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Access the energy settings in Revit and recognize how each of the different settings impacts energy analysis.
Type:
Tutorial
Length:
6 min.
Transcript
00:04
Analysis of mechanical system design can be performed in rev
00:08
it without the need for physically modeling a system.
00:11
The process begins with the creation of an energy model and the options
00:15
found in the energy settings will determine how the energy model is created.
00:21
Energy settings also allow the user to establish some base
00:24
assumptions such as the building type and operating schedule.
00:29
The choices made within the energy settings will have a bearing on the outcome
00:32
of calculated values for heating and cooling loads and for H VAC system sizing
00:39
in this project, we will review the options available in the energy settings.
00:43
Dialog box,
00:44
consider the appropriate settings for different circumstances,
00:48
then make alterations to suit this particular project.
00:53
Ensure the current view is HVAC 3D views 3d,
00:59
locate the energy settings button on the analyze
01:02
tab of the ribbon and the energy optimization panel
01:06
select energy settings and review the initial energy analytical model settings.
01:13
There are four modes that will determine how the
01:16
energy model is created from the architectural model,
01:20
use building elements. If the project is created from physical model elements
01:26
use conceptual masses if the project has been created using mass modeling tools.
01:32
The recommended option is to use conceptual masses and building
01:36
elements which caters for both approaches for architectural model creation.
01:42
Finally, the energy model can be created from RT
01:45
rooms or spaces
01:47
use the recommended option and select conceptual masses and building elements.
01:54
Ground plane sets the level of the building assumed to be in contact with the ground.
01:60
Analytical space resolution and analytical surface resolution
02:04
dictate the accuracy of the energy model and increasing or decreasing.
02:09
These values alters not only the accuracy but also the processing time required
02:15
for a larger project.
02:16
These values may be altered to reduce the
02:19
accuracy but to also reduce the processing time.
02:23
Perimeter zone, depth and perimeter zone division
02:26
are used only with conceptual masses and where internal
02:30
walls have not been modeled in the building.
02:33
The threshold setting values control the application of thermal
02:37
loads and properties to spaces within the building.
02:41
By setting an appropriately low value,
02:44
the user can prevent small spaces such as small
02:47
storage areas and ceiling voids from being assigned.
02:50
This information.
02:53
A review of the advanced options allows the user to provide
02:57
more detailed information about the building and the intended systems.
03:03
The values found under the detailed model heading are for use
03:06
with projects that contain conceptual masses and are grayed out otherwise
03:13
under the advanced heading,
03:14
change the building service to va V single duct
03:18
to determine the heating and cooling system for the building
03:23
and set the building infiltration class to medium to indicate
03:28
the amount of air entering through leaks in the building envelope
03:35
under the building data heading.
03:37
Set the building type to the most appropriate description in this case,
03:41
hospital or healthcare
03:45
and set the building operating schedule to 24 7.
03:52
Set the H VAC system to the arrangement
03:55
that best describes the intended physical system.
03:58
And a range of assumptions will be applied to the analytical system. Calculations
04:05
set the outdoor air information based on the required
04:09
values for the intended use of the building.
04:11
From the options choose air changes per hour and set the value to eight.
04:20
It's not necessary to add rooms or spaces to create an energy model.
04:24
But if they have been created,
04:26
the export category option determines whether it is the data
04:31
from rooms or spaces that is used in the analysis.
04:35
In this case, set the option to spaces.
04:40
Finally,
04:41
the material thermal properties area is used to determine
04:45
which material data will be used during the analysis,
04:49
conceptual types,
04:51
which is used when the thermal properties have not otherwise been defined.
04:56
Schematic types
04:58
used to override thermal property values for specific building element types
05:03
and detailed elements where the thermal properties
05:06
from the architectural model will be used.
05:10
Select detailed elements from the available options
05:15
once reviewed and completed the energy settings. Dialog box can be closed.
05:22
A complete review of the energy settings and all of the
05:25
options within will ensure the mechanical systems analysis carried out.
