Heat Transfer and Pressure Drop Characteristics of Finned Tube Banks in Forced Convection (Comparison of Heat Transfer and Pressure Drop Characteristics of Serrated and Spiral Fins)

Structural optimization of flow and heat transfer characteristics of integral helical finned tubes based on genetic algorithm

“…The experimental correlation [5] was used to validate the numerical models, comparing the results of numerical calculations shown in Fig. 3.…”

“…It is meaningful to investigate the flow and heat transfer characteristics for the design and safe operation of finned tube heat exchangers. Many studies have been carried out on the flow and heat transfer characteristics of high-frequency welding spiral fin tube bundles [5] and H-shaped fin tube bundles [6][7][8] through experimental and numerical methods. However, Research on the integral spiral fin tube bundle is rarely reported.…”

“…He et al [9] studied the heat transfer and flow characteristics of the finned tube heat exchanger, and obtained the heat transfer Nusselt number relationship and the flow resistance Euler number relationship. Kawaguchi et al [5] compared the heat transfer pressure drop characteristics of serrated fins and spiral fins, and concluded that serrated fins can improve the heat transfer characteristic and the friction factor considerably compared with spiral fins, in the case of large fin pitch. Moreover, the multi-objective optimization genetic algorithm was applied to optimize the structural parameters of the heat exchanger.…”

Modelo Dinámico de un Recuperador de Gases -Sales Fundidas para una Planta Termosolar Híbrida de Energías Renovables

“…El coeficiente de transferencia de calor por convección forzada en régimen turbulento entre el gas y el banco de tubos se puede calcular con las correlaciones de Weierman (1976), Extended Surface Corporation of America (ESCOA) (Ganapathy, 2003), Nir (1991) o Kawaguchi et al (2005) que se ajustan a nuestro caso particular de banco de tubos. Entre el banco de tubos y las sales fundidas, también considerando convección forzada en régimen turbulento (régimen nominal de operación), el coeficiente de transferencia de calor puede ser calculado con las correlaciones de Gnielinski (1976), Petukhov (1970) o Dittus and Boelter (1930).…”

“…Entre el banco de tubos y las sales fundidas, también considerando convección forzada en régimen turbulento (régimen nominal de operación), el coeficiente de transferencia de calor puede ser calculado con las correlaciones de Gnielinski (1976), Petukhov (1970) o Dittus and Boelter (1930). La caída de presión del gas sobre el banco de tubos (Δp gas−tub ) en régimen turbulento puede ser calculada con cualquiera de las correlaciones publicadas en Weierman (1976); Ganapathy (2003); Nir (1991) o Kawaguchi et al (2005).…”