Re: [EnergyPlus_Support] Low illuminance values for Blinds simulation.

[Rob Hitchcock <RJHitchcock@xxxxxxx>]

The EnergyPlus calculation of optical properties (both solar and 
visible) are based on methods developed by Simmler, Fischer and 
Winkelmann, that are described in detail in the Engineering Reference 
Manual under "Optical Properties of Window Shading Devices."  Results 
from these methods have been compared to ISO 15099 Calculation of Blind 
Optical Properties, also described in the Eng. Ref., and show good 
agreement except for small slat angles (10 degrees).

Your results will depend on a variety of factors including slat 
geometry, slat material properties, slat angle, window construction, 
dimensions and position relative to daylight reference points, interior 
opaque surface properties, and daylighting control strategy.

Rob Hitchcock
===========
gv.deepak wrote:

> Hello everyone.
>
> I am involved in the simulation of Window blinds. I have been
> performing some simulations for simple blinds system. I am having
> a 6'X6' window on an 10' X 11' wall. I am expecting sufficient
> light for this room but I am getting very low value of
> illuminance(270 lux maximum) . I have uploaded the IDF Editor file in
> the files section. I would like to know what might be the Problem with
> such abrupt results.
>
> I will be involved in simulating Multiple blinds. I wish to know
> if the Illuminance values obtained from Energy plus are good
> enough for obtaining validated results or we must look for other
> daylighting simulation softwares such as RADIANCE ?
>
> Thank you
>
>  




[Non-text portions of this message have been removed]


------------------------------------

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 not allowed -- please post any files to the appropriate folder in the Files area of the Support Web Site.

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

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/EnergyPlus_Support/

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    http://groups.yahoo.com/group/EnergyPlus_Support/join
    (Yahoo! ID required)

<*> To change settings via email:
    mailto:EnergyPlus_Support-digest@xxxxxxxxxxxxxxx 
    mailto:EnergyPlus_Support-fullfeatured@xxxxxxxxxxxxxxx

<*> To unsubscribe from this group, send an email to:
    EnergyPlus_Support-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/