The Dual Fluid Reactor
The 19th Pacific Basin Nuclear Conference (PBNC 2014) Hyatt Regency Hotel, Vancouver, British Columbia, Canada, August 24-28, 2014 PBNC2014-292 THE DUAL FLUID REACTOR - A NEW CONCEPT FOR A HIGHLY EFFECTIVE FAST REACTOR Armin Huke1,Gotz¨ Ruprecht1, Daniel Weißbach1;2, Stephan Gottlieb1, Ahmed Hussein1;3, Konrad Czerski1;2 1Institut fur¨ Festkorper-Kernphysik¨ gGmbH, Leistikowstr. 2, 14050 Berlin, Germany 2Instytut Fizyki, Wydział Matematyczno-Fizyczny, Uniwersytet Szczecinski,´ ul. Wielkopolska 15, 70-451, Szczecin, Poland 3Department of Physics, University of Northern British Columbia, 3333 University Way, Prince George, BC, Canada. V6P 3S6 Abstract The Dual Fluid Reactor, DFR, is a novel concept of a fast heterogeneous nuclear reactor. Its key feature is the employment of two separate liquid cycles, one for fuel and one for the coolant. As op- posed to other liquid-fuel concepts like the molten-salt fast reactor (MSFR), in the DFR both cycles can be separately optimized for their respective purpose, leading to advantageous consequences: A very high power density resulting in enormous cost savings, and a highly negative temperature feedback coefficient, enabling a self-regulation without any control rods or mechanical parts in the core. The fuel liquid, an undiluted actinide trichloride (consisting of isotope-purified 37Cl) in the ref- erence design, circulates at an operating temperature of 1300 K and can be processed on-line in a small internal processing unit utilizing fractionated distillation or electro refining. Medical radioisotopes like Mo-99/Tc-99m are by-products and can be provided right away. In a more ad- vanced design, an actinide metal alloy melt with an appropriately low solidus temperature is well possible which further compactifies the core and allows to further increase the operating tempera- ture due to its high heat conductivity.
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