FRI的操作说明

F.R.I. TRAY RATING PROGRAMREVISION 1.0May, 2002OVERVIEWRevision 1.0 of the F.R.I. Tray Rating Program is a standalone program, which runs under Windows 98/2000/NT operating system. The program is used to evaluate and rate baffle, dualflow, sieve, and valve trays using F.R.I. correlations. For baffle trays, system limit, jet flooding capacity and pressure drop is evaluated. For the dualflow trays in addition to the system limit and the jet flooding capacity, the efficiency is calculated using two film and vapor density methods.For sieve and valve trays, the program calculates the hydraulics performance that includes the system limit, jet flooding, downcomer backup, and pressure drop. For sieve trays, the program can also calculate entrainment, weeping and efficiency using variety of the F.R.I. correlations. F.R.I. has not developed any correlation for the entrainment, weeping or efficiency of the valve trays. In the minimum input mode, the program calculates and displays the dimensions of the sieve and valve trays using a few specified dimensions and geometric relationships. The program handles 1-pass, 2-pass, 3-pass, and 4-pass sieve and valve trays. For 3-pass and 4-pass trays, the program has automatic hydraulic balancing with and without vapor tunnel in the off-center downcomer. In such cases, it calculates dimensions for either equal bubbling area or equal flow path length trays. The downcomer may be straight, sloped, semi-sloped or stepped. There are options for seal pan, swept-back weir and inlet weirs. Both US engineering and Metric units may be used for either input or output; the program has an automatic unit conversion feature.A Fortran Dynamic Link Library (Tray01.dll) and two visual basic modules perform the calculation and formatting of the input and output. The program uses various F.R.I. correlations to calculate:1. System Limit (all trays)2. Jet Flooding (all trays)3. Downcomer Backup (sieve and valve)4. Pressure Drop (all trays)5. Entrainment (sieve)6. Weeping (sieve)7. EfficiencyThe user has the option of specifying the correlations to be used and a few default values by editing an ini file (Tray01.ini). There are also options to print, print preview, export to an Excel or a tab delimited file for both the input and output results. The program warns the user for inconsistent entries, and the missing required input data on the status bar. No calculation is done if the required inputs have not been entered. However, the program calculates a few physical properties for vapor and liquid based on default values if efficiency calculation has been requested.INSTALLATIONTo install Tray1.0 on your system, place the CD-ROM in the drive. From Windows Explorer locate your CD-ROM and double click on it to display the files on the CD-ROM. If the operating system recognizes Autorun file, it would automatically install the program once the program CD has been inserted in the CD ROM drive; otherwise, click on FRITray.exe to start the installation process. You may also install the program by clicking on Start button in the Windows status bar and selecting the Run option form the displayed menu, then typing CD-ROM drive name and FRITray in the command line (ex. D:\FRITray), or click Windows Explorer to locate the FRITray.exe file. Click OK or press the Return key to begin the installation. At this point, you may get a setup warning indicating some system files are out of date on your system. Click OK if you would like the setup to update these files. You will need to restart Windows before you can run the installation program again. Click Cancel to exit setup without updating your system files.To download the program from the F.R.I. homepage use the following procedure:1. Open your Internet browser.2. Type in as the URL address and press Enter.3. Click on Member Company Access and type your User Name and Password and click onOK.4. Under the Password Protected area, on the left side of your screen, click on Programs.5. Click on F.R.I. Tray Rating Program Revision 1.0(Windows 95/98/NT) May 2002.6. Enter your User Name and Password for downloading the F.R.I. programs.7. The program FRITray.exe will be downloaded to your default download directory.8. Double Click on FRITray.exe and follow the instructions.After the installation is started, the Program Title and then the Welcome screens will be displayed. Click on Next to proceed to the next step. At this point, the Customer Information screen is displayed with User Name and Organization entries. You may revise and edit the two entries. Click Next to continue to the next screen, which is the Destination Folder. The default directory for the program destination is C:\Program