Fabbri G. Heat transfer optimization in internally finned tubes un- der laminar flow conditions [ J ]. International Journal of Heat and Mass Transfer, 1998,41 : 1243 - 1253.Fabbri, G, Heat transfer optimization
A heat transfer tube with a finned inner surface is divided into at least two zones (Zto Z) in a peripheral direction. The fins extend at an angle of inclination 伪 with respect to the longitudinal axis of the tube, are arranged in the individual zones (Zto Z) in any desired periodic ...
In addition, it is found that the emergence of closed-loop isotherms between the areas of two neighboring fins leads to heat transfer enhancement in the internally finned tube. When the fin number is smaller than 14, there appears a maximum Nusselt number at about 0.8 of the dimensionless fin...
A numerical investigation of laminar mixed convection developing flow and heat transfer with variable viscosity in internally finned tubes with helical fins and constant wall temperature boundary condition was performed. The numerical model was validated by comparison with experimental data and was able to...
Wang Q w,Lin M,Zeng M.Effect of Blocked Core- Tube Diameter on Heat Transfer Performance of Inter- nally Longitudinal Finned Tubes.Heat Transfer Engi- neeriag. 2008Wang QW, Lin M, Zeng M (2008) Effect of blocked core-tube diameter on heat transfer performance of internally longitudinal ...
univform wall tepmerature,and the third boundary condition with finite wall thermal conductivity considered.The numerical results show that boundary conditions have pronounced effects on the temperature field.Furthermore,a new mechanism on the heat transfer augmentation of internally finned tubes is ...
finned square duct A meshless procedure for analysis of fluid flow and heat transfer in an internally finned square ductA meshless procedure for analysis of fluid flow and heat transfer in an internally finned square ductApplication of the method of fundamental solutions in combination with the ...
The heat transfer enhancement in the latent heat thermal energy storage system by using an internally finned tube is presented in this paper. The phase change material fills the annular shell space around the tube, while the transfer fluid flows within the internally finned tube. The melting of ...
Three-dimensional turbulent flow and heat transfer in an internally finned tube with a blocked core-tube have been numerically studied by the realizable k turbulence model with the wall-function method. The numerical method is validated by comparing the calculated results with experimental data. The ...
The enhancement of heat transfer can be achieved by increasing the thermal contact [32] area and by creating turbulence [33]. Twisted or perforated tapes, wire coils, inserts/baffle plates, grooves, or internally finned tubes have been proposed to increase turbulence [34]. However, this leads ...