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Xist Workshop

Course Fee: US$450

Even if your work is limited to shell-and-tube heat exchangers, there’s much to be learned! This workshop is devoted to the geometries handled only by Xist. The day focuses on the extensive options available in Xist and how you can use these methods effectively to solve several example problems. You will leave the class knowing how to take full advantage of the features this robust tool offers.

Key Topics

  • Overview of Xist capabilities and applications
  • Geometry input for shell-and-tube heat exchangers
  • Process specifications for rating, simulation, and design
  • Guidelines for specifying fluid properties
  • Introduction to vibration analysis

Suggested Participants

Designers of shell-and-tube heat exchangers and process engineers who evaluate their performance


Currently Scheduled


Upcoming Instructors

  • Andy Mountford


  • Senior Consulting Engineer, Technical Services and Sales, provides technical support and training for HTRI. He earned a BSc and MSc in Chemistry and a PhD in Organometallic and Materials Chemistry from the University of East Anglia, Norwich, UK. During his tenure there, he conducted research at Wolfson Laboratory for Materials and Catalysis. He previously held the position of Thermal Design Supervisor at Tecnicas Reunidas in Madrid, Spain, gaining valuable experience using HTRI methods and software. Mountford oversaw the development of several high-profile PWR and BWR nuclear plant projects, as well as gained valuable experience in the thermohydraulic design of heat transfer equipment for the petrochemical and nitric acid/nitrates industries. His experience in using HTRI Xchanger Suite makes him uniquely qualified to bring an end-user’s perspective to the HTRI training program and to share techniques for effectively working with the software.


  • Patrick S. Redmill


  • Senior Engineer, Software Development, graduated with a BS in Chemical Engineering from Auburn University, Auburn, Alabama, USA, and then earned his PhD in Chemical Engineering from Vanderbilt University, Nashville, Tennessee, USA. While at Vanderbilt, he worked as a lab instructor and lecturer in the summer Pre-Engineering Program. His fields of specialization include large-scale scientific computation and molecular dynamics simulation. Redmill joined HTRI after working as a Software Developer on ProMax® at Bryan Research & Engineering, Bryan, Texas, USA. At HTRI, he has worked on updating the Xchanger Suite 7 online help and on maintaining Xist and Xace calculation engines. Redmill is currently evaluating heat transfer and pressure drop correlations for the next version of Xchanger Suite.


  • S. Greg Starks


  • Director of Sales, Americas, graduated with a BS in Mechanical Engineering from Texas A&M University, College Station, Texas, USA. While working at the Shuttle Support Thermal Control Systems Analysis Group of Rockwell International, Houston, Texas, he performed thermal analyses for the space shuttle and developed geometry models for the shuttle/space station. From 1994 – 1999, Starks was employed at HTRI, developing calculation engines for our software as well as a quality control database to track program changes. He then moved to Austin, Texas, to work as the Software Engineering Manager for Tanisys Technology, Inc., a supplier of automated test equipment for semiconductor memory technologies. When he rejoined HTRI, Starks was responsible for enhancements to the Xist calculation engine. He now leads sales efforts in the United States and Canada and assists with HTRI’s training initiatives.


  • Hans Zettler


  • Vice President, Sales, EMEA, joined HTRI while completing his PhD in Chemical Engineering at the University of Surrey, Guildford, UK. His doctoral work focused on fouling and design of compact heat exchangers. He also possesses a mechanical engineering degree (Dipl.-Ing.) from the Technical University Karlsruhe, Germany. Zettler completed multiple internships in industry throughout Europe while pursuing his education. Zettler is responsible for Sales in Europe, the Middle East, and Africa. He is a member of the German Engineering Society (VDI), a member of the VDI-GVC Working Party on Heat and Mass Transfer, an associate member of the Institution of Chemical Engineers (IChemE), and a committee member of the Heat Transfer Society, United Kingdom.