Design and Development of a Two-Phase Reservoir for the Capillary Pumped Loop (CAPL) Flight Experiment

1992 ◽  
Author(s):  
David A. Wolf
Keyword(s):  
Design And Development ◽  
Capillary Pumped Loop ◽  
Two Phase ◽  
Flight Experiment

A breadboard flight experiment for two-phase flow visualization in microgravity

1995 ◽  
Author(s):  
Steve Benner ◽  
Gerard Durback ◽  
Kimberly Kolos ◽  
Robert Bayt
Keyword(s):  
Flow Visualization ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase ◽  
Flight Experiment

Numerical Investigation of the Steady State Operation of a Cylindrical Capillary Pumped Loop Evaporator

2000 ◽  
Author(s):  
Y. H. Yan ◽  
J. M. Ochterbeck
Keyword(s):  
Thermal Conductivity ◽  
Heat Flux ◽  
Steady State ◽  
Effective Thermal Conductivity ◽  
Liquid Core ◽  
Phase Region ◽  
Capillary Pumped Loop ◽  
Two Phase ◽  
Cylindrical Capillary ◽  
Wick Structure

Abstract A two-dimensional numerical model was established to study the behavior of a cylindrical capillary pumped loop evaporator under steady-state operations. The influence of heat load, liquid subcooling and effective thermal conductivity of the wick structure on the evaporator performance were studied. It was found that increasing the applied heat flux and degree of liquid subcooling resulted in a decrease the temperature in the liquid core. This helped to prevent the vapor from generating in the liquid core and decreased the length of the two phase region in the wick structure. Decreasing the effective thermal conductivity also decreases the temperature in the liquid core as related to the back wick condition. It was observed that for a given liquid subcooling, a minimum heat flux exists below which vapor will generate in the liquid core and render the evaporator non-operational. It was also observed that for a given heat flux, a minimum required liquid subcooling exists. Vapor may form in the liquid core when the liquid subcooling is less than the minimum value.

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