| Popis: |
The theoretical investigation was being conducted to look into possibility to provide passive control in capillary pumped loops (CPL) using the noncondensable gas technique. The principal condition to apply the gas-control technique for CPL is condenser of the wicked type. Corresponding designs of cylindrical porous condenser and evaporator as well are proposed. The developed mathematical model of entire system combines the hydrodynamic and heat transfer sections. This combination allows the tracking of position of interfaces in the both wicks. Various aspects are analyzed: priming, dry-out, start-up, conditions for vapor bubble formation and collapse. Also the hazard of gas penetration in liquid phase is discussed. Performed examination of the conception confirms possibility to develop a CPL with porous condenser and non-condensable gas reservoir for passive control of heat transport capability. |
