Experimental Investigation on Characteristics of Mechanical Pumped Two-Phase Cooling System under Periodic Temperature Boundary Conditions

This paper analyzes the work principle,mathematical model and main parameters for the two-phase flow cooling system driven by mechanical pump.Temperature distribution,resistance and flow mass of main components in the active two-phase cooling system driven by mechanical pump are experimen-tally studied.Heat transfer of the system is calculated and analyzed.The study results indicate that:when the temperature wave of the condensation boundary approaches 30℃,the difference between inlet and outlet temperatures can be kept less than 0.3℃ and the temperature change with time is less than 0.4℃,along the 10 m evaporation section.Analysis indicates that the two-phase flow cooling system driven by mechanical pump is of well isothermal characteristics and stable heat transfer.Calculation and analysis also indicate that this system can realize larger heat transfer with smaller energy consumption,which improves the work capability of the active heat control system.