Files\FRI_Rating\Trays\. The program directory can be changed by clicking on the Change. If a non-existing directory is specified, the user is requested to confirm the creation of the new directory. Click on Next to proceed to the Ready to Install the Program screen, which displays a summary of Setup type, Destination Folder and the User Information. You may click on < Back to go back to the previous screens and revise the entries. Otherwise, click on Install to continue the installation.Installshield copies the necessary files to the specified program directory, C:\Windows and C:\Windows\System directories. It also creates a program icon, named FRI Tray Rating, on your desktop and registers the program with the Windows Registry. You may be requested to reboot the computer in order to complete the installation process. The destination directory will contain 34 files 14 of which are input example files with a .TR1 and .SV7 file extensions. The program file is FRITray01.exe. There are 13 drawing files with a .jpg extension. Tray01_Hlp.doc is this file, which is in Microsoft Word 6.0/95 format.The standard input files have .TR1 extensions, may be opened, and edited using Notepad. Double clicking any of the input files results in running FRITray01.exe with automatic loading of the data from the input file. The input files handle one process stream with four devices. Whenever an input file with extension .TR1 is double clicked, the program is opened for the device that the file was saved for. Thus if a user runs a case with a sieve tray, then switches to baffle tray and saves the file, the next time the saved input file is opened, it opens in baffle tray section. There are four example input data files with the extension .TR1. These are Baffle.TR1, Dualflow.TR1, Sieve.TR1, and Valve.TR1. The name is an indication of which device was rated last, when the example input file was saved. There are also 11 example cases for sieve tray input data file. The calling convention for the sieve tray example files with extension .SV7is XpassY.SV7. The prefix, X, is a number ranging from 1 to 4 indicating number of passes. The postfix Y may be NH,which means the example case is using the Consistent Hydraulics correlations, Met indicating Metric units or Min, which means the case is a Minimum input example. The Dynamic Link Library Tray01.dll, which resides in C:\Windows\System directory or an equivalent, is a library that in addition to having the various correlations for all trays, it contains all the geometric calculations and hydraulic balancing for 3-pass and 4-pass sieve and valve trays.Tray01.iniThis is an initialization (ini) file containing default values for certain variables and correlations. This file is not expected to be changed or edited on daily basis. The file is usually edited after the initial installation, mainly changing the input and output units according to the company standard. The file may be edited using Notepad. There is a description line before each entry indicating the acceptable values.Revision 1.0 of the F.R.I. Tray Rating program contains the following items in the Tray01.ini with the default values in parentheses:1. [FRITray01] version number to indicate the input file format for backward compatibility2. Input units 0 = US Engineering, 1 = MetricInUnits = (0)3. Output units 0 = US Engineering, 1 = MetricOutUnits = (0)4. Target Jet Flood Confidence Limit (for sieve and valve trays)JetfldConLmt = (95.0)5. Target Downcomer Confidence Limit (applicable to sieve and valve trays onlyDCFldConLmt=(98.0)6. System Limit 0=No 1=TR34, 2=TR125s, 3=TR136 (all trays)SysLimit = (3)7. Jet Flood 0=No, 1=TR62, 2=TR 112, 3=TR 138 (all trays)Jetflood=(3)8. Downcomer flood 0=No, 1=TR 64, 2=TR101, 3=TR123 (sieve and valve trays only)DCFlood=(3)9. Pressure drop 0=No, 1=TR 88, 2=TR 119 (all trays)PressDrop = (2)10. Entrainment 0=No, 1=TR 82, 2=TR 112, 3=TR 138 (sieve tray only)Entrainment =(3)11. Weeping correlation 0=No, 1=TR 86, 2=TR 119 (sieve tray only)Weeping = (2)12. Efficiency correlation 0=No, 1=TR 79, 2=TR 126 and TR 128 ( sieve trays only)Efficiency =(2)13. Consistent Hydraulics Package 0=No, 1=TR119, and TR 123NewHydraulic=(1)14. Hole Edge facing vapor flow 0=Sharp, 1=Smooth (dualflow and sieve trays only)HoleEdge=(0)15. Specified Entrainment fraction (sieve tray only)SpecEntrFrac=(0.250)16. Specified Weep Fraction (sieve tray only)SpecWeepFrac=(0.150)NOTE: The user can set the correlation ID number, by editing the input data file using Notepad or any other word processor. The specified correlations, set in an input data file, must be consistent with one another. For example, for a sieve or a valve tray, one cannot select the Consistent