TY - JOUR
T1 - Development of a switchless sorption compressor for the cryogenic refrigeration within the METIS instrument
T2 - Part II. Experimental demonstration
AU - Wu, Y.
AU - Vermeer, C. H.
AU - Holland, H. J.
AU - Benthem, B.
AU - ter Brake, H. J.M.
PY - 2017/10/1
Y1 - 2017/10/1
N2 - Due to its vibration-free feature, sorption-based refrigeration technology has been proposed for the cryogenic cooling of the Mid-infrared E-ELT Imager and Spectrograph (METIS) instrument in the European Extremely Large Telescope. Sorption compressor is the most critical component in the METIS sorption refrigerator. A switchless sorption compressor has been designed for replacing the conventional gas-gap heat switch design. In this paper, the METIS switchless sorption compressor is validated in an experimental setup with a down-scaled version. The detailed design of the sorption compressor is introduced and the experimental setup is described. Then, the experimental procedures and results are discussed, including single-cell operation, multi-cell operation, and verification of the effects of the aluminum-foil inserts, the cycle time and the heat-sink temperature on the compressor performance. Finally, the experimental result showed good agreement with the simulations, and the deviation from the simulation to the measurement is caused by the model input inaccuracy.
AB - Due to its vibration-free feature, sorption-based refrigeration technology has been proposed for the cryogenic cooling of the Mid-infrared E-ELT Imager and Spectrograph (METIS) instrument in the European Extremely Large Telescope. Sorption compressor is the most critical component in the METIS sorption refrigerator. A switchless sorption compressor has been designed for replacing the conventional gas-gap heat switch design. In this paper, the METIS switchless sorption compressor is validated in an experimental setup with a down-scaled version. The detailed design of the sorption compressor is introduced and the experimental setup is described. Then, the experimental procedures and results are discussed, including single-cell operation, multi-cell operation, and verification of the effects of the aluminum-foil inserts, the cycle time and the heat-sink temperature on the compressor performance. Finally, the experimental result showed good agreement with the simulations, and the deviation from the simulation to the measurement is caused by the model input inaccuracy.
KW - Cryogenic refrigeration
KW - Cryogenics
KW - E-ELT
KW - Heat switch
KW - METIS
KW - Sorption compressor
KW - 22/4 OA procedure
UR - http://www.scopus.com/inward/record.url?scp=85027173050&partnerID=8YFLogxK
U2 - 10.1016/j.ijrefrig.2017.06.023
DO - 10.1016/j.ijrefrig.2017.06.023
M3 - Article
AN - SCOPUS:85027173050
VL - 82
SP - 529
EP - 540
JO - International journal of refrigeration
JF - International journal of refrigeration
SN - 0140-7007
ER -