[EnergyPlus_Support] Re: Water Mains Temperatures

["Alan Jackson" <alanjackson7@xxxxxxxxx>]

Peter

This is great, thank you.

-
aj


--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Ellis, Peter"
<peter_ellis@...> wrote:
>
> 
> Hi Alan,
> 
> The max difference is for over the entire year.  You can use the
..stat file to figure this out (although it does not explicitly call it
out).  Taking for example the file "USA_IL_Chicago-OHare_TMY2.stat",
find the line called "Monthly Statistics for Dry Bulb temperatures". 
Now find the line below that called "Daily Avg" which is what is
referred to as the "monthly average outdoor air temperature" in the
documentation.  Here it is reproduced below:
> 
> 	Daily Avg	 -4.6	 -2.2	  1.6	  8.4	 15.3	 21.1	 23.5	 21.8	 18.1	
11.7	  4.2	 -2.6	
> 
> Finally, find the maximum difference between these, in this case it
is 23.5-(-4.6) = 28.1 deltaC  This is your "maximum difference in
monthly average outdoor air temperatures".
> 
> P
> 
> ________________________________________
> From: EnergyPlus_Support@xxxxxxxxxxxxxxx
[mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of alanjackson7
> Sent: Tuesday, April 29, 2008 9:03 AM
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> Subject: [EnergyPlus_Support] Water Mains Temperatures
> 
> Could someone elaborate on these two variables for the correlation
> calculation. I believe the avg outdoor air temperature is fairly
> straight forward, however I am unclear what the max difference refers
> too. Max difference in the month? the year? does the .stat or .ddy
> explicitly call out these variables? Thanks.
> 
> * average annual outdoor air temperature (dry-bulb)
> * maximum difference in monthly average outdoor air temperatures
> 
> -
> aj
>



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