Kinetic theory of thermal transpiration and mechanocaloric effect. V. Flow of polyatomic gases in a cylindrical tube with arbitrary accommodation at the surface

1984 ◽  
Vol 81 (5) ◽  
pp. 2439-2449 ◽  
Author(s):  
S. S. Lo ◽  
S. K. Loyalka ◽  
T. S. Storvick
Keyword(s):  
Kinetic Theory ◽  
Cylindrical Tube ◽  
Polyatomic Gases ◽  
Thermal Transpiration ◽  
Mechanocaloric Effect

Thermal Transpiration in a Cylindrical Tube

1969 ◽  
Vol 12 (11) ◽  
pp. 2301 ◽  
Author(s):  
S. K. Loyalka
Keyword(s):  
Cylindrical Tube ◽  
Thermal Transpiration

The Application of Thermal Transpiration to a Gaseous Pump

1970 ◽  
Vol 92 (2) ◽  
pp. 294-302 ◽  
Author(s):  
P. A. Orner ◽  
G. B. Lammers
Keyword(s):  
Kinetic Theory ◽  
Porous Membrane ◽  
Theory Model ◽  
Temperature Gradients ◽  
Laboratory Model ◽  
Large Temperature ◽  
Thermal Transpiration ◽  
Static Performance ◽  
Temperature Ranges ◽  
Fluidic Control

A direct thermal-to-pneumatic energy converter utilizing the principle of thermal transpiration through a porous membrane is described. The applicability of this no-moving-part pump to a fluidic control system is discussed. A laboratory model has been constructed and experimentally evaluated for several gases, membrane types, and temperature ranges. A theoretical model is derived from the binary diffusion equations of kinetic theory. A linearized version of this model is verified experimentally for small temperature gradients. The kinetic theory model is evaluated numerically to predict the static performance of a pump for large temperature gradients.

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