Hydraulic package and specify TR 88 for the pressure drop correlation. The program checks for such inconsistencies and resets the correlations on a consistent basis, the user is warned about the correlation changes. If the user has setthe correlation ID numbers in Tray.ini to an inconsistent basis after the initial installation, the program warns the user about the inconsistencies and takes corrective action for the case. However, the values in the ini file are not changed. It is suggested that for such cases the user revise Tray01.ini immediately, and select the correlations on a consistent basis. Since the 3-pass and 4-pass sieve and valve trays must go through hydraulic tray balancing, if the required correlations (TR 119 &TR 123 for the consistent hydraulics package and TR 64 & TR 88 for previous correlations) ID have been set to 0, the program warns the user and selects the consistent correlations. If an input file is opened, which has different input and output units and different correlation from the Tray01.ini defaults, it will over write the values of the .ini file.RUNNING THE PROGRAMTo rate a tray using the F.R.I. Tray Rating Program Revision 1.0, double click either on FRITray01 icon in the directory where you installed the program or on the icon, which has been created on your desktop. This opens the Device Selection Form, shown in Figure 1. The form consists of five radio buttons, one of which (Bubble Cap) is disabled. It is intended to add the bubble cap tray rating in the future revisions of the program. The default tray type selection is Sieve, the user may select other devices by clicking on the enabled radio buttons, pressing and holding down Alt and the underlined letter combination, or using Arrow Up or Arrow Down keys. The user may terminate the program by clicking on the Exit button, or pressing Alt+x keys simultaneously. Once a device is selected, the user clicks on the Next button to proceed to the next step. The program opens a tab-formatted form with several buttons and a main menu bar.Figure 1. Device Selection FormSIEVE AND V ALVE TRAYSThe menu items and the displayed buttons depend on the selected device. The sieve and valve trays have many shared tabs and buttons. Figure 2 shows the form for the selection of the sieve tray menu option. The main menu items are File, Sieve, Change Device, and Help. There are two buttons at the top labeled Input and Output. The Output button is disabled before any calculation is performed. There are six tabs for input data labeled Title, Settings, Process, Sieve Tray, Downcomers, and Weir & Seal Pans. The user either enters the input data in the input boxes or reads the data from a previously saved data file. There are four buttons below the tab strip, which are labeled Verify, Cancel, Clear, and Calculate. There is a status bar at the bottom of the form, which gives a brief instruction for each input entry. The user has the option of pressing F1 function key to get more detailed information and help instructions about the particular entry point. Once all the required input have been entered and the user is satisfied with the entries, clicks on Verify to indicate acceptance of all entries. Initially only Verify and Clear are enabled, and Cancel and Calculate are disabled. If Clear is clicked, Cancel becomes enabled which undoes the action of the Clear button. When sufficient data has been entered, clicking Verify enables Calculate; otherwise, Calculate remains disabled. In case of missing input data, the status bardisplays a red colored text indicating the required input data. If there are several input data missing, the program displays their requirement one at a time; i.e., once the first missing data is entered and Verify button is pressed, the program displays on the status bar the next missing data if any.Figure 2. Input Form for Sieve TrayWhen Calculate is enabled, it can be clicked and the program will proceed with the calculations. If there are no fatal errors in the entries, the input tabs become hidden and seven output tabs are displayed. At thispoint Output button becomes enabled. Before any change is made to any input data, one can switch between theinput and output tab by clicking on Input and Output respectively. If any input is changed and Verify is clicked, Output becomes disabled and one must go through a calculation stage before the output tabs become available again. Figure 3 shows the Output tabs. The output tabs are Output Summary; Jet Flood; Downcomer Flood; PD, Entrain, Weep; Efficiency; Safety Factors/Error messages; and output details. In addition to the input and output tabs, there is a hidden tab which is labeled preview tab. This tab