Experimental Validation of a Closed Brayton Cycle System Transient Simulation

Computer Science – Performance

Scientific paper

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Heat Engines, Heat Pumps, Heat Pipes, Computer Modeling And Simulation, Performance Characteristics Of Energy Conversion Systems, Figure Of Merit, Spaceborne And Space Research Instruments, Apparatus, And Components

Scientific paper

The Brayton Power Conversion Unit (BPCU) located at NASA Glenn Research Center (GRC) in Cleveland, OH was used to validate the results of a computational code known as Closed Cycle System Simulation (CCSS). Conversion system thermal transient behavior was the focus of this validation. The BPCU was operated at various steady state points and then subjected to transient changes involving shaft rotational speed and thermal energy input. These conditions were then duplicated in CCSS. Validation of the CCSS BPCU model provides confidence in developing future Brayton power system performance predictions, and helps to guide high power Brayton technology development.

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