Mathematics – Logic
Scientific paper
Jan 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aipc..654..629b&link_type=abstract
SPACE TECHNOLOGY AND APPLICATIONS INT.FORUM-STAIF 2003: Conf.on Thermophysics in Microgravity; Commercial/Civil Next Generation
Mathematics
Logic
Industrial And Technological Research And Development, Spaceborne And Space Research Instruments, Apparatus, And Components
Scientific paper
The major goal of space reactor power system designers is to increase the specific power (kWe/kg) of the overall reactor power system. During the early days of the U.S. space power program, Rankine cycle power conversion technology was vigorously pursued as an approach for achieving extremely favorable specific powers - particularly for system power levels on the order of 100 kWe and larger. As a result, liquid-metal Rankine cycle power conversion technology is relatively mature (compared to other dynamic power conversion technologies), with in-space flight demonstration being the principal remaining impediment to its near-term application. The unique technology issue associated with a space-based Rankine system is the control and management of two-phase liquids. While many aspects of two-phase management have been demonstrated for short periods of time in zero-gravity with water and organic working fluids, the demonstration of liquid-metal two-phase systems in space remains the fundamental obstacle to its use. ORNL was recently awarded a contract with NASA to design a small-scale flight demonstration program to demonstrate Rankine cycle two-phase fluid management in space. An initial goal of this work is to demonstrate two-phase interface control by means of an early program space flight demonstration with a simplified system employing surrogate materials (such as Plexiglas and Freon).
Bevard Bruce B.
Yoder Graydon L.
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