Make and review changes to connector configurations in a mechanical system.
Tutorial resources
These downloadable resources will be used to complete this tutorial:
Transcript
00:05
The system classification
00:07
is again set to supply.
00:09
But the flow direction is now set to out at the
00:12
connector as the flow of air leaves the fan call unit.
00:17
We saw previously how the flow of all air
00:19
terminals was calculated at the fan core unit.
00:22
This is because the flow configuration of the supply
00:25
fan core unit connector is set to calculate it.
00:30
A review of the return connector shows the same arrangement.
00:37
Finally,
00:38
the size of the connector is associated to corresponding family
00:42
parameters in the same way as the air terminal connector
00:48
close the fan
00:49
unit firmly without saving the changes.
00:54
In summary, a change to flow rate at any of the air terminals on the system
00:59
will result in a change to calculated values at the fan call unit.
01:07
The piping arrangement shown in this view is made up of an air
01:10
handling unit with a preset water flow rate of five gallons per minute.
01:16
And a Chia
01:17
whose flow rate value is calculated from the air handling unit,
01:22
change the value at the air handling unit to 10 gallons per minute
01:26
and the value at the chiller will be the same
01:32
select each of the pumps in this arrangement and
01:35
note the flow rates through both of them.
01:37
It can be seen that the total value in the
01:39
system has been divided between the two but not equally
01:46
open the pump in the family editor and review the connector configurations,
01:54
select the incon connector and note the flow configuration is set to calculate it
01:60
because there is more than one pump.
02:01
The configuration must be set to system so that the user
02:05
can determine the proportion of flow going through each pump.
02:11
You will see the flow factor parameter has now become active.
02:15
A value can be set here or it can be set so
02:18
that the user can control the parameter from within the project.
02:23
Select associate family parameter
02:27
and then create a new parameter called flow factor.
02:36
Make this an instant parameter
02:39
and group it under mechanical flow.
02:43
Then close the dialog box
02:47
carry out the same procedure for the out connection on the pump
02:51
setting the connector configuration to system
02:56
and then associate the flow factor parameter
03:03
for each connector.
03:04
Select associate family parameter
03:08
against flow.
03:10
Then create a new instance parameter called chilled water flow
03:15
and group it under mechanical flow
03:29
select OK. To close all dialog boxes,
03:34
load the family back into the project and overwrite the existing.
03:41
Finally
03:42
enter the mechanical settings
03:45
and disable the option for closed loop piping networks.
03:53
The flow factor parameter is used to control the proportion of flow to each
03:57
pump and set to naught 0.5 will divide the flow equally between the two.
04:04
A review of the flow rates for the pipework in the system shows
04:07
the same distribution of the available flow set at the air handling unit.
04:15
In this video,
04:16
we have looked at the importance of the application of system connectors
04:20
and connector configurations for a range of elements in a mechanical system.
04:25
Correct application will ensure the accuracy of
04:27
information such as flow pressure and velocity
04:31
information that can be used to establish pipe and duct
04:34
sizes and to assess the suitability of associated mechanical equipment.
00:05
The system classification
00:07
is again set to supply.
00:09
But the flow direction is now set to out at the
00:12
connector as the flow of air leaves the fan call unit.
00:17
We saw previously how the flow of all air
00:19
terminals was calculated at the fan core unit.
00:22
This is because the flow configuration of the supply
00:25
fan core unit connector is set to calculate it.
00:30
A review of the return connector shows the same arrangement.
00:37
Finally,
00:38
the size of the connector is associated to corresponding family
00:42
parameters in the same way as the air terminal connector
00:48
close the fan
00:49
unit firmly without saving the changes.
00:54
In summary, a change to flow rate at any of the air terminals on the system
00:59
will result in a change to calculated values at the fan call unit.
01:07
The piping arrangement shown in this view is made up of an air
01:10
handling unit with a preset water flow rate of five gallons per minute.
01:16
And a Chia
01:17
whose flow rate value is calculated from the air handling unit,
01:22
change the value at the air handling unit to 10 gallons per minute
01:26
and the value at the chiller will be the same
01:32
select each of the pumps in this arrangement and
01:35
note the flow rates through both of them.
01:37
It can be seen that the total value in the
01:39
system has been divided between the two but not equally
01:46
open the pump in the family editor and review the connector configurations,
01:54
select the incon connector and note the flow configuration is set to calculate it
01:60
because there is more than one pump.
02:01
The configuration must be set to system so that the user
02:05
can determine the proportion of flow going through each pump.
02:11
You will see the flow factor parameter has now become active.
02:15
A value can be set here or it can be set so
02:18
that the user can control the parameter from within the project.
02:23
Select associate family parameter
02:27
and then create a new parameter called flow factor.
02:36
Make this an instant parameter
02:39
and group it under mechanical flow.
02:43
Then close the dialog box
02:47
carry out the same procedure for the out connection on the pump
02:51
setting the connector configuration to system
02:56
and then associate the flow factor parameter
03:03
for each connector.
03:04
Select associate family parameter
03:08
against flow.
03:10
Then create a new instance parameter called chilled water flow
03:15
and group it under mechanical flow
03:29
select OK. To close all dialog boxes,
03:34
load the family back into the project and overwrite the existing.
03:41
Finally
03:42
enter the mechanical settings
03:45
and disable the option for closed loop piping networks.
03:53
The flow factor parameter is used to control the proportion of flow to each
03:57
pump and set to naught 0.5 will divide the flow equally between the two.
04:04
A review of the flow rates for the pipework in the system shows
04:07
the same distribution of the available flow set at the air handling unit.
04:15
In this video,
04:16
we have looked at the importance of the application of system connectors
04:20
and connector configurations for a range of elements in a mechanical system.
04:25
Correct application will ensure the accuracy of
04:27
information such as flow pressure and velocity
04:31
information that can be used to establish pipe and duct
04:34
sizes and to assess the suitability of associated mechanical equipment.
Make and review changes to connector configurations in a mechanical system.
In the Properties palette, note the following:
The total flow rate in the system is divided between the pumps, but not equally.
Associate the Flow Factor parameter, so that the value can be changed at the pump within the project:
Since the required parameter does not exist, create a new one:
Now, associate the new Flow Factor parameter with the OUT connector:
Next, create a chilled water flow parameter and associate the parameter for each connector:
A review of the new CHW-F parameter confirms that the total flow rate in the system is now equally divided between the two pumps.
