Transcript Xtralis Identity Program

FASD700 & FHSD700 Range
ASPIRE2
Computer Modeling software
What is ASPIRE2 ?
ASPIRE2 brings features that allow more
flexible pipe design options:
• Configurable design parameters by
country
• A scalable Bill of Materials that supports
both regional and generic pipe programs
• A Installation Data Pack that clearly
guides the installation process
• Extensive On-line help with context
sensitive navigation to aid learning
• The introduction of Groups and
Applications allows advanced users the
flexibility of more demanding designs
• EN54-20 hole sensitivity approach
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What is ASPIRE2 ?
ASPIRE2 predicts pipe network performance to ensure
good design practice
• Sample Hole Flow
• Sample Hole Pressure
• Sample Hole Effective Sensitivity
• Sample Hole Transport Time
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Improved Usability
•Color coded feedback to clearly indicate pipe performance
•Context sensitive help guides the users design
•Navigation Tree that represents entire project
•Status overlay on icons
– The value is unknown.
– Warning
– Error :Indicates that the figure
is outside the parameters you
have specified for your project
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Improved Usability
Pipe Wizards allow faster pipe design
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Design Parameters
•To accommodate more flexible
designs ASPIRE2 calculates and
interprets all design parameters:
– Transport Time (default < 60
seconds)
– % Hole Balance (> 50%)
– Hole Pressure (Pa)
– Hole Sensitivity (%Obs)
– End Cap Sensitivity Factor
•Design parameters can be saved as
an “Application” and used later
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AutoBalance
Rather than working out the holes sizes manually ASPIRE2
does it for you automatically:
• User selectable drill bit sizes
• AutoBalance chooses hole sizes that achieve user specified
Design Parameters
– Flow,
– Pressure,
– Transport Time,
– Sensitivity Range
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Calculate
Pressing Calculate works out pipe performance based on
current hole sizes
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Groups
To allow different alarm sensitivities on a single pipe, ASPIRE2
automatically sets the appropriate alarm level with AutoBalance
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Groups
Question - When are Groups Used?
Answer – When a single detector requires different sample
hole sensitivities (hole diameters)
Examples
• Where a single pipe monitors both a ceiling void and
room environment (via capillaries) the user may require
higher sensitivity in the room
• A single pipe monitors two rooms where a lower
sensitivity is required in one of them
• When a higher sensitivity is specified for return air
monitoring and the detector is also monitoring at ceiling
level
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Support through On-Line Help
Comprehensive On-Line Help
• Context Sensitive Tool tip
• Microsoft Based structure and search capability
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Bill of Materials
•Supports regional pipe sets
•Can be calculated at Project, Detector or Pipe level
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Installation Data Pack (IDP)
•Collates all design notes for the installer
•Provides 3D diagram of design
•Better information will allow higher quality installation
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Commissioning report
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Principle of Aspirating Smoke
Detection
Sampling Flow
• pressure differential at the detector and a pipe is satisfied
by transporting air through a series of sample holes
• more holes results in less pressure at each hole
(pressure/no of holes)
• the further along the pipe, the pressure to be satisfied is
less
• pressure = flow
• flow is directly proportional to relative sensitivity
Vented end-cap to improve
transport time
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Good ASD Design
• Achieves consistent sampling sensitivity throughout the
entire pipe network
• Considers between achieving consistent sampling at
each hole and ensuring the longest transport time is
acceptable
– ASPIRE2 allows the user to specify the required
sensitivity and transport time
– ASPIRE2 users set appropriate holes sizes to
achieve the above
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Optimising System Performance
•Hole Balance
•Transport Time
•End Cap Sensitivity Factor
•Sensitivity vs Dilution
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Sampling Hole Balance
Group Balance % =
lowest/highest sample hole flow in a group
4.7 4.8
4.9
Balance =
5.0
5.1 5.2
5.4
5.5 5.7 5.8 6.0
6.2 6.5
4.7
Least Flow
=
x 100 = 72%
Most Flow
6.5
The importance of balance
The greater the balance percentage, the closer the sensitivity
becomes between the extremes of sampling holes
Default Balance = 70%
Minimum Balance = 50%
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Transport Time
•Transport Time remains a fundamental measure of
system performance.Transport time is how long it takes
for smoke to get from a sampling hole to the detector
(usually we consider the furthest sample hole to the
detector)
•To comply with the BFPSA Code of Practice, transport
time must not be more than 120 seconds
•It is recommend to use a target transport time of 60
seconds or less. For an optimum system, transport time
should be as fast as possible
•Aspire2 is configurable to allow you to set your target
transport time (can be used under EN54-20 targets for
classes A,B or C)
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End Cap Sensitivity Factor
• An end cap is used primarily to improve Transport Time
• End cap holes should normally be used as a sampling point
• If you need to improve the transport time you can use a
larger hole in the end cap. This will trade off reduction in
balance and blockage detection for better transport time.
