Analysis of a Mixing Chamber Developed for Use in a Gravity-Independent Dilution Refrigerator

Gunaranjan Chaudhry (1) , Gérard Vermeulen (1)

1 NEEL - HELFA - Hélium : du fondamental aux applications

We present thermodynamic models for a mixing chamber used in dilution refrigerators designed for gravity-independent operation. We develop models for calculating the cooling power of such a dilution refrigerator as a function of the load temperature. We compare our models with experimental results from the open-cycle Planck dilution refrigerator and the currently-under-development closed-cycle variant of the Planck refrigerator. In doing so, we resolve what was believed to be a discrepancy in the cooling power of the Planck system.

Mots clés: dilution refrigeration; space cryogenics

Domaines: Autre [cond-mat.other]

Gunaranjan Chaudhry, Gérard Vermeulen. Analysis of a Mixing Chamber Developed for Use in a Gravity-Independent Dilution Refrigerator. Journal of Low Temperature Physics, 2012, 169 (1-2), pp.90. ⟨10.1007/s10909-012-0638-z⟩. ⟨hal-00986989⟩