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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:
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,
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:
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,
E
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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Input Data and Recommended Practices
DOI 10.1615/hedhme.a.000251
3.3.5 Input data and recommended practices
J. Taborek
In this section we deal with three subjects:
- The basic set of input data as required for shell-side rating calculations, but also including those required for design of the overall exchanger, that is, including tube-side flow. These are presented in Table 1.
- Detailed comments to the input data, to give guidance to the designer as to proper practices and standards.
- Preliminary calculations of correlational parameters derived from the input data, as required for subsequent calculations.
Table 1 Input data required for rating of segmentally baffled shell-and-tube exchangers
| Item | Symbol | Units | Description |
|---|---|---|---|
| Shell-side geometry data | |||
| Tube and tube layout | |||
| 1 | Ds | mm | Inside shell diameter |
| 2 | Dt | mm | Tube outside diameter |
| 3 | Ltw | mm | Tube wall thickness |
| 4 | Dti | mm | Inside tube diameter |
| 5 | λtw | W/m K | Tube wall material thermal conductivity |
| 6 | Ltp | mm | Tube layout pitch |
| 7 | θtp | deg | Tube layout characteristic angle |
| Tube length (Refer to Figure 2) | |||
| 8 | Lto | mm | Overall nominal tube length |
| 9 | Lti | mm | Baffled tube length |
| 10 | Lta | mm | Effective tube length for heat transfer area |
| Baffle geometry (Figure 7) | |||
| 11 | Bc | % | Baffle cut as percent of Ds |
| 12 | Lbc | mm | Central baffle spacing |
| 13a | Lbi | mm | Inlet baffle spacing (optional) |
| 13b | Lbo | mm | Outlet baffle spacing (optional) |
| Nozzle | |||
| 14 | CN | code | Shell-side nozzle, impingement protection, annular distributor |
| Tube bundle geometry | |||
| 15 | Ntt | Total number of tubes or holes in tubesheet for U-tubes | |
| 16 | Ntp | Number of tube passes | |
| 17 | Nss | Number of sealing strips (pairs) | |
| 18 | CB | code | Tube bundle type (FX, UT, SRFH, PFH, PTFH) |
| 19 | Ltb | mm | Tube OD (Dt)-to-baffle hole clearance (diametral), Figure 12 |
| 20 | Lsb | mm | Inside shell-to-baffle clearance (diametral), Figure 13 |
| 21 | Lbb | mm | Inside shell-to-tube bundle bypass clearance (diametral), Figure 14 |
| Temperatures | |||
| 22 | Tsi | °C | Shell-side temperature inlet |
| 23 | Tso | °C | Shell-side temperature outlet |
| 24 | Tti | °C | Tube-side temperature inlet |
| 25 | Tto | °C | Tube-side temperature outlet |
| Shell-side process information | |||
| 26 | Ṁs | kg/s | Shell fluid mass flow rate |
| At shell fluid mean temperature | |||
| 27 | ρs | kg/m3 | Density |
| 28 | λs | W/m K | Thermal conductivity |
| 29 | (cp)s | J/kg K | Specific heat |
| 30 | ηs | cP = mPa/s | Dynamic viscosity (may require two values) |
| 31 | Rf,o | mK/W | Shell-side fouling resistance (referred to shell-side surface) |
| Tube-side process information | |||
| 32 | Ṁt | kg/s | Tube fluid mass flow rate |
| At tube fluid mean temperature | |||
| 33 | ρt | kg/m3 | Density |
| 34 | λt | W/m K | Thermal conductivity |
| 35 | (cp)t | J/kg K | Specific heat |
| 36 | ηt | cP = mPa/s | Dynamic viscosity (may require two values) |
| 37 | Rf,i | m K/W | Tube-side fouling resistance (referred to inside tube surface) |
| Special information | |||
| 38 | αs | W/m2 K | Shell-side heat transfer coefficient; if specified, omit items as shown in comments |
| 39 | αt | W/m2 K | Tube-side heat transfer coefficient; if specified, omit items as shown in comments |
| 40 | (Δps)max | kPa | Maximum permissible pressure drop, shell side |
| 41 | (Δpt)max | kPa | Maximum permissible pressure drop, tube side |
| 42 | (vt)max | m/s | Maximum permissible tube-side flow velocity (optional) |
| 43 | (vt)min | m/s | Minimum acceptable tube-side flow velocity (optional) |
A. Basic input data
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