• If your detector is set up to use end caps to minimize
transport time, ASPIRE2 places end caps in one group,
sample points into another and calculates an End Cap
Sensitivity Factor (ECSF): the ratio of the average
sensitivities of holes and end caps. For example, an ECSF of 3
means that the end cap is three times as sensitive, on average, as a hole. If
you are using end caps as regular sample points, ECSF isn't calculated
• The recommendation is ECSF <3.
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System Sensitivity v Dilution
Sample hole sensitivity = detector Fire 1 sensitivity divided
by the percentage of air flow provided by individual sample
holes.
4.7% 4.8% 4.9% 5.0% 5.0% 5.2% 5.4% 5.5% 5.7% 5.8%6.0% 6.2% 6.5%
Detector F1 Sensitivity
0.1
=
0.05 = 2.0% Obs/m full scale
Sample Point Flow
Fire 1 set to 0.1% Obs/m
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Summary
Optimising System Performance
•Balance : Provide for a minimum balance of 50%
•End Cap Sensitivity Factor <3
•Provide for a smoke target transport time of 60s or less
120s is acceptable under BS5839
•Consider detector sensitivity and dilution ratio
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End cap usage
• Create a balanced design : This increases the
sensitivity of detection for each hole as air can only come into the
pipe network through sample holes. By default 2 mm holes are
used. Every hole of the detector (included end caps) are assigned
to a single group. Do not drill end caps at too high diameters to
avoid bad balance
• Use endcaps to reduce transport time : This option
uses holes in the endcaps to allow more air into the pipe network and
improve the transport time by moving samples to the detector faster. By
default 4 mm holes will be used. With the design, end caps are excluded
from the main group and assigned to another one named en caps.
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Some practical tips
• To balance the flow : As pressure along the pipe reduces, use
slightly larger holes further away from the detector
• In the case where the pipes length is long :
– the designer may need to incorporate an end cap hole.
– A large hole at the end of the pipe “accelerates” the sample air along
the pipe length
– The sampling rate of all other holes is reduced (satisfying the pressure
differential)
– The sensitivity of all other holes is reduced (flow = sensitivity)
• Always start a pipe network design without an end cap
and introduce it if Auto Balance cannot achieve an
acceptable sensitivity and transport time results with the
sample holes alone
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Running ASPIRE2
1- If the program has been closed, double-click then ASPIRE2 icon on your
desktop, or alternatively, select Start | Programs | GE | ASPIRE2. (Each
time you start ASPIRE2 it will automatically open a new project)
2 - Create a new project and rename it Training _ASPIRE2” (using right click
on new project). Your file will be saved as training_ASPIRE2.aspire2
3 - Fill in the first page with all details project (Address – Contact – Installer –
calculated by)
3
2
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Exercise 1 : Primary detection
Computer room height : 3,5m
Detector installed at 1,5m
Space between sampling holes : 30cm (6 by AHU)
17m
AHU3
2m
3,5m
AHU
2
9,75m
2m
AHU1
1,5m
0,5m
2m
5m
2,5m
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Add a detector
1.
Add a new detector and rename it ‘’AHUs’’. You should give each detector
a meaningful name so that the installer will easily be able to determine the
detector location.
1
2.
On the general window, use ’’create a balanced design’’
3.
and FHSD724DC allow you to increase the aspirator speed which will
increase the speed of air in the pipe network. Leave speed at default
value (5) and increase if necessary (low hole flow, low pressure, bad
transport time)
4.
Look at all settings in the window : Fire threshold, T°, transport time….
