HTRI offers free hour-long webinars to its members. Live webinars include an opportunity for a question and answer session at the conclusion of each session.
| TechTip: Customized Heat Transfer and Pressure Drop Calculations in HTRI Xchanger Suite | |
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January 26, 2012, 09:00 AM |
Xchanger Suite provides sophisticated modeling capabilities for a wide range of heat exchangers. Occasionally, you may need to customize the software to extend its capabilities. In this webinar, we discuss the reasons for using non-standard solutions and explore the range of customization options available. Additionally, using an example case, we review and demonstrate the use of f- and j-factors to specify pressure drop and heat transfer correlations. |
Recordings do not include a question answer session, but do include the entirety of the webinar presentation. To view these recordings, you will need Adobe Flash Player and e-Library.
If you have technical issues viewing the recordings, please contact HTRI Technical Support.
| Beyond the Basics | |
| Beyond the Basics: Building Your First Case in Xvib | |
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June 2, 2011 |
This webinar describes the capabilities of Xvib and identifies reasons why you would want to use Xvib to carry out a vibration analysis. Other topics included in this webinar are the Xvib input panels and key features of the software, a demonstration on how to build an Xvib case from an existing Xist case and a discussion of the differences between Xvib and Xist. |
| Beyond the Basics: Interpreting Xfh Output | |
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May 13, 2011 |
Xfh has a total of 37 output reports, and today we will look at key numbers on six of these reports (output summary, cylindrical energy balance, stack monitor, convection summary, cylindrical firebox monitor, and combustion streams) using an example we modified from the Xfh training workshop. We discuss the following values, which can be located in these reports: efficiency, setting losses, process outlet conditions, bridgewall temperature, metal temperatures, acid/water dewpoints, film boiling in tubes and draft. |
| Beyond the Basics: Building Your First Case in Xist® | |
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March 30, 2010 |
¿Estás preparado para construir tu primer caso en Xist? Mediante este webinar se muestra la interfaz de Xist y cómo navegar por la misma. Se revela cómo utilizar las opciones disponibles para modelar un intercambiador, cómo determinar qué versión de Xist se está utilizando y cómo acceder a la sección de ayuda. Tras la exposición inicial sobre la interfaz de Xist, se trabajará con un ejemplo de hoja de datos tipo TEMA de información limitada para así diseñar, ejecutar y solucionar problemas en Xist. |
| Beyond the Basics: Understanding Fluid Property Options | |
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November 18, 2010 |
Specification of fluid properties is a crucial part of the design process. This webinar provides an overview of the fluid property specification process in Xchanger Suite. The webinar includes a discussion of HTRI recommendations, “tech tips,” and a cursory discussion of special topics in fluid properties. The special topics include flash types, immiscible fluids, and supercritical fluids. |
| Beyond the Basics: Building Your First Case in Xfh® | |
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October 13, 2010 |
The goal of this webinar is to provide a new Xfh user with the information they will need to build their first case in Xfh. The webinar discusses the capabilities of Xfh, including an overview of combustion, the radiant section, the convection section, the stack, and API 530 tube design. Next, we outline how to input values for the cylindrical heater multi-zone model by transferring input from specification sheets and drawings. |
| Beyond the Basics: Debugging Fatal Errors in Xist® | |
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August 19, 2010 |
The error messages generated by Xist are helpful because they identify either the root cause or symptoms of the problems with your case. This webinar discusses the types of errors, analyzes four examples of fatal errors, and provides guidelines for preventing and debugging fatal errors in Xist. Important concepts in this webinar include: data check and runtime messages can be informative, warning, or fatal, use Xist resources (help files, FAQs, Tech Tips) to prevent fatal error messages, and use engineering expertise to determine root cause of problems that fatal error messages do not clearly identify. |
| Beyond the Basics: Rating, Simulation, or Design? Understanding Case Modes in HTRI Xchanger Suite® | |
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May 20, 2010 |
Most Xchanger Suite modules allow you to run an exchanger in three different modes--rating, simulation, and design. This webinar discusses each type in terms of how they differ, how to specify each type and reasons why each type is useful. |
| Beyond the Basics: Building Your First Case in Xist® | |
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March 30, 2010 |
