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Thermal Analysis of a Microfluidic Preconcentrator for Portable Micro Gas Analysis Systems

[+] Author Affiliations
Z. Jay Cao, Aaron J. Knobloch, Wei-Cheng Tian, Stacey J. Kennerly, Nannan Chen

GE Global Research, Niskayuna, NY

Mark A. Shannan, Rich Masel

University of Illinois, Urbana, IL

Paper No. IMECE2009-10342, pp. 187-192; 6 pages
  • ASME 2009 International Mechanical Engineering Congress and Exposition
  • Volume 12: Micro and Nano Systems, Parts A and B
  • Lake Buena Vista, Florida, USA, November 13–19, 2009
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4385-7 | eISBN: 978-0-7918-3863-1
  • Copyright © 2009 by ASME


Two key challenges to portable gas chromatography are reducing preconcentrator power consumption and accurate temperature control of adsorbent. This paper presents the results of thermal modeling performed to optimize a microfabricated preconcentrator based on a silicon microhotplate and utilizing Metal Organic Framework (MOF) adsorbents. From this modeling, two design changes are presented that reduce the power consumption by 1.5 W and reduce temperature variation across the microhotplate by 50%.

Copyright © 2009 by ASME



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