Technical noteEstimation of fin efficiencies of regular tubes arrayed in circumferential fins
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Cited by (19)
A thermal calculation model for tubular condensing heat exchanger
2024, Applied Thermal EngineeringA novel one-dimensional model to predict fin efficiency of continuous fin-tube heat exchangers
2019, Applied Thermal EngineeringCitation Excerpt :To briefly describe these models, it is first recall that the tube bundle is arranged either in an in-line or staggered layouts with different transversal and longitudinal pitches, XT and XL, as sketched in Fig. 1a and Fig. 1b, where the shaded areas are the unit cells of the continuous fin to evaluate the heat transfer rate. The single equivalent radial fin model (1D-SERF) is one of the most widely employed approximations [31,14]. In the 1D-SERF model the unit cell is replaced by an annular circular sector of the same area and internal diameter equal to the tube diameter.
Thermal design of an orthotropic flat fin in fin-and-tube heat exchangers operating in dry and wet environments
2011, International Journal of Heat and Mass TransferCitation Excerpt :A method to improve the performance of fin-and-tube heat exchangers when ice forms on the surface of the fin, has been proposed [12]. Various fin geometries have been investigated under dry surface conditions, including flat fins in a hexagonal arrangement [13]; square fins around circular tubes [14] with an adiabatic boundary condition at the edge of the fin and an isothermal boundary at the base of the fin; and fins arranged in a variety of geometric arrays [15]. The performance of cylindrical fin-and-tube heat exchangers has been investigated experimentally [16] and theoretically [17].
Numerical study of the fin efficiency and a modified fin efficiency formula for flat tube bank fin heat exchanger
2011, International Journal of Heat and Mass TransferCitation Excerpt :Lin and Jang [16] carried out a two-dimensional analysis regarding the efficiency of an elliptic fin using averaged heat transfer coefficients. Many other investigators [17–20] also have applied a uniform heat transfer coefficient for the fin efficiency calculation in their studies. Several papers have focused on the fin efficiency obtained by the local heat transfer coefficients due to the difficulty of getting a local heat transfer coefficient for a fin.
Performance and optimum dimensions of flat fins for tube-and-fin heat exchangers: A generalized analysis
2009, International Journal of Heat and Fluid FlowNumerical study of local heat transfer coefficient and fin efficiency of wavy fin-and-tube heat exchangers<sup>{star, open}</sup>{star, open}The present work is supported by the National Science Fund for Distinguished Young Scholars from the National Natural Science Foundation of China (No. 50425620), and the Key Grant Project of Chinese Ministry of Education (No. 306014).
2007, International Journal of Thermal Sciences