Xchanger Suite®

Rate, simulate, and design heat transfer equipment

Xchanger Suite
Download information sheet

Xchanger Suite®—considered to be the most advanced thermal process design and simulation software—rates, simulates, and/or designs a variety of heat transfer equipment. HTRI’s calculation methods are backed by over half a century of applied research and data collected on industrially relevant heat transfer equipment. Based on the results of this ongoing effort, we update our methods to meet your evolving engineering needs.

All Xchanger Suite components are highly flexible, allowing rigorous specification of the exchanger geometry. This capability makes the best use of HTRI’s proprietary heat transfer and pressure drop correlations and allows the most accurate performance predictions possible for all exchangers.

  • Modern user interface that allows multiple case files (containing both text and graphical inputs/outputs) to be open at the same time.
  • Fully incremental calculation modules compute localized heat transfer and pressure drop using local fluid properties.
  • Extensive output reports provide detailed results, including local profiles of all important parameters.
  • Comprehensive help provides background information, graphs, explanation of input panels and output reports, user tips, and more.
  • Graphs and scale drawings provide in-depth visualization of calculated results.
  • Extensive, user-extendable databank for materials of construction enables faster input of complex information.
  • Software can interface with
    • process simulators
    • physical property databanks
    • mechanical design programs
    • Exchanger Optimizer
    • integrated engineering software
    • user-written applications in Microsoft® Excel® and other programming languages
    • CAPE-OPEN compliant applications
  • Installation includes VMGThermo®, an extensive and rigorous fluid physical property generator from Schlumberger.
  • Import of input files from HTFS® (shell-and-tube and plate-fin exchangers), Honeywell’s UniSim® Heat Exchangers (shell-and-tube and plate-fin exchangers), and Aspen Exchanger Design & Rating (shell-and-tube and air-cooled exchangers) allow modeling within Xchanger Suite.
  • Exchanger Optimizer, installed separately, can be launched from within Xchanger Suite to generate comprehensive cost assessments and validate designs based on ASME code calculations.



Rate, simulate, and design air coolers and economizers, including natural draft (fans off) and forced draft conditions. Xace includes vendor fan selection calculations and options to simulate the effect of flow and temperature maldistribution.

Xist    Xhpe    Xjpe

Rate, simulate, and design virtually any type of shell-and-tube exchanger, including kettles, hairpins, thermosiphons, reflux condensers, and falling film evaporators. Xist supports all standard TEMA exchanger types, and includes integrated tools for flow-induced vibration calculations and tube layout design.


Simulate and design multi-stream axial and crossflow plate-fin exchangers using an incremental model with research-based heat transfer and pressure drop correlations. Xpfe contains graphical layout tools that make even complex stream arrangements easy to create.


Rate, simulate, and design plate-and-frame exchangers using user-defined plate types or plates selected from an internal manufacturers’ databank. Xphe contains a port maldistribution model that calculates the flow through each plate channel.


Rate and simulate single-phase spiral plate exchangers using an incremental model with HTRI-validated heat transfer and pressure drop correlations. Xspe models cocurrent and countercurrent spiral flow (Type I exchangers).


Calculate flow-induced vibration for a tube in a shell-and-tube exchanger using a rigorous finite element based algorithm. Xvib considers fluidelastic instability and vortex shedding mechanisms for both straight tubes and U-tubes.


Simulate the performance of cylindrical and box heaters. Xfh uses a Hottel zoning method to calculate localized radiant and process side performance. Additional combustion and convection section modules allow evaluation of a complete process fired heater. For single-zone modeling, use Xfh® Ultra, our general-purpose fired heater program.

Xchanger Suite works with many major software packages for physical properties, process simulation, mechanical design, integrated engineering, and fan selection.

Software Company
Aspen Plus* Aspen Technology, Inc.
Aspen HYSYS Aspen Technology, Inc.
Petro-SIM KBC Advanced Technologies, Inc.
ProMax Bryan Research & Engineering, LLC
Simulis Thermodynamics* ProSim S.A.
UniSim Design Honeywell International Inc.
(distributed with Xchanger Suite


Software Company
Aspen Plus* Aspen Technology, Inc.
Aspen HYSYS Aspen Technology, Inc.
Petro-SIM KBC Advanced Technologies, Inc.
ProMax* Bryan Research & Engineering, LLC
ProSim Plus* ProSim S.A.
UniSim Design Honeywell International Inc.
Symmetry Schlumberger


Software Company
Aspen EDR Aspen Technology, Inc.
AutoPIPE Vessel (Microprotol) Bentley Systems, Inc.
COMPRESS Exchanger Codeware, Inc.
PASSAT NTP Truboprovod
PVElite Hexagon PPM
NEXTGEN Sant'Ambrogio Servizi Industriali s.r.l.
Vessel Exchanger Software (VES) Red-Bag B.V.
WIN_Shell SSE GmbH

Software Company
Aspen Zyqad Aspen Technology, Inc.
AXSYS.Process Bentley Systems, Inc.

Fan selection software from the following companies is embedded in Xace

  • Axial Fans Int s.r.l.
  • Cofimco S.p.A.
  • Howden Cooling Fans
  • Hudson Products Corporation
  • The Moore Company

The following are recommended to run Xchanger Suite 9.0 and eLibrary 2.1 successfully:

  • Microsoft® Windows® 8.1, Windows 10, Server 2012, Server 2016, or Server 2019
  • 32- or 64-bit processor
  • 2 GB RAM
  • Approximately 2 GB hard drive space

HTRI recommends a 2 GHz or faster processor with 4 GB RAM, as well as an XGA or better graphics adapter (1024 × 768 resolution).

What’s new with Version 9.0

Changes in this release include the following:

  • Improvements to methods
    • Added reduced pressure calculation method for boiling applications
    • Added ground clearance checks in Xace®
    • Updated tee and bend pressure drop methods applicable to thermosiphon piping in Xist®
    • Updated boiling heat transfer coefficient method for Xphe®
    • Updated condensation heat transfer coefficient method for Xphe
    • Enhanced handling of unequal duties in Xphe
    • Modified default velocities near impingement plates in Xvib®
  • Improvements to messaging
    • Runtime and data check messages sorted into groups for better visibility
    • A number of new or enhanced warning messages
    • Display of license expiration information
  • Improvements to reporting
    • Additional cost-related columns for design run reporting (using costs from Exchanger Optimizer, if available)
    • Wide layout option for Xace temperature monitor
    • Display of report attributes and navigation arguments in F9 dialog
  • Improvements to user interface
    • Ability to enable or disable property isobars to help you troubleshoot effects of the number of isobars
    • Addition of stream molecular weight to table properties, required for calculation of nucleate boiling coefficient
    • Display of graphs of data in failed or cancelled runs to help you troubleshoot difficult cases
    • Display of baffles in hairpin exchangers
  • Option to use 32-bit or 64-bit version
  • New import for Aspen Exchanger Design & Rating™ air-cooler cases

Contact us at htri@htri.net for more information on Xchanger Suite.