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Hagen-Poiseuille law
Hagen-Rubens relation, between electrical and optical constants,
Hall Taylor, N S,
Halogenated hydrocarbons:
Handley and Heggs equation for fixed bed pressure drop,
Hankinson and Thomson method, for liquid density:
Hardening (precipative) of stainless steels,
Hardwick, R,
Harris, D,
Hausen equation for developing laminar flow,
Hays, G F
Headers in shell-and-tube heat exchangers,
Heads, in heat exchangers:
Heat and mass transfer:
Heat exchanger design, introduction,
Heat exchangers:
Heat of vaporisation (see Enthalpy of vaporisation), of pure substances
Heat pipes:
Heat pumping, relation to heat exchanger network design,
Heat storage (see Regenerators and thermal energy storage) entropy generation in,
Heat transfer:
Heat transfer coefficient:
Heat transfer media,
Heat transfer salt,
Heat transfer regimes:
Heat of vaporization,
Heated cavity reflectometer,
Heating media, for reboilers,
Heavy water, physical properties of,
Heggs, P J,
Helical coils of circular cross section:
Helical coils of rectangular cross section,
Helical inserts, for enhancement of heat transfer in boiling,
Helium:
Helmholtz reciprocity principle, in radiative heat transfer,
Henry, J A R,
Henry-Fauske model, for critical two-phase flow,
Henry's law, for partial pressure,
Heptadecane:
Heptadecene:
Heptane:
1-Heptanol:
1-Heptene:
Herman, K W,
Hermes, C L L,
Heterogeneous conveyance in horizontal pipes,
Heterogeneous nucleation in boiling,
Hewitt, G F
Hexachloroethane (Refrigerant 116):
Hexacyclopentane, superheated vapor properties,
Hexadecane:
Hexadecene:
1,5-Hexadiene:
Hexagonal cells, in free convection,
Hexamethylbenzene:
Hexane:
Hexanoic acid:
1-Hexanol:
1-Hexene:
Hexylbenzene:
Hexylcyclohexane:
Hexylcyclopentane,
Hicks equation, for fixed-bed pressure drop,
High pressure closures, ASME VIII code guidance for,
High-chrome steels, thermal and mechanical properties,
High-finned tubes, correlations for single-phase heat transfer in flow over,
Hills, P D
Hohlraum cavity,
Holdup, in liquid-liquid flow,
Holland, guide to national practice for mechanical design of heat exchangers,
Homogeneous condensation (fog formation),
Homogeneous model:
Homogeneous nucleation:
Honeycombs:
Hopkins, D,
Horizontal condensers:
Horizontal cylinders:
Horizontal layers, of fluid, free convection heat transfer in,
Horizontal pipes:
Horizontal shell-side evaporator,
Horizontal surfaces:
Horizontal thermosiphon reboilers:
Horizontal tube-side evaporator,
Horizontal tubes:
Hottel's rule, in absorption of radiation by gases,
Hsu criterion, for onset of nucleate boiling,
Hybrid cooling towers,
Hydraulic conveyance:
Hydraulic expansion, of tubes into tube sheets in shell-and-tube heat exchangers,
Hydraulic turbine, lost work in,
Hydraulic resistance, in flow of supercritical fluids,
Hydraulically smooth surface,
Hydrazine:
Hydrocarbons:
Hydrodynamic entrance length, in single-phase flow in ducts,
Hydrogen:
Hydrogen bromide:
Hydrogen chloride:
Hydrogen cyanide:
Hydrogen fluoride:
Hydrogen iodide:
Hydrogen peroxide:
Hydrogen sulfide:
Hydrostatic testing of shell-and-tube heat exchangers,
Hysteresis:
Index
HEDH
A
B
C
D
E
F
G
H
Hagen-Poiseuille law
Hagen-Rubens relation, between electrical and optical constants,
Hall Taylor, N S,
Halogenated hydrocarbons:
Handley and Heggs equation for fixed bed pressure drop,
Hankinson and Thomson method, for liquid density:
Hardening (precipative) of stainless steels,
Hardwick, R,
Harris, D,
Hausen equation for developing laminar flow,
Hays, G F
Headers in shell-and-tube heat exchangers,
Heads, in heat exchangers:
Heat and mass transfer:
Heat exchanger design, introduction,
Heat exchangers:
Heat of vaporisation (see Enthalpy of vaporisation), of pure substances
Heat pipes:
Heat pumping, relation to heat exchanger network design,
Heat storage (see Regenerators and thermal energy storage) entropy generation in,
