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E-type shells in shell-and-tube heat exchangers:
Ebert and Panchal equation, for crude oil fouling,
Eckert number,
Eddy viscosity:
Eddy diffusivity, of heat,
Edge, D,
Edwards, D K
EEC code for thermal design of heat exchangers,
Effective diffusivity,
Effective thermal conductivity of fixed beds,
Effective tube length in shell-and-tube heat exchangers,
Effectiveness of a heat exchanger:
Efficiency of fins,
Eicosane:
Eicosene:
Ejectors, in flash distillation plant,
EJMA (Expansion Joint Manufacturers Association), standards for expansion bellows
Elastic properties of solids:
El-Dessouky, H,
Electrical enhancement processes, in heat transfer augmentation,
Electric fields, effect on properties of rheologically complex materials,
Electric fields, in augmentation of condensation,
Electrical process heater, specification of,
Electrokinetics, for heat transfer augmentation in microfluidic systems,
Electromagnetic theory of radiation,
Electrostatic fields in augmentation of heat transfer,
Elements:
Elhadidy relation between heat and momentum transfer,
Embedding methods for radiative heat transfer in nonisothermal gases,
Embittlement, of stainless steels,
Emission of thermal radiation, in solids,
Emissivity:
Emitting media, interaction phenomena with,
Emulsions, viscosity of,
EN13445 (European Pressure Vessel Codes), design of heat exchangers to,
Enclosures:
Energy equation:
Energy recovery, maximum, in heat exchanger network design,
Enhanced surfaces, fouling in,
Enhancement devices:
Enlargements in pipes:
Enthalpy:
Entrainment in annular gas-liquid flow
Entrance effects in heat and mass transfer:
Entrance lengths, hydrodynamic in pipe flow,
Entrance losses for tube inlet in shell-and-tube heat exchanger,
Entry losses in plate heat exchangers,
Entropy generation and minimisation
Environmental impact, of fouling,
Eotvos number:
Epstein, N,
Epstein matrix, for fouling,
Equalizing rings, for expansion bellows,
Equilibrium interphase:
Equilibrium vapor nucleus,
Equivalent sand roughness,
Ergun equation, for pressure drop in fixed beds
ESDU correlations:
Esters:
Ethane:
Ethanol:
Ethers:
Ethyl acetate:
Ethylacetylene:
Ethylacrylate:
Ethylamine:
Ethylbenzene:
Ethyl benzoate:
Ethyl butanoate:
Ethylcyclohexane:
Ethylcyclopentane:
Ethyl formate:
Ethylene:
Ethylene diamine:
Ethylene glycol:
Ethylene oxide:
Ethylmercaptan:
1-Ethylnaphthalene:
2-Ethylnaphthalene:
Ethyl proprionate:
Ethyl propylether:
Ettouney, H,
Euler number:
Eutectic mixtures, condensation of forming immiscible liquids,
Evaporation:
Evaporative crystallisers,
Evaporators:
Exergy, definition of,
Exergy analysis,
Exit losses for tubes in shell-and-tube exchanger,
Expansion bellows, for shell-and-tube heat exchangers:
EJMA (Expansion Joint Manufacturers Association), standards for
Expansion joints, mechanical design of:
Expansion of tubes into tube sheets:
Expansion turbine, lost work in,
Explosively clad plate,
Explosive welding of tubes into tube sheets
Explosive expansion joints,
Extended surfaces (see also Fins)
Externally induced convection, in kettle reboilers,
Extinction coefficient,
Extinction efficiency,
Eyring fluid (non-Newtonian),
Index
HEDH
A
B
C
D
E
E-type shells in shell-and-tube heat exchangers:
Ebert and Panchal equation, for crude oil fouling,
Eckert number,
Eddy viscosity:
Eddy diffusivity, of heat,
Edge, D,
Edwards, D K
EEC code for thermal design of heat exchangers,
Effective diffusivity,
Effective thermal conductivity of fixed beds,
Effective tube length in shell-and-tube heat exchangers,
Effectiveness of a heat exchanger:
Efficiency of fins,
Eicosane:
Eicosene:
Ejectors, in flash distillation plant,
EJMA (Expansion Joint Manufacturers Association), standards for expansion bellows
Elastic properties of solids:
El-Dessouky, H,
Electrical enhancement processes, in heat transfer augmentation,
Electric fields, effect on properties of rheologically complex materials,
