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Plate Fin Heat Exchanger Model with Axial Conduction and Variable Properties
- Source :
- AIP Conf.Proc. 1434 (2011) 615-622
- Publication Year :
- 2012
-
Abstract
- Future superconducting radio frequency (SRF) cavities, as part of Project X at Fermilab, will be cooled to superfluid helium temperatures by a cryogenic distribution system supplying cold supercritical helium. To reduce vapor fraction during the final Joule-Thomson (J-T) expansion into the superfluid helium cooling bath, counter-flow, plate-fin heat exchangers will be utilized. Due to their compact size and ease of fabrication, plate-fin heat exchangers are an effective option. However, the design of compact and high-effectiveness cryogenic heat exchangers operating at liquid helium temperatures requires consideration of axial heat conduction along the direction of flow, in addition to variable fluid properties. Here we present a numerical model that includes the effects of axial conduction and variable properties for a plate fin heat exchanger. The model is used to guide design decisions on heat exchanger material choice and geometry. In addition, the J-T expansion process is modeled with the heat exchanger to analyze the effect of heat load and cryogenic supply parameters.<br />Comment: 8 pp. Cryogenic Engineering Conference and International Cryogenic Materials Conference CEC-ICMC, 13-17 June 2011, Spokane, Washington
- Subjects :
- Physics - Accelerator Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- AIP Conf.Proc. 1434 (2011) 615-622
- Publication Type :
- Report
- Accession number :
- edsarx.1209.1338
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1063/1.4706971