6533b825fe1ef96bd1282605
RESEARCH PRODUCT
Refrigeration bound of heat-producing cylinders by superfluid helium
Jou D.Sciacca M.Sellitto A.Galantucci L.subject
Condensed Matter::Quantum GasesPhysics::Fluid Dynamicsthermal conductivity liquid helium quantum turbulence micropores quantized vortices computer refrigeration.Mathematics; PhysicsRefrigerationExtended Thermodynamicssuperfluid heliumPhysics::Atomic and Molecular Clusterslcsh:Science (General)Settore MAT/07 - Fisica MatematicaMSC: 76A25 76F99 80A99.lcsh:Q1-390description
In this paper we go ahead in our studies on refrigeration of nanosystems by superfluid helium, as an appealing subject for future applications to computers or astronautical precision nanodevices. We first recall the effective thermal conductivity in laminar counterflow superfluid helium through arrays of mutually parallel cylinders and we discuss the conditions for the appearance of quantum turbulence around the heat-producing cylinders. We then consider the cooling of an array of heat-producing cylindrical nanosystems by means of superfluid-helium counterflow. We discuss the upper bound on heat removal set by avoidance of quantum turbulence and avoidance of phase transition to normal He I, for arrays of cylinders placed between two infinite insulating plates and with heat flowing in the two dimensions parallel to such plates.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-01-01 |