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NIST Authors in Bold
|Author(s):||David A. Yashar; Piotr A. Domanski; Hong H. Cho;|
|Title:||Characterization of Approach Air Distribution for a Finned-Tube Heat Exchanger|
|Published:||February 18, 2011|
|Abstract:||The distribution of air flow approaching a finned-tube heat exchanger is one of the predominant factors influencing the heat exchanger‰s performance. This paper describes a method for measuring and predicting the inlet air flow distribution using Particle Image Velocimetry (PIV) and a Computational Fluid Dynamics (CFD) model, respectively. The studied case was a single-slab, four-depth-row, louvered-fin heat exchanger installed vertically in a horizontal duct. A CFD model of the air flow through this heat exchanger was developed based on a momentum resistance modeling approach. The CFD results agreed well with the PIV measurements, predicting the local velocities within 3 % over most of the domain and within 10 % in areas with the largest velocity gradients.|
|Pages:||pp. 76 - 85|
|Research Areas:||High Performance Buildings|