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Taborek, J, xlv-lvi
F and θ charts for shell-and-tube exchangers
Extended Surfaces and Fin Efficiency
Introduction
Objectives and Background
Taitel and Dukler flow regime map, for horizontal and inclined gas- liquid flows,
Tamura et al correlation, for surface tension of mixtures,
Taylor Forge method, for mechanical design of flanges, comparison with EN13445 method,
Taylor series expansion,
Teflon, use in heat transfer enhancement:
TEMA (Tubular Exchanger Manufacturers Association):
Temperature distribution:
Tenders for heat exchangers,
Terminal free fall velocity, in fluidization,
Testing and inspection of heat exchangers:
Tetrabromomethane:
1,1,2,2-Tetrachloroethane:
Tetrachloroethylene:
Tetradecane:
Tetradecene:
Tetrachlorodifluoroethane (Refrigerant 112):
1,1,1,2-Tetrafluoroethane (Refrigerant R134a):
Tetrafluoromethane (Refrigerant 14):
Tetrahydrofuran:
1,2,3,4-Tetramethylbenzene:
1,2,3,5-Tetramethylbenzene:
1,2,4,5-Tetramethylbenzene:
Thermal conductivity:
Thermal contact conductance (TCC),
Thermal contact resistance (TCR),
Thermal design, constructional features affecting, in shell-and-tube heat exchangers
Thermal diffusivity:
Thermal expansion coefficient:
Thermal leakage in F-type shell-and-tube heat exchangers,
Thermal mixing in plate heat exchangers,
Thermal stress:
Thermocal, heat transfer media,
Thermodynamic cycles in refrigeration,
Thermodynamic properties:
Thermodynamic surface in radiative heat transfer,
Thermoexel surface, for enhancement of boiling,
Thermofluids, heat transfer medium,
Thermosiphon
Theta-NTU method:
Thickness of boundary layers (displacement, momentum, energy, density, temperature),
Thin-wall-type expansion bellows,
Thiophene:
Thome, J R
Three-phase flows:
Tie rods in shell-and-tube heat exchangers,
Tinker method for shell-side heat transfer in shell-and-tube heat exchangers,
Titanium and titanium alloys,
T-junctions, loss coefficients in,
Tolerances
Toluene:
m-Toluidine:
Tong F-factor method, for critical heat flux with nonuniform heating,
Tooth, A S,
Total emissivity in gases,
Transcendental equations in transient conduction,
Transient behavior:
Transition boiling:
Transition flow, heat transfer in free convective flow over vertical surfaces in,
Transitional flow, in combined free and forced convection,
Transmission of thermal radiation in solids:
Transmissivity of solids:
Transport properties:
Transverse flow, combined free and forced convection in,
Treated surfaces, for augmentation of heat transfer,
Triangular duct:
Triangular fins, in plate fin exchangers,
Triangular relationship, in annular gas-liquid flow,
Tribromomethane:
1,1,1-Trichloroethane (Refrigerant 140a):
Trichloroethylene:
Trichlorofluoromethane (Refrigerant 11)
Trichloromethane (Chloroform) (Refrigerant 20):
1,1,2-Trichlorotrifluoroethane (Refrigerant 113):
Tridecane:
Tridecene:
Triethylamine:
1,1,1-Trifluoroethane (Refrigerant 143a):
Trifluoromethane (Refrigerant 23):
Trimethylamine:
1,2,3-Trimethylbenzene:
1,2,4-Trimethylbenzene:
1,3,5-Trimethylbenzene:
2,2,4-Trimethylpentane (Isooctane):
Triphenylmethane:
Triple interface (gas/solid/liquid),
True temperature difference, in double pipe exchangers,
Truelove, J S,
Tsotsas, E
Tube-baffle damage, in heat exchangers,
Tube banks, finned:
Tube banks, plain:
Tube banks, roughened tubes, effect of roughness on Euler number in,
Tube bundles:
Tube counts, in shell-and-tube heat exchangers:
Tube end attachment, in shell-and-tube heat exchangers,
Tube inserts, heat exchangers with,
Tube-in-plate extended surface configurations, fin efficiency of,
Tube plates, in shell-and-tube heat exchangers:
Tube rupture in shell-and-tube heat exchangers,
Tube-to-tubesheet attachment, in shell-and-tube heat exchangers,
Tubes:
Tucker, R J,
Tunnel dryer,
Turbine exhaust condensers:
Turbines, lost work in
Turbulence:
Turbulent boundary layers:
Turbulent buffeting, as source of tube vibration,
Turbulent energy, integral equation for,
Turbulent flow:
Turnarounds, in heat exchangers,
Turner, C W,
Twisted tapes:
Twisted tube heat exchangers,
Twisted tubes
Two-equation models, for turbulent boundary layers,
Two-phase loop with capillary pump,
Two-phase flows:
Index
HEDH
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
Taborek, J, xlv-lvi
U
V
W
X
Y
Z
F and θ charts for shell-and-tube exchangers
Extended Surfaces and Fin Efficiency
Introduction
Objectives and Background
Taitel and Dukler flow regime map, for horizontal and inclined gas- liquid flows,
Tamura et al correlation, for surface tension of mixtures,
Taylor Forge method, for mechanical design of flanges, comparison with EN13445 method,
Taylor series expansion,
Teflon, use in heat transfer enhancement:
TEMA (Tubular Exchanger Manufacturers Association):
Temperature distribution:
Tenders for heat exchangers,
Terminal free fall velocity, in fluidization,
Testing and inspection of heat exchangers:
Tetrabromomethane:
1,1,2,2-Tetrachloroethane:
Tetrachloroethylene:
Tetradecane:
Tetradecene:
Tetrachlorodifluoroethane (Refrigerant 112):
1,1,1,2-Tetrafluoroethane (Refrigerant R134a):
Tetrafluoromethane (Refrigerant 14):
Tetrahydrofuran:
1,2,3,4-Tetramethylbenzene:
1,2,3,5-Tetramethylbenzene:
1,2,4,5-Tetramethylbenzene:
