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Taborek, J, xlv-lvi
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 Contact Resistance (TCR)/Thermal Contact Conductance (TCC)
in bolted joints,
introduction to,
with cylindrical contacts and finned tubes,
with enhanced flat surfaces,
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
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),
U
V
W
X
Y
Z
Thermal Contact Resistance (TCR)/Thermal Contact Conductance (TCC)
in bolted joints,
introduction to,
with cylindrical contacts and finned tubes,
with enhanced flat surfaces,
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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Thermal Contact Resistance (TCR)/Thermal Contact Conductance (TCC)
DOI 10.1615/hedhme.a.000164
2.4.6 Thermal contact resistance (TCR) / thermal contact conductance (TCC)
H. J. Sauer, Jr. and J. W. Sheffield
A. Introduction
When two similar or dissimilar solid materials at different temperatures are brought into contact, energy is transferred across the interface of contact. If the two surfaces could be obtained free of contamination and brought into perfect contact without any gaps at the interface, the resistance to the flow of heat would be negligible. However, this condition is not one obtainable in practice. Hard surfaces, including metals, even when highly polished and apparently flat, show appreciable contact resistance to heat flow. This resistance is caused by a lack of complete contact between the mating surfaces: i.e., when two surfaces are pressed together, contact is actually made only at a few discrete points due to the individual surface roughness and microscopic asperities, as illustrated in Figure 1. As the interface is approached, heat flux lines tend to converge to the direct solid-to-solid contact points since this path offers less resistance than the gaps which may be filled with air or evacuated. The result is the formation of a temperature discontinuity at the interface.
For metal surfaces, the solid-to-solid contact area between the surfaces is generally a small fraction of the apparent area over which they meet. The direct contact area may be less than 1 percent of the total and generally exceeds 10 percent only when bonding agents or surface enhancements are used. When the pressure on the contact is increased, the peaks in contact will deform and the contact points will increase in both size and number. For dissimilar metals, the irregularities of the softer surface may undergo full plastic deformation while the peaks of the harder metal embed in the softer.
Thermal contact resistance (TCR) is defined as
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