Vertical Thermosiphon Heat Exchanger (VTD) is a software application that uses kern method to do the thermal design calculations for Vertical thermosyphons.
Below are the main features:
Vertical Thermosiphon Heat Exchanger Main Features
- The software will allow the user to enable built in tube counts tables or use own values for specifying tube dimensions and number. If use is using own dimensions; the software can also calculate the number of tubes and shell diameter.
- Support S.I Units and English (U.S) Units of measurement
- Thermal design calculations using kern method
- Minimum and maximum circulation ratio as well as minimum and maximum tube lengths can be specified for iterations.
- Liquid height for circulation check
- Unit Converter includes 23 measurements units with 200-unit conversions
- Select TEMA types/designations
- Heat load can be entered or calculated
- Counter flow or parallel flow arrangement
- Calculate or specify Recirculation ratio
- Calculate or specify exit vapor mass fraction
- Calculate pressure drops, overall heat transfer coefficients…etc, the table included below includes more details on calculated variables but not limited to all of them.
- The calculations are preformed using trial and error basis. Based on the user’s choice the software can either start with iterating the recirculation ratio or the tube length.
- Advisory design recommendations and validation for maximum heat flux density rate.
- Mist flow at tube outlet check
- Driving force check
Databases / Tables
- Water and steam properties
- Tube counts
- Fouling Factors
- Typical film heat transfer coefficient values, store your own values too!
- Material thermal conductivities
- Estimate the Physical properties of pure components for more than 1450 components; the database has the ability to estimate Thermal Conductivity, Density, Heat Capacity and Viscosity. The database also included critical properties, boiling and melting points and come as a standalone interface but easily integrated with the software. Estimate mixture properties. (ALL ESTIMATION METHODS CURRENTLY SUPPORT LIQUIDS ONLY)
- Internal Physical properties estimation database “PProps”, containing 500 fluids.
- Ability to add your own properties in the additional user databases.
Outcomes
- Results are initially displayed in a data grid table containing all cases side by side with the initial case or main case being the first in the table.
- Drawing summary can be generated for individual case results
- The table with all cases can be copied to clipboard for pasting anywhere.
- A results summary report of the case selected can also be generated copied or exported to .csv as well as printed.
- Results can also be exported to .csv file to be opened in any office software such as Microsoft excel or open office.
| Description | Required input | Optional input | Calculated variable | Comments |
|---|---|---|---|---|
| Temperatures | Yes | – | – | – |
| Physical properties | Yes | – | – | |
| Prandtl number | No | Yes | Yes | – |
| Inlet mass flow rate | Yes | Yes | Yes | Calculated for unknown side |
| Heat Duty | No | Yes | Yes | – |
| Log Mean Temperature | – | – | Yes | – |
| Heat transfer area | – | – | Yes | – |
| Flow area | – | – | Yes | – |
| velocity | – | – | Yes | – |
| Mass velocity | – | – | Yes | – |
| Exit liquid mass flow rate | – | – | Yes | Process side |
| Exit vapor mass flow rate | – | – | Yes | Process side |
| Exit vapor mass fraction | – | Yes | Yes | Process side |
| Shell diameter | – | Yes | Yes | – |
| Number of tubes | – | Yes | Yes | – |
| Tube thickness | Yes | – | Yes | BWG list available |
| Tube clearance | – | – | Yes | – |
| Tube length | Yes | – | – | – |
| Tube pitch | Yes | – | – | – |
| Tube inside diameter | – | Yes | Yes | – |
| Tube outside diameter | Yes | – | – | – |
| Number of baffles | – | – | Yes | – |
| Baffle cut | Yes | – | – | – |
| Baffle to shell clearance | – | Yes | Yes | – |
| Maximum allowable heat flux | – | Yes | Yes | Assumed value can be provided |
| Heat transfer coefficient | – | Yes | Yes | – |
| Overall heat transfer coefficient (Clean) | – | – | Yes | – |
| Overall heat transfer coefficient (Design) | – | – | Yes | – |
| Lockhart-Martinelli parameter | – | – | Yes | – |
| Critical mass flow velocity for mist flow check | – | – | Yes | – |
| Pressure drop – inlet | – | – | Yes | Shell side |
| Pressure drop – frictional | – | – | Yes | Shell side |
| Pressure drop – outlet | – | – | Yes | Shell side |
| Pressure drop – inlet | – | – | Yes | Tube side |
| Pressure drop – outlet | – | – | Yes | Tube side |
| Pressure drop – frictional | – | – | Yes | Tube side |
| Pressure drop – static | – | – | Yes | Tube side |
| Pressure drop – acceleration | – | – | Yes | Tube side |
| Driving force | – | – | Yes | – |
| Head elevation | – | – | Yes | – |
| Required liquid height for circulation | – | – | Yes | – |
| Recirculation ratio | – | Yes | Yes | – |
Screen Shots Links
Click here for Screen shots on Facebook
Click here for Screen shots on Flickr
Download
Click here to download the demo version of this software. The demo will operate for 90 days with the 4 examples provided in the main screen.
to check out the full version history for this software click here
Latest Demonstration Video
Example 1 English / US Units
Example 2 – SI Units
Features
00:01:12 Water and steam properties
00:02:16 Fouling factors
00:02:46 Heat transfer coefficients
00:03:00 Material thermal conductivity
00:03:24 Units converter
00:04:09 Fluids user database for storing custom properties
00:04:40 Importing physical properties
Storing data in fluids user database