Sorry, I read film not fin…it is just geometry to cast a shadow
on the glass and the shading coefficient will be a variable with the solar
angle. EnergyPlus could give you the raw numbers to calculate this by looking
at the window solar gain each time step with and without the fin.
Ned
Lyon, P.E. (MA)
Staff Consultant
SIMPSON
GUMPERTZ & HEGER
781.907.9000 main
781.907.9350 direct
781.907.9009 fax
www.sgh.com
From:
EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On
Behalf Of Pallavi Mantha
Sent: Thursday, December 18, 2008 1:12 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: Re: [EnergyPlus_Support] Window heat gain- shading coefficient
calculation
Thanks Ned,
but I'm not sure if Window takes into account shading from the shading fin.
Thanks,
Pallavi
On Thu, Dec 18, 2008 at 12:57 PM, Edward G. Lyon <eglyon@xxxxxxx> wrote:
You
can calculate glazing properties using the WINDOW and OPTIC programs from
LBL. OPTIC allows you to make a glass for WINDOW using different base
glasses and applied films as long as they are in the current library.
WINDOW will then calculate a number of glazing system performance parameters
based on the glass you import from OPTIC
Ned
Lyon, P.E. (MA)
Staff Consultant
SIMPSON
GUMPERTZ & HEGER
781.907.9000 main
781.907.9350 direct
781.907.9009 fax
www.sgh.com
From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx]
On Behalf Of pallavimantha
Sent: Thursday, December 18, 2008 12:12 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Window heat gain- shading coefficient
calculation
All,
I need to calculate shading coefficient of a window glass with and
without the effect of a shading fin. I could not find any software
that does this for me so this is how I�m trying to to calculate it:
Calculate window heat gain for both cases from Eplus and then perform
a manual calculation to get shading coefficient of the window. Since
the shading coefficient is the ratio of solar heat gain admitted
through the glass as compared to the solar heat gain admitted through
1/8" clear glass (1/8" clear glass = 1.0 Shading Coefficient) under
similar conditionsâ�¦ so If I siimulate the base case as 1/8â� clear
glassâ�€¦ and then calculate the ratio.. I should get my resultâ�¦ (?)
Did anyone of you face this kkind of a scenario before? Can you please
shed some light on this?
Would you know of any tools that does this kind of simulation?
Any input is highly appreciated!
Thanks,
Pallavi
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.
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
__,_._,___