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[EnergyPlus_Support] Re: Eco roof

I just used a timestep of 30 over the week end and still get this msg:

   ** Severe  ** CalcEcoRoof: Too few time steps per hour for stability.
   **   ~~~   ** ...Entered Timesteps per hour=[30], Change to some value greater than [60] for assured stability.

That's a lot of timesteps!

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Linda Lawrie <linda@...> wrote:
> Thanks, Ned.  I was going to point that out too.  While the weather 
> files may show it's raining, they may not have the amount there.  The 
> Site:Precipitation object should be included and accurate, at 
> minimum, I think.  Not sure about the RoofIrrigation, I'd have to 
> read the IORef carefully.
> At 09:52 AM 7/8/2011, Edward G. Lyon wrote:
> >You probably need the RoofIrrigation object because the rain data in 
> >the weather files is generally not that reliable yet.  Although 
> >there are fields for rain, the files used to make the weather data 
> >often do not have more than a rain flag and I have found that even 
> >that may be missing for some months of data.  You likely need to 
> >schedule rain for your area.
> >


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