becomes visible whenever a user selects Preview option from the Print menu under File option. Clicking on any other tab, results in hiding the Preview tab. When the output tabs are visible, all four buttons below the tab strip are disabled. The title bar includes an icon and path to the input data file. For aMay, 2002 Page 10New case the file name is Untitled. Once the input data are saved in a directory, the saved name is displayed in the title bar.Input Tabs - Following is a brief description of the input tabs:Title - Figure 4 shows the Title tab, which is one of the shared tabs among all the devices. This tab contains three entries:Figure 3. Output Tabs1. Case I.D. Number - a combination of alphanumeric identifying the case.2. Case Title - a one-line description of the case title that is part of the header of the printedinput or output.3. Case Description - a scrollable window containing a few lines of notes applicable to thecase. The notes are saved as part of the input data file, and partially are printed when theinput is printed.It must be noted that pressing the enter key results in cursor movement from one input box to the next, similar to pressing the tab key; the exception being the Case Description box which results in introducing a line feed and Carriage return action. However, if one presses tab when the user is in the Case Description box the cursor moves to the case I.D. number box.Settings - Figure 5 displays the Settings tab. This tab is shared between the sieve and valve trays. Most entries in this tab are read from Tray01.ini, however the user has the option to over write some of the entries.1. Input Units - A radio selection box that one can use by pressing the arrow keys or the left mouseFigure 4. Title Tabbutton to select either US engineering or Metric units. The input units and values are automatically converted once the units are changed.2. Output Units - Similar to the Input Units radio selection box except it is applied to the output. If the Output Units are changed before any calculation is made, once the Calculate button is clicked the results would be displayed in the selected units. If the Output Units are changed after the calculations have been made, all the units and output are converted to the new units automatically.3. Target Confidence Limit - there are two fields to specify, the confidence limit for the Jet-Flood and the Downcomer Flood. The two values are read from ini file for each new case. The user has the option to over write both values.4. Calculation Options- There are check boxes for Efficiency, Minimum Input and Display Geometry in this frame. If an efficiency calculation is selected, the selected efficiencycorrelation in the ini file is displayed in the F.R.I. Correlations frame. If no efficiency correlation is specified in the ini file, the user is asked whether to use TR 126 or TR 79 depending on the specification of the Consistent Hydraulics package by the user or not. If the user does not accept the acceptable efficiency correlation, the Efficiency calculationFigure 5. Settings Tabcheck box is de-selected. It should also be noted that the auxiliary properties frame in the Process tab is disabled if no efficiency calculation is to be performed. In the case of an efficiency calculation request, if some of the auxiliary properties have not been specified, the program will generate default values using the other specified physical properties. Since F.R.I. has not developed a correlation for the valve tray efficiency, this check box is disabled and no efficiency correlation is displayed in the F.R.I. Correlations frame.Selecting the Minimum Input check box disables some sieve and valve tray input dimensions. Once the calculate button is pressed, all the tray dimensions are calculated and placed in the proper input fields. If the user needs to revise some of the input dimensions, the Minimum Input check box can be deselected, which leaves the numbers in their respective input fields and enables data entry in the previously disabled fields. One must note that in addition to each panel dimension, the user cannot enter any value in Vertical height above and below Slope, DC Escape Area, Outlet Weir Length, and thedimensions for a Seal Pan. For 3- pass and 4-pass cases, Tray Panel Type frame becomes enabled. The user must specify whether the panels are Equal Bubbling Area (default) or Equal Flow Path length tray, giving the user the option to change the calculated numbers. It is recommended to use this procedure if not all the dimensions for the tray are known.Display Geometry is another option to give the user the ability to calculate the tray dimensions without going through hydraulic and