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Heat Exchanger Design
ABB Ricerca
Normally, experimental evaluation of a finned
tube heat exchanger design is difficult and expensive. In this presentation
at the Italian UGM, however, ABB Ricerca showed how CFD can produce a
reliable, validated numerical model of a heat exchanger system in a short
time, and at substantial savings.
The 3D heat exchanger model was developed by isolating
the fifth and sixth tube rows (at which point fully developed flow conditions
are attained). The approach allows the problem to be solved using a periodic,
conjugate heat transfer analysis. The FLUENT/UNS modeling provided ABB
Ricerca with both visualization and detailed evaluation of the fluid dynamic
and heat transfer mechanisms in the heat exchanger. Validation of the
CFD results against existing correlations and experimental data confirmed
the reliability of these conclusions.
ABB Ricerca examined the periodic flow and heat transfer
in this finned tube heat exchanger. Validation against available correlations and data confirmed the modeling accuracy.
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