Are you ready to build your first case in Xist? This webinar discusses the Xist interface, including how to navigate, how to utilize the options you have to model your exchanger, how to determine which version of Xist you are running, and how to get help. After the initial discussion on the Xist interface, the webinar works through an example using a TEMA datasheet with limited process information to input, run, and troubleshoot the case in Xist. |
| Is My Design OK? | |
| Is My Design OK? Temperature Efficiency in Design | |
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November 10, 2011 |
Design software packages use incremental models to correlate the performance of heat exchanger geometry and fluid heat release curves; however, the heat exchanger thermal efficiency is often lost in the process. Thermal efficiency enables designers to select appropriate heat exchanger geometries with respect to heat release curves. It also helps them identify plant "bottleneck" exchangers, indicating the replacement bundle configurations that could yield the highest performance improvement. This webinar explores the thermal efficiency of various shell-and-tube geometries and provides methods to determine and increase thermal efficiency for specific cases. |
| Is My Design OK? Thermosiphon Modeling in Xist | |
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March 3, 2011 |
To help you better use Xist to model thermosiphon reboilers, this webinar begins with an overview of thermosiphon reboiler operations. Next, we discuss design rules-of-thumb and Xist input guidelines, including reboiler inputs and piping. The webinar concludes with helpful hints for interpreting results by focusing on troubleshooting error messages. |
| Is My Design OK? Shell Selection | |
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October 14, 2010 |
Inferior thermal design often results from the selection of incorrect shell type. This webinar reviews TEMA shell types, describes the factors that impact shell selection, and discusses the advantages/disadvantages of TEMA shell types. Using Xist®, we compare the results of shell selection on a single-phase liquid, low temperature approach, a once-through reboiler, and a vacuum mixture condenser. |
| Is My Design OK? Baffled by Heat Exchanger Design | |
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July 15, 2010 |
Throughout the webinar, we examine standard TEMA and Non-TEMA baffle types, Xist examples to illustrate how different baffles affect heat exchanger performance, and rules of thumb concerning proper design with respect to baffle cut, spacing, and orientation. Finally, we provide a summary of the performance characteristics of the different baffle types, to guide effective shell-and-tube heat exchanger design. Please note, a handout of relevant literature, performance summaries, and Xist examples is included for this webinar. |
| Is My Design OK? Understanding Tube Layout | |
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April 22, 2010 |
This webinar discusses the key issues you should address to achieve successful tube layout in a heat exchanger. After reviewing methods to maximize the tubecount in the shell, such as the selection of an effective tube layout approach and knowing when to replace or remove tubes, we go on to discuss how to identify the best methods for avoiding tube removal/replacing tubes and methods to use for determining how to improve thermal performance after tube removal. |
| Is My Design OK? Shellside Condenser Design | |
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February 18, 2010 |
A concise review of shellside condenser design, this webinar begins with a discussion of the fundamentals of shellside condensation, including film condensation and pressure drop. The webinar uses a vertical G-shell condenser model as a sample case to dicuss the objectives of condenser design. |
| Research Updates | |
| Research Update: Condensation in Welded Plate Exchangers | |
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December 15, 2012, 09:00 AM |
Plate heat exchangers (PHEs) are well suited for applications that require compactness, low weight, and high efficiency. Traditional gasket-type PHEs are limited to a low range of pressures and temperatures. When operating pressures and temperatures exceed the range of a traditional gasket PHE, a welded-plate design is sometimes used. This webinar discusses HTRI’s condensation data and methods, as well as alternative literature models. Limitations of these methods are shown and recommendations for future work are discussed. |
| Research Update: Non-Newtonian Flows in Heat Exchangers | |
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May 24, 2011 |
HTRI has begun a research program dedicated to non-Newtonian flows. In order to discuss the plans for this research program, this webinar reviews the following items: the definition non-Newtonian fluids, the use apparent viscosity, focusing on power law fluids, how non-Newtonian flows affect pressure drop and heat transfer in heat exchangers and the capabilities of Xphe with regard to non-Newtonian fluids. The webinar concludes by reviewing the future of the non-Newtonian flow research program at HTRI. |
| Research Update: Crude Oil Fouling | |
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April 28, 2011 |
