Experimental Investigation of New Flat-Plate-Type Capillary Pumped Loop

摘要: A capillary pumped loop is a two-phase heat transfer device which has been increasingly applied in thermal control of satellite or spacecraft and electronic cooling. However, startup performance normal poor hydrodynamic oscillation the system appears sometime during its operation. flat-plate-type constructed tested present study, combines advantages pipe by improving both components. In loop, evaporator condenser are designed as type flat plate with porous wick, reservoir used to adjust operation temperature system. addition, subcooler adopted improve quality working fluid flowing back evaporator. plane cross channel for liquid supply was made reduce probability dry-out point caused strong evaporation case high flux, therefore enhance stability Also, wick designed, three ports vapor-pipe inlet, liquid-pipe outlet, an adjusting connected reservoir. The benefits greatly from this three-port design, can be easily pressed into due resistance reduction. prototype startup, persistence operations, different vacuum. Startup experiments under loads conditions were conducted. Excellent performance, being stable easy, shown plane-type system, validates new configuration. Pressure fluctuation reduced largely owing induction condenser. During experimental processes lasting more than 10 h, shows outstanding behavior no phenomena observed. testing results indicate that 1) excellent without pressure priming clearing vapor line; 2) very severe operational conditions, such low load, sudden power step, etc.