Structure design and thermal-hydraulic performances study on tube-on-sheet heat exchanger
2020
A numerical investigation is performed to study the thermal-hydraulic
performances of tube-on-sheet heat exchanger. Especially, this paper is
focused on the effects of the structure parameters (fin angles, fin lengths,
fin pitches, fin widths and tube arc radius) on the thermal-hydraulic
characteristics of the heat exchanger. The heat exchanger optimized
structural parameters are obtained. The results reveal that main structure
parameters on thermal-hydraulic performance are fin angle, fin length, fin
pitch and fin width. Furthermore, decreasing the fin angle, fin pitch and
fin width or increasing the fin length cause thermal hydraulic performance
to increase. In addition, main structure parameters on low temperature
corrosion are tube arc radius and fin length. Decreasing the tube arc radius
and fin length can mitigate low temperature corrosion. Furth, stainless
steel is choosing as the material for the heat exchanger to reduce
corrosion.
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