Am 15.09.2017 09:05 schrieb "Amrita Ghosh amritaghosh1986@xxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx>:
Dear Julien,Thank you so much for the links. I found them very useful.As regards the gas properties, the molecular weight and Cp are fine, but I have a confusion with the conductivity and viscosity values. For example, in the text book of Necati Ozisik, the conductivity of air (at 300K) is 0.026 W/m.K, but in the program it is 2.873d-3 which is equal to 0.002873.Please let me know if these values are taken from ASHRAE handbook and also the unit of the values.Thank you,AmritaOn Thursday, 14 September 2017 7:58 PM, "Julien Marrec julien.marrec@xxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@yahoogroups.com > wrote:
ÂGood luck.Hi,They are harcoded in the source code: DataHeatBalance.cc#L605.It looks weird, but consider it a table with 3 rows, and 10 columns. The first 4 columns are actually used, in order, by Air, Argon, Krypton, Xenon.It actually looks better in the original Fortran code (see here)If you want to track down what's happening, HeatBalanceManager.cc (check out a few lines later) and WindowManager.cc are the two others files where you need to look.You probably want to check out the entire Window Heat Balance section of the documentation (online here)2017-09-14 11:50 GMT+02:00 Amrita Ghosh amritaghosh1986@xxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@yahoogroups.com >:ÂHello,Can anyone tell me where I can see the properties of Air, Argon or other inert gases that Energy Plus use when we select them in "WindowMaterial:Gas" for using them in glazing systems?Thank you,Amrita
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Posted by: Jean Marais <jeannieboef@xxxxxxxxx>
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