Tag: TUBE LAYOUT

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Goodbye to bad vibes: A comparison of HTRI's tube vibration analysis tools (Part II)

July 07, 2025

Andy Mountford, Senior Technical Lead, Training Peter Joosten, Manager, Technical Support In a previous article, we reviewed the differences between the Xist® and Xvib® vibration analysis methods for straight-tube heat exchanger configurations. These differences are summarized in the table below. Straight-tube method Xist Xvib Vibration mechanisms analyzed Fluidelastic instability, vortex shedding,...
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• XVIB
• XIST
• VIBRATION
• TUBE LAYOUT
• HEAT EXCHANGER DESIGN

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Training case study: Vibration concern in steam generator unit

May 12, 2025

A TEMA AES exchanger with carbon steel tubes produces 7.5 bar steam on the shell side with a weight fraction vapor of 0.3 at the shell exit (Figure 1). The operator has seen no evidence of tube damage in the operating unit, but the Xist vibration analysis flags fluidelastic instability (FEI)...
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• XVIB
• XIST
• VIBRATION
• TUBE LAYOUT
• CASE STUDY

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TechTip: Tube Layout Design and Customization

August 24, 2017

This webinar discusses the tube layout options in Xchanger Suite® 7. Specifically, we will discuss the different features of the view and edit mode; describe a recommended workflow for Xist®, and review output drawings. Updated for Xchanger Suite 7.3.1....
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• TUBE LAYOUT
• XCHANGER SUITE
• XIST

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TT-17 Tubecount assumptions in Xist

January 26, 2017

Component: Xist Date posted: 25 March 2015 To calculate tubecount, Xist uses different methods based on input selections: Rigorous vs. non-rigorous tubecount If rigorous tubecount is specified on the Tube Geometry panel, Xist generates a tube layout drawing starting at the center of the bundle and placing tubes where it can,...
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• XIST
• TUBE LAYOUT

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TT-8 Model tube vibration in the bundle entrance region with parallel-cut baffles

January 26, 2017

Component: Xist Date posted: 4 November 2008 Date retired: 7 December 2021 Xvib models the vibration potential of a single tube using a rigorous finite element method. It is the most accurate tool available to estimate the potential for tube damage. Using Xchanger Suite 8, you can quickly complete an Xvib model...
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• BAFFLE
• TUBE LAYOUT
• VIBRATION

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Is My Design OK? Floating Head Design and Effects on Tube Layout

January 16, 2017

This webinar will discuss the reasons for using floating heads, the differences between the four types (S, T, P, and W), and the effects of diameter and length on floating head design. As we describe design considerations for each type, we will provide tips and rules-of-thumb for achieving optimal, practical designs....
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• DESIGN
• FLOATING HEAD
• TUBE LAYOUT
• XIST

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