Heat transfer and friction correlation for compact louvered fin-and-tube heat exchangers

General heat transfer and friction correlations for louver fin geometry hav ing round tube configuration were proposed in the present study. A total of 49 samples of louvered fin-and-tube heat exchangers with different geometr ical parameters, including louver pitch, louver height, longitudinal tube p itch, transverse tube pitch, tube diameter, and fin pitch were used to deve lop the correlations. The proposed correlation describes 95.5% of the Cobur n j and 90.8% of the friction factors within +/-15%. (C) 1998 Elsevier Scie nce Ltd. All rights reserved.