Re: [EnergyPlus_Support] Weather file of College Station - Texas

[Linda Lawrie <linda@xxxxxxxxxxxxxx>]

I think you need to look at the full statistics file to get
an idea.  You may be taking things out of context.

You're only referencing one line and it's a summary statistics
file.  You may be better off to look at the individual
hours.

or you can go directly to the source of the TMY3 files.

At 09:30 AM 11/5/2009, Eman Tora wrote:


> Hello
>
>
>
> To find the direct normal solar radiation for College Station, TX, I went
> to the following web site:
>
> http://www.eere. energy.gov/ buildings/ energyplus/ cfm/weather_
> data.cfm
>
> Then, I chose the country, the state, the city then clicked on the Stat
> tab and get solar data. Here is what I got:  
>
> Month
>
> Jan
>
> Feb
>
> Mar
>
> Apr
>
> May
>
> Jun
>
> Jul
>
> Aug
>
> Sep
>
> Oct
>
> Nov
>
> Dec
>
>
> 4311 
>
> 4089 
>
> 4543 
>
> 4656 
>
> 4756 
>
> 3564 
>
> 4865 
>
> 4942 
>
> 4264 
>
> 2758 
>
> 2725 
>
> 4440 
>
>  
>
>
>  I have a
> question:
> The trend for the DNI does not seem to make much sense to
> me. How can June 
>
> be 3564 and January
> be higher
> 4311.
>
>
> Your input will be greatly
> appreciated.
>
>
> Many
> thanks.
>
>
> E.
> Tora
>
>
> From: Eman Tora
> <emanmag@xxxxxxxxx>
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> Sent: Wed, November 4, 2009 1:51:52 PM
> Subject: Re: How [EnergyPlus_Support] A question
>
>   
>
> Hello
>
> Actually, I still do not understand ; I still need some more details or
> explanation
> And I appreciate very much if I get   MORE   help
> ppppppppppppppppppp pppppppppppppppp ppppppppppppppp
>
> Eman  Tora
>
>
> From: JRR <energy.wwind@
> cox.net>
> To: EnergyPlus_Support@ yahoogroups. com
> Sent: Mon, November 2, 2009 10:54:28 PM
> Subject: Re: [EnergyPlus_ Support] A question
>
>   
>
> So -- your location is very near the Equator, but still North of it.
> Since we know that direct beam is about 2.5 to 1 ratio Summer to Winter
> at 40 deg latitude
> with no cloud cover and this is less........ ..the sun is high overhead
> all year.
> The drop outs in Jun, Oct, Nov are from large storms / hurricanes. 
> They take 4 to 7
> days to pass, blowing that month's daily average insolation given in
> wh/m2, probably on
> a horizontal surface.  So you're in a tropical marine climate.....
> ...
> Next...
>
> Eman Tora wrote: 
> >   
> > Greetings,
> >
> > To find the direct normal solar radiation for College Station, TX, I went
> > to the following web site:
> >
> > http://www.eere. energy.gov/ buildings/ energyplus/ cfm/weather_
> > data.cfm
> >
> > Then, I chose the country, the state, the city then clicked on the Stat
> > tab and get solar data. Here is what I got:  
> >
> > Month
> >
> > Jan
> >
> > Feb
> >
> > Mar
> >
> > Apr
> >
> > May
> >
> > Jun
> >
> > Jul
> >
> > Aug
> >
> > Sep
> >
> > Oct
> >
> > Nov
> >
> > Dec
> >
> >
> > 4311 
> >
> > 4089 
> >
> > 4543 
> >
> > 4656 
> >
> > 4756 
> >
> > 3564 
> >
> > 4865 
> >
> > 4942 
> >
> > 4264 
> >
> > 2758 
> >
> > 2725 
> >
> > 4440 
> >
> >  
> >
> >
> >  I have two
> > questions:
> >
> >
> > 1. What are the units? The web site says Wh/m2 but it should be per
> > a time basis. It looks like per
> > day
> >
> >
> > but the wording of monthly average gives the impression per
> > month.
> >
> >
> > 2. The trend for the DNI does not seem to make much sense to me. How
> > can June
> >
> >
> > be 3564 and Janurary be higher
> > 4311.
> >
> >
> > Your input will be greatly
> > appreciated.
> >
> >
> > Many
> > thanks.
> >
> >
> > E.
> > Tora

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