Temperature Control Scenario on the Accumulator of a Mechanical Pumped Two-Phase Loop

The temperature control principle on the accumulator of a mechanical pumped two-phase loop has been presented in this paper,and two scenarios have been discussed:one is PI control based on the voltage,and the other is PI control base on the power.Approximate equivalent conversion between the two scenarios has been realized,and simulation has been conducted by using SINDA/FLUINT.The results show that,both the two scenarios have almost the same performance when the set-point is rising;but the accumulator can be much faster to reach the set-point with PI control based on the power when the set-point is decreasing,because it has cooling effect from the peltier. Besides,the skips in the dead-band for the PI control based on the power are less than those of the PI control based on the voltage.PI control based on the power should be the priority scenario to choose.