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Re: [EnergyPlus_Support] Grate as solar protecti on



Jim,

It's a stationary grate, placed in front/above a 2 storey building under an angle of 45 degrees. It's 50% photovoltaic and 50% grate (solar protection) 

The grate is thin (approx 40mm).

I was thinking about the transmission schedule also, but no clue how to calculate a mean transmission for every month.....




Met vriendelijke groeten,
 
Geert Bellens

----- Reply message -----
Van: "Jim Dirkes jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Aan: "EnergyPlus_Support@xxxxxxxxxxxxxxx" <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Onderwerp: [EnergyPlus_Support] Grate as solar protection
Datum: wo, mrt. 16, 2016 21:38

 

Geert,
I don't know what you mean because I do not understand how this grate might be installed. Is it movable or stationary? How thin?

Assuming stationary, perhaps the transmittance schedule could be created to reflect the approximate net transmittance each month?

On Wed, Mar 16, 2016 at 4:29 PM, Geert Bellens geert.bellens@xxxxxxxxxxxxxxxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
 

Jim,

what about the grate angle when tilting the component block ?


 

Met vriendelijke groeten,

 
Geert Bellens
Op 16/03/2016 om 20:29 schreef Jim Dirkes jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx [EnergyPlus_Support]:
 
Geert,
How about making a DesignBuilder component block (Shading:Site:Detailed) with non-zero transmittance that corresponds to the grate's open area?

On Wed, Mar 16, 2016 at 3:19 PM, geert.bellens@xxxxxxxxxxxxxxxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
 

Has anyone experiance with modelling a grate (typical 44x44 mm) used as solar protection?


I have a client who wants to use such a grate under 45° to protect his building from the sun.

I could draw the grate in Designbuilder, but the dimensions are to small and the total surface is to large.

Is there a way to model such a solar protection in an alternative way?

Geert





 --

James V Dirkes II, PE, BEMP, LEED AP
CEO/President
The Building Performance Team Inc.
1631 Acacia Dr, GR, Mi 49504

Direct: 616.450.8653
jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx

Website l  LinkedIn

There are two basic choices when considering our world: 
1) it is all random happenstance
2) it was created with a purpose
Believing #1 can only result in anarchy. I pick #2 and work on discovering / living out that purpose.





--

James V Dirkes II, PE, BEMP, LEED AP
CEO/President
The Building Performance Team Inc.
1631 Acacia Dr, GR, Mi 49504

Direct: 616.450.8653
jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx

Website l  LinkedIn

There are two basic choices when considering our world: 
1) it is all random happenstance
2) it was created with a purpose
Believing #1 can only result in anarchy. I pick #2 and work on discovering / living out that purpose.



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