Electric fields, in augmentation of condensation,
Electrical process heater, specification of,
Electrokinetics, for heat transfer augmentation in microfluidic systems,
Electromagnetic theory of radiation,
Electrostatic fields in augmentation of heat transfer,
Elements:
Elhadidy relation between heat and momentum transfer,
Embedding methods for radiative heat transfer in nonisothermal gases,
Embittlement, of stainless steels,
Emission of thermal radiation, in solids,
Emissivity:
Emitting media, interaction phenomena with,
Emulsions, viscosity of,
EN13445 (European Pressure Vessel Codes), design of heat exchangers to,
Enclosures:
Energy equation:
Energy recovery, maximum, in heat exchanger network design,
Enhanced surfaces, fouling in,
Enhancement devices:
Enlargements in pipes:
Enthalpy:
Entrainment in annular gas-liquid flow
Entrance effects in heat and mass transfer:
Entrance lengths, hydrodynamic in pipe flow,
Entrance losses for tube inlet in shell-and-tube heat exchanger,
Entry losses in plate heat exchangers,
Entropy generation and minimisation
Environmental impact, of fouling,
Eotvos number:
Epstein, N,
Epstein matrix, for fouling,
Equalizing rings, for expansion bellows,
Equilibrium interphase:
Equilibrium vapor nucleus,
Equivalent sand roughness,
Ergun equation, for pressure drop in fixed beds
ESDU correlations:
Esters:
Ethane:
Ethanol:
Ethers:
Ethyl acetate:
Ethylacetylene:
Ethylacrylate:
Ethylamine:
Ethylbenzene:
Ethyl benzoate:
Ethyl butanoate:
Ethylcyclohexane:
Ethylcyclopentane:
Ethyl formate:
Ethylene:
Ethylene diamine:
Ethylene glycol:
Ethylene oxide:
Ethylmercaptan:
1-Ethylnaphthalene:
2-Ethylnaphthalene:
Ethyl proprionate:
Ethyl propylether:
Ettouney, H,
Euler number:
Eutectic mixtures, condensation of forming immiscible liquids,
Evaporation:
Evaporative crystallisers,
Evaporators:
Exergy, definition of,
Exergy analysis,
Exit losses for tubes in shell-and-tube exchanger,
Expansion bellows, for shell-and-tube heat exchangers:
EJMA (Expansion Joint Manufacturers Association), standards for
Expansion joints, mechanical design of:
Expansion of tubes into tube sheets:
Expansion turbine, lost work in,
Explosively clad plate,
Explosive welding of tubes into tube sheets
Explosive expansion joints,
Extended surfaces (see also Fins)
Externally induced convection, in kettle reboilers,
Extinction coefficient,
Extinction efficiency,
Eyring fluid (non-Newtonian),
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
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Thermal Design
DOI 10.1615/hedhme.a.000278
3.6.2 Thermal design
J. W. Palen
A. Kettle, internal, and horizontal thermosiphon reboilers
Kettle, internal, and horizontal thermosiphon reboilers are similar in that heat is transferred to a vaporizing two-phase mixture flowing across a tube bundle. Nucleate and convective boiling mechanisms both take part in the boiling process. For kettle reboilers, convective circulation takes place in an enlarged shell with mostly vapor going overhead. For the thermosiphon, a two-phase mixture is discharged from the reboiler and convective circulation involves the external piping and liquid reservoir. Nevertheless, the heat transfer processes are essentially the same in both types, so thermal design is covered in the same section. The following elements are important.
(a) Single-tube nucleate boiling
The nucleate boiling mechanism has considerable influence on the behavior of kettle and horizontal thermosiphon reboilers, so a correlation for nucleate boiling on single tubes is a necessary (but not sufficient) component of the design calculations For a more detailed discussion of nucleate boiling theory, refer to Section 2.7.2.
The nucleate boiling heat transfer coefficient can be described by either of the two following forms, both of which may be convenient in different types of calculations:
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