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Revit Energy Analysis No Cooling

8 REPLIES 8
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Message 1 of 9
Anonymous
2327 Views, 8 Replies

Revit Energy Analysis No Cooling

Hello!

Is it possible to run an energy analysis in Revit without considering the Air Conditioning System for the cooling load? I think it is possible, because there are a lot of places where It is ridiculous to install Air conditioning System in the summer.

 

Are the results Site Energy or Source Energy?

8 REPLIES 8
Message 2 of 9
krishnan.gowri
in reply to: Anonymous

Revit Energy Analysis using Insight includes several possible scenarios of heating and cooling systems.  For the baseline energy model creation, you can specify a generic HVAC system, even if you plan to use no cooling system.  In order to model a building with no cooling system, you may want to consider setting the zone set point temperatures such that no cooling energy is used.  It is possible to evaluate the impact of HVAC system using the Insight factor widget.

 

Revit/Insight energy analysis results are presented using site energy.

 

 

Krishnan Gowri, Ph.D. FASHRAE, LEED AP
Principal Engineer
Generative Design Group
Message 3 of 9
Anonymous
in reply to: krishnan.gowri

Could you explain me how can I no using the cooling system please?

 

I thought Revit/Insight results are presented using source energy, where can I found this issue?

Message 4 of 9
mstein7484
in reply to: Anonymous

Hi @elmitodeherta2

 

As Krishnan pointed out in his earlier post, the Revit/Insight energy results are for site energy, not source energy. Unfortunately, we do not have this information documented.

 

The simulation engine used by Insight (DOE2) requires at least one HVAC system per zone, which means there will need to be an HVAC system in your model or the energy simulation will fail. However, as Krishnan mentioned, you can emulate a project without an HVAC system by setting the zone set point temperatures (very high temperature for Cooling and very low temperature for Heating). The temperature set points are in the Revit HVAC Zone properties. By doing so the HVAC system will never be activated and therefore the energy simulation will have no heating or cooling energy. It doesn’t matter what type of HVAC system you choose for the analysis, as long as you edit the temperature set points. For the custom set points to be used by Insight, in the Insight Energy Settings>Advanced Energy Settings>Room/Space Data choose the Export Category "Spaces."

 

Let us know if you have more questions on this topic, otherwise please accept as a solution so that others can benefit from this information.

 

Regards,
 

 

 



Marjorie Stein
QA Analyst
Generative Design Group
Autodesk, Inc.

insight.support@autodesk.com
Message 5 of 9
Anonymous
in reply to: mstein7484

Thanks @mstein7484 for the your answer,

 

but I did the following steps:

1- Create a space in each room

2- Define HVAC zone

3- Properties - Energy Analysis - Condition Type - Heated( picture is attached).

4- Run Energy Simulation

 

The results with only heated condition type are higher in terms of energy use intensity than with Heated and Cooling one condition type. In theory it's impossible!

 

But if I click in Heating and Cooling Loads (Analyze - Reports & Schedules) appear 0 cooling load as is obvious that it is!

 

Have you a solution for my issue?

 

Thanks in advanced

 

Message 6 of 9
Anonymous
in reply to: krishnan.gowri

Hi, I have problem with my Energy analysis. Has anyone problem like this? 

 

Przechwytywanie.JPG

Message 7 of 9
mstein7484
in reply to: Anonymous

Hi @Anonymous

See the answer in this post: https://forums.autodesk.com/t5/insight-energy-forum/error-issue-an-error-has-occurred-related-to-the-doe-2/m-p/7114926#M2239

 

Regards,

 



Marjorie Stein
QA Analyst
Generative Design Group
Autodesk, Inc.

insight.support@autodesk.com
Message 8 of 9
mstein7484
in reply to: mstein7484

Hi @Anonymous

Could you export the files from Insight for the "Heated" as well as the "Heated and Cooled" Insights & send them to me in a private message: (see the screenshots)

1. Open the Insight where the models are

2. Expand the menu for the models and select "Export"

3. From the file options, export all of the files

4. Make sure to label the exported files clearly

 

Regards,

 



Marjorie Stein
QA Analyst
Generative Design Group
Autodesk, Inc.

insight.support@autodesk.com
Message 9 of 9
a88129
in reply to: mstein7484

I am facing the same problem here. I don´t want any cooling system. I have defined the zones as heated too but what´s the correct way to solve this problem? Should I keep the temperature set point very high temperature for Cooling and very low temperature for Heating?

I only have eletrical radiators in my building.

 

 

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