Re: [EnergyPlus_Support] Re: How to simulate building model without the influence of Radiation

[Edwin Lee <leeed2001@xxxxxxxxx>]

Off the top of my head, and a brief look at the IDD, the windows don't have an obvious keyword to turn off incident radiation.  There is an 'other side coefficients' field which you could utilize.  However, I think the easiest way, since you aren't considering radiation anyway, is to just make a regular building surface using the same window material properties.  For example, instead of entering your window glass as a window material, just give the same properties for a Material:Regular.  I'm not 100% sure how the window gas will translate, but if you can come up with some equivalent properties, this would be the easiest way I could think of to model a window without radiation.

Edwin

On Wed, May 13, 2009 at 8:30 AM, tedpoe01730 <tpoe@xxxxxxxxxxxxxxxxx> wrote:

If there are windows in the building, will you still have internal heat gain inside the structure?

-ted

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Rongxin Yin <rongxinyin@...> wrote:
>
> Got it, Thanks a lot.
>
> Rongxin
> ________________________________

> From: Edwin Lee <leeed2001@...>

> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> Sent: Tuesday, May 12, 2009 2:07:05 PM
> Subject: Re: [EnergyPlus_Support] How to simulate building model without the influence of Radiation
>
> On each building surface, just change it to neglect solar radiation. The seventh field is the sun exposure, so change it from: SunExposed (or blank) to NoSun. This should 'turn off the sun' for that surface.
>
> Edwin
>
> On Tue, May 12, 2009 at 1:12 PM, Rongxin Yin <rongxinyin@yahoo. com> wrote:
>
> Hi guys,
>
> I'd like to conduct simulation on several control strategies, while i want to get a constant outside weather condition without the influence of sun radiation. I check the variable parameters in *.epw file and find the following three variable parameters "Horizontal Infrared Radiation Intensity, Direct Normal Radiation, Diffuse Horizontal Radiation" used in the calculation. Here it is: If i set these values into "0", could the load calculation omit the influence of "Radiation"?
> If not, are there other methods to achieve it?
>
> Best Regards,
>
> Rongxin
>

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