Modelling and Optimization Methods for a Microchannel Heat Exchanger

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  • Microchannel heat exchangers are being considered for use in the Generation IV nuclear reactors for their ability to provide increased thermal efficiency in a small volume relative to other types of heat exchangers via an extremely high surface area-to-volume ratio. Three distinct analysis methods that may be used to evaluate the technology are presented in this work. The finite element method model yields results that agree with those produced using the effectiveness-number of transfer units method. More complex free surface flows are effectively and accurately modelled using smoothed particle hydrodynamics. An initial optimization of a microchannel heat exchanger is performed using the effectiveness-number of transfer units method once more, determining an optimal design with an objective function value of 0.081 that is obtained using 3.29 m long channel, 0.023 m channel width, a 0.0001 m wall thickness between channels, and hot and cold inlet flow velocity of 3.91 m/s.

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  • Copyright © 2015 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner.
Date Created
  • 2015


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