Rate and simulate spiral plate exchangers

A fully incremental program, Xspe® lets you quickly and easily predict the thermal-hydraulic performance of Type I (i.e., spiral-spiral flow) single-phase spiral plate exchangers.

As a module in HTRI Xchanger Suite®, Xspe provides an easy-to-use interface with a rich, visual reporting system and also lets you quickly transfer applicable case data to other components.


  • Xspe models Type I (spiral-spiral flow) exchangers with sensible liquid or vapor streams.
  • 3D incrementation calculates local profiles for heat transfer and pressure drop.
  • Detailed output reports provide overall and localized results.
  • Extensive visualization tools show exactly how the exchanger is performing.
  • Integrated physical property system eliminates requirement for additional property generation software. Xchanger Suite includes VMGThermo™, an extensive and rigorous fluid physical property generator, from Virtual Materials Group, Inc.
  • Xspe integrates with other engineering tools such as process simulators, and CAPE-OPEN compliance ensures the broadest range of compatibility with other process simulation and physical property software.
  • Both input and output support multiple unit sets, and custom unit sets can be defined.

Geometry Specifications

Xspe Nozzle Location
  • Type I configurations (spiral-spiral flow)
  • Cocurrent and countercurrent flow configurations
  • Graphical nozzle location panel
  • Built-in standard nozzle sizing tables

Calculation Features

  • Rigorous heat transfer and pressure drop calculations performed using a 3D incrementation scheme to divide the exchanger into a large number of zones
  • Flexible process input that allows specification of known process information (temperature, weight fraction vapor, and/or flowrate) with the program calculating missing information based on energy balance
  • Two modes: rating (known duty and geometry) and simulation (unknown duty and known geometry)
  • Automatic calculation of the number of turns
  • Optional specification of heat transfer coefficients and safety factors

Output Reports

Xspe Session View
  • Extensive set of spreadsheet-style output reports that can be printed or exported to Microsoft® Excel®
  • Summary reports with overall results in one or two pages
  • Detailed reports for local profiles of all important parameters (temperature, pressure, heat transfer coefficients, heat flux, etc.)
  • Selectable font sizes to make reports easy to view
  • Customizable unit sets that can be changed dynamically as you work

Graphic Visualization

Xspe 2D Graph
  • Scaled drawing that provides visual confirmation of exchanger geometry
  • Plots of fluid properties so you can easily examine input or generated properties
  • Plots of local performance variables that allow you to quickly spot any performance issues such as an internal temperature pinch