An experimental and numerical investigation of flow patterns in the entrance of plate-fin heat exchanger

Integration of constructal distributors to a mini crossflow heat exchanger and their assembly configuration optimization

“…Various methods have been suggested in order to obtain a uniform inlet flow distribution. Some of these consists in adding "packings" that are random at small scales, but regular at the larger scales, such as a uniformly perforated grid (Lalot et al, 1999), a baffle (Wen and Li, 2004;Wen et al, 2006) or a second header (Jiao et al, 2003), resulting in a higher pressure drop and flow dispersion that are undesirable from the engineering point of view. Others include modifying the corrugation angles or geometrical dimension of the distributor (Lalot et al, 1999;Jiao and Baek, 2005;Bobbili et al, 2006) to improve the quality of flow distribution.…”

Numerical Investigation of the Inlet Baffle, Header Geometry, and Triangular Fins Effects on Plate-Fin Heat Exchangers Performance

“…The numerical and experimental results were consistent. Wen et al [6] numerically and experimentally investigated the effect of baffle on the improvement of flow distribution pattern and vortex reduction in plate heat exchangers. The experiments were done by particle image velocimetry.…”

“…According to the examined baffle which was done by Wen et al [6], and due to the dimension ratios of headers, three different types of holes are used. The holes are in three diameters of 2.3, 4 and Figure 2 depicts the employed baffle in the present study.…”

A new method for designing the heat exchangers constructed based on infinite regular polyhedrons geometry

“…A 3D mathematical model and its numerical approximation are applied to simulate the heat transfer augmentation in a circular tube with a helical turbulator in the form of a metallic wire by Makiharju et al CFD simulation is employed to investigate the turbulent flow structure inside the header of a plate fin heat exchanger by Wen et al and results of calculations are presented in Ref. [7]. Kasagi et al used a commercial CFD code to calculate the thermal and velocity field around in-line tube bundles with three rows in the transverse direction and 10 columns in the longitude direction.…”