This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Porous Media Based Phase Separation in Condensing Heat Exchanger for Space Systems
Technical Paper
2006-01-2275
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
One of the key elements of a recently proposed composite porous media condensing heat exchanger for space systems is to utilize capillary pressure for collecting and removing water from the condensing unit. This eliminates the need for rotary devices for phase separation under microgravity environments. The selective phase separation aspect of the design was investigated under controlled saturation of the porous substrate in terrestrial environment without the occurrence of condensation. Experiments were conducted with a composite porous system comprised of porous graphite block and porous ceramic tubes. It was demonstrated that the liquid phase could be preferentially separated from the unsaturated porous graphite block as proposed. This paper discusses the results of the selective phase extraction investigation. A flow model was also presented for predicting the phase separation by the composite porous system.
Authors
Citation
Khan, L. and Hasan, M., "Porous Media Based Phase Separation in Condensing Heat Exchanger for Space Systems," SAE Technical Paper 2006-01-2275, 2006, https://doi.org/10.4271/2006-01-2275.Also In
References
- Hasan, M. M. Khan, L. Nayagam V. Balasubramunium, R. 2005 ‘Conceptual Design of a Condensing Heat Exchanger for Space Systems using Porous Media’ ICES -2005- 01-2812
- Hasan M. M. Nayagam V. Balasubramaniam R. Bunnell Ct. Althausen D. M. “A Porous Media-Based Heat Exchanger: Experimental Measurements of Moisture Condensation” Paper Offer #: 06ICES-170 July 17–20 2006 Norfolk
- Khan L. I. 2004 “Design & Development of Composite Porous Media Condenser Heat Exchanger for Humidity Control in Microgravity” NASA-GRC Cleveland, Ohio
- Hollenbeck, K. J. Jensen, K. H. 1998 Experimental evidence of randomness and nonuniqueness in unsaturated outflow experiments designed for hydraulic parameter estimation Water Resour. Res. 34 (4) 595 602
- van Dam, J. C. Stricker, J. N. M. Droogers, P. Inverse method to determine soil hydraulic functions from multi-step outflow experiments Soil Sci. Soc. Am. J. 58 647 652 1994
- Wildenschild, D. Hopmans, J. W. Simunek, J. Flow rate dependence of soil hydraulic characteristics Soil Sci. Soc. Am. J. 65 35 48 2001
- Martys, N.S. Diffusion in partially saturated porous material Materials & Structures 32 555 562 Oct. 1999
- van Genuchten, M.Th. 1980 ‘A closed-form equation for predicting the hydraulic conductivity of unsaturated soils’ Soil Sci. Soc. Am. J 44 892 898
- Mualem, Y. 1976 ‘A new model for predicting the hydraulic conductivity of unsaturated porous media’ Water Resour. Res 12 513 522
- Wieland, P. 1994 “Designing For Human Presence in Space: An Introduction to Environmental Control and Life Support Systems” NASA RP-1324, NASA-MSFC