We begin this webinar with a definition of crude oil fouling and the difference between crude oil fouling and other types of fouling mechanisms. Following this review, we discuss fouling research at HTRI by describing the High Temperature Fouling Unit (HTFU), the research testing that we conduct, and the prediction models that are in development. |
| TechTips | |
| TechTip: Modeling Horizontal Thermosiphon Oil Coolers | |
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September 8, 2011 |
Thermosiphons are used in distillation columns, solar water heaters, refrigeration, and many other applications. This webinar focuses on one type: cooling screw compressor oil using a thermosiphon. It also includes a discussion of design and operation guidance available in open literature. The session ends with a demonstration of how Xist models horizontal thermosiphon oil coolers. |
| TechTip: Optimizing Tube Flow – Mechanisms and Devices | |
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July 21, 2011 |
Optimizing tube flow is a difficult quest if you do not understand the mechanisms by which tube inserts work. This webinar will describe the different types of tube inserts, explain how these different inserts work, help you determine which tube inserts are the best fit for your application, and discuss some of the pitfalls of tube inserts. |
| TechTip: Improvements in Specifying EMbaffles® | |
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February 24, 2011 |
HTRI continues to improve EMbaffle implementation in Xist. In this webinar specifically geared toward the use of EMbaffles in Xist, we describe the technology, discuss how to specify EMbaffle in Xist, and explain the EMbaffle-related improvements in Service Pack 3. We conclude the webinar by demonstrating input options for E- and F-shells in Xist. |
| TechTip: Impact of HTRI Xchanger Suite 6, Service Pack 3 | |
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February 17, 2011 |
Service Pack 3, released in January of 2011, includes a number of improvements for Xchanger Suite. This webinar discusses a few of these improvements in detail, including the HTRI input translation tool, modifications to heat transfer coefficients, changes to reports, and updates for kettle reboilers, continuous fins, and EMbaffles®. |
| TechTip: UniSim® Feedwater Heater Modeler | |
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January 20, 2011 |
The webinar provides an introduction to feedwater heaters and a demonstration of the UniSim Feedwater Heater program. The introduction discusses the typical steam cycle, performance attributes, operational issues, and geometry of feedwater heaters. The demonstration includes a brief discussion of the UniSim Feedwater Heater program user interface and output results. |
| TechTip: Modeling Flooded Evaporators | |
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December 16, 2010 |
This webinar describes modeling flooded evaporators using Xist®. It reviews HTRI shellside boiling methods and discusses the similarities and differences for modeling kettles, x-shells, and flooded evaporators in Xist®. We use an ammonia chiller case to demonstrate a performance comparison of these three models. |
| TechTip: Kettle Entrainment Prediction (Presented in Chinese) | |
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September 15, 2010 |
After discussing an overview of kettle reboilers and the fundamentals of entrainment, this webinar reviews Xist® input and output as well as design considerations that affect kettle entrainment. By working through an example case, this webinar teaches that accurate prediction of liquid entrainment is crucial for some applications, that liquid carryover depends on many parameters, and that Xist version 6 calculates a more accurate entrainment and provides more options than past versions. |
| TechTip: Modeling A-Frame Condensers | |
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September 13, 2010 |
A-frame condensers can be modeled in Xace® (version 6) by using the workarounds outlined in this webinar. After viewing this webinar, you will be able to describe A-frame geometry and analysis methods. The webinar includes a demonstration of Xace input options and works through two sample cases – a rating without reflux and a simulation with reflux. |
| TechTip: Using HTRI Xchanger Suite® with UniSim Design® | |
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June 29, 2010, September 8, 2010 |
You can obtain properties from UniSim Design® within any module in Xchanger Suite or from UniSim Design® by embedding an Xist model into a UniSim Design® simulation. This webinar demonstrates how to interface between Xchanger Suite and UniSim Design® by installing and registering UniSim Design®, calculating properties, importing streams, and embedding Xist cases. The methods demonstrated are valid for other HYSYS based process simulators, and are not limited to UniSim Design®. |
| TechTip: Impact of HTRI Xchanger Suite® 6, Service Pack 1 | |
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January 28, 2010 |
If you have not investigated the benefits of Service Pack 1, this webinar is for you! The discussion includes a summary of the most siginificant changes such as improvements to unit conversions, continuous fins, VMGThermo™, fired heaters, momentum recovery, Microsoft® Excel®, and the tube layout drawing. |