efficiency calculations. The tray geometries are calculated and displayed with a minimum number of entries. Figure 6 shows the Settings tab with the Display Geometry check box being selected. Once the Display Geometry check box is selected, the Minimum Input check box is also automatically selected. Deselecting the Minimum Input check box also results in the automatic de-selection of the Display Geometry. It should also be noted that the label of the Calculate button is changed to Geometry, indicating a different type of calculation. Once the tray dimensions are calculated and displayed, the Geometry button caption is switched back to Calculate. The Display Geometry check box is de-selected after the calculation has been made.If the user enters Diameter, Top and Bottom Fractional downcomer Areas or Widths, the program calculates bubbling area, free area, flow path length and width. It also calculates and displays the top and the bottom downcomer widths or fractional area depending which one has been specified in the input. If swept-back weir is not specified, the program shows the outlet weir length for each panel. For sieve tray, if the Average % Hole Area (in the Tray Geometry frame) is specified, the program calculates the hole area for each panel assuming they have the same percent hole area. If the Hole Diameter is entered, the number of holes is also calculated. For valve tray, if the total number of valves or the valve density per unit area is specified, the program calculates and displays the number of valves for each panel. Specifying the downcomer Clearance results in the calculation of downcomer escape area using the specified downcomer clearance and the calculated weir length.Figure 6. Display Geometry Check Box5. Entrainment and Weep Spec (Sieve Tray only)- There are two fields, one for entrainment and one for weep fraction specification. These values are initially read from the ini file. If no value has been specified in the ini file, both fields will be blank. The user has the option of over writing both fields. Once a value is specified, the program calculated the vapor rates required to generate the fraction entrainment or weeping specified in this frame. No such calculation is performed if the fields are blank. Note these entries are blank and disabled for valve trays.6. F.R.I. Correlations - All the fields in this frame are disabled. The user has no option to change the specified correlation within the program. The only way the selected correlations can be changed is to edit the ini file. The only exception is the efficiency, if no efficiency correlation has been specified in the ini file. Selecting the Efficiency calculation in such a case, results in display of a dialog box indicating a choice between TR 126 or TR 79 (depending on the selection of Consistent Hydraulics or not in the ini file) efficiency calculation or canceling the efficiency calculation all together. The daily user is not supposed to change the correlations used in the calculations. These are selected by each member company and the IT manager or the individual in charge of the maintenance of the F.R.I. program; the only persons who should have permission to edit the ini file and set the default values.Since the valve tray correlations are based on TR 119, TR 123, TR 136, and TR 138, the user does not get a choice to specify the valve tray correlations in the ini file. Only sieve tray correlations are displayed in the ini file. Changing the device type results in the display of the applicable correlations in the F.R.I. Correlations fields.It should be mentioned that the correlations saved with an individual case, take priority over the default correlations saved in the ini file. One may choose to edit a saved input file, using the Notepad, to change the correlations used by that case.For valve trays, there is a red note indicating that F.R.I. has not developed any correlations for the entrainment, weeping and the efficiency of the valve trays at the time of issuing the program to the membership.Process - Figure 7 displays the process tab, which is shared among all devices. Thus, the Tray01 program is a single process multiple device program.There are three input frames in the process tab: vapor, liquid and the auxiliary properties. Theauxiliary properties frame is disabled for baffle, valve and for a sieve tray for which no efficiency calculation is to be performed. The frame is always enabled for dualflow trays.1. Vapor - This frame contains the vapor phase process conditions. It includes entry fields for the mass flow rate and density, which are required for all hydraulic calculations, and vapor viscosity and molecular weight. Molecular weight