Simulation on heat-leakage of PCL with natural and water-cooling modes

Abstract

Heat-leakage of Peltier current lead (PCL) with natural and water-cooling modes at its room-temperature terminals was simulated by finite element method (FEM). A twodimensional model of PCL with conduction cooling was established to obtain optimized parameters for natural air cooling (NAC) and water cooling (WC) at room-temperature terminals. Simulated results show that the minimum heat leakage is available at low current if the room-temperature termination is cooled by NAC and the minimum heat leakage easily obtains at high current if it is cooled by water.

Experimental study on temperature and heat-leakage of Peltier current leads

“…With proper dimensional heat sinks, the optimal current can be higher, and maybe it is enough for PCLs designed for low operation current. In addition, a good switch strategy of the two modes may receive an energysaving power supply in that NAC mode is more energyefficient at low current [4].…”

“…Except for PEs (p-type Bi 2 Te 3 ), oxygen free copper is employed for the rest parts of current leads. The dimension of PCL designed for operation at 120 A with water cooling (WC) mode is listed in Table I [4]. The temperature boundary condition is defined as follow: T L = 77 K at the lower side of leads with the upper side air cooled by natural convection.…”

“…The simulation model for PCL with NAC mode had been completed, and results were submitted in this conference in other manuscript [4].…”