Theses and Dissertations
Improving Thermal-Hydraulic Performance of Flat-Tube Louver-Fin Heat Exchangers by Eliminating Louver Gap Condensate Bridges
Date of Award
Master of Science (MS)
Dr. Dumitru Caruntu
Dr. Young-Gil Park
Dr. Kye-Hwan Lee
The air side performance of heat exchangers is a well studied subject. Flat-tube louver-fin heat exchangers experience a decrease in performance when operating in dehumidifying conditions. As water vapor is pulled from the air, water condensate may create blockages between louvers. Flat-tube louver-fin heat exchanger may experience a drop in thermal-hydraulic performance by up to 50% due to blockages. The aim of this study is to make macro scale geometric changes to louver dimensions and eliminate louver condensate bridges. By eliminating louver condensate blockages, the heat exchanger should see an overall gain in thermal performance when compared to current fin and louver geometries. A 2D inter-louver condensate bridge model was used to determine geometries where condensate bridges cannot form. Heat exchangers were designed around those geometries and predictive correlations used to gauge thermal performance. Several selected designs compared favorably to experimental results of heat exchangers operated in fully wet conditions.
Jones, Alan L., "Improving Thermal-Hydraulic Performance of Flat-Tube Louver-Fin Heat Exchangers by Eliminating Louver Gap Condensate Bridges" (2018). Theses and Dissertations. 296.
Copyright 2018 Alan L. Jones. All Rights Reserved.