Thermal performance of one-pass shell-and-tube heat exchangers in counter-flow
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Thermal performance of one-pass shell-and-tube heat exchangers in counter-flowFecha
2019-02-24Cita bibliográfica
MAGAZONI, F.C., CABEZAS-GÓMEZ, L., ALVARIÑO, P.F. y SAIZ-JABARDO, J.M., 2019. THERMAL PERFORMANCE OF ONE-PASS SHELL-AND-TUBE HEAT EXCHANGERS IN COUNTER-FLOW. Brazilian Journal of Chemical Engineering [en línea], vol. 36, no. 2, pp. 869-883. ISSN 0104-6632. DOI 10.1590/0104-6632.20190362s20180424. Disponible en: https://doi.org/10.1590/0104-6632.20190362s20180424.
Resumen
[Abstract] A computational methodology is proposed and applied to calculate the temperature effectiveness, P, and the logarithmic mean temperature difference (LMTD) correction factor, F, of TEMA E shell-and-tube heat exchangers with one-pass and fluids flowing in counter-flow. An arbitrary number of baffles is considered along with three different mixture conditions of the shell-side fluid. The methodology is based on various modeling considerations adopted in several publications addressing crossflow and shell-and-tube heat exchangers. Each section between two baffles is idealized as a crossflow heat exchanger with different shell-side mixing conditions. The obtained results are compared to available solutions from the literature, showing a very good agreement. New closed-form mathematical P relations and approximate F correlations depending on the number of baffles, very appropriate for preliminary computerized analysis and design procedures, are provided. A theoretical study about the influence of the number of baffles and two shell-side fluid mixing hypotheses over P and F values is presented. The proposed methodology could be used to obtain P and F values for a particular arrangement of 1-1 shell-and-tube heat exchanger.
Palabras clave
1-1 TEMA E shell-and-tube heat exchangers
Temperature effectiveness
LMTD correction factor
Temperature effectiveness
LMTD correction factor
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Creative Commons License Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
ISSN
0104-6632