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Supplemental Cooling Units
Liebert XDO Units. The database includes all available models for 60 Hz and 50 Hz power frequencies.
Liebert XDV Units. The database includes all available models for 60 Hz and 50 Hz power frequencies.
Horizontal (In-row) Coolers. The database includes
Liebert’s XDH20 and XDH32 models, and APC’s InRow RC, InRow RP (both chilled-water and refrigerant cooled), and InRow SC models.
Supplemental cooling units in TileFlow 3.5
Inlet/Outlet Vents on Bounding Walls, Ceiling, No-Flow Regions, and Solid Blocks
You can now specify inlet and outlet openings on
- bounding walls
- ceiling
- faces of above-floor solid blocks
- vertical faces of no-flow regions
At each inlet, you can specify the flow rate in CFM and the temperature of the incoming air. This feature
will allow you to model situations where the cooling air is supplied through overhead ducts or ducts protruding through the perimeter walls. The ability to place these vents on the faces of solid blocks also
allows you to represent upflow CRAC units.
Coupling of Under-Flow and Above-Floor Airflows
TileFlow 3.5 uses an innovative technique to introduce the effect of above-floor pressure distribution on
the flow rates through perforated tiles. In raised-floor data centers where the cooling air is supplied exclusively through perforated tiles, it is often satisfactory to assume that the pressure above the
perforated tiles is uniform. This assumption, which has been validated through numerous measurements, allows the development of an efficient solution procedure for calculation of airflow in such data centers.
The assumption of uniform pressure, however, may not be valid in the presence of strong downflow, created for example by XDO units and overhead supply ducts. To allow for such situations, TileFlow now
estimates the error incurred by the assumption of uniform above-floor pressure in flow rates through
perforated tiles. If this error is large, TileFlow will prompt you to perform a coupled calculation of under-
and above-floor airflows. In many cases, this additional calculation is quick and leads to only a slight increase in the total calculation time.
Modeling of Non-Raised-Floor Data Centers
With the availability of supplemental cooling units and the ability to place inlet/outlet vents on the
perimeter walls, ceiling, and faces of solid blocks and no-flow regions, TileFlow 3.5 can now be used to
model non-raised-floor data centers and data centers that use both under-floor and above-floor cooling air delivery. If the floor layout does not include any active downflow CRAC units, TileFlow automatically
treats the situation as a non-raised floor; in that case, the plenum height, presence of perforated tiles, and under-floor obstructions has no effect on the calculation.
Data center with inlets on the ceiling and outlets on the walls
General
Display Subfloor. This facility allows you to show/hide the subfloor and the perimeter walls below the
raised floor. You can see the underside of the obstructions below the raised floor.
Display Under-Floor Region. This facility allows you to show/hide the entire under-floor region (raised
floor, subfloor, side walls, and under-floor obstructions). By hiding the under-floor region and proper tilting, you can access the underneath surfaces of objects such as XDO units and above-floor solid
objects.
Display Options for Real Ceiling and Bounding Walls. New display options have been added for real ceiling and bounding walls. The available options for ceiling are opaque, translucent, outline, and
invisible. The options for walls are show all walls (front walls translucent), all walls (front walls outline), back walls only, and invisible.
Show Rack Temperature Maps. This feature allows you to display the temperature distribution on
intake face(s) of server racks. Intake faces are the faces through which cooling air is drawn into the rack.
Park Temperature Billboard. This facility allows you to display multiple temperature billboards at one
time.
Traverse Temperature Billboard. This feature allows you to traverse a temperature billboard in a
specific coordinate direction. For example, a temperature billboard for xy plane can be traversed in the vertical direction. You can change the speed of traverse and also make use of pause/resume features.
Single Tool to Rotate Objects. In the previous versions, we had separate tools to rotate CRAC units
and server racks. Now a single tool is used to rotate CRAC units, racks, in-row coolers, XDOs, XDVs, and above-floor solid blocks.
Lifter Handle to Move Objects in the Vertical Direction. The above-floor solid blocks, XDO units, and XDV units now have a lifter handle, which can be used to move these objects in the vertical direction.
Added Functionalities for Above-Floor Solid Blocks. The tool for creating a solid block has been changed to a single-click tool. To place a solid block, click the toolbar button Create a Solid Block, and
click on the desired location on the floor. You can then use the handles to resize the object, use the
mouse to drag the object to the correct location, and use the lifter to move it along the height. Also, you can now rotate a solid block.
White Background for Printing. While printing from within TileFlow, you can choose background color
as white instead of blue.
Click here to see the new features introduced in Version 3.2.
Click here to see the new features introduced in Version 3.0.
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