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New Features in TileFlow Version 1.7
Splash Screen
When you
launch TileFlow, you will be greeted with a splash screen, which displays the current version number.
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Distributed Leakage Flow
TileFlow now allows you to specify the area for distributed leakage flow. The leakage airflow and the corresponding cooling capacity are reported in various plots, reports, and dialogs related to results.The
distributed leakage flow refers to the flow rate of cooling air through unmanaged openings scattered throughout the raised floor. It includes, for example, airflow through the seams between the floor panels.
It can also represent, in an approximate manner, airflow through cutouts if these are present on a large number of panels scattered throughout the floor.
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Improved Representation of Flow Resistance of Cutouts
TileFlow now provides two options for specifying the open
area of perforated tiles and cutouts: (a) Perforations, and (b) Large Openings. The first option is appropriate for perforated tiles, which include a large number of small holes; the second option is
appropriate for cutouts, which usually consist of a few large openings. For the latter case, TileFlow now uses an improved formula for the flow resistance, which leads to more accurate results.
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Perforated Tile Style with Known Flow Rate
TileFlow now includes a new type of perforated tile style--Known CFM
--that allows specification of flow rate for a perforated tile. The Knwon CFM style is appropriate for representing fan-assisted perforated tiles and server racks when these devices use powerful fans and,
as a result, deliver a kown flow rate, independent of the local pressure under the raised floor.
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Expanded Database of Perforated Tile Style Database
The database has been expanded to include new styles for cutouts with open area ranging from 5 sq in to 300 sq in.
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Expanded Database of CRAC Unit Style Database
The database now includes Liebert’s Himod and Challenger air-conditioning units.
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Replace Style Command
This new command can be used to replace all occurrences of a specific style (CRAC Unit or Perforated Tile) by another style. You can use this command, for example, to replace a style for a cable cutout
by a style of very small open area, to simulate closing of the specified type of cable cutout.
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Expanded Column/Row Labeling Schemes.
Labeling scheme 3, which follows the sequence A, B, C, ..., Z, AA. BB, CC, ..., ZZ, AAA, BBB, ..., ZZZ, has been extended to include the next sequence AAAA, BBBB,
..., ZZZZ. Now the labeling schemes also allow for negative labels, which can be used to include unlabeled regions near the boundaries of a data center.
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Warnings and Errors Report
This report contains all warning and error messages that appear on the screen. This report can be
printed.
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Utilities Menu
The TileFlow menu bar now includes a new
menu” Utilities. Utilities contains four commands: Use Btu/h, Object Count, Animation Options, and User Comments. In the earlier version, Object count was part of the Floor Design menu and Animation Options
was part of Simulation menu. The remaining commands are new in Version 1.7.
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Choice of Unit for Cooling Capacity
TileFlow now allows you to specify the unit (Watt or Btu/hour) for reporting the cooling capacity in various tables and dialogs. The reports, plots, and text file for Microsoft Excel include cooling
capacity in both these units.
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User Comments
TileFlow now provides a facility (Utilities > User Comments...) for adding comments or notes. The
current filename, date, time, and status of airflow results (available or not) are automatically included with the comment. Thsi facility is useful for keeping a log of the changes in the layout and for making
observations on the results.
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Summary Message
When you give the Calculate Airflow command, the main input details, such as the plenum height, floor
dimensions, distributed leakage area, and the number of CRAC units and perforated tiles are displayed in the summary message. This is useful for a quich check of the problem specification.
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Bar Charts for Cooling Capacity
Bar Chart option is now available for showing the variation of cooling capacity along a row or a
column. These plots show cooling capacity in Btu/h as well as in Watt.
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New File Formats for Saving Plots
TileFlow now gives you four file formats for saving the plots: Windows Bitmap Format (bmp), JPEG format, Portable Network Grapghc (png) format, and Tagged Image Fil Format (tiff). The JPEG files are widely
used on the internet.
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