Heat transfer in a long, thin tube section of an air compressor: An empirical correlation from CFD and a thermodynamic modeling

Chao Zhang, Mohsen Saadat, Perry Y. Li, Terrence W. Simon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations

Abstract

Heat transfer during compression of air in a long, thin tube is studied by CFD. The tube represents one of the many in a honeycomb geometry inserted in a liquid piston air compressor to minimize temperature rise. A dimensionless number for the heat flow rate that includes the changing heat transfer area between the tube wall and air during compression is used. From the CFD results, alinear relation between the inverse of this dimensionless heat flow rate and the Stanton number is found. Using thisrelation, the transient volume-Averaged temperature, and heat flow rate from the air can be well predicted by thermodynamic modeling.With the heat transfer model, a non-linear ODE is solved numerically todetermine the average temperature and pressure. The application of this study can be found in liquid piston air compressors for compressed air energy storage systems.

Original languageEnglish (US)
Title of host publicationASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012
Pages1601-1607
Number of pages7
EditionPARTS A, B, C, D
DOIs
StatePublished - 2012
EventASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012 - Houston, TX, United States
Duration: Nov 9 2012Nov 15 2012

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
NumberPARTS A, B, C, D
Volume7

Other

OtherASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012
CountryUnited States
CityHouston, TX
Period11/9/1211/15/12

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