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Re: [EnergyPlus_Support] Re: Modelling External Surface Emission





You need only define an output to generate the rdd file for your simulation. This file lists all the possible output you may then specifically define in your idf...amongst them the outputs you require.

On 16 Nov 2016 3:46 pm, "clmentribault@xxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
 

Hi,


About external (or internal) surface emission properties in EnergyPlus, for a wall we can define it as we want since each "material" has a thermal absorptance and a solar absorptance. 

If we define a window with "WindowMaterial: Glazing", we also can give a lot of information about radiative properties of the window : front/back side solar reflectance / infrared hemispherical emissivity, solar/infrared transmittance...  

I am currently working in a project where I compare various dynamic thermal simulation tools, including EnergyPlus. I defined all the windows using "WindowMaterial:SimpleGlazingSystem" because it seems to be the only way to have the same windows description for all the DTS tools. 

In this case, how can I know which percentage of solar and infrared radiations are absorbed and reflected by these windows ? I suppose EnergyPlus use some defaults values, but I did not manage to find it. 

Thank you for any help !

Clément



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Posted by: Jean Marais <jeannieboef@xxxxxxxxx>


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