Drawn-polymer recuperative heat exchangers for use in cryocoolers
Name
Adams_2022_IOP_Conf._Ser.__Mater._Sci._Eng._1240_012048.pdf
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Published version
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1.11 MB
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Adobe PDF
Checksum (MD5)
730edc85292830ebf80ecb7c1294e3e7
Author(s)
Adams, JL
Thompson, KJ
Cummings, J
Cantley, L
Brisson, JG
Date Issued
2022
Journal
IOP Conference Series: Materials Science and Engineering [1757899X]
Publisher
IOP Publishing
Citation
Adams, JL, Thompson, KJ, Cummings, J, Cantley, L and Brisson, JG. 2022. "Drawn-polymer recuperative heat exchangers for use in cryocoolers." IOP Conference Series: Materials Science and Engineering [1757899X], 1240 (1).
Version
Final published version
Abstract
Abstract
Polymer microchannel heat exchangers for use in cryocooler applications have been developed. These heat exchangers are manufactured using a thermal drawing process where a bulk polymer preform is heated and stretched. The process results in channels with a characteristic dimension of 50-100 µm and with an overall length of many meters. The drawn heat exchangers are lightweight, flexible, and have a large surface-area-to-volume ratio. Initial tests on a Joule-Thomson cryocooler with a heat exchanger of overall dimension of 2.5mm x 2.5mm x 420mm with nitrogen as a working fluid were performed. Nitrogen was successfully liquified with a mass flow rate of 34 mg/s and cooling power of 200 mW at 80 K.
Polymer microchannel heat exchangers for use in cryocooler applications have been developed. These heat exchangers are manufactured using a thermal drawing process where a bulk polymer preform is heated and stretched. The process results in channels with a characteristic dimension of 50-100 µm and with an overall length of many meters. The drawn heat exchangers are lightweight, flexible, and have a large surface-area-to-volume ratio. Initial tests on a Joule-Thomson cryocooler with a heat exchanger of overall dimension of 2.5mm x 2.5mm x 420mm with nitrogen as a working fluid were performed. Nitrogen was successfully liquified with a mass flow rate of 34 mg/s and cooling power of 200 mW at 80 K.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
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DOI of Published Version
https://doi.org/10.1088/1757-899X/1240/1/012048
