Performance of gaseous counter-flow micro heat exchangers

Document Type

Conference Proceeding

Date of Original Version



Heat exchangers performance of two-stream counter-flow gas-gas type micro-heat exchangers is investigated numerically. The flow passages of the micro-heat exchangers are parallelplate channels with heights in the range of 10 to 100 μm and selected lengths of 12.7 and 25.4 mm. The numerical methodology is based on the Arbitrary-Lagrangian-Eulerian method. The computations were performed to find the effects of capacity ratio, channel height and length on the heat exchange characteristics of micro heat exchangers. The results are presented in form of temperature contours, bulk temperatures, total temperatures and heat flux variation along the channel. Also, the correlation between the effectiveness and Ntu is discussed. Copyright © 2007 by ASME.

Publication Title, e.g., Journal

2007 Proceedings of the ASME/JSME Thermal Engineering Summer Heat Transfer Conference - HT 2007