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| Basic Thermal
Analysis: |
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| Database: |
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| Heat Exchanger: |
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| Other
Capabilities: |
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Capabilities
| Rating (Performance Analysis) |
| Calculation of the
heat transfer rate
Calculation of the outlet temperatures |
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Preliminary Design
| The program optimizes
with respect to a number of parameters including
shell diameter, number of shell passes, tube
length, and number of tube passes. Criteria
considered include minimum heat transfer area,
minimum pressure drop, and minimum power or a
combination of these factors. |
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| Options for Shell-Side Analysis |
| Kern's integral method
Bell-Delaware method
Stream analysis method |
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| System Configuration |
| Multiple tube passes,
multiple shell passes, multiple shells in series,
shells in parallel.
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| Phase Change Capabilities |
| Single-phase analysis
Two-phase analysis
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Boiling in tube, boiling in shell,
condensation in tube,
condensation in shell, multi-component analysis
Non-condensable |
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| Module Integration |
| INSTED/Database
modules used:
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Fluid thermophysical properties
Exchanger material conductivity
Tube counts
Fouling resistance
Roughness data
Friction factor calculation |
Links to the Fin Analysis program
for calculation of fin resistance and efficiency |
| Tube Types |
| | Plain tubes,
Integral low, Finned tubes |
| Tube Layout |
| | Triangle,
rotated triangle, square, rotated square |
| Baffle Types |
| | Segmented, no
tubes in window, strip baffles |
| Baffle Options |
| | Even baffle
spacing, Uneven baffle spacingf |
| Shell and Tube Dimenions |
| | No limit |
| Exchanges in Series and
Parallel |
| | No limit |
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Program Interaction
| Required Input for Rating Analysis |
| Method for shell
analysis
Tube configuration
Number of tubes
Number of tube passes
Number of shell passes
Tube length
Tube bundle diameter
Sealing strip pairs
Shell pass partition
Baffle spacing, baffle cut, baffle-shell leakage,
baffle-tube leakage. |
| For each fluid: |
| | Density,
specific heat, viscosity, thermal conductivity (or
selection of a fluid from the Database)
Tube/shell mass or volume flow rate
Tube/shell diameter
Absolute roughness of tube inner and outer walls
Thermal conductivity of tubes
Fouling resistance in inner and outer tube walls |
| Results from Rating
Analysis |
| | Heat transfer
rate, heat transfer area, U, UA, effectiveness,
LMTD, NTU |
| For each stream: |
| | Velocity,
Reynolds number, heat transfer coefficient,
Nusselt number, friction factor, pressure loss,
power |
| Results from Design
Analysis |
| | Several design
realizations as a function of the number of tube
and shell passes, number of tubes, length of
tubes, heat transfer rate, pressure drops, and
flow rates |
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Click to return to INSTED home page.
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