05:30
For any building will return calculated values
05:34
that are aligned with the building type
05:36
intended use and physical systems to be installed.
Video transcript
00:04
Analysis of mechanical system design can be performed in rev
00:08
it without the need for physically modeling a system.
00:11
The process begins with the creation of an energy model and the options
00:15
found in the energy settings will determine how the energy model is created.
00:21
Energy settings also allow the user to establish some base
00:24
assumptions such as the building type and operating schedule.
00:29
The choices made within the energy settings will have a bearing on the outcome
00:32
of calculated values for heating and cooling loads and for H VAC system sizing
00:39
in this project, we will review the options available in the energy settings.
00:43
Dialog box,
00:44
consider the appropriate settings for different circumstances,
00:48
then make alterations to suit this particular project.
00:53
Ensure the current view is HVAC 3D views 3d,
00:59
locate the energy settings button on the analyze
01:02
tab of the ribbon and the energy optimization panel
01:06
select energy settings and review the initial energy analytical model settings.
01:13
There are four modes that will determine how the
01:16
energy model is created from the architectural model,
01:20
use building elements. If the project is created from physical model elements
01:26
use conceptual masses if the project has been created using mass modeling tools.
01:32
The recommended option is to use conceptual masses and building
01:36
elements which caters for both approaches for architectural model creation.
01:42
Finally, the energy model can be created from RT
01:45
rooms or spaces
01:47
use the recommended option and select conceptual masses and building elements.
01:54
Ground plane sets the level of the building assumed to be in contact with the ground.
01:60
Analytical space resolution and analytical surface resolution
02:04
dictate the accuracy of the energy model and increasing or decreasing.
02:09
These values alters not only the accuracy but also the processing time required
02:15
for a larger project.
02:16
These values may be altered to reduce the
02:19
accuracy but to also reduce the processing time.
02:23
Perimeter zone, depth and perimeter zone division
02:26
are used only with conceptual masses and where internal
02:30
walls have not been modeled in the building.
02:33
The threshold setting values control the application of thermal
02:37
loads and properties to spaces within the building.
02:41
By setting an appropriately low value,
02:44
the user can prevent small spaces such as small
02:47
storage areas and ceiling voids from being assigned.
02:50
This information.
02:53
A review of the advanced options allows the user to provide
02:57
more detailed information about the building and the intended systems.
03:03
The values found under the detailed model heading are for use
03:06
with projects that contain conceptual masses and are grayed out otherwise
03:13
under the advanced heading,
03:14
change the building service to va V single duct
03:18
to determine the heating and cooling system for the building
03:23
and set the building infiltration class to medium to indicate
03:28
the amount of air entering through leaks in the building envelope
03:35
under the building data heading.
03:37
Set the building type to the most appropriate description in this case,
03:41
hospital or healthcare
03:45
and set the building operating schedule to 24 7.
03:52
Set the H VAC system to the arrangement
03:55
that best describes the intended physical system.
03:58
And a range of assumptions will be applied to the analytical system. Calculations
04:05
set the outdoor air information based on the required
04:09
values for the intended use of the building.
04:11
From the options choose air changes per hour and set the value to eight.
04:20
It's not necessary to add rooms or spaces to create an energy model.
04:24
But if they have been created,
04:26
the export category option determines whether it is the data
04:31
from rooms or spaces that is used in the analysis.
04:35
In this case, set the option to spaces.
04:40
Finally,
04:41
the material thermal properties area is used to determine
04:45
which material data will be used during the analysis,
04:49
conceptual types,
04:51
which is used when the thermal properties have not otherwise been defined.
04:56
Schematic types
04:58
used to override thermal property values for specific building element types
05:03
and detailed elements where the thermal properties
05:06
from the architectural model will be used.
05:10
Select detailed elements from the available options
05:15
once reviewed and completed the energy settings. Dialog box can be closed.
05:22
A complete review of the energy settings and all of the
05:25
options within will ensure the mechanical systems analysis carried out.
05:30
For any building will return calculated values
05:34
that are aligned with the building type
05:36
intended use and physical systems to be installed.
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