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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:
condensers,
corrosion and other damage,
costing,
definitions and quantitative relationships,
description of,
design,
double pipe,
effectiveness of:
entropy generation in,
F-correction method for
F-factor charts for,
fouling of,
gas-liquid pressure drop in,
heat pipe,
mechanical design: air-cooled,
networks of, pinch analysis method for,
numerical solution methods for: with calculation of flow pattern,
plate fin,
plate, thermal design of,
P-NTU method for
practical aspects of operation,
pressure drop in headers, nozzles, and turnarounds,
representation as interpenetrating continua,
safety of
shell-and-tube (single phase), thermal design of
suction line exchangers in refrigeration,
twisted tube,
with dimpled surfaces,
with tube inserts,
Θ-method for
Θ-method chart for,
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:
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
condensers,
corrosion and other damage,
costing,
definitions and quantitative relationships,
description of,
design,
double pipe,
effectiveness of:
entropy generation in,
F-correction method for
F-factor charts for,
fouling of,
gas-liquid pressure drop in,
heat pipe,
mechanical design: air-cooled,
networks of, pinch analysis method for,
numerical solution methods for: with calculation of flow pattern,
plate fin,
plate, thermal design of,
P-NTU method for
practical aspects of operation,
pressure drop in headers, nozzles, and turnarounds,
representation as interpenetrating continua,
safety of
shell-and-tube (single phase), thermal design of
suction line exchangers in refrigeration,
twisted tube,
with dimpled surfaces,
with tube inserts,
Θ-method for
Θ-method chart for,
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:
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Suction line heat exchangers
DOI 10.1615/hedhme.a.000402
3.26.6 Suction line heat exchangers
J. R. Barbosa, Jr. and C. J. L. Hermes
A. Liquid to suction line heat exchanger
Some refrigeration systems, particularly those operating at low evaporating temperatures (e.g., household refrigerators and freezers), employ an additional heat exchanger to transfer heat from the liquid going to the expansion device to the vapour going to the compressor, as illustrated in Figure 1. The internal heat exchanger, also called liquid to suction line heat exchanger (LL/SL HX), increases the refrigerating effect by reducing the vapour-quality at the evaporator inlet as heat is removed from the liquid leaving the condenser (enthalpy difference between points 3 and 4 in Figure 1). Although the heat transfer between the refrigerant in the expansion device and the suction line increases the refrigeration capacity per unit mass flow rate (h6 – h4 > h6 – h3), it also results in the compression being pushed farther out into the superheated vapour region, where the compressor inlet aspires a higher specific volume gas (that results in a decrease in mass flow rate) and the compressor work per unit mass (h2 – h1) is greater. The system COP, on the other hand, may increase or not depending on the refrigerant. The COP decreases for ammonia and R-22, but it increases for R-134a and R-290, for example. More details can be found in Gosney (1982).
Figure 1 Schematic representation of a refrigeration cycle with a liquid to suction line heat exchanger
Liquid to suction line heat exchangers are usually assembled according to a double-pipe counterflow arrangement (see Section 3.2). The amount of heat to be transferred per unit of mass is given by the following energy balance,
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