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Zone of Influence of Porous Suction Tubes in Condensing Heat Exchanger for Space Systems
Technical Paper
2008-01-2075
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A “next generation” condensing heat exchanger for space systems has to satisfy demanding operational requirements under variable thermal and moisture loads and reduced gravity conditions. Mathematical models described here are used to investigate transient behavior of wetting and de-wetting dynamics in the binary porous system of porous tubes and porous cold plate. The model is based on the Richard's equation simplified for the zero-gravity conditions. The half-saturation distance or the zone of influence of the porous annular suction tubes on the cold-plate porous material will be in the range of 1 to 10 cm for the time scales ranging from 100 to 10,000 seconds and moisture diffusivity in the range of D = 10-4 to 10-6 m2/s. Spin-echo MRI experiments on horizontal thin-section porous Aquafoam™ samples demonstrated powerful ability of magnetic resonance to measure moisture transport, wetting fronts, and saturation distribution in simulated near zero-gravity conditions for opaque porous media.
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Citation
Daidzic, N., "Zone of Influence of Porous Suction Tubes in Condensing Heat Exchanger for Space Systems," SAE Technical Paper 2008-01-2075, 2008, https://doi.org/10.4271/2008-01-2075.Also In
References
- Althausen, D. Quinn, F. Bunnell, C. Daidzic, N.E. 2006 Porous Media Condensing Heat Exchanger with Integral Gas Liquid Separation for Space Flight Use 44 th AIAA Aerospace Sciences Meeting and Exhibit January 9-12 2006 Reno (Nevada), U.S.A.
- Ames, W.F. Numerical Methods for Partial Differential Equations 3rd Academic Press, Inc. Boston 1992
- Bear, J. 1988 Dynamics of Fluids in Porous Media American Elsevier Pub. Co. New York 1988
- Bruce B.B. Klute, A. 1956 Solutions and Tests on the Diffusion Equation for the movement of water in Soil Soil Sci. Soc. Amer. Proc. 20 4 458 462
- Carslaw, H.S. Jaeger, J.C. Conduction of Heat in Solids 2nd Clarendon Press Oxford 1959
- Corey, A. T. 1994 Mechanics of Immiscible Fluids in Porous Media Water Resources Publications Highlands Ranch 1994
- Daidzic, N. E. Davis, C. Kadambi J. 2005 Non-Darcean Inertial Effects in Flow Through Consolidated Porous Media ISTP-16, 16 th International Symposium on Transport Phenomena August 29 September 1 2005 Prague, Czech Republic
- Daidzic, N.E. Schmidt, E. Altobelli, S. 2005 Gas-Liquid phase distribution and void fraction measurements using MRI Nucl. Eng. and Design 235 1163 1178
- Daidzic, N.E. Altobelli S. 2005 Estimation of length-scales in soils by MRI Journal of Magnetic Resonance Imaging 23 2 405
- Daidzic, N.E. Sankaran S. Althausen D. 2007 A Conceptual Design of Porous Tubes Condensing Heat Exchanger for Space Systems AIAA SPACE 2007 Conference and Exhibition 18-20 September 2007 Long Beach Convention Center, Long Beach, California, USA
- Daidzic, N.E. Davis C. Kadambi J. 2007 Hydraulic Properties of Porous Media for Space Systems AIAA SPACE 2007 Conference and Exhibition 18-20 September 2007 Long Beach Convention Center Long Beach, California, USA
- Dullien, F.A.L. 2000 Capillary and Viscous Effects in Porous Media Handbook of Porous Media Vafai K. 2000 Marcel Dekker, Inc. Waterloo 53 111
- Dullien, F.A.L. 1992 Porous Media Academic Press San Diego 1992
- Farlow, S.J. Partial Differential Equations for Scientists and Engineers Dover Publications, Inc. New York 1993
- Gardner, W.R. Mayhugh, M.S. 1958 Solutions and Tests on the Diffusion Equation for the movement of water in Soil Soil Sci. Soc. Amer. Proc. 22 197 201
- Petter, F. Planert, C. 1990 Condensing Heat Exchanger as Main Components in LSS for Manned Spaceflight 20 th ICES conference Williamsburg, VA July 9-12 1990 SAE paper 901284
- Philip J.R. 1957 The Theory of Infiltration: 1. The Infiltration Equation and its Solution Soil Science 83 345 357
- Richards, L.A. 1931 Capillary Conduction of Liquids through Porous Mediums Physics 1 318 333
- Roman, M.C. Steel, J.W. Marsh R.W. Callahan D.M. Von Jouanne R.G. 1999 Assessment of the Microbial Control Measurements for the Temperature and Humidity Control Subsystem Condensing Heat exchanger of the International Space Station th SAE paper 1999-01-2109
- Scull, T. Devin, M. Bedard, T. 1998 International Space Station Temperature and Humidity Control Subassembly - Hardware, Control and performance Description th July 13-16 SAE paper 981618 1998
- Stevik, T.K. Aa, K. Ausland, G. Hanssen, J.F. 2004 Retention and Removal of Pathogenic baceteria in wastewater percolating through porous media ; a review Water Research 38 1355 1367
- Tikhonov, A.N. Samarskii, A.A. Equations of Mathematical Physics Dover Publications, Inc. New York 1990
- Ungar, E.K. Oulette, F.A. 1992 Design of a Shuttle Air and Water Prefilter for Reduced Gravity Operation nd Seattle. Washington July 13-16 1992 SAE paper 921161
- Washburn E.W. 1921 The Dynamics of Capillary Flow Phys. Rev. XVII 3 273 283
- Westheimer, D. Daidzic, N.E. 2003 Advanced Temperature and Humidity Control System Advanced Life Support (ALS), Technology Development Project (TDP) NASA Johnson Space Center August 2003