Search found 372 matches

by Luis Sousa
Tue May 22, 2018 5:00 pm
Forum: EnergyPlus General
Topic: summer thermal stability
Replies: 3
Views: 2478

Re: summer thermal stability

Hi Jan,

Could it be that the glazing U-value is lower for the SHGC_0,514 case?

BR,
Luis
by Luis Sousa
Tue May 22, 2018 3:21 pm
Forum: EnergyPlus General
Topic: the problem for the leed report
Replies: 1
Views: 1769

Re: the problem for the leed report

Hi Wubo,

Are getting this problem with the latest v5.4 release?

BR,
Luis
by Luis Sousa
Wed May 16, 2018 11:21 am
Forum: EnergyPlus General
Topic: changing the glazing type without effect on consumption!?
Replies: 8
Views: 6953

Re: changing the glazing type without effect on consumption!?

Another thing to check is the difference on the solar gains for each glazing type as this will also have an impact on the consumption. The Uvalue is not the only parameter in the glazing that affects the results.

BR,
LS
by Luis Sousa
Fri May 11, 2018 4:46 pm
Forum: EnergyPlus HVAC
Topic: Mechanical ventilation stops spontaneously
Replies: 1
Views: 4653

Re: Mechanical ventilation stops spontaneously

Hi

From your description, the Mixed mode is giving priority to Nat Vent and this turns off the AHU.

In this case you will need to check your model inputs to find out which input is not allowing the window to open when the conditions are suitable for natural ventilation.

BR,
LS
by Luis Sousa
Fri May 11, 2018 4:33 pm
Forum: EnergyPlus General
Topic: wall numbering Results Viewer
Replies: 1
Views: 2010

Re: wall numbering Results Viewer

Hi,

The surface ID can be found at Edit screen by navigating to the surface (DB navigation panel) and check at the Outputs tab the field Name in last EnergyPlus calculation.

BR,
LS
by Luis Sousa
Fri May 11, 2018 4:25 pm
Forum: EnergyPlus General
Topic: Cold Storage Refrigeration Modeling
Replies: 1
Views: 1856

Re: Cold Storage Refrigeration Modeling

Hi,

As far as I know its not possible to model walk-in freezers in the current DesignBuilder v5.

But this is possible in EnergyPlus. See link below:
https://unmethours.com/question/30673/m ... ergy-plus/

BR,
LS
by Luis Sousa
Fri May 11, 2018 4:22 pm
Forum: EnergyPlus General
Topic: No .CSV file generated after simulation
Replies: 1
Views: 1794

Re: No .CSV file generated after simulation

Hi,

Please check if your computer Regional Settings are using a dot as decimal separator. When using a comma then the .tab is generated instead.

BR,
LS
by Luis Sousa
Fri May 11, 2018 4:18 pm
Forum: EnergyPlus General
Topic: changing the glazing type without effect on consumption!?
Replies: 8
Views: 6953

Re: changing the glazing type without effect on consumption!?

Hi,

Have you check if the glazing data is being inherited correctly to opening level and the new glazing solution is being used?

BR,
LS
by Luis Sousa
Fri May 11, 2018 4:13 pm
Forum: CFD
Topic: Error switching view
Replies: 1
Views: 2494

Re: Error switching view

Hi,

Have you tried to reinstall the software to see if fixes the issue?

BR,
LS
by Luis Sousa
Fri May 11, 2018 4:11 pm
Forum: Radiance Daylighting
Topic: Results differ each time of running simulations
Replies: 1
Views: 2319

Re: Results differ each time of running simulations

Hi, As described on the Progam Help Radiance works using a statistical Monte Carlo approach and this means that you will not get exactly the same results if you repeat a calculation using exactly the same model and options. You can reduce this effect by using higher detail settings but you cannot co...
by Luis Sousa
Fri May 11, 2018 4:06 pm
Forum: Geometric Modelling
Topic: Spreadsheet View
Replies: 4
Views: 6717

Re: Spreadsheet View

Hi,

Yes, it is possible to see the model inputs as you describe using the Model data grid view at menu Tools. This feature is available in DBv5.4.

BR,
LS
by Luis Sousa
Thu Mar 01, 2018 5:07 pm
Forum: EnergyPlus HVAC
Topic: Desiccant Dehumidifiers
Replies: 8
Views: 35333

Re: Desiccant Dehumidifiers

Hi Maciej,

I'm afraid that the Desicant dehumidification system has not been implemented yet in DesignBuilder v5.2.
Hopefully it will be available in future versions.

BR,
LFS
by Luis Sousa
Thu Mar 01, 2018 5:03 pm
Forum: EnergyPlus HVAC
Topic: Dehumidifier only on simulation
Replies: 2
Views: 5170

Re: Dehumidifier only on simulation

Hi,

On the AHU cooling coil dialog have you select the control to 2-Humidity Ratio option?

I believe that the following Help link should provide more details about Dehumidification.
http://www.designbuilder.co.uk/helpv5.2/#HumidityControl.htm

BR,
LFS
by Luis Sousa
Thu Mar 01, 2018 4:39 pm
Forum: CFD
Topic: outdoor yard
Replies: 1
Views: 2408

Re: outdoor yard

Hi,

Please have a look at Designbuilder EnergyPlus CFD link webinar that shows how to use DesignBuilder to carry out detailed natural ventilation studies by using EnergyPlus to calculate boundary conditions for a CFD analysis.
https://www.youtube.com/watch?v=NS9ixAqUCPA

BR,
LFS
by Luis Sousa
Thu Mar 01, 2018 4:20 pm
Forum: Geometric Modelling
Topic: Resize objects/windows
Replies: 1
Views: 2338

Re: Resize objects/windows

Hello,

I'm afraid that model scaling is not available in current versions.
You will need to redraw the blocks or use the Stretch object tool (available at toolbar). The Stretch tool can also been used to adjust windows.
https://designbuilder.co.uk/helpv5.2/#_Stretch.htm

BR,
LFS

Go to advanced search