[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: [EnergyPlus_Support] Use shadowing control





Hello Alberto.

I believe you're viewing the wrong outputs to verify your control. Zone Diff Solar from Exterior Windows and Beam Solar will give you the amounts of radiation that enter the zone and not the radiation that will arrive at the window for each timestep. Try using the "Difuse Solar" and "Direct Solar" outputs.

I hope someone with more experience and knowledge steps forward to confirm if this is the problem or not, I'm still very "green" in E+. Anyway, untill someone does, you might want to try that.

Regards, 

Pedro.


To: energyplus-support@xxxxxxxx; EnergyPlus_Support@xxxxxxxxxxxxxxx
From: ahneto@xxxxxx
Date: Wed, 3 Mar 2010 14:26:01 -0300
Subject: [EnergyPlus_Support] Use shadowing control

 

Dear E+ users,
 
I am using shading control introduced into the Windowproperty:Shadingcontrol where I set the folowing parameters:
 
1) Shading control type: OnIfHighSolarOnWindow
2) Setpoint: 100 W/m2
 
Looking at the E+ Input/Output reference I check that, for such control type,  the shading is on if beam plus diffuse solar radiation incident on the window exceeds SetPoint (W/m2).
 
After the simulations, I was trying to check if the control was operating properly but I don´t know which variable I can use to check that. First, I use "Zone Diff Solar from Exterior Windows"  and "Zone Beam Solar from Exterior Windows" and I compared the values of these variables with and without the shading. I noticed, between 8 and 9 A.M. for a specific external window, that there is a difference on the values of such variables but when I added the values of the beam and diffuse radiation and divdided by thw window I reached a value of 13,5 W/m2 but I was expecting something close to 100 W/m2 when the shading should start operating. Any ideas which variable I should check in order to evaluate the proper operation of such shading?
 
Thanks for any help.
 
Alberto Hernandez Neto
 



Hotmail: Trusted email with powerful SPAM protection. Sign up now.

__._,_.___


The primary EnergyPlus web site is found at:
http://www.energyplus.gov

The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/

Attachments are currently allowed but be mindful that not everyone has a high speed connection.  Limit attachments to small files.

EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.




Your email settings: Individual Email|Traditional
Change settings via the Web (Yahoo! ID required)
Change settings via email: Switch delivery to Daily Digest | Switch to Fully Featured
Visit Your Group | Yahoo! Groups Terms of Use | Unsubscribe

__,_._,___