HTRI Xchanger Suite

Rate, simulate, and design heat transfer equipment

Xchanger Suite
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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, graphical user interface that allows the user to have multiple case files (containing both text and graphical inputs/outputs) open at the same time.
  • Fully incremental calculation modules compute localized heat transfer and pressure drop using local fluid properties.
  • Includes VMGThermo, an extensive and rigorous fluid physical property generator from Virtual Materials Group, Inc.
  • Extensive output reports provide detailed results, including local profiles of all important parameters.
  • Comprehensive online 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.
  • Includes extensive, user-extendable databank for materials of construction.
  • Interfaces to
    • 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
  • Imports shell-and-tube and plate-fin exchanger input files from HTFS®, Honeywell’s UniSim® Heat Exchangers, and Aspen Exchanger Design & Rating products.
  • Exchanger Optimizer can now 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 plain 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
Virtual Materials Group, Inc.


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 8.2 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 8.2

HTRI research has contributed to several changes in this version, including

  • an improved model for pressure drop in window flow
  • an X-shell delta correction method
  • a subcooling monitor
  • turndown limit messaging for vertical thermosiphons
  • flow regime maps for straight pipe elements when selecting detailed piping options

Other improvements to the user interface make it even easier for you to use the software, such as

  • the option to specify air-cooler fans as on or off
  • a Minimize piping input field and logic to control when the program modifies nozzles between units in series
  • the option to specify finned U-bends
  • extended capabilities for property generation, improved interpolation, and removal of the three-point property requirement

Contact us at for more information on Xchanger Suite.