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Micro-/Milli-Fluidic Heat-Exchanger Characterization by Non-Invasive Temperature Sensors

[+] Author Affiliations
Lukas Hohmann, Safa Kutup Kurt, Naser Pouya Far, Daniel Vieth, Norbert Kockmann

TU Dortmund University, Dortmund, Germany

Paper No. ICNMM2016-8008, pp. V001T12A002; 10 pages
  • ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels collocated with the ASME 2016 Heat Transfer Summer Conference and the ASME 2016 Fluids Engineering Division Summer Meeting
  • ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels
  • Washington, DC, USA, July 10–14, 2016
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-5034-3
  • Copyright © 2016 by ASME


A micro-structured tubular reactor and a milli-structured tubular cooling crystallizer were equipped with thermocouples to observe the axial temperature profiles along the tubes. In order to avoid interactions of the temperature sensors with the fluid inside the channel, the sensors were fixed on the outside of the tube wall. By attaching polymeric foam insulation on the temperature sensors, the influences of surrounding heating/cooling agents on the measurement were dampened. The remaining error on the measurement was characterized experimentally. Simplified 1D simulation models were subsequently used to estimate the overall heat transfer coefficients in the devices. The influences on the remaining error in the temperature measurement on the estimated heat transfer coefficient was discussed.

Copyright © 2016 by ASME



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