4
2
3
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Add a pipe
1. Add a new pipe
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2. Rename it as ‘’AHU1’’
3. For the exercise, click on simple pipe
4. Enter the following values to have a first approach of the design
– Total pipe length : 10m
– Hole Separation : 0,3m
– First hole position : 8m
– Number of bends : 3
5. Click on next and check the values in the new window (pipe and hole
diameter). Change end cap to 0mm as there is no need of end cap drilled
2
3
4
4
4
5
4
5
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To refine the design
1. In order to have the layout according to the design, change the
value of the relative distance and direction of the Bends : 1st bend
at 2m Left, 2nd at 5m Forward and 3rd at 0,5m Left.
1
L
F
2
L
3
2. First hole is at 30cm far from 3rd bend. Change relative distance.
3.
We only need 6 holes : Select hole n°7 and delete it by clicking on the red
cross.
3
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To refine the design
1.
Click on calculate button to see if the design meets your
design criteria : Sensitivity / Transport time / flow / pressure
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1
2.
Click on view / 3D view. This will allow you to see a 3-D
view of the pipework.
3.
Continue exercise with AHU2 & AHU3. Use if
appropriate copy & paste function
2
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Exercise 1 : Results
Pipe 1
3D View (above the room)
Pipe 2
3D View (facing the detector)
Pipe 3
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Exercise
1
:
Results
Summary
Group details
Sampling point sensitivity (future)
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Exercise 2 : secondary detection
Room Height : 3,5m
Detector installed at 1,5m
Space between holes : 5m max (BS6266) - ambient and void floor
AHU
3
4,5m
2m
2,5m
5m
2,5m
AHU
2
2m
AHU1
2,5m
2,5m
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Exercise 2 : Results
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EN54-20 approach
1. ASPIRE2 allows you to specify a particular detector threshold class to
achieve EN 54-20 compliance
2.
You may specify multiple threshold levels for this detector (for example
Alert = Class A, Alarm = Class B and Fire 1 = Class C).
3.
Click on apply to display the value required. Here 0,096%, 0,287%
and 0,637%
2
3
2
3
3
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Exercise 2 : Results
Ambient
Void floor
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Exercise 3 : Detection in cabinets
Room height : 3,5m
Detector installed at 1,5m
Cabinets : H=2m L=80cm
AHU3
1,5m
1,5m
AHU2
4m
4,5m
0,8m
AHU1
2m
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Exercise 3 : Results
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Exercice 4 : Case study
Location of sampling holes to complying
with BS5839 for total protection
(tool dep. + Showroom + offices)
Office +
Showroom Area
Height : 2,5m
Detectors Installed at 2m
20m
30m
Warehouse
Height : 10m
20m
110m
Tool Department
Height : 3,5m
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Case study : a solution
Aspiration
system
network
Fire system
loop
xx
x
FHSD720
C
x
x
x
VSM4
Showroom
FHSD720
C
FHSD720
C x
x
Fire Panel
x
x
x
x
IFT1
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FHSD721
FHSD721
FHSD721
FHSD721
Flow Balance Needs to Improve
•Check that the size of the sampling holes used is
relatively the same. A small increase in the size of holes is to be
expected as you get further away from the detector. Large differences in
holes size will need to be reviewed to improve the balance.
•Use the Auto Balance functions to determine the
appropriate hole size.
•Reduce the size of the end cap hole.
•If the pipe has a collection of sampling points in the
pipe and capillaries. Remember that the holes will need to be
slightly larger than the hole size used in the pipe.
•You could also try a different pipe configuration.
Use a
T or H instead of one long pipe.
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Hole Flow Needs to Improve
•Check the hole sizes being used.
Increasing the hole size and
re-calculating should resolve this problem.
•FHSD700 range detectors allow you to increase the
aspirator speed and the flow of air in the pipe network.
Select the detector in the tree view. If the aspirator speed is displayed in the
details panel increase the speed and recalculate the design or use Auto
Balance to see if the transport time is now acceptable.
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Hole Pressure Needs to Improve
•Check the hole sizes being used.
Decreasing the hole size and
re-calculating should resolve this problem.
•FHSD700 range detectors allow you to increase
the aspirator speed and increase the speed of
air in the pipe network. Increase the speed and recalculate the
design or use Auto Balance to see if the minimum hole pressure is now
acceptable.
•The pipe may be too long.
If the pipe is protecting a room, try
using a T or H shaped pipe network instead.
•There may be too many holes for the type of detector
chosen. Either select a more powerful detector or add another detector
to the project.
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