Double Pipe Heat Exchanger Design

Double pipe heat exchanger design (DHex) is a software tool that is made to demonstrate the chemical design calculations of Double Pipe (hairpin) Heat Exchangers. 

The software will do all the thermal calculations involved in the design and will generate a summary of all results.

Below is a list of some functions:

Double pipe heat exchanger design (DHex) software features:

Software Features

  • Support S.I Units and English (U.S) Units of measurement.
  • Units converter includes 23 measurements units with 200-unit conversion
  • Ability to import properties to Hot/Cold sides from Microsoft Excel.
  • Add your own Nusselt correlation
  • Save/Load results

Calculations

  • Ability to calculate unknown Cold or Hot side temperatures. Unknown exit temperatures on both sides or any two temperatures on both sides
  • Unknown Flow rate on either hot or cold side
  • Perform thermal analysis for bare tube double pipe (hairpin) heat exchangers.
  • Perform thermal analysis for finned tube double pipe (hairpin) heat exchangers.
  • Choose from Counter Current or Co-Current Flow arrangement
  • Choose from Series arrangement or Series-Parallel arrangement.
  • The software will also tell you the location of Hot/Cold fluids within the heat exchanger (Inner Pipe or Outer Pipe).
  • Select from different correlations to calculate Cold/Hot side heat transfer coefficient. Also, the ability to adjust Nusselt number if you do have a different correlation.
  • Calculate the Area, Flow area, Length, Log Mean Temperature Difference, Number of Hairpins, Unknown Flow rate.
  • Calculate the scale resistance (dirt factor), Equivalent Diameter.
  • Calculate Inner Pipe/Outer Pipe (Annulus) side Reynolds, Nusselt numbers & Prandtl Numbers.
  • Duty Calculation, Clean and Design Overall heat transfer coefficient calculations
  • The ability to define the Duty also the ability to define the heat transfer coefficient on either side.
  • Inner Pipe/Outer Pipe (Annulus) velocities and Mass velocity calculations
  • Number of Transfer Units and Thermal Capacity ratio calculation.
  • Clean and Fouled Fin Efficiency calculations for finned tube heat exchanger.
  • Pressure drop calculations & Entrance and Exit losses.
  • Pumping power calculation.
  • Plot Temperature profile for hot and cold sides. This aids in also identifying any temperature cross. 

Included databases

  • Estimate the Physical properties of pure components for more than 1450 fluids; 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)
  • User database functions to allow user to add/delete fluids, pipe sizes and heat transfer coefficients and load to hot/cold side (Empty database!).
  • Fouling factors

Results

  • Export Results summary to Microsoft Excel Engineering Datasheet format. Save/Load results. Generate/Print a summary of results
  • Display multiple cases in results grid
  • Export Results summary to .rtf file format that can be opened in Microsoft Word

Limitations

  • Single phase fluid operations with exception to steam which is supported.
  • Single tube units, multi tubes are not supported.

Download

You can download a demo version of Double pipe heat exchanger design software (DHex), the demo version will function with limitations for 90 days with predefined selected examples. 

Please note: The demo version doesn’t necessary contain the latest updates. For list of latest updates to the Full version please check the version history

Click to Download  Double Pipe Heat Exchanger

Other Links
View on YouTube 

Features videoOil exchanger example

View Video Clip on this website

Screen shots

Double pipe heat exchanger software
Main screen

Follow the Screen shots page for more screen shots on double pipe heat exchanger design software

System Requirements

DHex needs the following computer configuration to run:
1. Microsoft Windows operating system
2. 64MB RAM
3. 30MB free disk space
4. Microsoft Dot Net 4.6 Framework

Windows platforms:
Windows Vista SP2, Windows 7 SP1, Windows 8, Windows 8.1, Windows 10
32 bit & 64 bit operating systems.