Thermal conductivity:
Thermal contact conductance (TCC),
Thermal contact resistance (TCR),
Thermal design, constructional features affecting, in shell-and-tube heat exchangers
Thermal diffusivity:
Thermal expansion coefficient:
Thermal leakage in F-type shell-and-tube heat exchangers,
Thermal mixing in plate heat exchangers,
Thermal stress:
Thermocal, heat transfer media,
Thermodynamic cycles in refrigeration,
Thermodynamic properties:
Thermodynamic surface in radiative heat transfer,
Thermoexel surface, for enhancement of boiling,
Thermofluids, heat transfer medium,
Thermosiphon
Theta-NTU method:
Thickness of boundary layers (displacement, momentum, energy, density, temperature),
Thin-wall-type expansion bellows,
Thiophene:
Thome, J R
Three-phase flows:
Tie rods in shell-and-tube heat exchangers,
Tinker method for shell-side heat transfer in shell-and-tube heat exchangers,
Titanium and titanium alloys,
T-junctions, loss coefficients in,
Tolerances
Toluene:
m-Toluidine:
Tong F-factor method, for critical heat flux with nonuniform heating,
Tooth, A S,
Total emissivity in gases,
Transcendental equations in transient conduction,
Transient behavior:
Transition boiling:
Transition flow, heat transfer in free convective flow over vertical surfaces in,
Transitional flow, in combined free and forced convection,
Transmission of thermal radiation in solids:
Transmissivity of solids:
Transport properties:
Transverse flow, combined free and forced convection in,
Treated surfaces, for augmentation of heat transfer,
Triangular duct:
Triangular fins, in plate fin exchangers,
Triangular relationship, in annular gas-liquid flow,
Tribromomethane:
1,1,1-Trichloroethane (Refrigerant 140a):
Trichloroethylene:
Trichlorofluoromethane (Refrigerant 11)
Trichloromethane (Chloroform) (Refrigerant 20):
1,1,2-Trichlorotrifluoroethane (Refrigerant 113):
Tridecane:
Tridecene:
Triethylamine:
1,1,1-Trifluoroethane (Refrigerant 143a):
Trifluoromethane (Refrigerant 23):
Trimethylamine:
1,2,3-Trimethylbenzene:
1,2,4-Trimethylbenzene:
1,3,5-Trimethylbenzene:
2,2,4-Trimethylpentane (Isooctane):
Triphenylmethane:
Triple interface (gas/solid/liquid),
True temperature difference, in double pipe exchangers,
Truelove, J S,
Tsotsas, E
Tube-baffle damage, in heat exchangers,
Tube banks, finned:
Tube banks, plain:
Tube banks, roughened tubes, effect of roughness on Euler number in,
Tube bundles:
Tube counts, in shell-and-tube heat exchangers:
Tube end attachment, in shell-and-tube heat exchangers,
Tube inserts, heat exchangers with,
Tube-in-plate extended surface configurations, fin efficiency of,
Tube plates, in shell-and-tube heat exchangers:
Tube rupture in shell-and-tube heat exchangers,
Tube-to-tubesheet attachment, in shell-and-tube heat exchangers,
Tubes:
Tucker, R J,
Tunnel dryer,
Turbine exhaust condensers:
Turbines, lost work in
Turbulence:
Turbulent boundary layers:
Turbulent buffeting, as source of tube vibration,
Turbulent energy, integral equation for,
Turbulent flow:
Turnarounds, in heat exchangers,
Turner, C W,
Twisted tapes:
Twisted tube heat exchangers,
Twisted tubes
Two-equation models, for turbulent boundary layers,
Two-phase loop with capillary pump,
Two-phase flows:
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Extended Surfaces and Fin Efficiency
DOI 10.1615/hedhme.a.000167
2.4.9 Extended Surfaces and Fin Efficiency
Jerry Taborek
A. Introduction
Extended (fumed) surfaces are used widely in heat transfer applications. Heat transfer in such systems is by conduction from the base surface along the fin with subsequent convective heat transfer from the fin into the surrounding fluid. If the material of the fin has a very high thermal conductivity, then its surface will be at nearly uniform temperature and the heat release from the finned surface will be governed only by the heat transport phenomena between the surface and the surrounding fluid (i.e. the convective heat transfer). However, for practical systems, the conduction in the fins is of significance and the fins will be less efficient in transferring heat than would those with very high conductivity. Here we will define a fin efficiency which is the ratio of the heat-transfer rate from a given fin system to that which would occur if the fin had infinite thermal conductivity.
In this present Section, the question of fin efficiency is dealt with on the assumption that the coefficient of heat transfer from the finned surface is known. Methods for the estimation of such coefficients are given in the relevant convective heat transfer sections (for instance Section 170 for heat transfer from finned tube banks in single phase flow).
In what follows, Section B describes the operating principles of extended surfaces and Section C describes examples of the various types of extended surface which have been employed. Sections D, E and F deal with the classical, simplified and weighted fin efficiencies for single phase convection from the fins. Section G deals with fin efficiency under radiation, condensation and boiling conditions and, finally, Section H gives a brief discussion of heat transfer enhancement of the finned surfaces themselves.
B. Operational principles of extended surfaces
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