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Enabling Advanced Problem Solving in Spreadsheets with Access
to Physical Property Data
Michael B. Cutlip, Professor of Chemical Engineering, University of Connecticut (speaker)[email protected]
Mordechai Shacham, Professor of Chemical Engineering, Ben-Gurion University of the [email protected]
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This Paper Deals with Increasing Engineering Productivity with a Novel Combination of
Software Tools• Polymath© (advanced problem formulation)• Excel™ (familiar spreadsheet environment)• Aspen Properties™ Add-In for Excel
(accurate physical property data)
Demonstrate: Engineers and technical personnel at their personal computers can now efficiently solve much more sophisticated problems while calling upon accurate physical property data, all within the friendly spreadsheet environment of Excel.
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A New Paradigm in Desktop Problem SolvingInvolving Polymath, Aspen Properties, and Excel
Provides Advanced Problem Solutions
MathematicalModel
Physical Properties
Solution Algorithm
Documentation Output
Excel Solution
Aspen Properties
Polymath 6.0
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POLYMATH Software PresentsPOLYMATH 6.0
Numerical Computation PackageA Significant New Release
• Extremely Easy-to-Use• Excellent Problem Solving Capabilities• Now Works to Provide Excel Solutions
• Automated Export of Problems to Excel• Enables Stand-Alone Excel Calculations• Provides Differential Equations Solver for Excel• Promotes the Use of Aspen Properties within Excel
Calculations
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POLYMATH 6.0 Professional problem solving capabilities include:
Linear Equations - up to 264 simultaneous equations
Nonlinear Equations - up to 600 simultaneous nonlinear and explicit algebraic equations
Differential Equations - up to 600 simultaneous ordinary differential and explicit algebraic equations
Data analysis and Regression - up to 1000 data points with capabilities for linear, multiple linear, and nonlinear regressions with extensive statistics plus polynomial and spline fitting with interpolation and graphing capabilities
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POLYMATH 6.0 features include:• EASE OF USE WITHOUT ANY PROGRAMMING LANGUAGES
OR CONTROL LANGUAGES TO REMEMBER • STANDARD WINDOWS EDITING • EXTENSIVE USER ALGORITHM SELECTION AND CONTROL • EXECUTION WITH ALL 32-BIT WINDOWS OPERATING
SYSTEMS • COMPATIBILITY WITH PREVIOUS VERSIONS • THREE ON-BOARD UTILITIES: POWERFUL CALCULATOR,
UNIT CONVERTER, AND EXTENSIVE ENGINEERING CONVERSION FACTORS
• EXTENSIVE ON-LINE DOCUMENTATION• AUTOMATIC PROBLEM EXPORT TO EXCEL – EXCEL ADD-IN
FOR DIFFERENTIAL EQUATIONS• MATLAB OUTPUT GIVING ORDERED AND FORMATTED
EQUATIONS
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Demonstration Problem – Cocurrent Operation of a Double Pipe Heat Exchanger
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Some Problem Details – Local Heat Transfer Coefficient
The following equation represents the local heat transfer coefficient where the exponent n = 0.4 for heating and 0.3 for cooling
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Demonstration Problem – Differential Equations for Heat Exchanger
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Demonstration Problem:
Calculate the required length of a concurrent double pipe heat exchanger with cooling water in the shell side and benzene in the tube side. The cooling water is available at 65 °F and has a flow that is three times that of the benzene. The configuration of the heat exchanger is given below:
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Entering the Problem into Polymath - Constant Properties
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Aspen Properties Excel CalculatorBrings Physical Property Data to Excel
Pure component constants (MW, Normal boiling point).
Vapor pressure at a specified temperature
Pure component property at specified temperature and pressure
Mixture properties for a specified mixture at given temperature and pressure
Two and three phase flash, bubble and dew point calculations
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Preparing for Aspen Properties – Building the aprbkp file
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Setting Up Aspen Property Data in an Excel Spreadsheet Using Aspen Properties Add-In for Excel
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Export the Polymath Program to the Open Excel Book with a Single Keypress
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The Polymath Problem is Automatically Exported to a new Excel Worksheet in the open Workbook.
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The Excel Spreadsheet is Ready for Solving Differential Equations
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The Polymath Solution Needs to be Copied into the Aspen Properties Worksheet
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The Physical Property Information Is Copied into the Excel Problem Solution
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The Add-In (Ode_Solver) for Solving Differential Equations is Selected and Initialized
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The Report of the Differential Equation Solution is Automatically Generated on a new Worksheet
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A Graph can be Generated on the Report Worksheet
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SUMMARY - A New Paradigm in Desktop Problem Solving Involving Polymath, Aspen Properties, and Excel
Provides Advanced Problem Solutions in Excel
MathematicalModel
Physical Properties
Solution Algorithm
Documentation Output
Excel Solution
Aspen Properties
Polymath 6.0
![Page 25: Enabling Advanced Problem Solving in Spreadsheets with ......• Aspen Properties Add-In for Excel (accurate physical property data) Demonstrate: Engineers and technical personnel](https://reader033.vdocument.in/reader033/viewer/2022051604/6000e51df1406c539b4bdbe3/html5/thumbnails/25.jpg)
Engineers and technical personnel at their personal computers can now efficiently solve much more sophisticated problems on a personal computer while calling upon accurate physical property data, all within a friendly spreadsheet environment.Software:
• Aspen Properties is a product of AspenTechhttp://www.aspentech.com/
• Excel is a product of Microsoft Corporationhttp://www.microsoft.com/
• Polymath is a product of Polymath Softwarehttp:// www.polymath-software.com