Zero Boil-Off Tank Experiment (ZBOT)

• ZBOT addresses some of the limitations of previous experimental efforts including definition of initial and boundary conditions, long-term experiments that permit comparisons with thermodynamic models, and point-wise and field measurements of temperatures and fluid velocities for numerical validation.

• ZBOT investigates the role of transport and phase change phenomena on stratification, pressurization, and pressure control of a volatile fluid, Perfluoro-normal-Pentane (P-n-P).

• Comprehensive ground based and microgravity tests are conducted to study the effects of heat flux, fill level, and mixing on thermal stratification, pressurization and pressure control. • Development of a state-of-the-art two phase CFD model for the storage tank to aid future scale-up tank pressure control designs.

• Development of a multi-zonal thermodynamic model for the storage tank for quick and efficient engineering analysis.

• Validation and Verification of the models by the acquired ground based and microgravity data.

• Both the experimental data and modeling efforts are used as benchmarks for designing tanks for the long-term storage of cryogenic liquids.

Microgravity Science Glovebox

Zero Boil-Off Tank Experiment (ZBOT)

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