Affiliation:
1. Department of Mechanical Engineering, College of Engineering Tikrit University Tikrit Iraq
2. Hawija Technical Institute, Renewable Energy Research Unit Northern Technical University Mosul Iraq
Abstract
AbstractThe wide usage of heat exchangers in various industrial applications has attracted the attention of many researchers. An experimental and theoretical study was conducted to investigate the fluid flow across a longitudinal fin flat tube heat exchanger with laminar forced convection. The studied parameters were the dimensionless longitudinal pitch length (, dimensionless transfer pitch (3 ≤ ≤ 5), dimensionless downstream fin length (), dimensionless upstream fin length (), dimensionless downstream fin angle (), and Reynolds number (223 ≤ Re ≤ 1114). The studied air thermophysical properties were assumed constant. The study was conducted under constant surface temperature. The dimensionless pressure drop was reduced by 60.8% (at Re = 223 as increased from 3 to 5), 4.69% (at Re = 1114 as decreased from 5 to 4), 225% (at Re = 223 as decreased from 1 to 0.4), 6.9% (at Re = 1114 as decreased from 1 to 0.4), and 349.9% (at Re = 668 as decreased from 0.79 to 0.26). The difference between the experimental and numerical data was insignificant. Two correlations were developed based on the present experimental and numerical results.