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High Heat Flux, Gravity-Independent, Two-Phase Heat Exchangers for Spacecraft Thermal Management
Technical Paper
2002-01-3196
ISSN: 0148-7191, e-ISSN: 2688-3627
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Event:
Power Systems Conference
Language:
English
Abstract
A significant advantage of utilizing forced convection boiling heat transfer for spacecraft thermal management applications is that high heat fluxes are yielded that allow heat exchange equipment to be substantially compacted and reduced in mass. To date, two-phase heat transfer has not been utilized aboard spacecraft due to the uncertainty of the influence of gravity on the fluid dynamics and heat transfer within the heat exchange equipment. A subcooled flow boiling regime has recently been identified in which the bubble dynamics and two-phase flow controlling the heat transfer are independent of the gravitational field. The parametric bounds of this regime have been explored using a numerical simulation of the bubble dynamics in subcooled forced convection boiling. A gravity-independent/dependent regime map has been constructed, which depends on the Jacob number, Reynolds number, Weber number, and a liquid/vapor density ratio. A subcooled forced convection boiling heat exchanger has been fabricated that will operate in the gravity-independent and dependent regimes. It is currently being tested under terrestrial conditions in order to validate the gravity-independent/dependent regime map.
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Citation
Bower, J., Klausner, J., and Sathyanarayan, S., "High Heat Flux, Gravity-Independent, Two-Phase Heat Exchangers for Spacecraft Thermal Management," SAE Technical Paper 2002-01-3196, 2002, https://doi.org/10.4271/2002-01-3196.Also In
References
- Best F.R. Hoang D.S. 1990 “Microgravity Two-Phase Pressure Drop Experiments in the NASA KC-135,” Proceedings of the Seventh Symposium on Space Nuclear Power Systems , 557 561
- Bousman W.S. Dukler A.E. 1993 “Studies of Gas-Liquid Flow in Microgravity: Void Fraction, Pressure Drop and Flow Patterns,” Fluid Mechanics Phenomena in Microgravity 175 23 36
- Chen l. Downing R. S. 1988 “A Reduced Gravity Flight Experiment: Observed Flow Regimes and Pressure Drops of Vapor and Liquid Flow in Adiabatic Pipes,” AlChE Symposium Series 84
- Colin C. Fabre J. Dukler A.E. 1991 “Gas-Liquid Flow at Microgravity Conditions -I. Dispersed Bubble and Slug Flow,” Int. J. Multiphase Flow 17 4 553 544
- Dukler A.E. Fabre J.A. McQuillen J.B. Vernon R. 1988 “Gas-Liquid Flow at Microgravity Conditions: Flow Patterns and Their Transitions,” Int. J. Multiphase Flow , 14 4 389 400
- Feldmanis C.J. 1963 “Performance of Boiling and Condensing Equipment Under Simulated Outer Space Conditions,” ASD-TDR-63-862 .
- Heppner D.B. King C.D. Littles J.W. 1975 “Zero-G Experiments in Two-Phase Fluids Flow Regimes” ASME Paper 75-ENAS-24 .
- Heppner D.B. King CD. Littles J.W. 1975 “Zero-G Experiments in Two-Phase Fluids Flow Regimes” ASME Paper75-ENAS-24 .
- Hill W.S. Best F.R. 1991 “Microgravity Two-Phase Flow Experiment and Test Results,” 21st Conference on Environmental Systems SAE Technical Paper Series 911556
- Hinze J.O. 1975 “Turbulence” 2nd McGraw-Hill
- Klausner J.F. Mei R. Bernhard D.M. Zeng L.Z. 1993 “Vapor Bubble Departure in Forced Convection Boiling.” Int. J. Heat Mass Transfer 36 651 662
- Martinelli R.C. Nelson D.B. 1948 “Prediction of Pressure Drop during Forced-Circulation of Boiling Water,” Transactions ASME 70 695 702
- Miller K.M. Ungar E.K. Dzenitis J.M. Wheeler M. 1993 “Microgravity Two-Phase Pressure Drop Data in Smooth Tubing,” Fluid Mechanics Phenomena in Microgravity 175 37 50
- Reinarts T.R. Miller K.M. Best F.R. 1993 “Two-Phase Flow Regimes in Smooth Tubing in Mirogravity, Lunar Gravity, Martian Gravity, and Earth-Normal Gravity,” Proceedings of the ASME Winter Annual Meeting New Orleans
- Thorncroft G.E. Klausner J.F. Mei R. 2001 “Bubble Forces and Detachment Models,” Multiphase Science and Technology 13 3 4 1 42
- Zeng L.Z. Klausner J.F. Mei R. 1993 “A Unified Model for the Prediction of Bubble Detachment Diameters in Boiling Systems - I. Flow boiling.” Int. J. Heat Mass Transfer 36 9 2271 2279
- Zuber N. Findlay J.A. 1965 “Average Volumetric Concentration in Two-Phase Flow Systems,” Journal of Heat Transfer 87 453 468
- Zuber N. 1961 “The Dynamics of Vapor Bubbles in Nonuniform Temperature Fields,” Int. J. Heat Mass Transfer 2 83 98