A Constrained Vapor Bubble (CVB) formed in a fused silica cell of square cross section was studied. This small-scale device is capable of transferring high heat flux using the latent heat of vaporization of liquid. Capillarity is the driving force to recirculate the working fluid. Experiments were conducted at different operating conditions to obtain the temperature profiles of the cell. The effect of low-level impurities was analyzed from a thermodynamic point of view. A two-dimensional model was developed to describe the temperature distribution in the evaporator of the CVB. An area averaged heat transfer coefficient was used to account for the complicated heat transfer mode on the inside wall of the cell. The results demonstrated that small amounts of a second component drastically affects the temperature distribution and heat transfer characteristics of the evaporation process due to distillation.
Experimental study and modeling of the effect of low-level impurities on the operation of the constrained vapor bubble
Space technology and applications international forum - 1998 ; 1998 ; Albuquerque,New Mexico (USA)
AIP Conference Proceedings ; 420 , 1 ; 446-451
15.01.1998
6 pages
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
British Library Conference Proceedings | 1998
|British Library Conference Proceedings | 1997
|A study of the Constrained Vapor Bubble Heat Exchanger
AIAA | 2001
|Modeling transport processes in a Constrained Vapor Bubble under microgravity conditions
American Institute of Physics | 2000
|Modeling Transport Processes in a Constrained Vapor Bubble Under Microgravity Conditions
British Library Conference Proceedings | 2000
|