Group By:
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The grouping list options are provided to display
duct components in the table.
- Duct Section —
Displays the duct components grouped in sections in ascending order. The
collapse/expand arrow icons appears in the leftmost column. The summary row
above each section displays the sort criteria and the section number
(Duct Section:#), where # indicates the section number.
The heading also displays
Summary of Section Loss Coefficients,
that is the sum of section loss coefficients of fittings in the section.
- Fitting No. —
Displays the duct components grouped under fitting numbers in ascending order.
The collapse/expand arrow icon appears in the leftmost column applicable for
entire fitting number list. The summary row above the fittings list shows only
heading of the group by criteria (Fitting No.:#), #
being the identification number of fittings in sequence.
- Type of Fitting —
Displays the duct components based on type of fittings. The table is sorted
based on Type of Fittings column in an alphanumeric order. The summary row
above the fittings list shows only heading of the group by criteria (Type of
Fitting: Name of Fitting), e.g. all damper fittings in entire duct system will
be grouped under the summary head
Type of Fitting: Damper.
- ASHRAE Fitting No. —
Displays the duct components based on Duct Fitting Codes assigned as ASHRAE
Fitting No. The table is sorted based on ASHRAE Fitting No., column in an
alphanumeric order. The summary row above the fittings list shows only heading
of the group by criteria (ASHRAE Fitting No.: Duct Fitting Code), e.g. all
damper fittings in entire duct system will be grouped under the summary head
Type of Fitting: CD9-#.
Note: The ASHRAE
Fitting No. field is set through fittings database during sizing analysis.
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Duct Section
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List the duct section numbers. The section groups
are numbered in ascending order in the direction of flow.
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Fitting No.
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A duct section can have more than one fittings.
These fittings are numbered in order of direction of flow. The
numbers increment with sections.
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Type of Fitting
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Lists the name of the fitting each against the duct
section. Selecting a fitting in this column highlights corresponding duct
element in the geometry. The
opens a comment panel where you can write a comment
about the fitting. The commented cell is indicated with a blue triangular mark
in the top right. These comments are preserved in the system and are useful for
future reference These comments captured and are listed in a column in
applicable reports.
Double-click>Open Fitting
Options opens a panel from where you can toggle On/off
Flow Break
option.
The filter icon below this field can be used to
filter the required fittings.
The "Contains:" field at
icon is used to set a filter for
listing those Type of Fittings.
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ASHRAE Fitting No.
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Lists the code of the fitting each against the duct
section.
Sets the ASHRAE standards notations to duct system
fittings, for example ED1-3, CD9-1, etc. The convention is two letters followed
by two digit numbers separated by a hyphen.
Consider the example:
ER4-1
- The first letter
E denotes fitting function
Exhaust
or Return.
- The second letter
R denotes fitting geometry
Rectangular for a rectangular shape.
- The first digit
4 denotes fitting categoryTransitions.
- The second digit
1 denotes sequential number of such
fittings. (Number greater than 1, say 2 means the system has at least two such
category fittings already in use).
Mouse hover on ASHRAE Fitting No cell pops a tool tip
displaying "Left-click -> Open ASHRAE Fitting TreeView Panel."
ASHRAE
Fitting TreeView Panel allows filtering the ASHRAE codes to make a selection
from the populated list
The tree view also displays the geometry of the selected
fitting in the preview panel in the right. You can navigate to locate a valid
fitting that matches the number and shape of ends. Clicking the selected item
gets applied against the ASHRAE Code field. The parameters and loss coefficient
values associated with chosen fitting populate in the table.
The "Contains:" field at
icon is used to set a filter to
list desired ASHRAE Fittings displayed in the dialog. The selection is again
done via ASHRAE tree view panel.
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Parameters
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Populates calculation parameters for respective
fittings selected from the ASHRAE tree view. For example, standard parameters
for Elbow DefaultRect,
CR3-1 would read
0* = 90°, r/W = 0.91, H/W = 0.82, etc. These
parameters are taken into computing of fitting loss coefficient. Select the
right fitting with required parameter values within the range of ASHRAE
specified limits, to aim at fitting having optimum loss coefficient value. Such
alternations to ASHRAE fittings apply respective loss coefficient value, that
will also appear in the section summary dialog.
For a selected ASHRAE fitting, if the parameter
values are not within ASHRAE specified limits, the loss coefficient value field
denotes "-99999.00", indicating the parameters are out
of ASHRAE data range.
Note: Though the
Parameters are seen editable (they are meant for future scope); for now any
alteration in such equations will not affect in loss coefficient dynamically.
A mouse hover on such fields display a warning message,
indicating the value is not applied. You can then modify the design to
accommodate the affected fitting equivalent with ASHRAE suggested fitting.
Instead of ASHRAE fitting, you may also make use
your fitting type by setting a desired loss coefficient value to it.
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Correction Factor
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Displays the correction factor value. It is a
multiplier and set to default 1.00. For non-ASHRAE fittings, setting it to a
different value, say 1.1 will compute loss by taking the correction of 10%
tolerance margin. This correction is allowed provided you adopt a right fitting
in the design, for example, using ducts with insulation layer. The revised loss
values for fittings will also reflect in the Section Summary table.
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Loss Coefficient
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Displays the loss coefficient value for the duct
fittings. Usually the standard values of fitting specification as provided by
the supplier. For ASHRAE fittings, the standard values are picked from the
ASHRAE table database and are non alterable.
For
Group By: Section, the section wise
losses summed up for fittings loss in a section are also displayed in the
summary row.
The "EqualTo:" field at
icon is used to set a filter for
listing desired Loss Coefficient values.
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Component Loss Override
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Displays component loss override value, usually zero
and it is indicated in gray color. However, can be set to override the loss
coefficient value in computing. When reset to a non-zero value, the Loss
Coefficient and Correction factor values turn gray and it will precede both
loss coefficient and correction values . Override can be set based on
performance merits of the component used in the system, for example using a
high quality fitting, altering damper angles or wings in the fitting, making
use of linings and insulation etc.
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Filter (Icon)
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The
Filter
option is available in Type of Fitting, ASHRAE Fitting No., and Coefficient
fields to filter required fittings or fittings of specific value.
Clicking next to "Contains:" field opens it in
editor field where a filter string can be set.
Example
of setting filter criteria in Type of Fitting, Contains: "Takeoff"
Entering a string will list the items that matches the string
in the field being filtered. The list will have only those fittings or values
displayed. The currently set filter string is shown before the filter icon.
Clicking in it and deleting clears the filter.
In case of ASHRAE fitting filter, clicking
Contains: opens the Tree View panel where
you pick a desired fitting to filter the table list. To clear this filter,
click
None in the root of the tree view.
Note: When the
filter is set, the filter icon
changes to
.
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