are presented at the stator inlet and the rotor exit. Interstage duct performance and exit diffuser performance are presented in terms of wall static pressures. Stator performance is presented in terms of mass flow rate and stator exit torque, which was measured with a stationary paddlewheel rotor. The results are presented for stator throat areas of 79.3, 100.0, 117.7, and 135.6 more ยป percent of design in terms of mass flow rate, torque, speed, power, and efficiency. At these conditions a Reynolds number equal to that at actual engine conditions was obtaind at the equivalent design values of speed and pressure ratio. The stage performance evaluation was performed with dry air at nominal stator inlet conditions of 320/sup 0/K and 0.409 atmosphere. ![]() The power turbine is a single-stage, axial-flow design with pivotable vanes to vary stator area for engine control and braking. Experimentally determined performance data are presented for the power turbine stage of the Department of Energy upgraded automotive gas turbine engine. ![]()
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