Rate, simulate, and design jacketed-pipe (double-pipe) exchangers

Xjpe^® is an incremental program that contains HTRI’s latest pointwise methods based on extensive tubeside condensation, boiling, and single-phase data. The heat transfer and pressure drop correlations are continually improved as a result of our ongoing research.

As a module in Xchanger Suite^®, Xjpe lets you quickly transfer applicable case data to other components like Xist^® or Xhpe^®.

Features

• Provides flexible specification of detailed exchanger geometry.
• 2D incrementation calculates localized profiles for heat transfer and pressure drop.
• Detailed output reports provide overall and localized results.
• Extensive visualization tools show exactly how the exchanger is performing.
• Integrated physical property system eliminates requirement for additional property generation software. Xchanger Suite includes VMGThermo™, an extensive and rigorous fluid physical property generator from Virtual Materials Group, Inc.
• Includes built-in interface to most process simulators and mechanical design software.
• Can be embedded as a unit operation in any process simulator supporting CAPE-OPEN.
• Both input and output can be displayed in multiple unit sets, including user-defined sets. Dynamic display of values in all unit sets.
• Session view allows tracking and retrieval of all runs made during a session.

Geometry Specifications

• Plain and longitudinal-finned tubes
• Twisted tapes and internal microfin tubes
• Horizontal, inclined, and vertical orientations
• Single shell, shells in series, shells in parallel, and series/parallel combinations
• Integrated graphical nozzle location tool

Calculation Features

• Rigorous heat transfer and pressure drop calculations using a 2D incrementation scheme that divides the exchanger into a large number of zones
• Flexible process input allowing specification of known process information (temperature, weight fraction vapor, and/or flowrates) with the program calculating missing information based on energy balance
• Three modes: rating (known duty and geometry), simulation (unknown duty and known geometry), and design (known duty and unknown geometry)
• Optional specification of heat transfer coefficients and safety factors

Design Tools

• Grid design option to vary geometry over user-specified ranges and step sizes
• Design constraints to prevent selection of undesirable designs
• Design view to display all alternative designs and to allow sorting and filtering of results
• Option to create new case from any alternative design

Outputs

• Extensive set of spreadsheet-style output reports can be printed or exported to Microsoft^® Excel^®
• Summary reports with overall results in one or two pages
• Detailed reports for local profiles of all important parameters (temperature, pressure, heat transfer coefficients, heat flux, etc.)
• 2D and 3D scaled drawings provide visual confirmation of exchanger geometry, allowing for quick identification of performance issues
• Flow regime map provides regime visualization for two-phase process streams
• User-defined graphs for easy accessibility