00/02366 Fischer—Tropsch thermophysical property data: a needs assessment for process design

2000 ◽  
Vol 41 (5) ◽  
pp. 269
1998 ◽  
Vol 551 ◽  
Author(s):  
H.-J. Fecht ◽  
R.K. Wunderlich

AbstractThe analysis of nucleation and growth processes relies mostly on circular arguments since basic thermophysical properties necessary, such as the Gibbs free energy (enthalpy of crystallization, specific heat), the density, emissivity, thermal conductivity (diffusivity), diffusion coefficients, surface tension, viscosity, interfacial crystal / liquid tension, etc. are generally unknown with sufficient precision and therefore often deduced from insufficient linear interpolations from the elements. The paucity of thermophysical property data for commercial materials as well as research materials is mostly a result of the experimental difficulties arising from the unwanted convection and reactions of melts with containers at high temperatures. An overview will be given on the results of thermophysical property measurements during several different space flights using containerless processing methods. Furthermore, a perspective on a future measurement program of thermophysical properties supported by the European Space Agency is described. In this regard, the International Space Station is considered as the ideal laboratory for high precision measurements of thermophysical properties of fluids which help to improve manufacturing processes for a number of key industries.


2020 ◽  
Vol 8 (12) ◽  
pp. 2000683
Author(s):  
Evan Pretti ◽  
John Ludy ◽  
Carlos Pico ◽  
Jonas Baltrusaitis

2013 ◽  
Vol 58 (10) ◽  
pp. 2699-2716 ◽  
Author(s):  
Robert D. Chirico ◽  
Michael Frenkel ◽  
Joseph W. Magee ◽  
Vladimir Diky ◽  
Chris D. Muzny ◽  
...  

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