TY - JOUR
T1 - Development of a switchless sorption compressor for the cryogenic refrigeration within the METIS instrument
T2 - Part I. Theoretical design
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 - Vibration-free cryogenic sorption refrigerator was proposed for the Mid-infrared E-ELT Imager and Spectrograph (METIS) instrument in the European Extremely Large Telescope. Sorption compressor is the most important part in the refrigerator due to its dominate size, cost and complexity. Generally, gas-gap heat switches are applied for efficiency consideration which is particularly essential for space applications. In METIS refrigerator as a terrestrial application, low input powers, however, should not be the major concern, whereas complexity and costs become more important as high refrigeration powers and thus large numbers of sorption cells are required. To reduce these, we developed an alternative switchless sorption-compressor design. This paper presents the theoretical design of the switchless METIS sorption compressors, including the comparison between the designs with and without heat switches. Based on the switchless design, critical parameters for the METIS sorption compressors are determined to enable further development such as mechanical design, fabrication and experimental demonstration.
AB - Vibration-free cryogenic sorption refrigerator was proposed for the Mid-infrared E-ELT Imager and Spectrograph (METIS) instrument in the European Extremely Large Telescope. Sorption compressor is the most important part in the refrigerator due to its dominate size, cost and complexity. Generally, gas-gap heat switches are applied for efficiency consideration which is particularly essential for space applications. In METIS refrigerator as a terrestrial application, low input powers, however, should not be the major concern, whereas complexity and costs become more important as high refrigeration powers and thus large numbers of sorption cells are required. To reduce these, we developed an alternative switchless sorption-compressor design. This paper presents the theoretical design of the switchless METIS sorption compressors, including the comparison between the designs with and without heat switches. Based on the switchless design, critical parameters for the METIS sorption compressors are determined to enable further development such as mechanical design, fabrication and experimental demonstration.
KW - Cryogenic refrigerator
KW - Cryogenics
KW - E-ELT
KW - Heat switch
KW - Sorption compressor
KW - 22/4 OA procedure
UR - http://www.scopus.com/inward/record.url?scp=85027191255&partnerID=8YFLogxK
U2 - 10.1016/j.ijrefrig.2017.06.029
DO - 10.1016/j.ijrefrig.2017.06.029
M3 - Article
AN - SCOPUS:85027191255
SN - 0140-7007
VL - 82
SP - 520
EP - 528
JO - International journal of refrigeration
JF - International journal of refrigeration
ER -