is an optional entry and is set equal to the liquid phase molecular weight, if it is left blank and a value is specified for the liquid molecular weight. The molecular weights are used to calculate the molar rates, Lambda, and m-value if they have not been specified and are needed for the efficiency calculations. For baffle tray, the vapor viscosity field is disabled because its value is not needed for any baffle tray correlations.Figure 7. Process Tab2. Liquid- This frame contains the liquid phase process conditions. The frame includes fields for the liquid mass flow rate and density that are required for all hydraulic calculations, liquidviscosity, surface tension and the molecular weight. Liquid molecular weight is an optional entry and set equal to the vapor molecular weight if no value is specified for it. For baffle tray, the liquid viscosity field is disabled because its value is not needed for any baffle tray correlations.3. Auxiliary Properties - This frame contains those physical properties, which are used in the efficiency calculations. If no efficiency calculation is requested this frame is disabled. If some of the input data in this frame are missing, the program uses defaults and calculates the remaining properties. The default and the calculated values in the auxiliary properties frame are displayed in green. The auxiliary variables include the vapor and the liquid diffusivities and Schmidt number, m-values and Lambda. Default values used are:Vapor Viscosity = 0.01 CPVapor Schmidt Number = 0.8Liquid Schmidt Number =515.3 (Liquid Viscosity) 1.5Lambda = 1One must note that deselecting the efficiency calculation, results in disabling the auxiliary properties frame and hiding the entered or calculated values in that frame.Sieve Tray - Figure 8 shows the sieve tray tab. There are two frames in this tab: one for TrayFigure 8. Sieve Tray TabGeometry and one for Panel Geometry. Tray Geometry contains fields for Diameter, Tray Spacing, Deck Thickness, Hole Diameter, Average % Hole Area, and Hole Edge facing Vapor, which may be sharp or smooth. For a multi-panel tray, it is assumed all panels have the same deck thickness, hole diameter and hole edge-facing vapor. Once a number is entered in percent hole area, the same number is displayed for all panels. However, the user has the option to over write the displayed numbers. After the Verify button is clicked, the program takes the average of % hole area from all the panels and corrects the average % hole area in the Tray Geometry frame. When a value is entered for the Average % Hole Area in the Tray Panel, the program checks for the value of the Percent Hole Area for each panel. If there is no value, the average value is placed in the blank field; otherwise, the value is not changed.If a Minimum Input case has been specified, the Panel Geometry frame is disabled and no field is available for data entry. For the cases that the Minimum Input check box (in the Settings tab) has not been checked, one or more panels and their respective field are enabled. The number of enabled panels is the same as the number of passes specified in the Settings tab. Each panel in the Panel Geometry frame includes Bubbling Area, Free Area, Flow Path Length, Flow Path Width, Percent Hole Area, HoleArea, and Number of Holes. Percent Hole area, Hole Area and Number of Holes are interrelated.Specifying one of these variables, provided the Bubbling Area has been specified, fixes the other two values. Black color indicates which variable has been specified and blue color shows the calculated values. The flow path width is defined as an arithmetic average of wall-to-wall distance at the inlet, center and outlet of panel. However, when the value is calculated by the program, the actual value is calculated by dividing the panel area by the flow path length.Downcomers (Sieve and Valve Trays only)- The program handles Straight, Sloped, Semi-Sloped, and Stepped downcomers. Figure 9displays the Downcome r tab for a 3-pass example case.There are four downcomer columns available for the data entry. The first column is for the Side downcomer that is always enabled. The second is for the Center downcomer, which is enabled for 2-pass and 4-pass trays only. The third and the fourth columns are for the Off-Center downcomer that is enabled just for 3-pass and 4-pass trays. The third column is for the side of the off-center downcomer that is the farthest away to the tray center. The additional dimensions for the side of the off-center downcomer nearest to the tray center are specified in the fourth column.Figure 9. Downcomer TabFor each downcomer, one can specify the Width or the Fractional Area at the top or bottom. If。