Heat transfer:
Heat transfer coefficient:
Heat transfer media,
Heat transfer salt,
Heat transfer regimes:
Heat of vaporization,
Heated cavity reflectometer,
Heating media, for reboilers,
Heavy water, physical properties of,
Heggs, P J,
Helical coils of circular cross section:
Helical coils of rectangular cross section,
Helical inserts, for enhancement of heat transfer in boiling,
Helium:
Helmholtz reciprocity principle, in radiative heat transfer,
Henry, J A R,
Henry-Fauske model, for critical two-phase flow,
Henry's law, for partial pressure,
Heptadecane:
Heptadecene:
Heptane:
1-Heptanol:
1-Heptene:
Herman, K W,
Hermes, C L L,
Heterogeneous conveyance in horizontal pipes,
Heterogeneous nucleation in boiling,
Hewitt, G F
Hexachloroethane (Refrigerant 116):
Hexacyclopentane, superheated vapor properties,
Hexadecane:
Hexadecene:
1,5-Hexadiene:
Hexagonal cells, in free convection,
Hexamethylbenzene:
Hexane:
Hexanoic acid:
1-Hexanol:
1-Hexene:
Hexylbenzene:
Hexylcyclohexane:
Hexylcyclopentane,
Hicks equation, for fixed-bed pressure drop,
High pressure closures, ASME VIII code guidance for,
High-chrome steels, thermal and mechanical properties,
High-finned tubes, correlations for single-phase heat transfer in flow over,
Hills, P D
Hohlraum cavity,
Holdup, in liquid-liquid flow,
Holland, guide to national practice for mechanical design of heat exchangers,
Homogeneous condensation (fog formation),
Homogeneous model:
Homogeneous nucleation:
Honeycombs:
Hopkins, D,
Horizontal condensers:
Horizontal cylinders:
Horizontal layers, of fluid, free convection heat transfer in,
Horizontal pipes:
Horizontal shell-side evaporator,
Horizontal surfaces:
Horizontal thermosiphon reboilers:
Horizontal tube-side evaporator,
Horizontal tubes:
Hottel's rule, in absorption of radiation by gases,
Hsu criterion, for onset of nucleate boiling,
Hybrid cooling towers,
Hydraulic conveyance:
Hydraulic expansion, of tubes into tube sheets in shell-and-tube heat exchangers,
Hydraulic turbine, lost work in,
Hydraulic resistance, in flow of supercritical fluids,
Hydraulically smooth surface,
Hydrazine:
Hydrocarbons:
Hydrodynamic entrance length, in single-phase flow in ducts,
Hydrogen:
Hydrogen bromide:
Hydrogen chloride:
Hydrogen cyanide:
Hydrogen fluoride:
Hydrogen iodide:
Hydrogen peroxide:
Hydrogen sulfide:
Hydrostatic testing of shell-and-tube heat exchangers,
Hysteresis:
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
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Helical Channels of Rectangular Cross Section
DOI 10.1615/hedhme.a.000182
2.5.15 Helical channels of rectangular cross section
P. Poškas and V. Simonis
A. Introduction
One promising method of enhancing convective heat transfer is to utilise the action of mass centrifugal forces on the flow of the heat transfer agent. This is realized in curvilinear (including helical) channels of different cross sections. Although a good deal of attention has been given to thermohydraulic investigations in curvilinear channels, the results obtained refer primarily to average characteristics, i.e. to the length- and perimeter-averaged mean heat transfer or only to length-averaged parameters. The mean heat transfer in helically coiled tubes of circular cross section is analyzed by Gnielinski in Section 181.
The local heat transfer over the channel length and perimeter has been studied to a much lesser extent. Various studies demonstrate a considerable difference in heat transfer from the separate surfaces of the curvilinear channels.
The geometry of the curvilinear channels discussed in the present section is illustrated in Figure 1. The fluid follows a spiral path between an outer tube of diameter d2 (the concave surface) and an inner tube of diameter d1 (the convex surface). The flow is guided into a spiral path by a spiral plate as illustrated.
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