Phase Change Water Processing for Space Station

1985 ◽  
Author(s):  
E. M. Zdankiewicz ◽  
D. F. Price
Keyword(s):  
Phase Change ◽  
Space Station

Phase Change Water Recovery for the Space Station Freedom and Future Exploration Missions

1990 ◽  
Author(s):  
Larry D. Noble ◽  
Franz H. Schubert ◽  
Rick J. Pudoka ◽  
Janie H. Miernik
Keyword(s):  
Phase Change ◽  
Space Station ◽  
Water Recovery ◽  
Space Station Freedom

scholarly journals Two-Dimensional Model of a Space Station Freedom Thermal Energy Storage Canister

1994 ◽  
Vol 116 (2) ◽  
pp. 114-121 ◽  
Author(s):  
T. W. Kerslake ◽  
M. B. Ibrahim
Keyword(s):  
Heat Transfer ◽  
Energy Storage ◽  
Free Convection ◽  
Phase Change ◽  
Thermal Energy ◽  
Heat Engine ◽  
Space Station ◽  
Working Fluid ◽  
Two Dimensional ◽  
Liquid Salt

The Solar Dynamic Power Module being developed for Space Station Freedom uses a eutectic mixture of LiF-CaF2 phase-change salt contained in toroidal canisters for thermal energy storage. This paper presents results from heat transfer analyses of the phase-change salt containment canister. A two-dimensional, axisymmetric finite difference computer program which models the canister walls, salt, void, and heat engine working fluid coolant was developed. Analyses included effects of conduction in canister walls and solid salt, conduction and free convection in liquid salt, conduction and radiation across salt vapor-filled void regions, and forced convection in the heat engine working fluid. Void shape and location were prescribed based on engineering judgment. The salt phase-change process was modeled using the enthalpy method. Discussion of results focuses on the role of free convection in the liquid salt on canister heat transfer performance. This role is shown to be important for interpreting the relationship between ground-based canister performance (in 1-g) and expected on-orbit performance (in micro-g). Attention is also focused on the influence of void heat transfer on canister wall temperature distributions. The large thermal resistance of void regions is shown to accentuate canister hot spots and temperature gradients.

Future Experiments to Measure Liquid-Gas Phase Change and Heat Transfer Phenomena on the International Space Station

2011 ◽  
Vol 24 (3) ◽  
pp. 189-194 ◽  
Author(s):  
Balázs Tóth ◽  
ESA’s Science Management, Payload Development and Operations teams ◽  
Science Teams ◽  
Space Industry
Keyword(s):  
Heat Transfer ◽  
Phase Change ◽  
Gas Phase ◽  
International Space Station ◽  
Space Station ◽  
International Space

scholarly journals Observational study: microgravity testing of a phase-change reference on the International Space Station

2015 ◽  
Vol 1 (1) ◽  
Author(s):  
T Shane Topham ◽  
Gail E Bingham ◽  
Harri Latvakoski ◽  
Igor Podolski ◽  
Vladimir S Sychev ◽  
...  
Keyword(s):  
Observational Study ◽  
Phase Change ◽  
International Space Station ◽  
Space Station ◽  
International Space

scholarly journals Analysis of Thermal Energy Storage Material With Change-of-Phase Volumetric Effects

1993 ◽  
Vol 115 (1) ◽  
pp. 22-31 ◽  
Author(s):  
Thomas W. Kerslake ◽  
Mounir B. Ibrahim
Keyword(s):  
Energy Storage ◽  
Phase Change ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Space Station ◽  
Two Dimensional ◽  
Transfer Resistance ◽  
One Dimensional ◽  
Thermal Energy Storage Material ◽  
The One

NASA’s Space Station Freedom proposed hybrid power system includes photovoltaic arrays with nickel hydrogen batteries for energy storage and solar dynamic collectors driving Brayton heat engines with change-of-phase thermal energy storage (TES) devices. A TES device is comprised of multiple metallic, annular canisters which contain a eutectic composition LiF-CaF2 phase change material (PCM) that melts at 1040 K. A moderately sophisticated LiF-CaF2 PCM computer model is being developed in two stages considering first one-dimensional and then two-dimensional canister geometries. One-dimensional model results indicate that the void has a marked effect on the phase change process due to PCM displacement and dynamic void heat transfer resistance. Equally influential are the effects of different boundary conditions and liquid PCM free convection. For the second stage, successful numerical techniques used in the one-dimensional phase change model are extended to a two-dimensional (r,z) PCM containment canister model. A prototypical PCM containment canister is analyzed and the results are discussed.

The effect of an aluminum heat-sink layer on the laser-induced amorphization of SiOx/TeGeSn/SiOx phase-change recording films

1989 ◽  
Vol 47 ◽  
pp. 574-575
Author(s):  
Matthew R. Libera ◽  
Martin Chen
Keyword(s):  
Thin Film ◽  
Phase Change ◽  
Heat Sink ◽  
Multilayer Film ◽  
Glassy Phase ◽  
Film Structure ◽  
Glass Forming ◽  
Active Storage ◽  
Dielectric Layers ◽  
Amorphous States

Phase-change erasable optical storage is based on the ability to switch a micron-sized region of a thin film between the crystalline and amorphous states using a diffraction-limited laser as a heat source. A bit of information can be represented as an amorphous spot on a crystalline background, and the two states can be optically identified by their different reflectivities. In a typical multilayer thin-film structure the active (storage) layer is sandwiched between one or more dielectric layers. The dielectric layers provide physical containment and act as a heat sink. A viable phase-change medium must be able to quench to the glassy phase after melting, and this requires proper tailoring of the thermal properties of the multilayer film. The present research studies one particular multilayer structure and shows the effect of an additional aluminum layer on the glass-forming ability.

Duet: A distributed usability lab supporting displays development for space station

1999 ◽  
Author(s):  
H. Charles Dischinger ◽  
Neal C. Tilghman ◽  
Matthew Hammons ◽  
Joseph P. Hale
Keyword(s):  
Space Station
Sign in / Sign up

Export Citation Format

Share Document