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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Damage, sources of heat exchangers
Damkohler number:
Damping:
Davis and Anderson criterion, for onset of nucleate boiling,
Decal, heat transfer medium,
Decane:
1-Decanol:
1-Decene:
Degradation temperature, of polymers,
Demisters, wire mesh, for multistage flash evaporators,
Dengler and Addoms correlation, for forced convective heat transfer in two-phase flow,
Density:
Deposition of droplets in annular flow
Deposition in fouling,
Desalination plants:
Desuperheaters for use in association with evaporators,
Developing flow in ducts:
Dew-poin corrosion,
Diathermanous fluid,
1,1-Dibromoethane:
Dibromomethane:
1,2-Dibromotetrafluoroethane (Refrigerant 114B2):
Dibutylamine:
Dibutyl ether:
Dichloroacetic acid:
o-Dichlorobenzene:
Dichlorodifluoromethane (see Refrigerant 12)
1,1-Dichloroethane (Refrigerant 150a):
1,2-Dichloroethane (Refrigerant 150):
1,1-Dichloroethylene:
cis-1,2-Dichloroethylene:
trans-1,2-Dichloroethylene:
Dichlorofluoromethane (see Refrigerant 21)
Dichloromethane (Refrigerant 30):
1,2-Dichlorotetrafluoroethane (Refrigerant 114)
1,2,3-Dichlorotrifluoroethane (Refrigerant 123)
Dielectric constant, of water,
Diethylamine:
n,n-Diethylaniline:
Diethylene glycol:
Diethyl ether:
Diethyl ketone:
Diethylsulfide:
Differential condensation:
Differential formulations for nonisothermal gas radiation,
Differential resistance term in heat exchanger design,
Differential vector operators in heat conduction,
Diffraction models for radiative heat transfer from surfaces,
Diffuse surfaces, radiative heat transfer between,
Diffuse wall passages, radiative heat transfer in,
Diffusers, single-phase flow and pressure drop in,
Diffusion, in multi-component condensation,
n,n-Diffusion coefficients:
1,1-Difluoroethane (Refrigerant 152a):
Difluoromethane (Refrigerant 32):
Diiodomethane:
Diisobutylamine:
Diisopropylamine:
Diisopropylether:
Dimensional analysis:
Dimensionless groups:
Dimethylacetylene:
Dimethylamine:
Dimethylaniline:
2,2-Dimethylbutane:
2,3-Dimethylbutane:
1,1-Dimethylcyclopentane:
Dimethylether:
Dimethylketone:
2,2-Dimethylpropane (neopentane):
Dimethylsulfide:
Dimpled surfaces, heat exchangers with,
1,4-Dioxane:
Diphenyl:
Diphenylamine:
Diphenylether:
Diphenylmethane:
Dipropyl ether:
Diisopropyl ether:
Dipropyl ketone:
Direct contact heat exchangers
Direct contact heat transfer,
Direct numerical simulation, of turbulence,
Dirichlet boundary condition, finite difference method,
Dished heads:
Discretization in numerical analysis:
Disk-and-doughnut baffled heat exchangers,
Disks, free convective heat transfer from inclined,
Dispersants, for fouling control,
Dispersed flow (liquid-liquid),
Dissipation of turbulent energy,
Distillation:
Distribution:
Dittus-Boelter equation, for single-phase forced convective heat transfer,
Dividing flow, loss coefficients in,
Dodecane:
1-Dodecene:
Donohue method, for shell-side heat transfer in shell-and-tube heat exchangers,
Double-pipe heat exchangers:
Double segmental baffled heat exchangers,
Downward facing surfaces, free convective heat transfer from,
Downward flow in vertical tubes, flow patterns in gas/liquid,
Dowtherm A:
Dowtherm J:
Dowtherms, as heat transfer media,
Drag coefficient:
Drag force:
Drag reduction,
Drainage, of condensate,
Dreitser, G,
Drift flux model for two-phase flows,
Drogemuller, P,
Droplets:
Dropwise condensation
Dry wall desuperheating (in condensation),
Dryers:
classification and selection,
introduction,
layout and performance data,
Drying loft,
Drying rates, prediction of,
Dryout:
Ducts, single-phase fluid flow and pressure drop in,
Duplex stainless steels,
Durand correlation for heterogeneous conveyance in solid/liquid flow,
Dynamically stable foam,
Dyphyl, heat transfer media,
Dzyubenko, B,
Layout and Performance Data
description of drying process in the Mollier chart,
energy and mass balances,
Mollier chart,
wet bulb temperature in,
practical design,
prediction of drying rates in,
prediction of residence time in: with nonprescribed material flow,
as type of heat exchange equipment,
Index
HEDH
A
B
C
D
Damage, sources of heat exchangers
Damkohler number:
Damping:
Davis and Anderson criterion, for onset of nucleate boiling,
Decal, heat transfer medium,
Decane:
1-Decanol:
1-Decene:
Degradation temperature, of polymers,
Demisters, wire mesh, for multistage flash evaporators,
Dengler and Addoms correlation, for forced convective heat transfer in two-phase flow,
Density:
Deposition of droplets in annular flow
Deposition in fouling,
Desalination plants:
Desuperheaters for use in association with evaporators,
Developing flow in ducts:
Dew-poin corrosion,
Diathermanous fluid,
1,1-Dibromoethane:
Dibromomethane:
1,2-Dibromotetrafluoroethane (Refrigerant 114B2):
Dibutylamine:
Dibutyl ether:
Dichloroacetic acid:
o-Dichlorobenzene:
Dichlorodifluoromethane (see Refrigerant 12)
1,1-Dichloroethane (Refrigerant 150a):
1,2-Dichloroethane (Refrigerant 150):
1,1-Dichloroethylene:
cis-1,2-Dichloroethylene:
trans-1,2-Dichloroethylene:
Dichlorofluoromethane (see Refrigerant 21)
Dichloromethane (Refrigerant 30):
1,2-Dichlorotetrafluoroethane (Refrigerant 114)
1,2,3-Dichlorotrifluoroethane (Refrigerant 123)
Dielectric constant, of water,
Diethylamine:
n,n-Diethylaniline:
Diethylene glycol:
Diethyl ether:
Diethyl ketone:
Diethylsulfide:
Differential condensation:
Differential formulations for nonisothermal gas radiation,
Differential resistance term in heat exchanger design,
Differential vector operators in heat conduction,
Diffraction models for radiative heat transfer from surfaces,
Diffuse surfaces, radiative heat transfer between,
Diffuse wall passages, radiative heat transfer in,
Diffusers, single-phase flow and pressure drop in,
Diffusion, in multi-component condensation,
n,n-Diffusion coefficients:
1,1-Difluoroethane (Refrigerant 152a):
Difluoromethane (Refrigerant 32):
Diiodomethane:
Diisobutylamine:
Diisopropylamine:
Diisopropylether:
Dimensional analysis:
Dimensionless groups:
Dimethylacetylene:
Dimethylamine:
Dimethylaniline:
2,2-Dimethylbutane:
2,3-Dimethylbutane:
1,1-Dimethylcyclopentane:
Dimethylether:
Dimethylketone:
2,2-Dimethylpropane (neopentane):
Dimethylsulfide:
Dimpled surfaces, heat exchangers with,
1,4-Dioxane:
Diphenyl:
Diphenylamine:
Diphenylether:
Diphenylmethane:
Dipropyl ether:
Diisopropyl ether:
Dipropyl ketone:
Direct contact heat exchangers
Direct contact heat transfer,
Direct numerical simulation, of turbulence,
Dirichlet boundary condition, finite difference method,
Dished heads:
Discretization in numerical analysis:
Disk-and-doughnut baffled heat exchangers,
Disks, free convective heat transfer from inclined,
Dispersants, for fouling control,
Dispersed flow (liquid-liquid),
Dissipation of turbulent energy,
Distillation:
Distribution:
Dittus-Boelter equation, for single-phase forced convective heat transfer,
Dividing flow, loss coefficients in,
Dodecane:
1-Dodecene:
Donohue method, for shell-side heat transfer in shell-and-tube heat exchangers,
Double-pipe heat exchangers:
Double segmental baffled heat exchangers,
Downward facing surfaces, free convective heat transfer from,
Downward flow in vertical tubes, flow patterns in gas/liquid,
Dowtherm A:
Dowtherm J:
Dowtherms, as heat transfer media,
Drag coefficient:
Drag force:
Drag reduction,
Drainage, of condensate,
Dreitser, G,
Drift flux model for two-phase flows,
Drogemuller, P,
Droplets:
Dropwise condensation
Dry wall desuperheating (in condensation),
Dryers:
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
classification and selection,
introduction,
layout and performance data,
Drying loft,
Drying rates, prediction of,
Dryout:
Ducts, single-phase fluid flow and pressure drop in,
Duplex stainless steels,
Durand correlation for heterogeneous conveyance in solid/liquid flow,
Dynamically stable foam,
Dyphyl, heat transfer media,
Dzyubenko, B,
Layout and Performance Data
description of drying process in the Mollier chart,
energy and mass balances,
Mollier chart,
wet bulb temperature in,
practical design,
prediction of drying rates in,
prediction of residence time in: with nonprescribed material flow,
as type of heat exchange equipment,
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Layout and Performance Data
DOI 10.1615/hedhme.a.000332
3.13.3 Layout and performance data
E. U. Schlünder
A. The Mollier chart
In most cases the drying agent is air. During the drying process, heat is transferred from the air to the product while vapor is transferred from the product to the air. This combined transfer process of heat and mass leads to a change of enthalpy as well as of the vapor concentration of the drying agent. It is convenient to depict those changes in an enthalpy concentration chart for the drying agent, the so-called Mollier chart for humid air as shown in Figure 1 [see also Krischer and Kast (1978)].The enthalpy of the humid air is defined as
\[\label{eq1} h=c_{p,\rm{air}}T+X\left(\Delta h^{0}_v+c_{p,\rm{vapor}}T\right)\tag{1}\]
cp,air (in J/kg dry air K) is the specific enthalpy of the dry air, cp,vapor is that of the pure vapor. Δhv0, in joules per kilogram, is the standard latent heat of vaporization at 0 °C, X is the vapor content in kilograms vapor/kilogram dry air or the absolute humidity, T is the temperature in degrees celsius, and h is the enthalpy of the humid air in joules per kilogram dry air. 𝜑 in Figure 1 is the relative humidity, which is equal to the ratio of the partial vapor pressure pv to the saturation vapor pressure at a given temperature pv*(T). The absolute humidity can be calculated from the partial vapor pressure pv and the total pressure p:
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